From: Igor Olshevskyi <i.olshevskyi@samsung.com>
Date: Tue, 28 Mar 2017 12:33:53 +0000 (+0300)
Subject: TizenRefApp-8266 [Call UI] Add UCL to application
X-Git-Tag: submit/tizen/20170630.111746~30
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F14%2F121714%2F1;p=profile%2Fwearable%2Fapps%2Fnative%2Fcall-ui.git

TizenRefApp-8266 [Call UI] Add UCL to application

Change-Id: I200e6556c863ad1c401eb965518fbb70727b3473
---

diff --git a/.cproject b/.cproject
index 292e139..137ec08 100644
--- a/.cproject
+++ b/.cproject
@@ -22,12 +22,12 @@
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+							<tool command="i386-linux-gnueabi-g++" id="org.tizen.nativecore.tool.sbi.gnu.cpp.compiler.66050065" name="C++ Compiler" superClass="org.tizen.nativecore.tool.sbi.gnu.cpp.compiler">
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-									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_llvm37.i386.core.app"/>
+									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_gcc49.i386.core.app"/>
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@@ -126,19 +126,20 @@
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 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/inc}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/ucl/inc}&quot;"/>
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+							<tool command="i386-linux-gnueabi-gcc" id="org.tizen.nativecore.tool.sbi.gnu.c.compiler.1049599195" name="C Compiler" superClass="org.tizen.nativecore.tool.sbi.gnu.c.compiler">
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-									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_llvm37.i386.core.app"/>
+									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_gcc49.i386.core.app"/>
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@@ -230,31 +231,119 @@
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 									<listOptionValue builtIn="false" value=" -fPIE"/>
-									<listOptionValue builtIn="false" value="--sysroot=&quot;$(SBI_SYSROOT)&quot;"/>
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+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/libxml2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/EGL&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/GLES&quot;"/>
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+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appcore-agent&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appcore-watch&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appfw&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/badge&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/base&quot;"/>
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+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/content&quot;"/>
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+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/dali-toolkit&quot;"/>
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+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/efl-extension&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/efreet-1&quot;"/>
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+							<tool command="i386-linux-gnueabi-g++" id="org.tizen.nativecore.tool.sbi.gnu.cpp.linker.1743878166" name="C++ Linker" superClass="org.tizen.nativecore.tool.sbi.gnu.cpp.linker">
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-									<listOptionValue builtIn="false" value="-L&quot;$(SBI_SYSROOT)/usr/lib&quot;"/>
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-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="shared"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="src"/>
+						<entry flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name="ucl/inc"/>
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@@ -412,18 +502,19 @@
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 								<option id="gnu.cpp.compiler.option.include.paths.382544999" name="Include paths (-I)" superClass="gnu.cpp.compiler.option.include.paths" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/inc}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/ucl/inc}&quot;"/>
 								</option>
 								<option id="sbi.gnu.cpp.compiler.option.frameworks.core.863139267" name="Tizen-Frameworks" superClass="sbi.gnu.cpp.compiler.option.frameworks.core" valueType="userObjs">
 									<listOptionValue builtIn="false" value="Native_API"/>
 								</option>
 								<inputType id="cdt.managedbuild.tool.gnu.cpp.compiler.input.1592357038" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.input"/>
 							</tool>
-							<tool command="clang" id="org.tizen.nativecore.tool.sbi.gnu.c.compiler.2007452919" name="C Compiler" superClass="org.tizen.nativecore.tool.sbi.gnu.c.compiler">
+							<tool command="i386-linux-gnueabi-gcc" id="org.tizen.nativecore.tool.sbi.gnu.c.compiler.2007452919" name="C Compiler" superClass="org.tizen.nativecore.tool.sbi.gnu.c.compiler">
 								<option defaultValue="gnu.c.optimization.level.most" id="gnu.c.compiler.option.optimization.level.1436418716" name="Optimization Level" superClass="gnu.c.compiler.option.optimization.level" valueType="enumerated"/>
 								<option defaultValue="gnu.c.debugging.level.default" id="sbi.gnu.c.compiler.option.debugging.level.core.1220862817" name="Debug level" superClass="sbi.gnu.c.compiler.option.debugging.level.core" valueType="enumerated"/>
 								<option defaultValue="false" id="sbi.gnu.c.compiler.option.misc.pic.core.1659164857" name="-fPIC option" superClass="sbi.gnu.c.compiler.option.misc.pic.core" valueType="boolean"/>
 								<option id="sbi.gnu.c.compiler.option.207590264" name="Tizen-Target" superClass="sbi.gnu.c.compiler.option" valueType="userObjs">
-									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_llvm37.i386.core.app"/>
+									<listOptionValue builtIn="false" value="wearable-3.0-emulator.core_gcc49.i386.core.app"/>
 								</option>
 								<option id="sbi.gnu.c.compiler.option.frameworks_inc.core.1440527129" name="Tizen-Frameworks-Include-Path" superClass="sbi.gnu.c.compiler.option.frameworks_inc.core" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/libxml2&quot;"/>
@@ -522,6 +613,94 @@
 								</option>
 								<option id="gnu.c.compiler.option.include.paths.1553190282" name="Include paths (-I)" superClass="gnu.c.compiler.option.include.paths" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/inc}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/libxml2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/EGL&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/GLES&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/GLES2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/GLES3&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/KHR&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/SDL2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appcore-agent&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appcore-watch&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/appfw&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/badge&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/base&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/cairo&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/calendar-service2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/chromium-ewk&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ckm&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/contacts-svc&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/content&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/context-service&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/csr&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/dali&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/dali-toolkit&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/dbus-1.0&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/device&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/dlog&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-buffer-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-con-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-evas-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-file-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-imf-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-imf-evas-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-input-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-input-evas-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ecore-ipc-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ector-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/e_dbus-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/edje-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eet-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/efl-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/efl-extension&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/efreet-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eina-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eina-1/eina&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eio-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eldbus-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/elementary-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/embryo-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/emile-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eo-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/eom&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ethumb-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ethumb-client-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/evas-1&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/feedback&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/fontconfig&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/freetype2&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/gio-unix-2.0&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/glib-2.0&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/harfbuzz&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/iotcon&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/json-glib-1.0&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/location&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/maps&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/media&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/media-content&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/messaging&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/metadata-editor&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/minizip&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/network&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/notification&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/nsd/&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/phonenumber-utils&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/sensor&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/storage&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/system&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/telephony&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/tzsh&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/ui&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/vulkan&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/widget_service&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/widget_viewer_dali&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/widget_viewer_evas&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/include/yaca&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/lib/dbus-1.0/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${SBI_SYSROOT}/usr/lib/glib-2.0/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/ucl/inc}&quot;"/>
 								</option>
 								<option id="sbi.gnu.c.compiler.option.frameworks.core.1251626395" name="Tizen-Frameworks" superClass="sbi.gnu.c.compiler.option.frameworks.core" valueType="userObjs">
 									<listOptionValue builtIn="false" value="Native_API"/>
@@ -529,7 +708,7 @@
 								<inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.1638821188" superClass="cdt.managedbuild.tool.gnu.c.compiler.input"/>
 							</tool>
 							<tool id="org.tizen.nativeide.tool.sbi.gnu.c.linker.base.1576764897" name="C Linker" superClass="org.tizen.nativeide.tool.sbi.gnu.c.linker.base"/>
-							<tool command="clang++" id="org.tizen.nativecore.tool.sbi.gnu.cpp.linker.1286451421" name="C++ Linker" superClass="org.tizen.nativecore.tool.sbi.gnu.cpp.linker">
+							<tool command="i386-linux-gnueabi-g++" id="org.tizen.nativecore.tool.sbi.gnu.cpp.linker.1286451421" name="C++ Linker" superClass="org.tizen.nativecore.tool.sbi.gnu.cpp.linker">
 								<option defaultValue="false" id="sbi.gnu.cpp.linker.option.shared_flag.core.1339073080" name="Linker.Shared" superClass="sbi.gnu.cpp.linker.option.shared_flag.core" valueType="boolean"/>
 								<option defaultValue="false" id="sbi.gnu.cpp.linker.option.noundefined.core.515331444" name="Report unresolved symbol references (-Wl,--no-undefined)" superClass="sbi.gnu.cpp.linker.option.noundefined.core" valueType="boolean"/>
 								<option id="sbi.gnu.cpp.linker.option.frameworks_lflags.core.101022172" name="Tizen-Frameworks-Other-Lflags" superClass="sbi.gnu.cpp.linker.option.frameworks_lflags.core" valueType="stringList">
@@ -564,8 +743,9 @@
 					<sourceEntries>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="inc"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="res"/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="shared"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="src"/>
+						<entry flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name="ucl/inc"/>
+						<entry flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name="ucl/src"/>
 					</sourceEntries>
 				</configuration>
 			</storageModule>
@@ -585,5 +765,15 @@
 		</scannerConfigBuildInfo>
 	</storageModule>
 	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
-	<storageModule moduleId="refreshScope"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="Multiple configurations">
+			<resource resourceType="PROJECT" workspacePath="/call-ui"/>
+		</configuration>
+		<configuration configurationName="Debug">
+			<resource resourceType="PROJECT" workspacePath="/call-ui"/>
+		</configuration>
+		<configuration configurationName="Release">
+			<resource resourceType="PROJECT" workspacePath="/call-ui"/>
+		</configuration>
+	</storageModule>
 </cproject>
diff --git a/ucl/inc/ucl/appfw/IInstance.h b/ucl/inc/ucl/appfw/IInstance.h
new file mode 100644
index 0000000..7d69f33
--- /dev/null
+++ b/ucl/inc/ucl/appfw/IInstance.h
@@ -0,0 +1,19 @@
+#ifndef __UCL_APPFW_I_INSTANCE_H__
+#define __UCL_APPFW_I_INSTANCE_H__
+
+#include "IInstanceContext.h"
+
+namespace ucl {
+
+	class IInstance;
+	using IInstanceUPtr = std::unique_ptr<IInstance>;
+
+	class IInstance : public Polymorphic {
+	public:
+		virtual Result onCreate(IInstanceContext *context) = 0;
+		virtual void onPause() = 0;
+		virtual void onResume() = 0;
+	};
+}
+
+#endif // __UCL_APPFW_I_INSTANCE_H__
diff --git a/ucl/inc/ucl/appfw/IInstanceAppControlExt.h b/ucl/inc/ucl/appfw/IInstanceAppControlExt.h
new file mode 100644
index 0000000..da05a7f
--- /dev/null
+++ b/ucl/inc/ucl/appfw/IInstanceAppControlExt.h
@@ -0,0 +1,14 @@
+#ifndef __UCL_APPFW_I_INSTANCE_APP_CONTROL_EXT_H__
+#define __UCL_APPFW_I_INSTANCE_APP_CONTROL_EXT_H__
+
+#include "types.h"
+
+namespace ucl {
+
+	class IInstanceAppControlExt : public Polymorphic {
+	public:
+		virtual void onAppControl(app_control_h appControl) = 0;
+	};
+}
+
+#endif // __UCL_APPFW_I_INSTANCE_APP_CONTROL_EXT_H__
diff --git a/ucl/inc/ucl/appfw/IInstanceContext.h b/ucl/inc/ucl/appfw/IInstanceContext.h
new file mode 100644
index 0000000..59765eb
--- /dev/null
+++ b/ucl/inc/ucl/appfw/IInstanceContext.h
@@ -0,0 +1,18 @@
+#ifndef __UCL_APPFW_I_INSTANCE_CONTEXT_H__
+#define __UCL_APPFW_I_INSTANCE_CONTEXT_H__
+
+#include "types.h"
+
+#include "ucl/gui/Window.h"
+
+namespace ucl {
+
+	class IInstanceContext : public Polymorphic {
+	public:
+		virtual AppType getAppType() const = 0;
+		virtual WindowSRef getWindow() = 0;
+		virtual void exitApp() = 0;
+	};
+}
+
+#endif // __UCL_APPFW_I_INSTANCE_CONTEXT_H__
diff --git a/ucl/inc/ucl/appfw/InstanceManagerBase.h b/ucl/inc/ucl/appfw/InstanceManagerBase.h
new file mode 100644
index 0000000..27decbd
--- /dev/null
+++ b/ucl/inc/ucl/appfw/InstanceManagerBase.h
@@ -0,0 +1,29 @@
+#ifndef __UCL_APPFW_INSTANCE_MANAGER_BASE_H__
+#define __UCL_APPFW_INSTANCE_MANAGER_BASE_H__
+
+#include "IInstance.h"
+#include "SysEventProvider.h"
+
+namespace ucl {
+
+	class InstanceManagerBase : public Polymorphic {
+	public:
+		InstanceManagerBase(AppParams appParams);
+		virtual ~InstanceManagerBase();
+
+		const AppParams &getAppParams() const;
+
+		void setSysEventProvider(SysEventProviderUPtr provider);
+
+		virtual IInstance *newInstance() const = 0;
+
+	protected:
+		SysEventProvider &getSysEventProvider() const;
+
+	private:
+		const AppParams m_appParams;
+		SysEventProviderUPtr m_sysEventProvider;
+	};
+}
+
+#endif // __UCL_APPFW_INSTANCE_MANAGER_BASE_H__
diff --git a/ucl/inc/ucl/appfw/SysEventProvider.h b/ucl/inc/ucl/appfw/SysEventProvider.h
new file mode 100644
index 0000000..8223ffe
--- /dev/null
+++ b/ucl/inc/ucl/appfw/SysEventProvider.h
@@ -0,0 +1,45 @@
+#ifndef __UCL_APPFW_SYS_EVENT_PROVIDER_H__
+#define __UCL_APPFW_SYS_EVENT_PROVIDER_H__
+
+#include <list>
+
+#include "types.h"
+
+namespace ucl {
+
+	class SysEventProvider : public NonCopyable {
+	public:
+		using EventHandlerAddFunc = int (*)(app_event_handler_h *,
+				app_event_type_e, app_event_cb, void *);
+		using EventHandlerDelFunc = int (*)(app_event_handler_h);
+
+	public:
+		SysEventProvider(EventHandlerAddFunc addFunc,
+				EventHandlerDelFunc delFunc);
+		~SysEventProvider();
+
+		void addEventHandler(SysEventHandler handler);
+		void delEventHandler(SysEventHandler handler);
+
+	private:
+		int addEventHandler(app_event_handler_h *handler,
+				app_event_type_e appEvent, app_event_cb cb, void *data);
+		int delEventHandler(app_event_handler_h handler);
+
+		void dispatch(SysEvent sysEvent);
+
+	private:
+		class EventProxy;
+		using EventProxies = std::list<EventProxy>;
+
+	private:
+		const EventHandlerAddFunc m_addFunc;
+		const EventHandlerDelFunc m_delFunc;
+		EventProxies m_eventProxies;
+		Event<SysEventHandler> m_event;
+	};
+}
+
+#include "SysEventProvider.hpp"
+
+#endif // __UCL_APPFW_SYS_EVENT_PROVIDER_H__
diff --git a/ucl/inc/ucl/appfw/SysEventProvider.hpp b/ucl/inc/ucl/appfw/SysEventProvider.hpp
new file mode 100644
index 0000000..8d6708f
--- /dev/null
+++ b/ucl/inc/ucl/appfw/SysEventProvider.hpp
@@ -0,0 +1,12 @@
+namespace ucl {
+
+	inline void SysEventProvider::addEventHandler(SysEventHandler handler)
+	{
+		m_event += handler;
+	}
+
+	inline void SysEventProvider::delEventHandler(SysEventHandler handler)
+	{
+		m_event -= handler;
+	}
+}
diff --git a/ucl/inc/ucl/appfw/UIApp.h b/ucl/inc/ucl/appfw/UIApp.h
new file mode 100644
index 0000000..ccd628a
--- /dev/null
+++ b/ucl/inc/ucl/appfw/UIApp.h
@@ -0,0 +1,43 @@
+#ifndef __UCL_APPFW_UI_APP_H__
+#define __UCL_APPFW_UI_APP_H__
+
+#include "IInstanceContext.h"
+
+#include "InstanceManagerBase.h"
+
+namespace ucl {
+
+	class UIApp : private IInstanceContext {
+	public:
+		UIApp(InstanceManagerBase &instanceMgr);
+		virtual ~UIApp();
+
+		int run(int argc, char *argv[]);
+
+	private:
+		bool onCreate();
+		void onTerminate();
+		void onPause();
+		void onResume();
+		void onAppControl(app_control_h appControl);
+
+		Result configParams();
+		Result createWindow();
+
+		void initSysEventManager();
+		Result createInstance();
+
+		// IInstanceContext //
+
+		virtual AppType getAppType() const final override;
+		virtual WindowSRef getWindow() final override;
+		virtual void exitApp() final override;
+
+	private:
+		InstanceManagerBase &m_instanceMgr;
+		WindowSRef m_window;
+		IInstanceUPtr m_instance;
+	};
+}
+
+#endif // __UCL_APPFW_UI_APP_H__
diff --git a/ucl/inc/ucl/appfw/types.h b/ucl/inc/ucl/appfw/types.h
new file mode 100644
index 0000000..17f5b6e
--- /dev/null
+++ b/ucl/inc/ucl/appfw/types.h
@@ -0,0 +1,46 @@
+#ifndef __UCL_APPFW_TYPES_H__
+#define __UCL_APPFW_TYPES_H__
+
+#include <app_common.h>
+#include <app_control.h>
+
+#include "ucl/util/types.h"
+#include "ucl/util/delegation.h"
+
+#include "ucl/misc/HashMap.h"
+#include "ucl/misc/Event.h"
+
+namespace ucl {
+
+	enum class AppType {
+		UI,
+		WIDGET,
+		WATCH
+	};
+
+	enum class AppParam {
+		BASE_SCALE,
+		ACCELERATION_PREFERENECE,
+		WINDOW_TYPE,
+		WINDOW_NAME
+	};
+
+	using AppParams = HashMap<AppParam, Variant>;
+
+	class SysEventProvider;
+	using SysEventProviderUPtr = std::unique_ptr<SysEventProvider>;
+
+	enum class SysEvent {
+		LANGUAGE_CHANGED,
+		REGION_FMT_CHANGED,
+		LOW_MEMORY,
+		LOW_BATTERY,
+		ORIENTATION_CHANGED,
+		SUSPEND_STATE_CHANGED,
+		UPDATE_REQUESTED
+	};
+
+	using SysEventHandler = Delegate<void(SysEvent)>;
+}
+
+#endif // __UCL_APPFW_TYPES_H__
diff --git a/ucl/inc/ucl/config.h b/ucl/inc/ucl/config.h
new file mode 100644
index 0000000..588a0ee
--- /dev/null
+++ b/ucl/inc/ucl/config.h
@@ -0,0 +1,28 @@
+#ifndef __UCL_CONFIG_H__
+#define __UCL_CONFIG_H__
+
+#ifdef _DEBUG
+#define UCL_DEBUG
+#endif
+
+#define UCL_DEFINE_GET_UCL_RESULT_DATA 1
+
+#define UCL_LOG_LEVEL_VERBOSE 6
+#define UCL_LOG_LEVEL_DEBUG   5
+#define UCL_LOG_LEVEL_INFO    4
+#define UCL_LOG_LEVEL_WARNING 3
+#define UCL_LOG_LEVEL_ERROR   2
+#define UCL_LOG_LEVEL_FATAL   1
+
+#ifdef UCL_DEBUG
+#define UCL_MAX_LOG_LEVEL UCL_LOG_LEVEL_VERBOSE
+#else
+#define UCL_MAX_LOG_LEVEL UCL_LOG_LEVEL_INFO
+#endif
+
+#define UCL_DEFAULT_LOG_TAG "UCL"
+
+#define UCL_INCLUDE_DELEGATION_SHORT_MACRO_H 0
+#define UCL_INCLUDE_SMART_DELEGATION_SHORT_MACRO_H 0
+
+#endif // __UCL_CONFIG_H__
diff --git a/ucl/inc/ucl/gui/EdjeWidget.h b/ucl/inc/ucl/gui/EdjeWidget.h
new file mode 100644
index 0000000..4724e86
--- /dev/null
+++ b/ucl/inc/ucl/gui/EdjeWidget.h
@@ -0,0 +1,35 @@
+#ifndef __UCL_GUI_EDJE_WIDGET_H__
+#define __UCL_GUI_EDJE_WIDGET_H__
+
+#include "ElmWidget.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(EdjeWidget);
+
+	class EdjeWidget : public ElmWidget {
+	public:
+		void setText(const TString &value);
+		void setPartText(EdjePart part, const TString &value);
+
+		TString getText() const;
+		TString getPartText(EdjePart part) const;
+
+		void setContent(Evas_Object *content);
+		void setPartContent(EdjePart part, Evas_Object *content);
+		Evas_Object *unsetContent();
+		Evas_Object *unsetPartContent(EdjePart part);
+
+		Evas_Object *getContent() const;
+		Evas_Object *getPartContent(EdjePart part) const;
+
+		void emitSignal(EdjeSignal signal, EdjeSignalSrc source);
+
+	protected:
+		EdjeWidget(RefCountObjBase *rc, Evas_Object *eo, bool isOwner = false);
+	};
+}
+
+#include "EdjeWidget.hpp"
+
+#endif // __UCL_GUI_EDJE_WIDGET_H__
diff --git a/ucl/inc/ucl/gui/EdjeWidget.hpp b/ucl/inc/ucl/gui/EdjeWidget.hpp
new file mode 100644
index 0000000..ee75045
--- /dev/null
+++ b/ucl/inc/ucl/gui/EdjeWidget.hpp
@@ -0,0 +1,55 @@
+namespace ucl {
+
+	inline EdjeWidget::EdjeWidget(RefCountObjBase *const rc,
+			Evas_Object *const eo, const bool isOwner) :
+		ElmWidget(rc, eo, isOwner)
+	{
+	}
+
+	inline TString EdjeWidget::getText() const
+	{
+		return elm_object_text_get(getEo());
+	}
+
+	inline TString EdjeWidget::getPartText(const EdjePart part) const
+	{
+		return elm_object_part_text_get(getEo(), part.name);
+	}
+
+	inline void EdjeWidget::setContent(Evas_Object *const content)
+	{
+		elm_object_content_set(getEo(), content);
+	}
+
+	inline void EdjeWidget::setPartContent(const EdjePart part,
+			Evas_Object *const content)
+	{
+		elm_object_part_content_set(getEo(), part.name, content);
+	}
+
+	inline Evas_Object *EdjeWidget::unsetContent()
+	{
+		return elm_object_content_unset(getEo());
+	}
+
+	inline Evas_Object *EdjeWidget::unsetPartContent(const EdjePart part)
+	{
+		return elm_object_part_content_unset(getEo(), part.name);
+	}
+
+	inline Evas_Object *EdjeWidget::getContent() const
+	{
+		return elm_object_content_get(getEo());
+	}
+
+	inline Evas_Object *EdjeWidget::getPartContent(const EdjePart part) const
+	{
+		return elm_object_part_content_get(getEo(), part.name);
+	}
+
+	inline void EdjeWidget::emitSignal(const EdjeSignal signal,
+			const EdjeSignalSrc source)
+	{
+		elm_object_signal_emit(getEo(), signal.name, source.name);
+	}
+}
diff --git a/ucl/inc/ucl/gui/ElmWidget.h b/ucl/inc/ucl/gui/ElmWidget.h
new file mode 100644
index 0000000..108bbd5
--- /dev/null
+++ b/ucl/inc/ucl/gui/ElmWidget.h
@@ -0,0 +1,31 @@
+#ifndef __UCL_GUI_ELM_WIDGET_H__
+#define __UCL_GUI_ELM_WIDGET_H__
+
+#include "Widget.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(ElmWidget);
+
+	class ElmWidget : public Widget {
+	public:
+		friend class RefCountObj<ElmWidget>;
+		using Widget::Widget;
+
+		void setEnabled(bool value);
+		bool isEnabled() const;
+
+	protected:
+		virtual void setFocusedImpl(bool value) final override;
+		virtual bool isFocusedImpl() const final override;
+	};
+
+	// Non-member functions //
+
+	void enable(ElmWidget &widget);
+	void disable(ElmWidget &widget);
+}
+
+#include "ElmWidget.hpp"
+
+#endif // __UCL_GUI_ELM_WIDGET_H__
diff --git a/ucl/inc/ucl/gui/ElmWidget.hpp b/ucl/inc/ucl/gui/ElmWidget.hpp
new file mode 100644
index 0000000..3febf5f
--- /dev/null
+++ b/ucl/inc/ucl/gui/ElmWidget.hpp
@@ -0,0 +1,24 @@
+namespace ucl {
+
+	inline void ElmWidget::setEnabled(const bool value)
+	{
+		elm_object_disabled_set(getEo(), toEina(!value));
+	}
+
+	inline bool ElmWidget::isEnabled() const
+	{
+		return !elm_object_disabled_get(getEo());
+	}
+
+	// Non-member functions //
+
+	inline void enable(ElmWidget &widget)
+	{
+		widget.setEnabled(true);
+	}
+
+	inline void disable(ElmWidget &widget)
+	{
+		widget.setEnabled(false);
+	}
+}
diff --git a/ucl/inc/ucl/gui/Layout.h b/ucl/inc/ucl/gui/Layout.h
new file mode 100644
index 0000000..a068416
--- /dev/null
+++ b/ucl/inc/ucl/gui/Layout.h
@@ -0,0 +1,40 @@
+#ifndef __UCL_GUI_LAYOUT_H__
+#define __UCL_GUI_LAYOUT_H__
+
+#include "EdjeWidget.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(Layout);
+
+	class Layout : public EdjeWidget {
+	public:
+		class Builder {
+		public:
+			Builder();
+			Builder &setTheme(const LayoutTheme &value);
+			Builder &setEdjeFile(std::string filePath, EdjeGroup group);
+			Builder &setIsOwner(bool value);
+			Builder &setNeedBindToEo(bool value);
+			LayoutSRef build(Widget &parent) const;
+		private:
+			LayoutTheme m_theme;
+			std::string m_edjeFilePath;
+			EdjeGroup m_edjeGroup;
+			bool m_isOwner;
+			bool m_needBindToEo;
+		};
+
+	public:
+		friend class RefCountObj<Layout>;
+		using EdjeWidget::EdjeWidget;
+		explicit Layout(Evas_Object *eo, bool isOwner = false);
+
+		void setTheme(const LayoutTheme &theme);
+		void setEdjeFile(const std::string &filePath, EdjeGroup group);
+	};
+}
+
+#include "Layout.hpp"
+
+#endif // __UCL_GUI_LAYOUT_H__
diff --git a/ucl/inc/ucl/gui/Layout.hpp b/ucl/inc/ucl/gui/Layout.hpp
new file mode 100644
index 0000000..bfad60c
--- /dev/null
+++ b/ucl/inc/ucl/gui/Layout.hpp
@@ -0,0 +1,54 @@
+namespace ucl {
+
+	// Layout::Builder //
+
+	inline Layout::Builder::Builder() :
+		m_isOwner(false),
+		m_needBindToEo(true)
+	{
+	}
+
+	inline Layout::Builder &Layout::Builder::setTheme(const LayoutTheme &theme)
+	{
+		m_theme = theme;
+		return *this;
+	}
+
+	inline Layout::Builder &Layout::Builder::setEdjeFile(
+			std::string filePath, const EdjeGroup group)
+	{
+		m_edjeFilePath = std::move(filePath);
+		m_edjeGroup = group;
+		return *this;
+	}
+
+	inline Layout::Builder &Layout::Builder::setIsOwner(const bool value)
+	{
+		m_isOwner = value;
+		return *this;
+	}
+
+	inline Layout::Builder &Layout::Builder::setNeedBindToEo(const bool value)
+	{
+		m_needBindToEo = value;
+		return *this;
+	}
+
+	// Layout //
+
+	inline Layout::Layout(Evas_Object *const eo, const bool isOwner) :
+		EdjeWidget(nullptr, eo, isOwner)
+	{
+	}
+
+	inline void Layout::setTheme(const LayoutTheme &theme)
+	{
+		elm_layout_theme_set(getEo(), theme.klass, theme.group, theme.style);
+	}
+
+	inline void Layout::setEdjeFile(const std::string &filePath,
+			const EdjeGroup group)
+	{
+		elm_layout_file_set(getEo(), filePath.c_str(), group.name);
+	}
+}
diff --git a/ucl/inc/ucl/gui/NaviItem.h b/ucl/inc/ucl/gui/NaviItem.h
new file mode 100644
index 0000000..941d510
--- /dev/null
+++ b/ucl/inc/ucl/gui/NaviItem.h
@@ -0,0 +1,29 @@
+#ifndef __UCL_GUI_NAVI_ITEM_H__
+#define __UCL_GUI_NAVI_ITEM_H__
+
+#include "WidgetItem.h"
+
+namespace ucl {
+
+	class NaviItem : public WidgetItem {
+	public:
+		using PopHandler = Delegate<Eina_Bool(Elm_Object_Item *)>;
+
+	public:
+		using WidgetItem::WidgetItem;
+
+		void setPopHandler(const PopHandler &handler) const;
+
+		void popTo() const;
+		void promote() const;
+
+		void setTitleEnabled(bool value, bool useTransition = false) const;
+		bool isTitleEnabled() const;
+
+		void setTitle(const TString &title) const;
+	};
+}
+
+#include "NaviItem.hpp"
+
+#endif // __UCL_GUI_NAVI_ITEM_H__
diff --git a/ucl/inc/ucl/gui/NaviItem.hpp b/ucl/inc/ucl/gui/NaviItem.hpp
new file mode 100644
index 0000000..db2705b
--- /dev/null
+++ b/ucl/inc/ucl/gui/NaviItem.hpp
@@ -0,0 +1,40 @@
+namespace ucl {
+
+	inline void NaviItem::setPopHandler(const PopHandler &handler) const
+	{
+		elm_naviframe_item_pop_cb_set(getIt(),
+				handler.getStubA(), handler.getData());
+	}
+
+	inline void NaviItem::popTo() const
+	{
+		elm_naviframe_item_pop_to(getIt());
+	}
+
+	inline void NaviItem::promote() const
+	{
+		elm_naviframe_item_promote(getIt());
+	}
+
+	inline void NaviItem::setTitleEnabled(
+			const bool value, const bool useTransition) const
+	{
+		elm_naviframe_item_title_enabled_set(getIt(),
+				toEina(value), toEina(useTransition));
+	}
+
+	inline bool NaviItem::isTitleEnabled() const
+	{
+		return elm_naviframe_item_title_enabled_get(getIt());
+	}
+
+	inline void NaviItem::setTitle(const TString &title) const
+	{
+		if (isEmpty(title)) {
+			setTitleEnabled(false);
+		} else {
+			setText(title);
+			setTitleEnabled(true);
+		}
+	}
+}
diff --git a/ucl/inc/ucl/gui/Naviframe.h b/ucl/inc/ucl/gui/Naviframe.h
new file mode 100644
index 0000000..0f2aa2a
--- /dev/null
+++ b/ucl/inc/ucl/gui/Naviframe.h
@@ -0,0 +1,74 @@
+#ifndef __UCL_GUI_NAVIFRAME_H__
+#define __UCL_GUI_NAVIFRAME_H__
+
+#include <vector>
+
+#include "StyledWidget.h"
+#include "NaviItem.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(Naviframe);
+
+	class Naviframe : public StyledWidget {
+	public:
+		static constexpr SmartEvent TRANSITION_FINISHED {"transition,finished"};
+
+		class Builder {
+		public:
+			Builder();
+			Builder &setStyle(ElmStyle value);
+			Builder &setIsOwner(bool value);
+			Builder &setNeedBindToEo(bool value);
+			NaviframeSRef build(Widget &parent) const;
+		private:
+			ElmStyle m_style;
+			bool m_isOwner;
+			bool m_needBindToEo;
+		};
+
+	public:
+		friend class RefCountObj<Naviframe>;
+		using StyledWidget::StyledWidget;
+
+		void setAutoBackBtn(bool value);
+		bool isAutoBackBtn() const;
+
+		void setPreservePop(bool value);
+		bool isPreservePop() const;
+
+		void setEventsEnabledOnTransition(bool value);
+		bool isEventsEnabledOnTransition() const;
+
+		Evas_Object *pop();
+
+		NaviItem push(const TString &title, Evas_Object *backBtn,
+				Evas_Object *moreBtn, Evas_Object *content, ElmStyle style);
+		NaviItem push(const TString &title, Evas_Object *content);
+		NaviItem push(Evas_Object *content);
+
+		NaviItem insertAfter(const TString &title, NaviItem after,
+				Evas_Object *backBtn, Evas_Object *moreBtn,
+				Evas_Object *content, ElmStyle style);
+		NaviItem insertAfter(const TString &title, NaviItem after,
+				Evas_Object *content);
+		NaviItem insertAfter(NaviItem after,
+				Evas_Object *content);
+
+		NaviItem insertBefore(const TString &title, NaviItem before,
+				Evas_Object *backBtn, Evas_Object *moreBtn,
+				Evas_Object *content, ElmStyle style);
+		NaviItem insertBefore(const TString &title, NaviItem before,
+				Evas_Object *content);
+		NaviItem insertBefore(NaviItem before,
+				Evas_Object *content);
+
+		NaviItem getTopItem()const;
+		NaviItem getBottomItem() const;
+		std::vector<NaviItem> getItems() const;
+	};
+}
+
+#include "Naviframe.hpp"
+
+#endif // __UCL_GUI_NAVIFRAME_H__
diff --git a/ucl/inc/ucl/gui/Naviframe.hpp b/ucl/inc/ucl/gui/Naviframe.hpp
new file mode 100644
index 0000000..7141377
--- /dev/null
+++ b/ucl/inc/ucl/gui/Naviframe.hpp
@@ -0,0 +1,161 @@
+namespace ucl {
+
+	// Naviframe::Builder //
+
+	inline Naviframe::Builder::Builder() :
+		m_isOwner(false),
+		m_needBindToEo(true)
+	{
+	}
+
+	inline Naviframe::Builder &Naviframe::Builder::setStyle(
+			const ElmStyle value)
+	{
+		m_style = value;
+		return *this;
+	}
+
+	inline Naviframe::Builder &Naviframe::Builder::setIsOwner(const bool value)
+	{
+		m_isOwner = value;
+		return *this;
+	}
+
+	inline Naviframe::Builder &Naviframe::Builder::setNeedBindToEo(
+			const bool value)
+	{
+		m_needBindToEo = value;
+		return *this;
+	}
+
+	// Naviframe //
+
+	inline void Naviframe::setAutoBackBtn(const bool value)
+	{
+		elm_naviframe_prev_btn_auto_pushed_set(getEo(), toEina(value));
+	}
+
+	inline bool Naviframe::isAutoBackBtn() const
+	{
+		return elm_naviframe_prev_btn_auto_pushed_get(getEo());
+	}
+
+	inline void Naviframe::setPreservePop(const bool value)
+	{
+		elm_naviframe_content_preserve_on_pop_set(getEo(), toEina(value));
+	}
+
+	inline bool Naviframe::isPreservePop() const
+	{
+		return elm_naviframe_content_preserve_on_pop_get(getEo());
+	}
+
+	inline void Naviframe::setEventsEnabledOnTransition(const bool value)
+	{
+		elm_naviframe_event_enabled_set(getEo(), toEina(value));
+	}
+
+	inline bool Naviframe::isEventsEnabledOnTransition() const
+	{
+		return elm_naviframe_event_enabled_get(getEo());
+	}
+
+	inline Evas_Object *Naviframe::pop()
+	{
+		return elm_naviframe_item_pop(getEo());
+	}
+
+	inline NaviItem Naviframe::push(const TString &title,
+			Evas_Object *const backBtn, Evas_Object *const moreBtn,
+			Evas_Object *const content, const ElmStyle style)
+	{
+		auto result = NaviItem(elm_naviframe_item_push(getEo(),
+				nullptr, backBtn, moreBtn, content, style.name));
+		result.setTitle(title);
+		return result;
+	}
+
+	inline NaviItem Naviframe::push(const TString &title,
+			Evas_Object *const content)
+	{
+		return push(title, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::push(Evas_Object *const content)
+	{
+		return push(nullptr, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::insertAfter(const TString &title,
+			NaviItem after,
+			Evas_Object *const backBtn, Evas_Object *const moreBtn,
+			Evas_Object *const content, const ElmStyle style)
+	{
+		auto result = NaviItem(elm_naviframe_item_insert_after(getEo(),
+				after, nullptr, backBtn, moreBtn, content, style.name));
+		result.setTitle(title);
+		return result;
+	}
+
+	inline NaviItem Naviframe::insertAfter(const TString &title,
+			NaviItem after, Evas_Object *const content)
+	{
+		return insertAfter(title, after, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::insertAfter(NaviItem after,
+			Evas_Object *const content)
+	{
+		return insertAfter(nullptr, after, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::insertBefore(const TString &title,
+			NaviItem before,
+			Evas_Object *const backBtn, Evas_Object *const moreBtn,
+			Evas_Object *const content, const ElmStyle style)
+	{
+		auto result = NaviItem(elm_naviframe_item_insert_before(getEo(),
+				before, nullptr, backBtn, moreBtn, content, style.name));
+		result.setTitle(title);
+		return result;
+	}
+
+	inline NaviItem Naviframe::insertBefore(const TString &title,
+			NaviItem before, Evas_Object *const content)
+	{
+		return insertAfter(title, before, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::insertBefore(NaviItem before,
+			Evas_Object *const content)
+	{
+		return insertAfter(nullptr, before, nullptr, nullptr, content, nullptr);
+	}
+
+	inline NaviItem Naviframe::getTopItem()const
+	{
+		return NaviItem(elm_naviframe_top_item_get(getEo()));
+	}
+
+	inline NaviItem Naviframe::getBottomItem() const
+	{
+		return NaviItem(elm_naviframe_bottom_item_get(getEo()));
+	}
+
+	inline std::vector<NaviItem> Naviframe::getItems() const
+	{
+		std::vector<NaviItem> result;
+
+		Eina_List *const items = elm_naviframe_items_get(getEo());
+		Eina_List *l = nullptr;
+		void *data = nullptr;
+
+		EINA_LIST_FOREACH(items, l, data) {
+			result.emplace_back(static_cast<Elm_Object_Item *>(data));
+		}
+
+		eina_list_free(items);
+
+		return result;
+	}
+}
diff --git a/ucl/inc/ucl/gui/StyledWidget.h b/ucl/inc/ucl/gui/StyledWidget.h
new file mode 100644
index 0000000..4b8a74c
--- /dev/null
+++ b/ucl/inc/ucl/gui/StyledWidget.h
@@ -0,0 +1,22 @@
+#ifndef __UCL_GUI_STYLED_WIDGET_H__
+#define __UCL_GUI_STYLED_WIDGET_H__
+
+#include "EdjeWidget.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(StyledWidget);
+
+	class StyledWidget : public EdjeWidget {
+	public:
+		friend class RefCountObj<StyledWidget>;
+		using EdjeWidget::EdjeWidget;
+		explicit StyledWidget(Evas_Object *eo, bool isOwner = false);
+
+		void setStyle(ElmStyle style);
+	};
+}
+
+#include "StyledWidget.hpp"
+
+#endif // __UCL_GUI_STYLED_WIDGET_H__
diff --git a/ucl/inc/ucl/gui/StyledWidget.hpp b/ucl/inc/ucl/gui/StyledWidget.hpp
new file mode 100644
index 0000000..033b2aa
--- /dev/null
+++ b/ucl/inc/ucl/gui/StyledWidget.hpp
@@ -0,0 +1,13 @@
+namespace ucl {
+
+	inline StyledWidget::StyledWidget(
+			Evas_Object *const eo, const bool isOwner) :
+		EdjeWidget(nullptr, eo, isOwner)
+	{
+	}
+
+	inline void StyledWidget::setStyle(const ElmStyle style)
+	{
+		elm_object_style_set(getEo(), style.name);
+	}
+}
diff --git a/ucl/inc/ucl/gui/Widget.h b/ucl/inc/ucl/gui/Widget.h
new file mode 100644
index 0000000..6003ba9
--- /dev/null
+++ b/ucl/inc/ucl/gui/Widget.h
@@ -0,0 +1,126 @@
+#ifndef __UCL_GUI_WIDGET_H__
+#define __UCL_GUI_WIDGET_H__
+
+#include <list>
+
+#include "types.h"
+
+#include "ucl/misc/SharedObject.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(Widget);
+
+	class Widget : public SharedObject {
+	public:
+		static constexpr auto EXPAND = EVAS_HINT_EXPAND;
+		static constexpr auto FILL = EVAS_HINT_FILL;
+
+	public:
+		explicit Widget(Evas_Object *eo, bool isOwner = false);
+		virtual ~Widget();
+
+		void bindToEo();
+		void unbindFromEo();
+
+		void setIsOwner(bool value);
+
+		Evas_Object *getEo();
+		const Evas_Object *getEo() const;
+
+		operator Evas_Object *();
+		operator const Evas_Object *() const;
+
+		Evas *getEvas() const;
+
+		void addEventHandler(WidgetEvent event, WidgetEventHandler handler);
+		void addEventHandler(SmartEvent event, WidgetEventHandler handler);
+
+		void delEventHandler(WidgetEvent event, WidgetEventHandler handler);
+		void delEventHandler(SmartEvent event, WidgetEventHandler handler);
+
+		void markForDeletion();
+
+		void setVisible(bool value);
+		bool isVisible() const;
+
+		void setGeometry(int x, int y, int w, int h);
+		void move(int x, int y);
+		void resize(int w, int h);
+
+		void getGeometry(int *x, int *y, int *w, int *h) const;
+
+		void setWeight(double w, double h);
+		void setAlign(double w, double h);
+		void setMin(int w, int h);
+		void setMax(int w, int h);
+
+		void getWeight(double *w, double *h) const;
+		void getAlign(double *w, double *h) const;
+		void getMin(int *w, int *h) const;
+		void getMax(int *w, int *h) const;
+
+		void setFocused(bool value);
+		bool isFocused() const;
+
+	protected:
+		friend class RefCountObj<Widget>;
+		Widget(RefCountObjBase *rc, Evas_Object *eo, bool isOwner = false);
+
+		virtual void setFocusedImpl(bool value);
+		virtual bool isFocusedImpl() const;
+
+	private:
+		class EventProxy;
+		using EventProxies = std::list<EventProxy>;
+		using EventProxiesIt = EventProxies::iterator;
+
+	private:
+		void updateRefs();
+
+		void updateEoRef();
+		bool needKeepEoRef() const;
+		void updateSelfRef();
+		bool needKeepSelfRef() const;
+
+		void setSelfRefUnique(const bool value);
+
+		void onEoFree(Evas *e, Evas_Object *obj, void *event_info);
+
+		void delEventProxy(const EventProxiesIt it);
+
+	protected:
+		// This section MUST be protected!
+		// Signal to RefCountObj<T> to call onUniqueChanged()
+		enum { ENABLE_ON_UNIQUE_CHANGED_DISPATCH };
+		void onUniqueChanged(bool isUnique);
+
+	private:
+		Evas_Object *m_eo;
+		EventProxies m_eventProxies;
+		bool m_isOwner;
+		bool m_isBoundToEo;
+		bool m_isEoRefKept;
+		bool m_isSelfRefKept;
+		bool m_isSelfRefUnique;
+	};
+
+	// Non-member functions //
+
+	void getPosition(const Widget &widget, int &x, int &y);
+	void getSize(const Widget &widget, int &w, int &h);
+
+	void show(Widget &widget);
+	void hide(Widget &widget);
+
+	void focus(Widget &widget);
+	void unfocus(Widget &widget);
+
+	void expand(Widget &widget);
+	void fill(Widget &widget);
+	void expandAndFill(Widget &widget);
+}
+
+#include "Widget.hpp"
+
+#endif // __UCL_GUI_WIDGET_H__
diff --git a/ucl/inc/ucl/gui/Widget.hpp b/ucl/inc/ucl/gui/Widget.hpp
new file mode 100644
index 0000000..9ab4692
--- /dev/null
+++ b/ucl/inc/ucl/gui/Widget.hpp
@@ -0,0 +1,184 @@
+namespace ucl { namespace { namespace impl {
+
+	constexpr auto WIDGET_DATA_NAME = "__WIDGET_DATA_NAME__";
+}}}
+
+namespace ucl {
+
+	inline Widget::Widget(Evas_Object *const eo, const bool isOwner) :
+		Widget(nullptr, eo, isOwner)
+	{
+	}
+
+	inline void Widget::setIsOwner(const bool value)
+	{
+		if (value != m_isOwner) {
+			m_isOwner = value;
+			updateRefs();
+		}
+	}
+
+	inline Evas_Object *Widget::getEo()
+	{
+		return m_eo;
+	}
+
+	inline const Evas_Object *Widget::getEo() const
+	{
+		return m_eo;
+	}
+
+	inline Widget::operator Evas_Object *()
+	{
+		return getEo();
+	}
+
+	inline Widget::operator const Evas_Object *() const
+	{
+		return getEo();
+	}
+
+	inline Evas *Widget::getEvas() const
+	{
+		return evas_object_evas_get(getEo());
+	}
+
+	inline void Widget::markForDeletion()
+	{
+		evas_object_del(getEo());
+	}
+
+	inline void Widget::setVisible(bool value)
+	{
+		if (value) {
+			evas_object_show(getEo());
+		} else {
+			evas_object_hide(getEo());
+		}
+	}
+
+	inline bool Widget::isVisible() const
+	{
+		return evas_object_visible_get(getEo());
+	}
+
+	inline void Widget::setGeometry(const int x, const int y,
+			const int w, const int h)
+	{
+		evas_object_geometry_set(getEo(), x, y, w, h);
+	}
+
+	inline void Widget::move(const int x, const int y)
+	{
+		evas_object_move(getEo(), x, y);
+	}
+
+	inline void Widget::resize(const int w, const int h)
+	{
+		evas_object_resize(getEo(), w, h);
+	}
+
+	inline void Widget::getGeometry(int *const x, int *const y,
+			int *const w, int *const h) const
+	{
+		evas_object_geometry_get(getEo(), x, y, w, h);
+	}
+
+	inline void Widget::setWeight(const double w, const double h)
+	{
+		evas_object_size_hint_weight_set(getEo(), w, h);
+	}
+
+	inline void Widget::setAlign(const double w, const double h)
+	{
+		evas_object_size_hint_align_set(getEo(), w, h);
+	}
+
+	inline void Widget::setMin(const int w, const int h)
+	{
+		evas_object_size_hint_min_set(getEo(), w, h);
+	}
+
+	inline void Widget::setMax(const int w, const int h)
+	{
+		evas_object_size_hint_max_set(getEo(), w, h);
+	}
+
+	inline void Widget::getWeight(double *const w, double *const h) const
+	{
+		evas_object_size_hint_weight_get(getEo(), w, h);
+	}
+
+	inline void Widget::getAlign(double *const w, double *const h) const
+	{
+		evas_object_size_hint_align_get(getEo(), w, h);
+	}
+
+	inline void Widget::getMin(int *const w, int *const h) const
+	{
+		evas_object_size_hint_min_get(getEo(), w, h);
+	}
+
+	inline void Widget::getMax(int *const w, int *const h) const
+	{
+		evas_object_size_hint_max_get(getEo(), w, h);
+	}
+
+	inline void Widget::setFocused(const bool value)
+	{
+		setFocusedImpl(value);
+	}
+
+	inline bool Widget::isFocused() const
+	{
+		return isFocusedImpl();
+	}
+
+	// Non-member functions //
+
+	inline void getPosition(const Widget &widget, int &x, int &y)
+	{
+		widget.getGeometry(&x, &y, nullptr, nullptr);
+	}
+
+	inline void getSize(const Widget &widget, int &w, int &h)
+	{
+		widget.getGeometry(nullptr, nullptr, &w, &h);
+	}
+
+	inline void show(Widget &widget)
+	{
+		widget.setVisible(true);
+	}
+
+	inline void hide(Widget &widget)
+	{
+		widget.setVisible(false);
+	}
+
+	inline void focus(Widget &widget)
+	{
+		widget.setFocused(true);
+	}
+
+	inline void unfocus(Widget &widget)
+	{
+		widget.setFocused(false);
+	}
+
+	inline void expand(Widget &widget)
+	{
+		widget.setWeight(Widget::EXPAND, Widget::EXPAND);
+	}
+
+	inline void fill(Widget &widget)
+	{
+		widget.setAlign(Widget::FILL, Widget::FILL);
+	}
+
+	inline void expandAndFill(Widget &widget)
+	{
+		expand(widget);
+		fill(widget);
+	}
+}
diff --git a/ucl/inc/ucl/gui/WidgetItem.h b/ucl/inc/ucl/gui/WidgetItem.h
new file mode 100644
index 0000000..859f324
--- /dev/null
+++ b/ucl/inc/ucl/gui/WidgetItem.h
@@ -0,0 +1,58 @@
+#ifndef __UCL_GUI_WIDGET_ITEM_H__
+#define __UCL_GUI_WIDGET_ITEM_H__
+
+#include "Widget.h"
+
+namespace ucl {
+
+	class WidgetItem {
+	public:
+		constexpr WidgetItem();
+		constexpr WidgetItem(nullptr_t);
+		explicit WidgetItem(Elm_Object_Item *it);
+
+		Elm_Object_Item *getIt() const;
+
+		operator Elm_Object_Item *() const;
+
+		void setDelCallback(Evas_Smart_Cb cb) const;
+
+		void del();
+
+		void setData(void *data) const;
+		void *getData() const;
+
+		void setEnabled(bool value) const;
+		bool isEnabled() const;
+
+		void setText(const TString &value) const;
+		void setPartText(EdjePart part, const TString &value) const;
+
+		TString getText() const;
+		TString getPartText(EdjePart part) const;
+
+		void setContent(Evas_Object *content) const;
+		void setPartContent(EdjePart part, Evas_Object *content) const;
+		Evas_Object *unsetContent() const;
+		Evas_Object *unsetPartContent(EdjePart part) const;
+
+		Evas_Object *getContent() const;
+		Evas_Object *getPartContent(EdjePart part) const;
+
+		void emitSignal(EdjeSignal signal, EdjeSignalSrc source) const;
+
+	private:
+		Elm_Object_Item *m_it;
+	};
+
+	// Non-member functions //
+
+	void enable(WidgetItem item);
+	void disable(WidgetItem item);
+
+	bool isValid(WidgetItem item);
+}
+
+#include "WidgetItem.hpp"
+
+#endif // __UCL_GUI_WIDGET_ITEM_H__
diff --git a/ucl/inc/ucl/gui/WidgetItem.hpp b/ucl/inc/ucl/gui/WidgetItem.hpp
new file mode 100644
index 0000000..95c42ad
--- /dev/null
+++ b/ucl/inc/ucl/gui/WidgetItem.hpp
@@ -0,0 +1,122 @@
+namespace ucl {
+
+	constexpr WidgetItem::WidgetItem() :
+		m_it(nullptr)
+	{
+	}
+
+	constexpr WidgetItem::WidgetItem(nullptr_t) :
+		WidgetItem()
+	{
+	}
+
+	inline WidgetItem::WidgetItem(Elm_Object_Item *const it) :
+		m_it(it)
+	{
+	}
+
+	inline Elm_Object_Item *WidgetItem::getIt() const
+	{
+		return m_it;
+	}
+
+	inline WidgetItem::operator Elm_Object_Item *() const
+	{
+		return m_it;
+	}
+
+	inline void WidgetItem::setDelCallback(const Evas_Smart_Cb cb) const
+	{
+		elm_object_item_del_cb_set(getIt(), cb);
+	}
+
+	inline void WidgetItem::del()
+	{
+		elm_object_item_del(m_it);
+		m_it = nullptr;
+	}
+
+	inline void WidgetItem::setData(void *const data) const
+	{
+		elm_object_item_data_set(getIt(), data);
+	}
+
+	inline void *WidgetItem::getData() const
+	{
+		return elm_object_item_data_get(getIt());
+	}
+
+	inline void WidgetItem::setEnabled(const bool value) const
+	{
+		elm_object_item_disabled_set(getIt(), toEina(!value));
+	}
+
+	inline bool WidgetItem::isEnabled() const
+	{
+		return (elm_object_item_disabled_get(getIt()) ? false : true);
+	}
+
+	inline TString WidgetItem::getText() const
+	{
+		return elm_object_item_text_get(getIt());
+	}
+
+	inline TString WidgetItem::getPartText(const EdjePart part) const
+	{
+		return elm_object_item_part_text_get(getIt(), part.name);
+	}
+
+	inline void WidgetItem::setContent(Evas_Object *const content) const
+	{
+		elm_object_item_content_set(getIt(), content);
+	}
+
+	inline void WidgetItem::setPartContent(const EdjePart part,
+			Evas_Object *const content) const
+	{
+		elm_object_item_part_content_set(getIt(), part.name, content);
+	}
+
+	inline Evas_Object *WidgetItem::unsetContent() const
+	{
+		return elm_object_item_content_unset(getIt());
+	}
+
+	inline Evas_Object *WidgetItem::unsetPartContent(const EdjePart part) const
+	{
+		return elm_object_item_part_content_unset(getIt(), part.name);
+	}
+
+	inline Evas_Object *WidgetItem::getContent() const
+	{
+		return elm_object_item_content_get(getIt());
+	}
+
+	inline Evas_Object *WidgetItem::getPartContent(const EdjePart part) const
+	{
+		return elm_object_item_part_content_get(getIt(), part.name);
+	}
+
+	inline void WidgetItem::emitSignal(const EdjeSignal signal,
+			const EdjeSignalSrc source) const
+	{
+		elm_object_item_signal_emit(getIt(), signal.name, source.name);
+	}
+
+	// Non-member functions //
+
+	inline void enable(WidgetItem item)
+	{
+		item.setEnabled(true);
+	}
+
+	inline void disable(WidgetItem item)
+	{
+		item.setEnabled(false);
+	}
+
+	inline bool isValid(WidgetItem item)
+	{
+		return !!item.getIt();
+	}
+}
diff --git a/ucl/inc/ucl/gui/Window.h b/ucl/inc/ucl/gui/Window.h
new file mode 100644
index 0000000..e0d49ed
--- /dev/null
+++ b/ucl/inc/ucl/gui/Window.h
@@ -0,0 +1,87 @@
+#ifndef __UCL_GUI_WINDOW_H__
+#define __UCL_GUI_WINDOW_H__
+
+#include <vector>
+
+#include "StyledWidget.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(Window);
+
+	class Window : public ElmWidget {
+	public:
+		static constexpr SmartEvent ROTATION_CHANGED {"wm,rotation,changed"};
+
+		enum class Type {
+			BASIC = ELM_WIN_BASIC
+		};
+
+		class Builder {
+		public:
+			Builder();
+
+			Builder &setWinEo(Evas_Object *value);
+
+			Builder &setType(Type type);
+			Builder &setName(std::string value);
+
+			Builder &setTitle(std::string value);
+			Builder &setSetIndicatorVisible(bool value);
+			Builder &setRotations(std::vector<int> value);
+
+			Builder &setIsOwner(bool value);
+			Builder &setNeedBindToEo(bool value);
+
+			WindowSRef build() const;
+		private:
+			std::string m_name;
+			std::string m_title;
+			std::vector<int> m_rotations;
+			Evas_Object *m_winEo;
+			Type m_type;
+			bool m_isIndicatorVisible;
+			bool m_isOwner;
+			bool m_isOwnerWasSet;
+			bool m_needBindToEo;
+		};
+
+	public:
+		StyledWidget &getConformant();
+		const StyledWidget &getConformant() const;
+
+		void setTitle(const std::string &title);
+		std::string getTitle() const;
+
+		void setIndicatorVisible(bool value);
+		bool isIndicatorVisible() const;
+
+		bool isRotationsSupported() const;
+		void setRotations(const std::vector<int> &value);
+
+		void lower();
+
+	private:
+		friend class RefCountObj<Window>;
+		Window(RefCountObjBase *rc, Evas_Object *eo,
+				bool isOwner, Evas_Object *conform);
+
+	private:
+		StyledWidget m_conform;
+	};
+
+	// Non-member functions //
+
+	// Window //
+
+	void showIndicator(Window &win);
+	void hideIndicator(Window &win);
+
+	// Window::Type //
+
+	bool isValid(Window::Type winType);
+}
+
+#include "Window.hpp"
+
+#endif // __UCL_GUI_WINDOW_H__
diff --git a/ucl/inc/ucl/gui/Window.hpp b/ucl/inc/ucl/gui/Window.hpp
new file mode 100644
index 0000000..eece848
--- /dev/null
+++ b/ucl/inc/ucl/gui/Window.hpp
@@ -0,0 +1,152 @@
+#include <algorithm>
+
+namespace ucl {
+
+	// Window::Builder //
+
+	inline Window::Builder::Builder() :
+		m_rotations({0}),
+		m_winEo(nullptr),
+		m_type(Type::BASIC),
+		m_isIndicatorVisible(false),
+		m_isOwner(false),
+		m_isOwnerWasSet(false),
+		m_needBindToEo(true)
+	{
+	}
+
+	inline Window::Builder &Window::Builder::setWinEo(Evas_Object *const value)
+	{
+		m_winEo = value;
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setType(const Type type)
+	{
+		m_type = type;
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setName(std::string value)
+	{
+		m_name = std::move(value);
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setTitle(std::string value)
+	{
+		m_title = std::move(value);
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setSetIndicatorVisible(
+			const bool value)
+	{
+		m_isIndicatorVisible = value;
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setRotations(
+			std::vector<int> value)
+	{
+		m_rotations = std::move(value);
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setIsOwner(const bool value)
+	{
+		m_isOwner = value;
+		m_isOwnerWasSet = true;
+		return *this;
+	}
+
+	inline Window::Builder &Window::Builder::setNeedBindToEo(const bool value)
+	{
+		m_needBindToEo = value;
+		return *this;
+	}
+
+	// Window //
+
+	inline Window::Window(RefCountObjBase *const rc, Evas_Object *const eo,
+			const bool isOwner, Evas_Object *const conform) :
+		ElmWidget(rc, eo, isOwner),
+		m_conform(conform)
+	{
+	}
+
+	inline StyledWidget &Window::getConformant()
+	{
+		return m_conform;
+	}
+
+	inline const StyledWidget &Window::getConformant() const
+	{
+		return m_conform;
+	}
+
+	inline void Window::setTitle(const std::string &title)
+	{
+		elm_win_title_set(getEo(), title.c_str());
+	}
+
+	inline std::string Window::getTitle() const
+	{
+		return elm_win_title_get(getEo());
+	}
+
+	inline void Window::setIndicatorVisible(bool value)
+	{
+		if (value) {
+			elm_win_indicator_mode_set(getEo(), ELM_WIN_INDICATOR_SHOW);
+		} else {
+			elm_win_indicator_mode_set(getEo(), ELM_WIN_INDICATOR_HIDE);
+		}
+	}
+
+	inline bool Window::isIndicatorVisible() const
+	{
+		return (elm_win_indicator_mode_get(getEo()) == ELM_WIN_INDICATOR_SHOW);
+	}
+
+	inline bool Window::isRotationsSupported() const
+	{
+		return elm_win_wm_rotation_supported_get(getEo());
+	}
+
+	inline void Window::setRotations(const std::vector<int> &value)
+	{
+		elm_win_wm_rotation_available_rotations_set(getEo(),
+				value.data(), value.size());
+	}
+
+	inline void Window::lower()
+	{
+		elm_win_lower(getEo());
+	}
+
+	// Non-member functions //
+
+	// Window //
+
+	inline void showIndicator(Window &win)
+	{
+		win.setIndicatorVisible(true);
+	}
+
+	inline void hideIndicator(Window &win)
+	{
+		win.setIndicatorVisible(false);
+	}
+
+	// Window::Type //
+
+	inline bool isValid(Window::Type winType)
+	{
+		switch (winType) {
+		case Window::Type::BASIC:
+			return true;
+		}
+		return false;
+	}
+}
diff --git a/ucl/inc/ucl/gui/helpers.h b/ucl/inc/ucl/gui/helpers.h
new file mode 100644
index 0000000..68c9ff6
--- /dev/null
+++ b/ucl/inc/ucl/gui/helpers.h
@@ -0,0 +1,74 @@
+#ifndef __UCL_GUI_HELPERS_H__
+#define __UCL_GUI_HELPERS_H__
+
+#include "Widget.h"
+
+namespace ucl {
+
+	// Converts Evas_Object to Widget pointer //
+
+	Widget *asWidget(Evas_Object *eo);
+	const Widget *asWidget(const Evas_Object *eo);
+
+	// Widget casting functions from Evas_Object //
+
+	template <class WIDGET_TYPE>
+	inline auto staticCast(Evas_Object *eo) ->
+			decltype(static_cast<WIDGET_TYPE *>(asWidget(eo)))
+	{
+		return static_cast<WIDGET_TYPE *>(asWidget(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto staticCast(const Evas_Object *eo) ->
+			decltype(static_cast<WIDGET_TYPE *>(asWidget(eo)))
+	{
+		return static_cast<WIDGET_TYPE *>(asWidget(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto dynamicCast(Evas_Object *eo) ->
+			decltype(dynamic_cast<WIDGET_TYPE *>(asWidget(eo)))
+	{
+		return dynamic_cast<WIDGET_TYPE *>(asWidget(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto dynamicCast(const Evas_Object *eo) ->
+			decltype(dynamic_cast<WIDGET_TYPE *>(asWidget(eo)))
+	{
+		return dynamic_cast<WIDGET_TYPE *>(asWidget(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto staticRefCast(Evas_Object *eo) ->
+			decltype(asShared(staticCast<WIDGET_TYPE>(eo)))
+	{
+		return asShared(staticCast<WIDGET_TYPE>(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto staticRefCast(const Evas_Object *eo) ->
+			decltype(asShared(staticCast<WIDGET_TYPE>(eo)))
+	{
+		return asShared(staticCast<WIDGET_TYPE>(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto dynamicRefCast(Evas_Object *eo) ->
+			decltype(asShared(dynamicCast<WIDGET_TYPE>(eo)))
+	{
+		return asShared(dynamicCast<WIDGET_TYPE>(eo));
+	}
+
+	template <class WIDGET_TYPE>
+	inline auto dynamicRefCast(const Evas_Object *eo) ->
+			decltype(asShared(dynamicCast<WIDGET_TYPE>(eo)))
+	{
+		return asShared(dynamicCast<WIDGET_TYPE>(eo));
+	}
+}
+
+#include "helpers.hpp"
+
+#endif // __UCL_GUI_HELPERS_H__
diff --git a/ucl/inc/ucl/gui/helpers.hpp b/ucl/inc/ucl/gui/helpers.hpp
new file mode 100644
index 0000000..abe3cf6
--- /dev/null
+++ b/ucl/inc/ucl/gui/helpers.hpp
@@ -0,0 +1,15 @@
+namespace ucl {
+
+	inline Widget *asWidget(Evas_Object *eo)
+	{
+		return static_cast<Widget *>(
+				evas_object_data_get(eo, impl::WIDGET_DATA_NAME));
+
+	}
+
+	inline const Widget *asWidget(const Evas_Object *eo)
+	{
+		return static_cast<const Widget *>(
+				evas_object_data_get(eo, impl::WIDGET_DATA_NAME));
+	}
+}
diff --git a/ucl/inc/ucl/gui/stdTheme.h b/ucl/inc/ucl/gui/stdTheme.h
new file mode 100644
index 0000000..ad77e4a
--- /dev/null
+++ b/ucl/inc/ucl/gui/stdTheme.h
@@ -0,0 +1,7 @@
+#ifndef __UCL_GUI_STD_THEME_H__
+#define __UCL_GUI_STD_THEME_H__
+
+#include "stdTheme/common.h"
+#include "stdTheme/layout.h"
+
+#endif // __UCL_GUI_STD_THEME_H__
diff --git a/ucl/inc/ucl/gui/stdTheme/common.h b/ucl/inc/ucl/gui/stdTheme/common.h
new file mode 100644
index 0000000..5fbdb0b
--- /dev/null
+++ b/ucl/inc/ucl/gui/stdTheme/common.h
@@ -0,0 +1,18 @@
+#ifndef __UCL_GUI_STD_THEME_COMMON_H__
+#define __UCL_GUI_STD_THEME_COMMON_H__
+
+#include "ucl/gui/types.h"
+
+namespace ucl {
+
+	// Styles //
+
+	constexpr ElmStyle STYLE_DEFAULT {"default"};
+
+	// Parts //
+
+	constexpr EdjePart PART_TEXT    {"elm.text"};
+	constexpr EdjePart PART_CONTENT {"elm.swallow.content"};
+}
+
+#endif // __UCL_GUI_STD_THEME_COMMON_H__
diff --git a/ucl/inc/ucl/gui/stdTheme/layout.h b/ucl/inc/ucl/gui/stdTheme/layout.h
new file mode 100644
index 0000000..6f4144e
--- /dev/null
+++ b/ucl/inc/ucl/gui/stdTheme/layout.h
@@ -0,0 +1,11 @@
+#ifndef __UCL_GUI_STD_THEME_LAYOUT_H__
+#define __UCL_GUI_STD_THEME_LAYOUT_H__
+
+#include "common.h"
+
+namespace ucl {
+
+	constexpr LayoutTheme LAYOUT_DEFAULT {"layout", "application", "default"};
+}
+
+#endif // __UCL_GUI_STD_THEME_LAYOUT_H__
diff --git a/ucl/inc/ucl/gui/types.h b/ucl/inc/ucl/gui/types.h
new file mode 100644
index 0000000..f14ea3d
--- /dev/null
+++ b/ucl/inc/ucl/gui/types.h
@@ -0,0 +1,91 @@
+#ifndef __UCL_GUI_TYPES_H__
+#define __UCL_GUI_TYPES_H__
+
+#include <Elementary.h>
+
+#include "ucl/util/types.h"
+#include "ucl/util/memory.h"
+#include "ucl/util/delegation.h"
+
+#include "ucl/misc/smartDelegation.h"
+#include "ucl/misc/Aspect.h"
+#include "ucl/misc/TString.h"
+
+namespace ucl {
+
+	// Aspects //
+
+	struct EdjePart : Aspect<EdjePart> { using Aspect::Aspect; };
+	struct EdjeGroup : Aspect<EdjeGroup> { using Aspect::Aspect; };
+
+	struct EdjeSignal : Aspect<EdjeSignal> { using Aspect::Aspect; };
+	struct EdjeSignalSrc : Aspect<EdjeSignalSrc> { using Aspect::Aspect; };
+
+	struct ElmStyle : Aspect<ElmStyle> { using Aspect::Aspect; };
+
+	struct SmartEvent : Aspect<SmartEvent> { using Aspect::Aspect; };
+
+	// WidgetEventHandler //
+
+	class Widget;
+
+	using WidgetEventHandler =
+			WeakDelegate<void(Widget &widget, void *eventInfo)>;
+
+	// WidgetEvent //
+
+	enum class WidgetEvent {
+		DEL  = EVAS_CALLBACK_DEL,
+		FREE = EVAS_CALLBACK_FREE,
+
+		MOUSE_IN    = EVAS_CALLBACK_MOUSE_IN,
+		MOUSE_OUT   = EVAS_CALLBACK_MOUSE_OUT,
+		MOUSE_DOWN  = EVAS_CALLBACK_MOUSE_DOWN,
+		MOUSE_UP    = EVAS_CALLBACK_MOUSE_UP,
+		MOUSE_MOVE  = EVAS_CALLBACK_MOUSE_MOVE,
+		MOUSE_WHEEL = EVAS_CALLBACK_MOUSE_WHEEL,
+
+		MULTI_DOWN = EVAS_CALLBACK_MULTI_DOWN,
+		MULTI_UP   = EVAS_CALLBACK_MULTI_UP,
+		MULTI_MOVE = EVAS_CALLBACK_MULTI_MOVE,
+
+		MOVE    = EVAS_CALLBACK_MOVE,
+		RESIZE  = EVAS_CALLBACK_RESIZE,
+		RESTACK = EVAS_CALLBACK_RESTACK,
+
+		CHANGED_SIZE_HINTS = EVAS_CALLBACK_CHANGED_SIZE_HINTS,
+
+		KEY_DOWN  = EVAS_CALLBACK_KEY_DOWN,
+		KEY_UP    = EVAS_CALLBACK_KEY_UP,
+		FOCUS_IN  = EVAS_CALLBACK_FOCUS_IN,
+		FOCUS_OUT = EVAS_CALLBACK_FOCUS_OUT,
+
+		SHOW = EVAS_CALLBACK_SHOW,
+		HIDE = EVAS_CALLBACK_HIDE,
+
+		HOLD = EVAS_CALLBACK_HOLD,
+
+		IMAGE_PRELOADED = EVAS_CALLBACK_IMAGE_PRELOADED
+	};
+
+	// LayoutTheme //
+
+	struct LayoutTheme {
+		const char *klass;
+		const char *group;
+		const char *style;
+
+		constexpr LayoutTheme();
+		constexpr LayoutTheme(nullptr_t);
+		constexpr LayoutTheme(const char *klass,
+				const char *group, const char *style);
+	};
+
+	// LayoutTheme non-member functions //
+
+	constexpr bool isValid(const LayoutTheme &value);
+}
+
+#include "types.hpp"
+
+#endif // __UCL_GUI_TYPES_H__
diff --git a/ucl/inc/ucl/gui/types.hpp b/ucl/inc/ucl/gui/types.hpp
new file mode 100644
index 0000000..ed7ba8d
--- /dev/null
+++ b/ucl/inc/ucl/gui/types.hpp
@@ -0,0 +1,34 @@
+#include "ucl/util/helpers.h"
+
+namespace ucl {
+
+	// LayoutTheme //
+
+	constexpr LayoutTheme::LayoutTheme() :
+		klass(nullptr),
+		group(nullptr),
+		style(nullptr)
+	{
+	}
+
+	constexpr LayoutTheme::LayoutTheme(nullptr_t) :
+		LayoutTheme()
+	{
+	}
+
+	constexpr LayoutTheme::LayoutTheme(const char *klass,
+			const char *group, const char *style) :
+		klass(klass),
+		group(group),
+		style(style)
+	{
+	}
+
+	// LayoutTheme non-member functions //
+
+	constexpr bool isValid(const LayoutTheme &value)
+	{
+		return (isNotEmpty(value.klass) && isNotEmpty(value.group) &&
+					isNotEmpty(value.style));
+	}
+}
diff --git a/ucl/inc/ucl/misc/Aspect.h b/ucl/inc/ucl/misc/Aspect.h
new file mode 100644
index 0000000..4a0f782
--- /dev/null
+++ b/ucl/inc/ucl/misc/Aspect.h
@@ -0,0 +1,32 @@
+#ifndef __UCL_MISC_ASPECT_H__
+#define __UCL_MISC_ASPECT_H__
+
+#include "ucl/util/types.h"
+
+namespace ucl {
+
+	template <class CHILD>
+	struct Aspect {
+		const char *name;
+
+		constexpr Aspect();
+		constexpr Aspect(nullptr_t);
+		explicit constexpr Aspect(const char *name);
+
+		constexpr operator const char *() const;
+	};
+
+	// Non-member functions //
+
+	template <class CHILD>
+	constexpr bool isValid(Aspect<CHILD> aspect);
+
+	template <class CHILD>
+	constexpr bool operator==(Aspect<CHILD> lhs, Aspect<CHILD> rhs);
+	template <class CHILD>
+	constexpr bool operator!=(Aspect<CHILD> lhs, Aspect<CHILD> rhs);
+}
+
+#include "Aspect.hpp"
+
+#endif // __UCL_MISC_ASPECT_H__
diff --git a/ucl/inc/ucl/misc/Aspect.hpp b/ucl/inc/ucl/misc/Aspect.hpp
new file mode 100644
index 0000000..18adcb2
--- /dev/null
+++ b/ucl/inc/ucl/misc/Aspect.hpp
@@ -0,0 +1,50 @@
+#include <cstring>
+
+#include "ucl/util/helpers.h"
+
+namespace ucl {
+
+	template <class CHILD>
+	constexpr Aspect<CHILD>::Aspect() :
+		name(nullptr)
+	{
+	}
+
+	template <class CHILD>
+	constexpr Aspect<CHILD>::Aspect(nullptr_t) :
+		Aspect()
+	{
+	}
+
+	template <class CHILD>
+	constexpr Aspect<CHILD>::Aspect(const char *name) :
+		name(name)
+	{
+	}
+
+	template <class CHILD>
+	constexpr Aspect<CHILD>::operator const char *() const
+	{
+		return name;
+	}
+
+	// Non-member functions //
+
+	template <class CHILD>
+	constexpr bool isValid(const Aspect<CHILD> aspect)
+	{
+		return isNotEmpty(aspect);
+	}
+
+	template <class CHILD>
+	constexpr bool operator==(Aspect<CHILD> lhs, Aspect<CHILD> rhs)
+	{
+		return (strCmpSafe(lhs.name, rhs.name) == 0);
+	}
+
+	template <class CHILD>
+	constexpr bool operator!=(Aspect<CHILD> lhs, Aspect<CHILD> rhs)
+	{
+		return (strCmpSafe(lhs.name, rhs.name) != 0);
+	}
+}
diff --git a/ucl/inc/ucl/misc/Event.h b/ucl/inc/ucl/misc/Event.h
new file mode 100644
index 0000000..5ebc4f8
--- /dev/null
+++ b/ucl/inc/ucl/misc/Event.h
@@ -0,0 +1,46 @@
+#ifndef __UCL_MISC_EVENT_H__
+#define __UCL_MISC_EVENT_H__
+
+#include <vector>
+
+#include "ucl/util/types.h"
+
+namespace ucl {
+
+	template <class DELEGATE>
+	class Event {
+	public:
+		Event();
+
+		template <class DELEGATE2>
+		void operator+=(DELEGATE2 &&delegate);
+		template <class DELEGATE2>
+		void operator-=(const DELEGATE2 &delegate);
+
+		bool isEmpty() const;
+
+		template <class ...ARGS>
+		void invoke(ARGS &&...args);
+		template <class PREDICATE, class ...ARGS>
+		void invokePred(PREDICATE &&pred, ARGS &&...args);
+
+	private:
+		template <class DO_INVOKE, class ...ARGS>
+		void invokeImpl(const DO_INVOKE &doInvoke, ARGS &&...args);
+
+		void lock();
+		void unlock();
+		bool isLocked() const;
+
+		void defrag();
+
+	private:
+		std::vector<DELEGATE> m_delegates;
+		int m_lockCount;
+		bool m_isFragmented;
+	};
+}
+
+#include "Event.hpp"
+
+#endif // __UCL_MISC_EVENT_H__
diff --git a/ucl/inc/ucl/misc/Event.hpp b/ucl/inc/ucl/misc/Event.hpp
new file mode 100644
index 0000000..17c0a53
--- /dev/null
+++ b/ucl/inc/ucl/misc/Event.hpp
@@ -0,0 +1,140 @@
+#include <algorithm>
+
+namespace ucl { namespace { namespace impl {
+
+	template <class PREDICATE, class DELEGATE, class ...ARGS>
+	auto doInvokePred(PREDICATE &&pred,
+			const DELEGATE &delegate, ARGS &&...args) ->
+				decltype(pred(delegate(std::forward<ARGS>(args)...)))
+	{
+		return pred(delegate(std::forward<ARGS>(args)...));
+	}
+
+	template <class DELEGATE, class PREDICATE, class ...ARGS>
+	auto doInvokePred(PREDICATE &&pred,
+			const DELEGATE &delegate, ARGS &&...args) -> decltype(pred())
+	{
+		delegate(std::forward<ARGS>(args)...);
+		return pred();
+	}
+}}}
+
+namespace ucl {
+
+	template <class DELEGATE>
+	Event<DELEGATE>::Event() :
+		m_lockCount(0),
+		m_isFragmented(false)
+	{
+	}
+
+	template <class DELEGATE>
+	template <class DELEGATE2>
+	void Event<DELEGATE>::operator+=(DELEGATE2 &&delegate)
+	{
+		if (delegate && std::find(m_delegates.begin(), m_delegates.end(),
+				delegate) == m_delegates.end()) {
+			m_delegates.emplace_back(std::forward<DELEGATE2>(delegate));
+		}
+	}
+
+	template <class DELEGATE>
+	template <class DELEGATE2>
+	void Event<DELEGATE>::operator-=(const DELEGATE2 &delegate)
+	{
+		const auto it = std::find(
+				m_delegates.begin(), m_delegates.end(), delegate);
+		if (it != m_delegates.end()) {
+			if (isLocked()) {
+				*it = {};
+				m_isFragmented = true;
+			} else {
+				m_delegates.erase(it);
+			}
+		}
+	}
+
+	template <class DELEGATE>
+	bool Event<DELEGATE>::isEmpty() const
+	{
+		return (isLocked() ? false : m_delegates.empty());
+	}
+
+	template <class DELEGATE>
+	template <class ...ARGS>
+	void Event<DELEGATE>::invoke(ARGS &&...args)
+	{
+		invokeImpl(
+			[](const DELEGATE &delegate, ARGS &&...args)
+			{
+				delegate(std::forward<ARGS>(args)...);
+				return true;
+			},
+			std::forward<ARGS>(args)...);
+	}
+
+	template <class DELEGATE>
+	template <class PREDICATE, class ...ARGS>
+	void Event<DELEGATE>::invokePred(PREDICATE &&pred, ARGS &&...args)
+	{
+		invokeImpl(
+			[&pred](const DELEGATE &delegate, ARGS &&...args)
+			{
+				return impl::doInvokePred(std::forward<PREDICATE>(pred),
+						delegate, std::forward<ARGS>(args)...);
+			},
+			std::forward<ARGS>(args)...);
+	}
+
+	template <class DELEGATE>
+	template <class DO_INVOKE, class ...ARGS>
+	void Event<DELEGATE>::invokeImpl(const DO_INVOKE &doInvoke, ARGS &&...args)
+	{
+		lock();
+		for (size_t i = 0; i < m_delegates.size(); ++i) {
+			const auto &delegate = m_delegates[i];
+			if (delegate) {
+				if (!doInvoke(delegate, std::forward<ARGS>(args)...)) {
+					break;
+				}
+			} else {
+				m_isFragmented = true;
+			}
+		}
+		unlock();
+		defrag();
+	}
+
+	template <class DELEGATE>
+	void Event<DELEGATE>::lock()
+	{
+		++m_lockCount;
+	}
+
+	template <class DELEGATE>
+	void Event<DELEGATE>::unlock()
+	{
+		--m_lockCount;
+	}
+
+	template <class DELEGATE>
+	bool Event<DELEGATE>::isLocked() const
+	{
+		return (m_lockCount > 0);
+	}
+
+	template <class DELEGATE>
+	void Event<DELEGATE>::defrag()
+	{
+		if (m_isFragmented) {
+			m_isFragmented = false;
+			m_delegates.erase(
+				std::remove_if(m_delegates.begin(), m_delegates.end(),
+					[](const DELEGATE &delegate) -> bool
+					{
+						return !delegate;
+					}),
+				m_delegates.end());
+		}
+	}
+}
diff --git a/ucl/inc/ucl/misc/HashMap.h b/ucl/inc/ucl/misc/HashMap.h
new file mode 100644
index 0000000..ac6d455
--- /dev/null
+++ b/ucl/inc/ucl/misc/HashMap.h
@@ -0,0 +1,47 @@
+#ifndef __UCL_MISC_HASH_MAP_H__
+#define __UCL_MISC_HASH_MAP_H__
+
+#include <unordered_map>
+
+#include "Variant.h"
+
+namespace ucl {
+
+	template <class KEY, class VALUE>
+	class HashMap;
+
+	template <class VALUE>
+	using Dict = HashMap<std::string, VALUE>;
+
+	using VarDict = Dict<Variant>;
+
+	template <class KEY, class VALUE>
+	class HashMap {
+	public:
+		template <class VALUE2>
+		HashMap &set(const KEY &key, VALUE2 &&value);
+		HashMap &unset(const KEY &key);
+
+		template <class VALUE2>
+		bool get(const KEY &key, VALUE2 &value) const;
+		VALUE get(const KEY &key) const;
+
+	private:
+		template <class ENUM_CLASS>
+		struct EnumClassHash {
+			size_t operator()(ENUM_CLASS key) const {
+				return static_cast<size_t>(key);
+			}
+		};
+
+		using Hash = typename std::conditional<std::is_enum<KEY>::value,
+				EnumClassHash<KEY>, std::hash<KEY>>::type;
+
+	private:
+		std::unordered_map<KEY, VALUE, Hash> m_map;
+	};
+}
+
+#include "HashMap.hpp"
+
+#endif // __UCL_MISC_HASH_MAP_H__
diff --git a/ucl/inc/ucl/misc/HashMap.hpp b/ucl/inc/ucl/misc/HashMap.hpp
new file mode 100644
index 0000000..8b64692
--- /dev/null
+++ b/ucl/inc/ucl/misc/HashMap.hpp
@@ -0,0 +1,43 @@
+namespace ucl {
+
+	template <class KEY, class VALUE>
+	template <class VALUE2>
+	HashMap<KEY, VALUE> &HashMap<KEY, VALUE>::
+			set(const KEY &key, VALUE2 &&value)
+	{
+		m_map.emplace(key, std::forward<VALUE2>(value));
+		return *this;
+	}
+
+	template <class KEY, class VALUE>
+	HashMap<KEY, VALUE> &HashMap<KEY, VALUE>::
+			unset(const KEY &key)
+	{
+		m_map.erase(key);
+		return *this;
+	}
+
+	template <class KEY, class VALUE>
+	template <class VALUE2>
+	bool HashMap<KEY, VALUE>::
+			get(const KEY &key, VALUE2 &value) const
+	{
+		const auto it = m_map.find(key);
+		if (it == m_map.end()) {
+			return false;
+		}
+		value = it->second;
+		return true;
+	}
+
+	template <class KEY, class VALUE>
+	VALUE HashMap<KEY, VALUE>::
+			get(const KEY &key) const
+	{
+		const auto it = m_map.find(key);
+		if (it == m_map.end()) {
+			return {};
+		}
+		return it->second;
+	}
+}
diff --git a/ucl/inc/ucl/misc/SharedObject.h b/ucl/inc/ucl/misc/SharedObject.h
new file mode 100644
index 0000000..a62fefd
--- /dev/null
+++ b/ucl/inc/ucl/misc/SharedObject.h
@@ -0,0 +1,47 @@
+#ifndef __UCL_MISC_SHARED_OBJECT_H__
+#define __UCL_MISC_SHARED_OBJECT_H__
+
+#include "ucl/util/types.h"
+#include "ucl/util/memory.h"
+
+namespace ucl {
+
+	UCL_DECLARE_REF_ALIASES(SharedObject);
+
+	class SharedObject : public NonCopyable {
+	public:
+		template <class T>
+		SharedRef<T> asShared();
+		template <class T>
+		WeakRef<T> asWeak();
+
+		template <class T>
+		SharedRef<const T> asShared() const;
+		template <class T>
+		WeakRef<const T> asWeak() const;
+
+		SharedObjectSRef asShared();
+		SharedObjectWRef asWeak();
+
+		SharedObjectSCRef asShared() const;
+		SharedObjectWCRef asWeak() const;
+
+	protected:
+		SharedObject(RefCountObjBase *rc);
+		~SharedObject() = default;
+
+	protected:
+		RefCountObjBase *const m_rc;
+	};
+
+	// Non-member functions //
+
+	template <class T>
+	SharedRef<T> asShared(T *obj);
+	template <class T>
+	WeakRef<T> asWeak(T *obj);
+}
+
+#include "SharedObject.hpp"
+
+#endif // __UCL_MISC_SHARED_OBJECT_H__
diff --git a/ucl/inc/ucl/misc/SharedObject.hpp b/ucl/inc/ucl/misc/SharedObject.hpp
new file mode 100644
index 0000000..75a09a2
--- /dev/null
+++ b/ucl/inc/ucl/misc/SharedObject.hpp
@@ -0,0 +1,81 @@
+namespace ucl {
+
+	inline SharedObject::SharedObject(RefCountObjBase *const rc) :
+		m_rc(rc)
+	{
+	}
+
+	template <class T>
+	inline SharedRef<T> SharedObject::asShared()
+	{
+		if (!m_rc) {
+			return {};
+		}
+		return {m_rc, static_cast<T *>(this)};
+	}
+
+	template <class T>
+	inline WeakRef<T> SharedObject::asWeak()
+	{
+		if (!m_rc) {
+			return {};
+		}
+		return {m_rc, static_cast<T *>(this)};
+	}
+
+	template <class T>
+	inline SharedRef<const T> SharedObject::asShared() const
+	{
+		if (!m_rc) {
+			return {};
+		}
+		return {m_rc, static_cast<const T *>(this)};
+	}
+
+	template <class T>
+	inline WeakRef<const T> SharedObject::asWeak() const
+	{
+		if (!m_rc) {
+			return {};
+		}
+		return {m_rc, static_cast<const T *>(this)};
+	}
+
+	inline SharedObjectSRef SharedObject::asShared()
+	{
+		return asShared<SharedObject>();
+	}
+
+	inline SharedObjectWRef SharedObject::asWeak()
+	{
+		return asWeak<SharedObject>();
+	}
+
+	inline SharedObjectSCRef SharedObject::asShared() const
+	{
+		return asShared<SharedObject>();
+	}
+
+	inline SharedObjectWCRef SharedObject::asWeak() const
+	{
+		return asWeak<SharedObject>();
+	}
+
+	// Non-member functions //
+
+	template <class T>
+	inline SharedRef<T> asShared(T *obj)
+	{
+		return (obj ?
+				obj->asShared<typename std::remove_cv<T>::type>() :
+				SharedRef<T>());
+	}
+
+	template <class T>
+	inline WeakRef<T> asWeak(T *obj)
+	{
+		return (obj ?
+				obj->asWeak<typename std::remove_cv<T>::type>() :
+				WeakRef<T>());
+	}
+}
diff --git a/ucl/inc/ucl/misc/TString.h b/ucl/inc/ucl/misc/TString.h
new file mode 100644
index 0000000..60e03c8
--- /dev/null
+++ b/ucl/inc/ucl/misc/TString.h
@@ -0,0 +1,56 @@
+#ifndef __UCL_MISC_T_STRING_H__
+#define __UCL_MISC_T_STRING_H__
+
+#include "ucl/util/types.h"
+
+namespace ucl {
+
+	class TString {
+	public:
+		TString();
+
+		/**
+		 * Constructs TString from std::string and domain
+		 *
+		 * @param str     Text string or string id if translatable.
+		 * @param domain  Valid domain name or "" for default domain,
+		 *                nullptr - if string is not translatable
+		 */
+		TString(const std::string &str, const char *domain);
+		TString(const std::string &str, bool translatable = false);
+
+		TString(std::string &&str, const char *domain);
+		TString(std::string &&str, bool translatable = false);
+
+		TString(const char *str, const char *domain);
+		TString(const char *str, bool translatable = false);
+
+		bool isEmpty() const;
+
+		bool isTranslatable() const;
+		bool hasDomain() const;
+		const char *getDomain() const;
+
+		const std::string &getStr() const;
+		operator const std::string &() const;
+
+		const char *getCStr() const;
+		operator const char *() const;
+
+		const char *translate() const;
+
+		template <typename ...ARGS>
+		TString format(ARGS ...args) const;
+
+	private:
+		const char *doTranslate(const char *strId) const;
+
+	private:
+		std::string m_str;
+		const char *m_domain;
+	};
+}
+
+#include "TString.hpp"
+
+#endif // __UCL_MISC_T_STRING_H__
diff --git a/ucl/inc/ucl/misc/TString.hpp b/ucl/inc/ucl/misc/TString.hpp
new file mode 100644
index 0000000..9806848
--- /dev/null
+++ b/ucl/inc/ucl/misc/TString.hpp
@@ -0,0 +1,130 @@
+#include <libintl.h>
+#include <app_i18n.h>
+
+#include "ucl/util/helpers.h"
+
+namespace ucl {
+
+	inline TString::TString() :
+		m_domain(nullptr)
+	{
+	}
+
+	inline TString::TString(const std::string &str, const char *const domain) :
+		m_str(str),
+		m_domain(m_str.empty() ? nullptr : domain)
+	{
+	}
+
+	inline TString::TString(const std::string &str, const bool translatable) :
+		TString(str, (translatable ? "" : nullptr))
+	{
+	}
+
+	inline TString::TString(std::string &&str, const char *const domain) :
+		m_str(std::move(str)),
+		m_domain(m_str.empty() ? nullptr : domain)
+	{
+	}
+
+	inline TString::TString(std::string &&str, const bool translatable) :
+		TString(std::move(str), (translatable ? "" : nullptr))
+	{
+	}
+
+	inline TString::TString(const char *const str, const char *const domain) :
+		TString(std::string(nz(str)), domain)
+	{
+	}
+
+	inline TString::TString(const char *const str, const bool translatable) :
+		TString(std::string(nz(str)), (translatable ? "" : nullptr))
+	{
+	}
+
+	inline bool TString::isEmpty() const
+	{
+		return m_str.empty();
+	}
+
+	inline const std::string &TString::getStr() const
+	{
+		return m_str;
+	}
+
+	inline TString::operator const std::string &() const
+	{
+		return m_str;
+	}
+
+	inline const char *TString::getCStr() const
+	{
+		return m_str.c_str();
+	}
+
+	inline TString::operator const char *() const
+	{
+		return m_str.c_str();
+	}
+
+	inline bool TString::isTranslatable() const
+	{
+		return (m_domain != nullptr);
+	}
+
+	inline bool TString::hasDomain() const
+	{
+		return isNotEmpty(m_domain);
+	}
+
+	inline const char *TString::getDomain() const
+	{
+		return m_domain;
+	}
+
+	inline const char *TString::translate() const
+	{
+		if (!m_domain) {
+			return getCStr();
+		}
+		return doTranslate(getCStr());
+	}
+
+	inline const char *TString::doTranslate(const char *const strId) const
+	{
+		if (m_domain[0] == '\0') {
+			return i18n_get_text(strId);
+		}
+		return dgettext(m_domain, strId);
+	}
+
+	template <typename ...ARGS>
+	inline TString TString::format(ARGS ...args) const
+	{
+		constexpr auto STR_LEN_ADJUST = 1.7f;
+
+		const char *fmt = m_str.c_str();
+		size_t fmtLen = m_str.length();
+
+		if (m_domain) {
+			fmt = doTranslate(fmt);
+			fmtLen = strlen(fmt);
+		}
+
+		size_t strLen = static_cast<size_t>(fmtLen * STR_LEN_ADJUST);
+
+		std::string result;
+
+		while (1) {
+			result.resize(strLen);
+			const size_t n = snprintf(&result[0], strLen, fmt, args...);
+			if (n < strLen) {
+				result.resize(n);
+				break;
+			}
+			strLen = n + 1;
+		}
+
+		return {result, false};
+	}
+}
diff --git a/ucl/inc/ucl/misc/Variant.h b/ucl/inc/ucl/misc/Variant.h
new file mode 100644
index 0000000..d8e2a37
--- /dev/null
+++ b/ucl/inc/ucl/misc/Variant.h
@@ -0,0 +1,148 @@
+#ifndef __UCL_MISC_VARIANT_H__
+#define __UCL_MISC_VARIANT_H__
+
+#include <array>
+#include <vector>
+#include <initializer_list>
+
+#include "ucl/util/types.h"
+
+namespace ucl {
+
+	class Variant;
+
+	using VarVector = std::vector<Variant>;
+
+	template <size_t N>
+	using VarArray = std::array<Variant, N>;
+
+	struct VarInitList {
+		VarInitList(const std::initializer_list<Variant> &il) : il(il) {}
+		const std::initializer_list<Variant> &il;
+	};
+
+	class Variant {
+	public:
+		enum Type {
+			TYPE_NIL,
+			TYPE_BOOLEAN,
+			TYPE_INTEGER,
+			TYPE_FLOAT,
+			TYPE_DOUBLE,
+			TYPE_STRING,
+			TYPE_ARRAY
+		};
+
+	private:
+		// Helper to wrap "const char *" and manage its lifetime
+		class CStr : NonCopyable {
+		public:
+			CStr(const char *ptr);
+			CStr(const char *ptr, bool isOwner) noexcept;
+			CStr(CStr &&s);
+			~CStr() noexcept;
+			const char *get() const noexcept;
+			operator const char *() const noexcept;
+		private:
+			const char *const m_ptr;
+			bool m_isOwner;
+		};
+
+	public:
+		friend void swap(Variant &x, Variant &y) noexcept;
+
+		friend bool operator==(const Variant &lhs, const Variant &rhs) noexcept;
+		friend bool operator!=(const Variant &lhs, const Variant &rhs) noexcept;
+
+	public:
+		Variant() noexcept;
+		Variant(nullptr_t) noexcept;
+
+		Variant(bool aBool) noexcept;
+		Variant(int anInt) noexcept;
+		Variant(float aFloat) noexcept;
+		Variant(double aDouble) noexcept;
+
+		Variant(const char *aString);
+		Variant(const char *aString, int length);
+		Variant(const std::string &aString);
+
+		Variant(nullptr_t, int arrayLength);
+		Variant(const Variant *anArray, int length);
+		Variant(const VarVector &anArray);
+		template <size_t N>
+		Variant(const VarArray<N> &anArray);
+		Variant(const VarInitList &anArray);
+
+		~Variant();
+
+		Variant(const Variant &v);
+		Variant(Variant &&v) noexcept;
+
+		Variant &operator=(Variant v);
+
+		Type getType() const noexcept;
+		int getLength() const noexcept;
+		bool isEmpty() const noexcept;
+
+		bool asBool() const noexcept;
+		int asInt() const noexcept;
+		float asFloat() const noexcept;
+		double asDouble() const noexcept;
+
+		CStr asString() const noexcept;
+
+		Variant *asArray() noexcept;
+		const Variant *asArray() const noexcept;
+
+		Variant *begin() noexcept;
+		Variant *end() noexcept;
+		const Variant *begin() const noexcept;
+		const Variant *end() const noexcept;
+
+		Variant &operator[](int index) noexcept;
+		const Variant &operator[](int index) const noexcept;
+
+		explicit operator bool() const noexcept;
+		explicit operator int() const noexcept;
+		explicit operator float() const noexcept;
+		explicit operator double() const noexcept;
+
+		bool operator==(Variant::Type rhs) const noexcept;
+		bool operator!=(Variant::Type rhs) const noexcept;
+
+	private:
+		const char *getStr() const noexcept;
+
+	public:
+		union {
+			uint8_t m_type;
+			struct {
+				uint64_t qw1;
+				uint64_t qw2;
+			} m_raw;
+			struct { uint8_t type; bool value; } m_aBool;
+			struct { uint8_t type; int value; } m_anInt;
+			struct { uint8_t type; float value; } m_aFloat;
+			struct { uint8_t type; double value; } m_aDouble;
+			struct {
+				uint8_t type;
+				char buffer[sizeof(m_raw) - 1];
+			} m_aSmallStr;
+			struct {
+				uint8_t type;
+				int length;
+				char *data;
+			} m_aString;
+			struct {
+				uint8_t type;
+				int length;
+				Variant *data;
+			} m_anArray;
+		};
+	};
+}
+
+#include "Variant.hpp"
+
+#endif // __UCL_MISC_VARIANT_H__
diff --git a/ucl/inc/ucl/misc/Variant.hpp b/ucl/inc/ucl/misc/Variant.hpp
new file mode 100644
index 0000000..4c1dcbb
--- /dev/null
+++ b/ucl/inc/ucl/misc/Variant.hpp
@@ -0,0 +1,272 @@
+#include <cstring>
+
+namespace ucl { namespace { namespace impl {
+
+	constexpr auto TYPE_MASK = 0x0F;
+
+	constexpr auto FLAG_SMALL_STR = 0x80;
+	constexpr auto TYPE_SMALL_STR = (Variant::TYPE_STRING | FLAG_SMALL_STR);
+
+	constexpr auto TMP_STR_BUFF_SIZE = 32;
+}}}
+
+namespace ucl {
+
+	// Variant::CStr //
+
+	inline Variant::CStr::CStr(const char *const ptr) :
+		m_ptr(strdup(ptr)),
+		m_isOwner(true)
+	{
+	}
+
+	inline Variant::CStr::CStr(const char *const ptr,
+			const bool isOwner) noexcept :
+		m_ptr(ptr),
+		m_isOwner(isOwner)
+	{
+	}
+
+	inline Variant::CStr::CStr(CStr &&s) :
+		m_ptr(s.m_ptr),
+		m_isOwner(s.m_isOwner)
+	{
+		s.m_isOwner = false;
+	}
+
+	inline Variant::CStr::~CStr() noexcept
+	{
+		if (m_isOwner) {
+			free(const_cast<char *>(m_ptr));
+		}
+	}
+
+	inline const char *Variant::CStr::get() const noexcept
+	{
+		return m_ptr;
+	}
+
+	inline Variant::CStr::operator const char *() const noexcept
+	{
+		return m_ptr;
+	}
+
+	// Variant //
+
+	inline Variant::Variant() noexcept :
+		m_type(TYPE_NIL)
+	{
+	}
+
+	inline Variant::Variant(nullptr_t) noexcept :
+		Variant()
+	{
+	}
+
+	inline Variant::Variant(const bool aBool) noexcept :
+		m_type(TYPE_BOOLEAN)
+	{
+		m_aBool.value = aBool;
+	}
+
+	inline Variant::Variant(const int anInt) noexcept :
+		m_type(TYPE_INTEGER)
+	{
+		m_anInt.value = anInt;
+	}
+
+	inline Variant::Variant(const float aFloat) noexcept :
+		m_type(TYPE_FLOAT)
+	{
+		m_aFloat.value = aFloat;
+	}
+
+	inline Variant::Variant(const double aDouble) noexcept :
+		m_type(TYPE_DOUBLE)
+	{
+		m_aDouble.value = aDouble;
+	}
+
+	inline Variant::Variant(const char *const aString) :
+		Variant(aString, -1)
+	{
+	}
+
+	inline Variant::Variant(const std::string &aString) :
+		Variant(aString.c_str(), aString.size())
+	{
+	}
+
+	inline Variant::Variant(const VarVector &anArray) :
+		Variant(anArray.data(), anArray.size())
+	{
+	}
+
+	template <size_t N>
+	inline Variant::Variant(const VarArray<N> &anArray) :
+		Variant(anArray.data(), anArray.size())
+	{
+	}
+
+	inline Variant::Variant(const VarInitList &anArray) :
+		Variant(anArray.il.begin(), anArray.il.size())
+	{
+	}
+
+	inline Variant::~Variant()
+	{
+		switch (m_type) {
+		case TYPE_STRING:
+			free(m_aString.data);
+			break;
+		case TYPE_ARRAY:
+			delete[] m_anArray.data;
+			break;
+		}
+	}
+
+	inline Variant::Variant(Variant &&v) noexcept :
+		m_type(v.m_type)
+	{
+		switch (m_type) {
+		case TYPE_NIL:
+			break;
+		case TYPE_STRING:
+			m_aString.data = v.m_aString.data;
+			m_aString.length = v.m_aString.length;
+			v.m_type = TYPE_NIL;
+			break;
+		case TYPE_ARRAY:
+			m_anArray.data = v.m_anArray.data;
+			m_anArray.length = v.m_anArray.length;
+			v.m_type = TYPE_NIL;
+			break;
+		default:
+			m_raw = v.m_raw;
+			break;
+		}
+	}
+
+	inline Variant &Variant::operator=(Variant v)
+	{
+		swap(*this, v);
+		return *this;
+	}
+
+	inline Variant::Type Variant::getType() const noexcept
+	{
+		return Type(m_type & impl::TYPE_MASK);
+	}
+
+	inline int Variant::getLength() const noexcept
+	{
+		switch (m_type) {
+		case TYPE_NIL:
+			return 0;
+		case TYPE_STRING:
+			return m_aString.length;
+		case TYPE_ARRAY:
+			return m_anArray.length;
+		case impl::TYPE_SMALL_STR:
+			return strlen(m_aSmallStr.buffer);
+		}
+		return 1;
+	}
+
+	inline bool Variant::isEmpty() const noexcept
+	{
+		return (getLength() == 0);
+	}
+
+	inline const char *Variant::getStr() const noexcept
+	{
+		return ((m_type == TYPE_STRING) ? m_aString.data : m_aSmallStr.buffer);
+	}
+
+	inline Variant *Variant::asArray() noexcept
+	{
+		return begin();
+	}
+
+	inline const Variant *Variant::asArray() const noexcept
+	{
+		return begin();
+	}
+
+	inline Variant *Variant::begin() noexcept
+	{
+		return ((m_type == TYPE_ARRAY) ? m_anArray.data : this);
+	}
+
+	inline Variant *Variant::end() noexcept
+	{
+		return ((m_type == TYPE_ARRAY) ?
+				(m_anArray.data + m_anArray.length) : (this + 1));
+	}
+
+	inline const Variant *Variant::begin() const noexcept
+	{
+		return const_cast<Variant *>(this)->begin();
+	}
+
+	inline const Variant *Variant::end() const noexcept
+	{
+		return const_cast<Variant *>(this)->end();
+	}
+
+	inline Variant &Variant::operator[](int index) noexcept
+	{
+		return asArray()[index];
+	}
+
+	inline const Variant &Variant::operator[](int index) const noexcept
+	{
+		return asArray()[index];
+	}
+
+	inline Variant::operator bool() const noexcept
+	{
+		return asBool();
+	}
+
+	inline Variant::operator int() const noexcept
+	{
+		return asInt();
+	}
+
+	inline Variant::operator float() const noexcept
+	{
+		return asFloat();
+	}
+
+	inline Variant::operator double() const noexcept
+	{
+		return asDouble();
+	}
+
+	inline bool Variant::operator==(const Variant::Type rhs) const noexcept
+	{
+		return (m_type == rhs);
+	}
+
+	inline bool Variant::operator!=(const Variant::Type rhs) const noexcept
+	{
+		return (m_type != rhs);
+	}
+
+	// Non-member functions //
+
+	inline void swap(Variant &x, Variant &y) noexcept
+	{
+		static_assert(sizeof(Variant) == sizeof(Variant::m_raw),
+				"Invalid Variant data structure!");
+		static_assert(std::is_standard_layout<Variant>::value,
+				"Variant has not standard layout!");
+		std::swap(x.m_raw, y.m_raw);
+	}
+
+	inline bool operator!=(const Variant &lhs, const Variant &rhs) noexcept
+	{
+		return !(lhs == rhs);
+	}
+}
diff --git a/ucl/inc/ucl/misc/smartDelegation.h b/ucl/inc/ucl/misc/smartDelegation.h
new file mode 100644
index 0000000..6f249a0
--- /dev/null
+++ b/ucl/inc/ucl/misc/smartDelegation.h
@@ -0,0 +1,12 @@
+#ifndef __UCL_MISC_SMART_DELEGATION_H__
+#define __UCL_MISC_SMART_DELEGATION_H__
+
+#include "smartDelegation/WeakDelegate.h"
+
+#include "smartDelegation/macro.h"
+
+#if (UCL_INCLUDE_SMART_DELEGATION_SHORT_MACRO_H)
+#include "smartDelegation/shortMacro.h"
+#endif
+
+#endif // __UCL_MISC_SMART_DELEGATION_H__
diff --git a/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.h b/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.h
new file mode 100644
index 0000000..b1792cf
--- /dev/null
+++ b/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.h
@@ -0,0 +1,28 @@
+#ifndef __UCL_MISC_SMART_DELEGATION_WEAK_DELEGATE_H__
+#define __UCL_MISC_SMART_DELEGATION_WEAK_DELEGATE_H__
+
+#include "ucl/util/delegation.h"
+#include "ucl/util/memory.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG>
+	class WeakDelegate;
+
+	template <class R, class ...ARGS>
+	class WeakDelegate<R(ARGS...)> :
+			public BaseDelegate<R(ARGS...), WeakRef<void>> {
+	public:
+		using BaseDelegate<R(ARGS...), WeakRef<void>>::BaseDelegate;
+
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+		static WeakDelegate make(const WeakRef<CLASS> &data) noexcept;
+
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+		static WeakDelegate make(const WeakRef<const CLASS> &data) noexcept;
+	};
+}
+
+#include "WeakDelegate.hpp"
+
+#endif // __UCL_MISC_SMART_DELEGATION_WEAK_DELEGATE_H__
diff --git a/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.hpp b/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.hpp
new file mode 100644
index 0000000..be7c1ac
--- /dev/null
+++ b/ucl/inc/ucl/misc/smartDelegation/WeakDelegate.hpp
@@ -0,0 +1,19 @@
+namespace ucl {
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+	inline WeakDelegate<R(ARGS...)> WeakDelegate<R(ARGS...)>::make(
+			const WeakRef<CLASS> &data) noexcept
+	{
+		return {data, WeakDelegate::Cb::template stubA<CLASS, METHOD>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+	inline WeakDelegate<R(ARGS...)> WeakDelegate<R(ARGS...)>::make(
+			const WeakRef<const CLASS> &data) noexcept
+	{
+		return {constRefCast<CLASS>(data),
+				WeakDelegate::Cb::template stubA<CLASS, METHOD>};
+	}
+}
diff --git a/ucl/inc/ucl/misc/smartDelegation/macro.h b/ucl/inc/ucl/misc/smartDelegation/macro.h
new file mode 100644
index 0000000..24ab614
--- /dev/null
+++ b/ucl/inc/ucl/misc/smartDelegation/macro.h
@@ -0,0 +1,7 @@
+#ifndef __UCL_MISC_SMART_DELEGATION_MACRO_H__
+#define __UCL_MISC_SMART_DELEGATION_MACRO_H__
+
+#define UCL_WEAK_DELEGATE(FUNC, DATA) \
+		_UCL_DELEGATE(::ucl::WeakDelegate, FUNC, DATA)
+
+#endif // __UCL_MISC_SMART_DELEGATION_MACRO_H__
diff --git a/ucl/inc/ucl/misc/smartDelegation/shortMacro.h b/ucl/inc/ucl/misc/smartDelegation/shortMacro.h
new file mode 100644
index 0000000..3893008
--- /dev/null
+++ b/ucl/inc/ucl/misc/smartDelegation/shortMacro.h
@@ -0,0 +1,6 @@
+#ifndef __UCL_MISC_SMART_DELEGATION_SHORT_MACRO_H__
+#define __UCL_MISC_SMART_DELEGATION_SHORT_MACRO_H__
+
+#define WEAK_DELEGATE(FUNC, DATA) UCL_WEAK_DELEGATE(FUNC, DATA)
+
+#endif // __UCL_MISC_SMART_DELEGATION_SHORT_MACRO_H__
diff --git a/ucl/inc/ucl/util/delegation.h b/ucl/inc/ucl/util/delegation.h
new file mode 100644
index 0000000..198c20f
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation.h
@@ -0,0 +1,19 @@
+#ifndef __UCL_UTIL_DELEGATION_H__
+#define __UCL_UTIL_DELEGATION_H__
+
+#include "delegation/Callback.h"
+
+#include "delegation/BaseDelegate.h"
+#include "delegation/BaseDelegate2.h"
+
+#include "delegation/Delegate.h"
+#include "delegation/Delegate2.h"
+
+#include "delegation/helpers.h"
+#include "delegation/macro.h"
+
+#if (UCL_INCLUDE_DELEGATION_SHORT_MACRO_H)
+#include "delegation/shortMacro.h"
+#endif
+
+#endif // __UCL_UTIL_DELEGATION_H__
diff --git a/ucl/inc/ucl/util/delegation/BaseDelegate.h b/ucl/inc/ucl/util/delegation/BaseDelegate.h
new file mode 100644
index 0000000..e4307f0
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/BaseDelegate.h
@@ -0,0 +1,48 @@
+#ifndef __UCL_UTIL_DELEGATION_BASE_DELEGATE_H__
+#define __UCL_UTIL_DELEGATION_BASE_DELEGATE_H__
+
+#include "Callback.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG, class DATA>
+	class BaseDelegate;
+
+	template <class FUNC_SIG, class DATA>
+	class BaseDelegate2;
+
+	template <class R, class ...ARGS, class DATA>
+	class BaseDelegate<R(ARGS...), DATA> {
+	public:
+		using Cb = Callback<R(ARGS...)>;
+		using StubA = typename Cb::StubA;
+
+	public:
+		constexpr BaseDelegate() noexcept;
+		constexpr BaseDelegate(nullptr_t) noexcept;
+
+		template <class FUNC_SIG>
+		BaseDelegate(const BaseDelegate2<FUNC_SIG, DATA> &d) noexcept;
+		template <class FUNC_SIG>
+		BaseDelegate(BaseDelegate2<FUNC_SIG, DATA> &&d) noexcept;
+
+		R operator()(ARGS ...args) const;
+
+		void reset() noexcept;
+
+		const DATA &getData() const noexcept;
+		StubA getStubA() const noexcept;
+		operator bool() const noexcept;
+
+	protected:
+		BaseDelegate(const DATA &data, StubA stubA) noexcept;
+
+	private:
+		DATA m_data;
+		StubA m_stubA;
+	};
+}
+
+#include "BaseDelegate.hpp"
+
+#endif // __UCL_UTIL_DELEGATION_BASE_DELEGATE_H__
diff --git a/ucl/inc/ucl/util/delegation/BaseDelegate.hpp b/ucl/inc/ucl/util/delegation/BaseDelegate.hpp
new file mode 100644
index 0000000..46cef7f
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/BaseDelegate.hpp
@@ -0,0 +1,74 @@
+namespace ucl {
+
+	template <class R, class ...ARGS, class DATA>
+	constexpr BaseDelegate<R(ARGS...), DATA>::BaseDelegate() noexcept :
+		m_data(nullptr),
+		m_stubA(nullptr)
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	constexpr BaseDelegate<R(ARGS...), DATA>::
+			BaseDelegate(nullptr_t) noexcept :
+		BaseDelegate()
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline BaseDelegate<R(ARGS...), DATA>::
+			BaseDelegate(const DATA &data, StubA stubA) noexcept :
+		m_data(data),
+		m_stubA(stubA)
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	template <class FUNC_SIG>
+	inline BaseDelegate<R(ARGS...), DATA>::
+			BaseDelegate(const BaseDelegate2<FUNC_SIG, DATA> &d) noexcept :
+		m_data(d.m_data),
+		m_stubA(d.m_stubA)
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	template <class FUNC_SIG>
+	inline BaseDelegate<R(ARGS...), DATA>::
+			BaseDelegate(BaseDelegate2<FUNC_SIG, DATA> &&d) noexcept :
+		m_data(std::move(d.m_data)),
+		m_stubA(d.m_stubA)
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline R BaseDelegate<R(ARGS...), DATA>::operator()(ARGS ...args) const
+	{
+		return m_stubA(
+				static_cast<void *>(m_data), std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline void BaseDelegate<R(ARGS...), DATA>::reset() noexcept
+	{
+		*this = {};
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline const DATA &BaseDelegate<R(ARGS...), DATA>::getData() const noexcept
+	{
+		return m_data;
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline typename BaseDelegate<R(ARGS...), DATA>::StubA
+			BaseDelegate<R(ARGS...), DATA>::getStubA() const noexcept
+	{
+		return m_stubA;
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline BaseDelegate<R(ARGS...), DATA>::operator bool() const noexcept
+	{
+		return !!m_data;
+	}
+}
diff --git a/ucl/inc/ucl/util/delegation/BaseDelegate2.h b/ucl/inc/ucl/util/delegation/BaseDelegate2.h
new file mode 100644
index 0000000..ad3242e
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/BaseDelegate2.h
@@ -0,0 +1,34 @@
+#ifndef __UCL_UTIL_DELEGATION_BASE_DELEGATE2_H__
+#define __UCL_UTIL_DELEGATION_BASE_DELEGATE2_H__
+
+#include "BaseDelegate.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG, class DATA>
+	class BaseDelegate2;
+
+	template <class R, class ...ARGS, class DATA>
+	class BaseDelegate2<R(ARGS...), DATA> :
+			public BaseDelegate<R(ARGS...), DATA> {
+	public:
+		using Cb = typename BaseDelegate2::Cb;
+		using StubA = typename Cb::StubA;
+		using StubB = typename Cb::StubB;
+
+	public:
+		using BaseDelegate<R(ARGS...), DATA>::BaseDelegate;
+
+		StubB getStubB() const noexcept;
+
+	protected:
+		BaseDelegate2(const DATA &data, StubA stubA, StubB stubB) noexcept;
+
+	private:
+		StubB m_stubB;
+	};
+}
+
+#include "BaseDelegate2.hpp"
+
+#endif // __UCL_UTIL_DELEGATION_BASE_DELEGATE2_H__
diff --git a/ucl/inc/ucl/util/delegation/BaseDelegate2.hpp b/ucl/inc/ucl/util/delegation/BaseDelegate2.hpp
new file mode 100644
index 0000000..28446de
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/BaseDelegate2.hpp
@@ -0,0 +1,17 @@
+namespace ucl {
+
+	template <class R, class ...ARGS, class DATA>
+	inline BaseDelegate2<R(ARGS...), DATA>::
+			BaseDelegate2(const DATA &data, StubA stubA, StubB stubB) noexcept :
+		BaseDelegate<R(ARGS...), DATA>(data, stubA),
+		m_stubB(stubB)
+	{
+	}
+
+	template <class R, class ...ARGS, class DATA>
+	inline typename BaseDelegate2<R(ARGS...), DATA>::StubB
+			BaseDelegate2<R(ARGS...), DATA>::getStubB() const noexcept
+	{
+		return m_stubB;
+	}
+}
diff --git a/ucl/inc/ucl/util/delegation/Callback.h b/ucl/inc/ucl/util/delegation/Callback.h
new file mode 100644
index 0000000..6b282d4
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Callback.h
@@ -0,0 +1,57 @@
+#ifndef __UCL_UTIL_DELEGATION_CALLBACK_H__
+#define __UCL_UTIL_DELEGATION_CALLBACK_H__
+
+#include "ucl/util/types/baseTypes.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG>
+	class Callback;
+
+	template <class R, class ...ARGS>
+	class Callback<R(ARGS...)> {
+	public:
+		using StubA = R(*)(void *, ARGS...);
+		using StubB = R(*)(ARGS..., void *);
+
+	public:
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+		static R stubA(void *data, ARGS ...args);
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+		static R stubB(ARGS ...args, void *data);
+
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+		static R stubA(void *data, ARGS ...args);
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+		static R stubB(ARGS ...args, void *data);
+
+		template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+		static R stubA2A(void *data, ARGS ...args);
+		template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+		static R stubB2A(ARGS ...args, void *data);
+
+		template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+		static R stubA2B(void *data, ARGS ...args);
+		template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+		static R stubB2B(ARGS ...args, void *data);
+
+		template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+		static R stubA2A(void *data, ARGS ...args);
+		template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+		static R stubB2A(ARGS ...args, void *data);
+
+		template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+		static R stubA2B(void *data, ARGS ...args);
+		template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+		static R stubB2B(ARGS ...args, void *data);
+
+		template <R(*FUNC)(ARGS...)>
+		static R stubA2V(void *data, ARGS ...args);
+		template <R(*FUNC)(ARGS...)>
+		static R stubB2V(ARGS ...args, void *data);
+	};
+}
+
+#include "Callback.hpp"
+
+#endif // __UCL_UTIL_DELEGATION_CALLBACK_H__
diff --git a/ucl/inc/ucl/util/delegation/Callback.hpp b/ucl/inc/ucl/util/delegation/Callback.hpp
new file mode 100644
index 0000000..622729f
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Callback.hpp
@@ -0,0 +1,104 @@
+namespace ucl {
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+	inline R Callback<R(ARGS...)>::stubA(void *data, ARGS ...args)
+	{
+		return (static_cast<CLASS *>(data)->*METHOD)(
+				std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+	inline R Callback<R(ARGS...)>::stubB(ARGS ...args, void *data)
+	{
+		return (static_cast<CLASS *>(data)->*METHOD)(
+				std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+	inline R Callback<R(ARGS...)>::stubA(void *data, ARGS ...args)
+	{
+		return (static_cast<const CLASS *>(data)->*METHOD)(
+				std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+	inline R Callback<R(ARGS...)>::stubB(ARGS ...args, void *data)
+	{
+		return (static_cast<const CLASS *>(data)->*METHOD)(
+				std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+	inline R Callback<R(ARGS...)>::stubA2A(void *data, ARGS ...args)
+	{
+		return FUNC(*static_cast<CLASS *>(data), std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+	inline R Callback<R(ARGS...)>::stubB2A(ARGS ...args, void *data)
+	{
+		return FUNC(*static_cast<CLASS *>(data), std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+	inline R Callback<R(ARGS...)>::stubA2B(void *data, ARGS ...args)
+	{
+		return FUNC(std::forward<ARGS>(args)..., *static_cast<CLASS *>(data));
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+	inline R Callback<R(ARGS...)>::stubB2B(ARGS ...args, void *data)
+	{
+		return FUNC(std::forward<ARGS>(args)..., *static_cast<CLASS *>(data));
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+	inline R Callback<R(ARGS...)>::stubA2A(void *data, ARGS ...args)
+	{
+		return FUNC(static_cast<HANDLE>(data), std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+	inline R Callback<R(ARGS...)>::stubB2A(ARGS ...args, void *data)
+	{
+		return FUNC(static_cast<HANDLE>(data), std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+	inline R Callback<R(ARGS...)>::stubA2B(void *data, ARGS ...args)
+	{
+		return FUNC(std::forward<ARGS>(args)..., static_cast<HANDLE>(data));
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+	inline R Callback<R(ARGS...)>::stubB2B(ARGS ...args, void *data)
+	{
+		return FUNC(std::forward<ARGS>(args)..., static_cast<HANDLE>(data));
+	}
+
+	template <class R, class ...ARGS>
+	template <R(*FUNC)(ARGS...)>
+	inline R Callback<R(ARGS...)>::stubA2V(void *data, ARGS ...args)
+	{
+		return FUNC(std::forward<ARGS>(args)...);
+	}
+
+	template <class R, class ...ARGS>
+	template <R(*FUNC)(ARGS...)>
+	inline R Callback<R(ARGS...)>::stubB2V(ARGS ...args, void *data)
+	{
+		return FUNC(std::forward<ARGS>(args)...);
+	}
+}
diff --git a/ucl/inc/ucl/util/delegation/Delegate.h b/ucl/inc/ucl/util/delegation/Delegate.h
new file mode 100644
index 0000000..214482c
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Delegate.h
@@ -0,0 +1,38 @@
+#ifndef __UCL_UTIL_DELEGATION_DELEGATE_H__
+#define __UCL_UTIL_DELEGATION_DELEGATE_H__
+
+#include "BaseDelegate.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG>
+	class Delegate;
+
+	template <class R, class ...ARGS>
+	class Delegate<R(ARGS...)> : public BaseDelegate<R(ARGS...), void *> {
+	public:
+		using BaseDelegate<R(ARGS...), void *>::BaseDelegate;
+
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+		static Delegate make(CLASS *data) noexcept;
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+		static Delegate make(const CLASS *data) noexcept;
+
+		template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+		static Delegate make(CLASS &data) noexcept;
+		template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+		static Delegate make(CLASS &data) noexcept;
+
+		template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+		static Delegate make(HANDLE data) noexcept;
+		template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+		static Delegate make(HANDLE data) noexcept;
+
+		template <R(*FUNC)(ARGS...)>
+		static Delegate make() noexcept;
+	};
+}
+
+#include "Delegate.hpp"
+
+#endif // __UCL_UTIL_DELEGATION_DELEGATE_H__
diff --git a/ucl/inc/ucl/util/delegation/Delegate.hpp b/ucl/inc/ucl/util/delegation/Delegate.hpp
new file mode 100644
index 0000000..adb595b
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Delegate.hpp
@@ -0,0 +1,64 @@
+namespace ucl {
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(CLASS *const data) noexcept
+	{
+		return {static_cast<void *>(data),
+				Delegate::Cb::template stubA<CLASS, METHOD>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(const CLASS *const data) noexcept
+	{
+		return {static_cast<void *>(const_cast<CLASS *>(data)),
+				Delegate::Cb::template stubA<CLASS, METHOD>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(CLASS &data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(&data)),
+				Delegate::Cb::template stubA2A<CLASS, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(CLASS &data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(&data)),
+				Delegate::Cb::template stubA2B<CLASS, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(const HANDLE data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(data)),
+				Delegate::Cb::template stubA2A<HANDLE, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make(const HANDLE data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(data)),
+				Delegate::Cb::template stubA2B<HANDLE, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <R(*FUNC)(ARGS...)>
+	inline Delegate<R(ARGS...)>
+			Delegate<R(ARGS...)>::make() noexcept
+	{
+		return {nullptr, Delegate::Cb::template stubA2V<FUNC>};
+	}
+}
diff --git a/ucl/inc/ucl/util/delegation/Delegate2.h b/ucl/inc/ucl/util/delegation/Delegate2.h
new file mode 100644
index 0000000..b780af7
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Delegate2.h
@@ -0,0 +1,38 @@
+#ifndef __UCL_UTIL_DELEGATION_DELEGATE2_H__
+#define __UCL_UTIL_DELEGATION_DELEGATE2_H__
+
+#include "BaseDelegate2.h"
+
+namespace ucl {
+
+	template <class FUNC_SIG>
+	class Delegate2;
+
+	template <class R, class ...ARGS>
+	class Delegate2<R(ARGS...)> : public BaseDelegate2<R(ARGS...), void *> {
+	public:
+		using BaseDelegate2<R(ARGS...), void *>::BaseDelegate2;
+
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+		static Delegate2 make(CLASS *data) noexcept;
+		template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+		static Delegate2 make(const CLASS *data) noexcept;
+
+		template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+		static Delegate2 make(CLASS &data) noexcept;
+		template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+		static Delegate2 make(CLASS &data) noexcept;
+
+		template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+		static Delegate2 make(HANDLE data) noexcept;
+		template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+		static Delegate2 make(HANDLE data) noexcept;
+
+		template <R(*FUNC)(ARGS...)>
+		static Delegate2 make() noexcept;
+	};
+}
+
+#include "Delegate2.hpp"
+
+#endif // __UCL_UTIL_DELEGATION_DELEGATE2_H__
diff --git a/ucl/inc/ucl/util/delegation/Delegate2.hpp b/ucl/inc/ucl/util/delegation/Delegate2.hpp
new file mode 100644
index 0000000..88246a3
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/Delegate2.hpp
@@ -0,0 +1,72 @@
+namespace ucl {
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(CLASS *const data) noexcept
+	{
+		return {static_cast<void *>(data),
+				Delegate2::Cb::template stubA<CLASS, METHOD>,
+				Delegate2::Cb::template stubB<CLASS, METHOD>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(CLASS::*METHOD)(ARGS...) const>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(const CLASS *const data) noexcept
+	{
+		return {static_cast<void *>(const_cast<CLASS *>(data)),
+				Delegate2::Cb::template stubA<CLASS, METHOD>,
+				Delegate2::Cb::template stubB<CLASS, METHOD>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(CLASS &, ARGS...)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(CLASS &data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(&data)),
+				Delegate2::Cb::template stubA2A<CLASS, FUNC>,
+				Delegate2::Cb::template stubB2A<CLASS, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class CLASS, R(*FUNC)(ARGS..., CLASS &)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(CLASS &data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(&data)),
+				Delegate2::Cb::template stubA2B<CLASS, FUNC>,
+				Delegate2::Cb::template stubB2B<CLASS, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(HANDLE, ARGS...)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(const HANDLE data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(data)),
+				Delegate2::Cb::template stubA2A<HANDLE, FUNC>,
+				Delegate2::Cb::template stubB2A<HANDLE, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <class HANDLE, R(*FUNC)(ARGS..., HANDLE)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make(const HANDLE data) noexcept
+	{
+		return {const_cast<void *>(static_cast<const void *>(data)),
+				Delegate2::Cb::template stubA2B<HANDLE, FUNC>,
+				Delegate2::Cb::template stubB2B<HANDLE, FUNC>};
+	}
+
+	template <class R, class ...ARGS>
+	template <R(*FUNC)(ARGS...)>
+	inline Delegate2<R(ARGS...)>
+			Delegate2<R(ARGS...)>::make() noexcept
+	{
+		return {nullptr,
+				Delegate2::Cb::template stubA2V<FUNC>,
+				Delegate2::Cb::template stubB2V<FUNC>};
+	}
+}
diff --git a/ucl/inc/ucl/util/delegation/helpers.h b/ucl/inc/ucl/util/delegation/helpers.h
new file mode 100644
index 0000000..fdcc566
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/helpers.h
@@ -0,0 +1,100 @@
+#ifndef __UCL_UTIL_DELEGATION_HELPERS_H__
+#define __UCL_UTIL_DELEGATION_HELPERS_H__
+
+namespace ucl {
+
+	// Automatic function signature detection for a specific type //
+
+	template <template <typename ...> class T, class TAG, class FUNC>
+	struct AutoFuncSig;
+
+	template <template <typename ...> class T,
+			 class R, class CLASS, class ...ARGS>
+	struct AutoFuncSig<T, void *, R(CLASS::*)(ARGS...)> {
+		using Data = CLASS;
+		using Type = T<R(ARGS...)>;
+	};
+
+	template <template <typename ...> class T,
+			class CLASS, class R, class ...ARGS>
+	struct AutoFuncSig<T, void *, R(CLASS::*)(ARGS...) const> {
+		using Data = CLASS;
+		using Type = T<R(ARGS...)>;
+	};
+
+	template <template <typename ...> class T,
+			class CLASS, class R, class ...ARGS>
+	struct AutoFuncSig<T, void *, R(*)(CLASS &, ARGS...)> {
+		using Data = CLASS;
+		using Type = T<R(ARGS...)>;
+	};
+
+	template <template <typename ...> class T,
+			class HANDLE, class R, class ...ARGS>
+	struct AutoFuncSig<T, void *, R(*)(HANDLE, ARGS...)> {
+		using Data = HANDLE;
+		using Type = T<R(ARGS...)>;
+	};
+
+	template <template <typename ...> class T,
+			class R, class ...ARGS>
+	struct AutoFuncSig<T, void, R(*)(ARGS...)> {
+		using Type = T<R(ARGS...)>;
+	};
+
+	// Relation operators //
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator==(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() == rhs.getStubA()) && (static_cast<void *>(
+				lhs.getData()) == static_cast<void *>(rhs.getData())));
+	}
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator!=(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() != rhs.getStubA()) || (static_cast<void *>(
+				lhs.getData()) != static_cast<void *>(rhs.getData())));
+	}
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator<(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() < rhs.getStubA()) ||
+				((lhs.getStubA() == rhs.getStubA()) && (static_cast<void *>(
+					lhs.getData()) < static_cast<void *>(rhs.getData()))));
+	}
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator<=(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() < rhs.getStubA()) ||
+				((lhs.getStubA() == rhs.getStubA()) && (static_cast<void *>(
+					lhs.getData()) <= static_cast<void *>(rhs.getData()))));
+	}
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator>(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() > rhs.getStubA()) ||
+				((lhs.getStubA() == rhs.getStubA()) && (static_cast<void *>(
+					lhs.getData()) > static_cast<void *>(rhs.getData()))));
+	}
+
+	template <class R, class ...ARGS, class DATA1, class DATA2>
+	inline bool operator>=(const BaseDelegate<R(ARGS...), DATA1> &lhs,
+			const BaseDelegate<R(ARGS...), DATA2> &rhs) noexcept
+	{
+		return ((lhs.getStubA() > rhs.getStubA()) ||
+				((lhs.getStubA() == rhs.getStubA()) && (static_cast<void *>(
+					lhs.getData()) >= static_cast<void *>(rhs.getData()))));
+	}
+}
+
+#endif // __UCL_UTIL_DELEGATION_HELPERS_H__
diff --git a/ucl/inc/ucl/util/delegation/macro.h b/ucl/inc/ucl/util/delegation/macro.h
new file mode 100644
index 0000000..d58bd57
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/macro.h
@@ -0,0 +1,45 @@
+#ifndef __UCL_UTIL_DELEGATION_MACRO_H__
+#define __UCL_UTIL_DELEGATION_MACRO_H__
+
+// Helper macro to simplify use of AutoFuncSig template
+
+#define _UCL_AFS(DELEGATE, FUNC) \
+		::ucl::AutoFuncSig<DELEGATE, void *, decltype(&FUNC)>
+
+// Helper macro to automatically generate different delegate objects //
+
+#define _UCL_DELEGATE(DELEGATE, FUNC, DATA) (_UCL_AFS(DELEGATE, FUNC):: \
+		Type::make<_UCL_AFS(DELEGATE, FUNC)::Data, &FUNC>(DATA))
+
+#define _UCL_DELEGATE_V(DELEGATE, FUNC) \
+		(::ucl::AutoFuncSig<DELEGATE, void, decltype(&FUNC)>::\
+			Type::make<&FUNC>())
+
+// Helper macro to automatically generate Delegate objects //
+
+#define UCL_DELEGATE(FUNC, DATA) _UCL_DELEGATE(::ucl::Delegate, FUNC, DATA)
+#define UCL_DELEGATE_V(FUNC) _UCL_DELEGATE_V(::ucl::Delegate, FUNC)
+
+// Helper macro to automatically generate Delegate2 objects //
+
+#define UCL_DELEGATE2(FUNC, DATA) _UCL_DELEGATE(::ucl::Delegate2, FUNC, DATA)
+#define UCL_DELEGATE2_V(FUNC) _UCL_DELEGATE_V(::ucl::Delegate2, FUNC)
+
+// Helper macro to automatically generate Callback stubs //
+
+#define UCL_CALLBACK_A(FUNC) (&_UCL_AFS(::ucl::Callback, FUNC):: \
+		Type::stubA<_UCL_AFS(::ucl::Callback, FUNC)::Data, &FUNC>)
+#define UCL_CALLBACK_B(FUNC) (&_UCL_AFS(::ucl::Callback, FUNC):: \
+		Type::stubB<_UCL_AFS(::ucl::Callback, FUNC)::Data, &FUNC>)
+
+#define UCL_CALLBACK_A2A(FUNC) (&_UCL_AFS(::ucl::Callback, FUNC)::Type:: \
+		stubA2A<_UCL_AFS(::ucl::Callback, FUNC)::Data, &FUNC>)
+#define UCL_CALLBACK_B2A(FUNC) (&_UCL_AFS(::ucl::Callback, FUNC)::Type:: \
+		stubB2A<_UCL_AFS(::ucl::Callback, FUNC)::Data, &FUNC>)
+
+#define UCL_CALLBACK_A2V(FUNC) (&::ucl::AutoFuncSig<::ucl::Callback, void, \
+		decltype(&FUNC)>::Type::stubA2V<&FUNC>)
+#define UCL_CALLBACK_B2V(FUNC) (&::ucl::AutoFuncSig<::ucl::Callback, void, \
+		decltype(&FUNC)>::Type::stubB2V<&FUNC>)
+
+#endif // __UCL_UTIL_DELEGATION_MACRO_H__
diff --git a/ucl/inc/ucl/util/delegation/shortMacro.h b/ucl/inc/ucl/util/delegation/shortMacro.h
new file mode 100644
index 0000000..ed0c806
--- /dev/null
+++ b/ucl/inc/ucl/util/delegation/shortMacro.h
@@ -0,0 +1,25 @@
+#ifndef __UCL_UTIL_DELEGATION_SHORT_MACRO_H__
+#define __UCL_UTIL_DELEGATION_SHORT_MACRO_H__
+
+// Helper macro to automatically generate Delegate objects //
+
+#define DELEGATE(FUNC, DATA)  UCL_DELEGATE(FUNC, DATA)
+#define DELEGATE_V(FUNC)      UCL_DELEGATE_V(FUNC)
+
+// Helper macro to automatically generate Delegate2 objects //
+
+#define DELEGATE2(FUNC, DATA)  UCL_DELEGATE2(FUNC, DATA)
+#define DELEGATE2_V(FUNC)      UCL_DELEGATE2_V(FUNC)
+
+// Helper macro to automatically generate Callback stubs //
+
+#define CALLBACK_A(FUNC)  UCL_CALLBACK_A(FUNC)
+#define CALLBACK_B(FUNC)  UCL_CALLBACK_B(FUNC)
+
+#define CALLBACK_A2A(FUNC)  UCL_CALLBACK_A2A(FUNC)
+#define CALLBACK_B2A(FUNC)  UCL_CALLBACK_B2A(FUNC)
+
+#define CALLBACK_A2V(FUNC)  UCL_CALLBACK_A2V(FUNC)
+#define CALLBACK_B2V(FUNC)  UCL_CALLBACK_B2V(FUNC)
+
+#endif // __UCL_UTIL_DELEGATION_SHORT_MACRO_H__
diff --git a/ucl/inc/ucl/util/helpers.h b/ucl/inc/ucl/util/helpers.h
new file mode 100644
index 0000000..c0ddccb
--- /dev/null
+++ b/ucl/inc/ucl/util/helpers.h
@@ -0,0 +1,90 @@
+#ifndef __UCL_UTIL_HELPERS_H__
+#define __UCL_UTIL_HELPERS_H__
+
+#include "types/baseTypes.h"
+
+namespace ucl {
+
+	constexpr Eina_Bool toEina(bool value);
+
+	// "nz()" - "Not Zero" functions
+	// return "zValue" if "!value" is true
+	constexpr const char *nz(const char *value, const char *zValue = "");
+
+	// "ne()" - "Not Empty" functions
+	// return "eValue" if "isEmpty(value)" is true
+	constexpr const char *ne(const char *value, const char *eValue = nullptr);
+
+	constexpr bool isEmpty(const char *value);
+
+	template <class T>
+	constexpr auto isEmpty(const T &value) -> decltype(value.empty())
+	{
+		return value.empty();
+	}
+
+	template <class T>
+	constexpr auto isEmpty(const T &value) -> decltype(value.isEmpty())
+	{
+		return value.isEmpty();
+	}
+
+	template <class T>
+	constexpr bool isNotEmpty(T &&value);
+
+	template <class T>
+	constexpr bool isNotValid(T &&value);
+
+	char *strDupSafe(const char *value);
+	int strCmpSafe(const char *lhs, const char *rhs);
+
+	template <class T1, class T2>
+	inline auto dynamicCast(T2 &&src) -> decltype(
+			dynamic_cast<T1>(std::forward<T2>(src)))
+	{
+		return dynamic_cast<T1>(std::forward<T2>(src));
+	}
+
+	template <class T1, class T2>
+	inline auto constCast(T2 &&src) -> decltype(
+			const_cast<T1>(std::forward<T2>(src)))
+	{
+		return const_cast<T1>(std::forward<T2>(src));
+	}
+
+	template <class T>
+	constexpr const T &min(const T &a, const T &b);
+
+	template <class T>
+	constexpr const T &max(const T &a, const T &b);
+
+	template <class T>
+	constexpr bool isPot(T value);
+
+	template <uint MULTIPLE, class T>
+	constexpr T ceilDiv(T value);
+
+	template <uint MULTIPLE, class T>
+	constexpr typename std::enable_if<isPot(MULTIPLE), T>::type
+			roundUp(T value)
+	{
+		return ((value + (MULTIPLE - 1)) & ~static_cast<T>(MULTIPLE - 1));
+	}
+
+	template <uint MULTIPLE, class T>
+	constexpr typename std::enable_if<!isPot(MULTIPLE), T>::type
+			roundUp(T value)
+	{
+		return (ceilDiv<MULTIPLE>(value) * MULTIPLE);
+	}
+}
+
+namespace ucl { namespace util {
+
+	template <class T>
+	std::unique_ptr<T> makeUnique(T *p);
+}}
+
+#include "helpers.hpp"
+
+#endif // __UCL_UTIL_HELPERS_H__
diff --git a/ucl/inc/ucl/util/helpers.hpp b/ucl/inc/ucl/util/helpers.hpp
new file mode 100644
index 0000000..bafaff2
--- /dev/null
+++ b/ucl/inc/ucl/util/helpers.hpp
@@ -0,0 +1,77 @@
+namespace ucl {
+
+	constexpr Eina_Bool toEina(const bool value)
+	{
+		return (value ? EINA_TRUE : EINA_FALSE);
+	}
+
+	constexpr const char *nz(const char *const value, const char *const zValue)
+	{
+		return (value ? value : zValue);
+	}
+
+	constexpr const char *ne(const char *const value, const char *const eValue)
+	{
+		return (isNotEmpty(value) ? value : eValue);
+	}
+
+	constexpr bool isEmpty(const char *const value)
+	{
+		return (!value || (value[0] == '\0'));
+	}
+
+	template <class T>
+	constexpr bool isNotEmpty(T &&value)
+	{
+		return !isEmpty(std::forward<T>(value));
+	}
+
+	template <class T>
+	constexpr bool isNotValid(T &&value)
+	{
+		return !isValid(std::forward<T>(value));
+	}
+
+	inline char *strDupSafe(const char *const value)
+	{
+		return (value ? strdup(value) : nullptr);
+	}
+
+	inline int strCmpSafe(const char *lhs, const char *rhs)
+	{
+		return strcmp(nz(lhs), nz(rhs));
+	}
+
+	template <class T>
+	constexpr const T &min(const T &a, const T &b)
+	{
+		return ((a < b) ? a : b);
+	}
+
+	template <class T>
+	constexpr const T &max(const T &a, const T &b)
+	{
+		return ((a > b) ? a : b);
+	}
+
+	template <class T>
+	constexpr bool isPot(const T value)
+	{
+		return (((value - 1) & value) == 0);
+	}
+
+	template <uint MULTIPLE, class T>
+	constexpr T ceilDiv(T value)
+	{
+		return ((value + (MULTIPLE - 1)) / MULTIPLE);
+	}
+}
+
+namespace ucl { namespace util {
+
+	template <class T>
+	inline std::unique_ptr<T> makeUnique(T *const p)
+	{
+		return std::unique_ptr<T>(p);
+	}
+}}
diff --git a/ucl/inc/ucl/util/logging.h b/ucl/inc/ucl/util/logging.h
new file mode 100644
index 0000000..6fb60f5
--- /dev/null
+++ b/ucl/inc/ucl/util/logging.h
@@ -0,0 +1,189 @@
+#ifndef __UCL_UTIL_LOGGING_H__
+#define __UCL_UTIL_LOGGING_H__
+
+#include <assert.h>
+
+#include <dlog.h>
+
+#include "types/Result.h"
+
+::ucl::ResultData getUCLResultData(::ucl::Result result);
+
+#ifndef UCL_LOG_LEVEL
+#define UCL_LOG_LEVEL UCL_MAX_LOG_LEVEL
+#elif UCL_LOG_LEVEL > UCL_MAX_LOG_LEVEL
+#undef UCL_LOG_LEVEL
+#define UCL_LOG_LEVEL UCL_MAX_LOG_LEVEL
+#endif
+
+#ifndef UCL_LOG_TAG
+#define UCL_LOG_TAG UCL_DEFAULT_LOG_TAG
+#endif
+
+#ifndef __MODULE__
+#define __MODULE__ (strrchr(__FILE__, '/') ? \
+		strrchr(__FILE__, '/') + 1 : __FILE__)
+#endif
+
+// Base macros for writing logs without result code
+#define UCL_ULOG(prio, fmt, ...) dlog_print( \
+	(log_priority)prio, UCL_LOG_TAG, "%s: %s(%d) > " fmt, \
+	__MODULE__, __func__, __LINE__, ##__VA_ARGS__)
+
+// Base macros for writing logs WITH result code
+#define UCL_URESDATALOG(prio, resdata, fmt, ...) dlog_print( \
+	(log_priority)prio, UCL_LOG_TAG, "%s: %s(%d) > " fmt " {%s}", \
+	__MODULE__, __func__, __LINE__, ##__VA_ARGS__, resdata.name)
+
+#define UCL_URESLOG(prio, result, fmt, ...) do { \
+	const ::ucl::ResultData &resdata = ::getUCLResultData(result); \
+	UCL_URESDATALOG(prio, resdata, fmt, ##__VA_ARGS__);} while (false)
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_VERBOSE
+#define UCL_VLOG(msg, ...) UCL_ULOG(DLOG_VERBOSE, msg, ##__VA_ARGS__)
+#define UCL_VRESLOG(result, msg, ...) \
+		UCL_URESLOG(DLOG_VERBOSE, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_VLOG(msg, ...) do {} while (false)
+#define UCL_VRESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_DEBUG
+#define UCL_DLOG(msg, ...) UCL_ULOG(DLOG_DEBUG, msg, ##__VA_ARGS__)
+#define UCL_DRESLOG(result, msg, ...) \
+		UCL_URESLOG(DLOG_DEBUG, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_DLOG(msg, ...) do {} while (false)
+#define UCL_DRESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_INFO
+#define UCL_ILOG(msg, ...) UCL_ULOG(DLOG_INFO, msg, ##__VA_ARGS__)
+#define UCL_IRESLOG(result, msg, ...) \
+		UCL_URESLOG(DLOG_INFO, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_ILOG(msg, ...) do {} while (false)
+#define UCL_IRESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_WARNING
+#define UCL_WLOG(msg, ...) UCL_ULOG(DLOG_WARN, msg, ##__VA_ARGS__)
+#define UCL_WRESLOG(result, msg, ...) \
+		UCL_URESLOG(DLOG_WARN, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_WLOG(msg, ...) do {} while (false)
+#define UCL_WRESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_ERROR
+#define UCL_ELOG(msg, ...) UCL_ULOG(DLOG_ERROR, msg, ##__VA_ARGS__)
+#define UCL_ERESLOG(result, msg, ...) \
+		UCL_URESLOG(DLOG_ERROR, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_ELOG(msg, ...) do {} while (false)
+#define UCL_ERESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_FATAL
+#define UCL_FLOG(msg, ...) UCL_ULOG(DLOG_FATAL, msg, ##__VA_ARGS__)
+#define UCL_FRESLOG(result, msg, ...) UCL_URESLOG( \
+	DLOG_FATAL, result, msg, ##__VA_ARGS__)
+#else
+#define UCL_FLOG(msg, ...) do {} while (false)
+#define UCL_FRESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#if UCL_LOG_LEVEL >= UCL_LOG_LEVEL_ERROR
+
+// Simple macros for writing logs WITH result
+// code and automatic log priority determination
+#define UCL_RESLOG(result, msg, ...) { \
+	const ::ucl::ResultData &resdata = ::getUCLResultData(result); \
+	UCL_URESDATALOG(resdata.logPrio, \
+			resdata, msg, ##__VA_ARGS__);} while (false)
+
+#else
+#define UCL_RESLOG(result, msg, ...) do {} while (false)
+#endif
+
+#define UCL_ASSERT(expr, msg, ...) \
+	do { \
+		if (!(expr)) { \
+			UCL_FLOG(msg, ##__VA_ARGS__); \
+			assert(false); \
+		} \
+	} while (false)
+
+#define UCL_FAIL_RETURN(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		if (isBad(__RESULT__)) { \
+			UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+			return __RESULT__; \
+		} \
+	} while (false)
+
+#define UCL_FAIL_RETURN_VALUE(result, value, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		if (isBad(__RESULT__)) { \
+			UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+			return (value); \
+		} \
+	} while (false)
+
+#define UCL_FAIL_RETURN_VOID(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		if (isBad(__RESULT__)) { \
+			UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+			return; \
+		} \
+	} while (false)
+
+#define UCL_LOG_RETURN(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+		return __RESULT__; \
+	} while (false)
+
+#define UCL_LOG_RETURN_VALUE(result, value, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+		return (value); \
+	} while (false)
+
+#define UCL_LOG_RETURN_VOID(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+		return; \
+	} while (false)
+
+#define UCL_FAIL_BREAK(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		if (isBad(__RESULT__)) { \
+			UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+			break; \
+		} \
+	} while (false)
+
+#define UCL_LOG_BREAK(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+		break; \
+	} while (false)
+
+#define UCL_FAIL_LOG(result, msg, ...) \
+	do { \
+		const ::ucl::Result __RESULT__ = (result); \
+		if (isBad(__RESULT__)) { \
+			UCL_RESLOG(__RESULT__, msg, ##__VA_ARGS__); \
+		} \
+	} while (false)
+
+#endif // __UCL_UTIL_LOGGING_H__
diff --git a/ucl/inc/ucl/util/memory.h b/ucl/inc/ucl/util/memory.h
new file mode 100644
index 0000000..edc74ce
--- /dev/null
+++ b/ucl/inc/ucl/util/memory.h
@@ -0,0 +1,14 @@
+#ifndef __UCL_UTIL_MEMORY_H__
+#define __UCL_UTIL_MEMORY_H__
+
+#include "memory/RefCountObjBase.h"
+#include "memory/RefCountObj.h"
+
+#include "memory/BaseRef.h"
+#include "memory/SharedRef.h"
+#include "memory/WeakRef.h"
+
+#include "memory/helpers.h"
+#include "memory/macro.h"
+
+#endif // __UCL_UTIL_MEMORY_H__
diff --git a/ucl/inc/ucl/util/memory/BaseRef.h b/ucl/inc/ucl/util/memory/BaseRef.h
new file mode 100644
index 0000000..bfae1fb
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/BaseRef.h
@@ -0,0 +1,42 @@
+#ifndef __UCL_UTIL_MEMORY_BASE_REF_H__
+#define __UCL_UTIL_MEMORY_BASE_REF_H__
+
+#include "RefCountObjBase.h"
+
+namespace ucl {
+
+	template <class T>
+	class BaseRef {
+	public:
+		using Type = T;
+
+		template <class U>
+		friend class BaseRef;
+		template <class U>
+		friend class SharedRef;
+		template <class U>
+		friend class WeakRef;
+
+	public:
+		T *operator->() const noexcept;
+		typename std::add_lvalue_reference<T>::type operator*() const noexcept;
+
+		template <class U>
+		explicit operator U() const noexcept;
+
+	protected:
+		constexpr BaseRef() noexcept;
+		BaseRef(RefCountObjBase *rc, T *ptr) noexcept;
+		BaseRef(BaseRef<T> &&r) noexcept;
+		template <class U>
+		BaseRef(BaseRef<U> &&r) noexcept;
+
+	protected:
+		RefCountObjBase *m_rc;
+		T *m_ptr;
+	};
+}
+
+#include "BaseRef.hpp"
+
+#endif // __UCL_UTIL_MEMORY_BASE_REF_H__
diff --git a/ucl/inc/ucl/util/memory/BaseRef.hpp b/ucl/inc/ucl/util/memory/BaseRef.hpp
new file mode 100644
index 0000000..047cc88
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/BaseRef.hpp
@@ -0,0 +1,56 @@
+namespace ucl {
+
+	template <class T>
+	constexpr BaseRef<T>::BaseRef() noexcept :
+		m_rc(nullptr),
+		m_ptr(nullptr)
+	{
+	}
+
+	template <class T>
+	inline BaseRef<T>::BaseRef(
+			RefCountObjBase *const rc, T *const ptr) noexcept :
+		m_rc(rc),
+		m_ptr(ptr)
+	{
+	}
+
+	template <class T>
+	inline BaseRef<T>::BaseRef(BaseRef<T> &&r) noexcept :
+		m_rc(r.m_rc),
+		m_ptr(r.m_ptr)
+	{
+		r.m_rc = nullptr;
+		r.m_ptr = nullptr;
+	}
+
+	template <class T>
+	template <class U>
+	inline BaseRef<T>::BaseRef(BaseRef<U> &&r) noexcept :
+		m_rc(r.m_rc),
+		m_ptr(r.m_ptr)
+	{
+		r.m_rc = nullptr;
+		r.m_ptr = nullptr;
+	}
+
+	template <class T>
+	inline T *BaseRef<T>::operator->() const noexcept
+	{
+		return m_ptr;
+	}
+
+	template <class T>
+	inline typename std::add_lvalue_reference<T>::type
+			BaseRef<T>::operator*() const noexcept
+	{
+		return *m_ptr;
+	}
+
+	template <class T>
+	template <class U>
+	inline BaseRef<T>::operator U() const noexcept
+	{
+		return static_cast<U>(m_ptr);
+	}
+}
diff --git a/ucl/inc/ucl/util/memory/RefCountObj.h b/ucl/inc/ucl/util/memory/RefCountObj.h
new file mode 100644
index 0000000..f067b0a
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/RefCountObj.h
@@ -0,0 +1,61 @@
+#ifndef __UCL_UTIL_MEMORY_REF_COUNT_OBJ_H__
+#define __UCL_UTIL_MEMORY_REF_COUNT_OBJ_H__
+
+#include "RefCountObjBase.h"
+
+namespace ucl {
+
+	template <class T>
+	class RefCountObj : public RefCountObjBase {
+	public:
+		template <class ...ARGS>
+		RefCountObj(ARGS &&...args);
+
+		T *getObj() noexcept;
+
+	protected:
+		// RefCountObjBase //
+		virtual void dispose() noexcept final override;
+		virtual void onUniqueChanged(bool isUnique) noexcept final override;
+
+	private:
+		// Consume-all SFINAE functions
+		template <class T2, class ...ARGS>
+		void createObj(const P<0> &, ARGS &&...args);
+		template <class T2>
+		void dispatchOnUniqueChanged(
+				const P<0> &, const bool isUnique) noexcept;
+
+		// Specialized SFINAE functions
+
+		template <class T2, class ...ARGS>
+		auto createObj(const P<1> &, ARGS &&...args) -> decltype(
+				(void)(new T2(this, std::forward<ARGS>(args)...)))
+		{
+			new (getObj()) T(this, std::forward<ARGS>(args)...);
+		}
+
+		template <class T2, class ...ARGS>
+		auto createObj(const P<2> &, ARGS &&...args) -> decltype(
+				(void)(new T2(*this, std::forward<ARGS>(args)...)))
+		{
+			new (getObj()) T(*this, std::forward<ARGS>(args)...);
+		}
+
+		template <class T2,
+				class = char(*)[T2::ENABLE_ON_UNIQUE_CHANGED_DISPATCH * 0 + 1]>
+		void dispatchOnUniqueChanged(
+				const P<1> &, const bool isUnique) noexcept
+		{
+			getObj()->onUniqueChanged(isUnique);
+		}
+
+	private:
+		// Proper-aligned storage for T
+		typename std::aligned_storage<sizeof(T), alignof(T)>::type m_obj;
+	};
+}
+
+#include "RefCountObj.hpp"
+
+#endif // __UCL_UTIL_MEMORY_REF_COUNT_OBJ_H__
diff --git a/ucl/inc/ucl/util/memory/RefCountObj.hpp b/ucl/inc/ucl/util/memory/RefCountObj.hpp
new file mode 100644
index 0000000..d0cfa2a
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/RefCountObj.hpp
@@ -0,0 +1,44 @@
+namespace ucl {
+
+	template <class T>
+	template <class ...ARGS>
+	inline RefCountObj<T>::RefCountObj(ARGS &&...args)
+	{
+		createObj<T>(P<2>(), std::forward<ARGS>(args)...);
+	}
+
+	template <class T>
+	inline T *RefCountObj<T>::getObj() noexcept
+	{
+		return static_cast<T *>(static_cast<void *>(&m_obj));
+	}
+
+	template <class T>
+	inline void RefCountObj<T>::dispose() noexcept
+	{
+		if (!isDisposed()) {
+			RefCountObjBase::dispose();
+			getObj()->~T();
+		}
+	}
+
+	template <class T>
+	inline void RefCountObj<T>::onUniqueChanged(const bool isUnique) noexcept
+	{
+		dispatchOnUniqueChanged<T>(P<1>(), isUnique);
+	}
+
+	template <class T>
+	template <class T2, class ...ARGS>
+	inline void RefCountObj<T>::createObj(const P<0> &, ARGS &&...args)
+	{
+		new (getObj()) T(std::forward<ARGS>(args)...);
+	}
+
+	template <class T>
+	template <class T2>
+	inline void RefCountObj<T>::dispatchOnUniqueChanged(
+			const P<0> &, const bool isUnique) noexcept
+	{
+	}
+}
diff --git a/ucl/inc/ucl/util/memory/RefCountObjBase.h b/ucl/inc/ucl/util/memory/RefCountObjBase.h
new file mode 100644
index 0000000..b5e4277
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/RefCountObjBase.h
@@ -0,0 +1,34 @@
+#ifndef __UCL_UTIL_MEMORY_REF_COUNT_OBJ_BASE_H__
+#define __UCL_UTIL_MEMORY_REF_COUNT_OBJ_BASE_H__
+
+#include "ucl/util/types/classTypes.h"
+
+namespace ucl {
+
+	class RefCountObjBase : public Polymorphic {
+	public:
+		void ref() noexcept;
+		void unref() noexcept;
+
+		void refWeak() noexcept;
+		void unrefWeak() noexcept;
+
+		bool isDisposed() const noexcept;
+
+	protected:
+		RefCountObjBase();
+		virtual ~RefCountObjBase() = default;
+
+		virtual void dispose() noexcept;
+		virtual void onUniqueChanged(bool isUnique) noexcept = 0;
+
+	private:
+		int m_useRefs;
+		int m_weakRefs;
+		bool m_isDisposed;
+	};
+}
+
+#include "RefCountObjBase.hpp"
+
+#endif // __UCL_UTIL_MEMORY_REF_COUNT_OBJ_BASE_H__
diff --git a/ucl/inc/ucl/util/memory/RefCountObjBase.hpp b/ucl/inc/ucl/util/memory/RefCountObjBase.hpp
new file mode 100644
index 0000000..4edfa52
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/RefCountObjBase.hpp
@@ -0,0 +1,53 @@
+namespace ucl {
+
+	inline RefCountObjBase::RefCountObjBase() :
+		m_useRefs(0),
+		m_weakRefs(1),
+		m_isDisposed(false)
+	{
+	}
+
+	inline void RefCountObjBase::ref() noexcept
+	{
+		++m_useRefs;
+		if (m_useRefs == 2) {
+			onUniqueChanged(false);
+		}
+	}
+
+	inline void RefCountObjBase::unref() noexcept
+	{
+		--m_useRefs;
+		if (m_useRefs <= 1) {
+			if (m_useRefs == 1) {
+				onUniqueChanged(true);
+			} else {
+				dispose();
+				unrefWeak();
+			}
+		}
+	}
+
+	inline void RefCountObjBase::refWeak() noexcept
+	{
+		++m_weakRefs;
+	}
+
+	inline void RefCountObjBase::unrefWeak() noexcept
+	{
+		--m_weakRefs;
+		if (m_weakRefs == 0) {
+			delete this;
+		}
+	}
+
+	inline bool RefCountObjBase::isDisposed() const noexcept
+	{
+		return m_isDisposed;
+	}
+
+	inline void RefCountObjBase::dispose() noexcept
+	{
+		m_isDisposed = true;
+	}
+}
diff --git a/ucl/inc/ucl/util/memory/SharedRef.h b/ucl/inc/ucl/util/memory/SharedRef.h
new file mode 100644
index 0000000..15b0d49
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/SharedRef.h
@@ -0,0 +1,66 @@
+#ifndef __UCL_UTIL_MEMORY_SHARED_REF_H__
+#define __UCL_UTIL_MEMORY_SHARED_REF_H__
+
+#include "BaseRef.h"
+
+namespace ucl {
+
+	template <class T>
+	class SharedRef : public BaseRef<T> {
+	public:
+		template <class U>
+		friend void swap(SharedRef<U> &x, SharedRef<U> &y) noexcept;
+
+		template <class T2, class U>
+		friend SharedRef<T2> staticRefCast(const SharedRef<U> &r) noexcept;
+		template <class T2, class U>
+		friend SharedRef<T2> dynamicRefCast(const SharedRef<U> &r) noexcept;
+
+	public:
+		constexpr SharedRef() noexcept;
+		constexpr SharedRef(nullptr_t) noexcept;
+
+		SharedRef(RefCountObjBase *rc, T *ptr) noexcept;
+
+		SharedRef(const SharedRef<T> &r) noexcept;
+		template <class U>
+		SharedRef(const BaseRef<U> &r) noexcept;
+
+		SharedRef(SharedRef<T> &&r) noexcept;
+		template <class U>
+		SharedRef(SharedRef<U> &&r) noexcept;
+
+		~SharedRef();
+
+		SharedRef<T> &operator=(SharedRef<T> r) noexcept;
+
+		void reset() noexcept;
+
+		T *get() const noexcept;
+		operator bool() const noexcept;
+
+		template <class U, class = typename std::enable_if<
+			std::is_convertible<T *, U *>::value && (
+				std::is_same<typename std::remove_cv<U>::type, void>::value ||
+				std::is_same<typename std::remove_cv<U>::type,
+					typename std::remove_cv<T>::type>::value)>::type>
+		operator const SharedRef<U> &() const noexcept
+		{
+			return reinterpret_cast<const SharedRef<U> &>(*this);
+		}
+	};
+
+	// Non-member functions //
+
+	template <class T, class ...ARGS>
+	SharedRef<T> makeShared(ARGS &&...args);
+
+	template <class T, class U>
+	const SharedRef<T> &constRefCast(const SharedRef<U> &r) noexcept;
+	template <class T, class U>
+	SharedRef<T> &&constRefCast(SharedRef<U> &&r) noexcept;
+}
+
+#include "SharedRef.hpp"
+
+#endif // __UCL_UTIL_MEMORY_SHARED_REF_H__
diff --git a/ucl/inc/ucl/util/memory/SharedRef.hpp b/ucl/inc/ucl/util/memory/SharedRef.hpp
new file mode 100644
index 0000000..29d8ad2
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/SharedRef.hpp
@@ -0,0 +1,133 @@
+#include "RefCountObj.h"
+
+namespace ucl {
+
+	template <class T>
+	constexpr SharedRef<T>::SharedRef() noexcept
+	{
+	}
+
+	template <class T>
+	constexpr SharedRef<T>::SharedRef(nullptr_t) noexcept
+	{
+	}
+
+	template <class T>
+	inline SharedRef<T>::SharedRef(
+			RefCountObjBase *const rc, T *const ptr) noexcept :
+		BaseRef<T>(rc, ptr)
+	{
+		this->m_rc->ref();
+	}
+
+	template <class T>
+	inline SharedRef<T>::SharedRef(const SharedRef<T> &r) noexcept :
+		BaseRef<T>(r.m_rc, r.m_ptr)
+	{
+		if (this->m_rc) {
+			this->m_rc->ref();
+		}
+	}
+
+	template <class T>
+	template <class U>
+	inline SharedRef<T>::SharedRef(const BaseRef<U> &r) noexcept :
+		BaseRef<T>(r.m_rc, r.m_ptr)
+	{
+		if (this->m_rc) {
+			this->m_rc->ref();
+		}
+	}
+
+	template <class T>
+	inline SharedRef<T>::SharedRef(SharedRef<T> &&r) noexcept :
+		BaseRef<T>(std::move(r))
+	{
+	}
+
+	template <class T>
+	template <class U>
+	inline SharedRef<T>::SharedRef(SharedRef<U> &&r) noexcept :
+		BaseRef<T>(std::move(r))
+	{
+	}
+
+	template <class T>
+	inline SharedRef<T>::~SharedRef()
+	{
+		if (this->m_rc) {
+			this->m_rc->unref();
+		}
+	}
+
+	template <class T>
+	inline SharedRef<T> &SharedRef<T>::operator=(SharedRef<T> r) noexcept
+	{
+		swap(*this, r);
+		return *this;
+	}
+
+	template <class T>
+	inline void SharedRef<T>::reset() noexcept
+	{
+		*this = {};
+	}
+
+	template <class T>
+	inline T *SharedRef<T>::get() const noexcept
+	{
+		return this->m_ptr;
+	}
+
+	template <class T>
+	inline SharedRef<T>::operator bool() const noexcept
+	{
+		return !!this->m_ptr;
+	}
+
+	// Non-member functions //
+
+	template <class T, class ...ARGS>
+	SharedRef<T> makeShared(ARGS &&...args)
+	{
+		const auto rc = new RefCountObj<T>(std::forward<ARGS>(args)...);
+		return {rc, rc->getObj()};
+	}
+
+	template <class T>
+	inline void swap(SharedRef<T> &x, SharedRef<T> &y) noexcept
+	{
+		std::swap(x.m_rc, y.m_rc);
+		std::swap(x.m_ptr, y.m_ptr);
+	}
+
+	template <class T, class U>
+	inline SharedRef<T> staticRefCast(const SharedRef<U> &r) noexcept
+	{
+		return {r.m_rc, static_cast<T *>(r.get())};
+	}
+
+	template <class T, class U>
+	inline SharedRef<T> dynamicRefCast(const SharedRef<U> &r) noexcept
+	{
+		const auto ptr = dynamic_cast<T *>(r.get());
+		if (!ptr) {
+			return {};
+		}
+		return {r.m_rc, ptr};
+	}
+
+	template <class T, class U>
+	inline const SharedRef<T> &constRefCast(const SharedRef<U> &r) noexcept
+	{
+		(void)const_cast<T *>((U *)nullptr);
+		return reinterpret_cast<const SharedRef<T> &>(r);
+	}
+
+	template <class T, class U>
+	inline SharedRef<T> &&constRefCast(SharedRef<U> &&r) noexcept
+	{
+		(void)const_cast<T *>((U *)nullptr);
+		return reinterpret_cast<SharedRef<T> &&>(r);
+	}
+}
diff --git a/ucl/inc/ucl/util/memory/WeakRef.h b/ucl/inc/ucl/util/memory/WeakRef.h
new file mode 100644
index 0000000..a755f2a
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/WeakRef.h
@@ -0,0 +1,66 @@
+#ifndef __UCL_UTIL_MEMORY_WEAK_REF_H__
+#define __UCL_UTIL_MEMORY_WEAK_REF_H__
+
+#include "SharedRef.h"
+
+namespace ucl {
+
+	template <class T>
+	class WeakRef : public BaseRef<T> {
+	public:
+		template <class U>
+		friend void swap(WeakRef<U> &x, WeakRef<U> &y) noexcept;
+
+		template <class T2, class U>
+		friend WeakRef<T2> staticRefCast(const WeakRef<U> &r) noexcept;
+		template <class T2, class U>
+		friend WeakRef<T2> dynamicRefCast(const WeakRef<U> &r) noexcept;
+
+	public:
+		constexpr WeakRef() noexcept;
+		constexpr WeakRef(nullptr_t) noexcept;
+
+		WeakRef(RefCountObjBase *rc, T *ptr) noexcept;
+
+		WeakRef(const WeakRef<T> &r) noexcept;
+		template <class U>
+		WeakRef(const BaseRef<U> &r) noexcept;
+
+		WeakRef(WeakRef<T> &&r) noexcept;
+		template <class U>
+		WeakRef(WeakRef<U> &&r) noexcept;
+
+		~WeakRef();
+
+		WeakRef<T> &operator=(WeakRef<T> r) noexcept;
+
+		void reset() noexcept;
+
+		T *get() const noexcept;
+		operator bool() const noexcept;
+
+		template <class U, class = typename std::enable_if<
+			std::is_convertible<T *, U *>::value && (
+				std::is_same<typename std::remove_cv<U>::type, void>::value ||
+				std::is_same<typename std::remove_cv<U>::type,
+					typename std::remove_cv<T>::type>::value)>::type>
+		operator const WeakRef<U> &() const noexcept
+		{
+			return reinterpret_cast<const WeakRef<U> &>(*this);
+		}
+	};
+
+	// Non-member functions //
+
+	template <class T>
+	WeakRef<T> makeWeak(const SharedRef<T> &r) noexcept;
+
+	template <class T, class U>
+	const WeakRef<T> &constRefCast(const WeakRef<U> &r) noexcept;
+	template <class T, class U>
+	WeakRef<T> &&constRefCast(WeakRef<U> &&r) noexcept;
+}
+
+#include "WeakRef.hpp"
+
+#endif // __UCL_UTIL_MEMORY_WEAK_REF_H__
diff --git a/ucl/inc/ucl/util/memory/WeakRef.hpp b/ucl/inc/ucl/util/memory/WeakRef.hpp
new file mode 100644
index 0000000..3fcee28
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/WeakRef.hpp
@@ -0,0 +1,130 @@
+namespace ucl {
+
+	template <class T>
+	constexpr WeakRef<T>::WeakRef() noexcept
+	{
+	}
+
+	template <class T>
+	constexpr WeakRef<T>::WeakRef(nullptr_t) noexcept
+	{
+	}
+
+	template <class T>
+	inline WeakRef<T>::WeakRef(
+			RefCountObjBase *const rc, T *const ptr) noexcept :
+		BaseRef<T>(rc, ptr)
+	{
+		this->m_rc->refWeak();
+	}
+
+	template <class T>
+	inline WeakRef<T>::WeakRef(const WeakRef<T> &r) noexcept :
+		BaseRef<T>(r.m_rc, r.m_ptr)
+	{
+		if (this->m_rc) {
+			this->m_rc->refWeak();
+		}
+	}
+
+	template <class T>
+	template <class U>
+	inline WeakRef<T>::WeakRef(const BaseRef<U> &r) noexcept :
+		BaseRef<T>(r.m_rc, r.m_ptr)
+	{
+		if (this->m_rc) {
+			this->m_rc->refWeak();
+		}
+	}
+
+	template <class T>
+	inline WeakRef<T>::WeakRef(WeakRef<T> &&r) noexcept :
+		BaseRef<T>(std::move(r))
+	{
+	}
+
+	template <class T>
+	template <class U>
+	inline WeakRef<T>::WeakRef(WeakRef<U> &&r) noexcept :
+		BaseRef<T>(std::move(r))
+	{
+	}
+
+	template <class T>
+	inline WeakRef<T>::~WeakRef()
+	{
+		if (this->m_rc) {
+			this->m_rc->unrefWeak();
+		}
+	}
+
+	template <class T>
+	inline WeakRef<T> &WeakRef<T>::operator=(WeakRef<T> r) noexcept
+	{
+		swap(*this, r);
+		return *this;
+	}
+
+	template <class T>
+	inline void WeakRef<T>::reset() noexcept
+	{
+		*this = {};
+	}
+
+	template <class T>
+	inline T *WeakRef<T>::get() const noexcept
+	{
+		return (operator bool() ? this->m_ptr : nullptr);
+	}
+
+	template <class T>
+	inline WeakRef<T>::operator bool() const noexcept
+	{
+		return (this->m_ptr && !this->m_rc->isDisposed());
+	}
+
+	// Non-member functions //
+
+	template <class T>
+	inline WeakRef<T> makeWeak(const SharedRef<T> &r) noexcept
+	{
+		return r;
+	}
+
+	template <class T>
+	inline void swap(WeakRef<T> &x, WeakRef<T> &y) noexcept
+	{
+		std::swap(x.m_rc, y.m_rc);
+		std::swap(x.m_ptr, y.m_ptr);
+	}
+
+	template <class T, class U>
+	inline WeakRef<T> staticRefCast(const WeakRef<U> &r) noexcept
+	{
+		return {r.m_rc, static_cast<T *>(r.get())};
+	}
+
+	template <class T, class U>
+	inline WeakRef<T> dynamicRefCast(const WeakRef<U> &r) noexcept
+	{
+		const auto ptr = dynamic_cast<T *>(r.get());
+		if (!ptr) {
+			return {};
+		}
+		return {r.m_rc, ptr};
+	}
+
+	template <class T, class U>
+	inline const WeakRef<T> &constRefCast(const WeakRef<U> &r) noexcept
+	{
+		(void)const_cast<T *>((U *)nullptr);
+		return reinterpret_cast<const WeakRef<T> &>(r);
+	}
+
+	template <class T, class U>
+	inline WeakRef<T> &&constRefCast(WeakRef<U> &&r) noexcept
+	{
+		(void)const_cast<T *>((U *)nullptr);
+		return reinterpret_cast<WeakRef<T> &&>(r);
+	}
+}
diff --git a/ucl/inc/ucl/util/memory/helpers.h b/ucl/inc/ucl/util/memory/helpers.h
new file mode 100644
index 0000000..96921b1
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/helpers.h
@@ -0,0 +1,101 @@
+#ifndef __UCL_UTIL_MEMORY_HELPERS_H__
+#define __UCL_UTIL_MEMORY_HELPERS_H__
+
+namespace ucl {
+
+	// Generic casting functions //
+
+	template <class T, class U>
+	inline auto dynamicCast(const U &src) noexcept -> decltype(
+			dynamicRefCast<typename T::Type>(src))
+	{
+		return dynamicRefCast<typename T::Type>(src);
+	}
+
+	template <class T, class U>
+	inline auto constCast(U &&src) noexcept -> decltype(
+			constRefCast<typename T::Type>(std::forward<U>(src)))
+	{
+		return constRefCast<typename T::Type>(std::forward<U>(src));
+	}
+
+	// Relation operators //
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator==(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() == rhs.get());
+	}
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator!=(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() != rhs.get());
+	}
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator<(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() < rhs.get());
+	}
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator<=(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() <= rhs.get());
+	}
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator>(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() > rhs.get());
+	}
+
+	template <class T, class U, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value &&
+		std::is_base_of<BaseRef<typename U::Type>, U>::value>::type>
+	inline bool operator>=(const T &lhs, const U &rhs) noexcept
+	{
+		return (lhs.get() >= rhs.get());
+	}
+
+	template <class T, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value>::type>
+	inline bool operator==(const T &lhs, nullptr_t rhs) noexcept
+	{
+		return !lhs;
+	}
+
+	template <class T, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value>::type>
+	bool operator==(nullptr_t lhs, const T &rhs) noexcept
+	{
+		return !rhs;
+	}
+
+	template <class T, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value>::type>
+	bool operator!=(const T &lhs, nullptr_t rhs) noexcept
+	{
+		return lhs;
+	}
+
+	template <class T, class = typename std::enable_if<
+		std::is_base_of<BaseRef<typename T::Type>, T>::value>::type>
+	bool operator!=(nullptr_t lhs, const T &rhs) noexcept
+	{
+		return rhs;
+	}
+}
+
+#endif // __UCL_UTIL_MEMORY_HELPERS_H__
diff --git a/ucl/inc/ucl/util/memory/macro.h b/ucl/inc/ucl/util/memory/macro.h
new file mode 100644
index 0000000..a273096
--- /dev/null
+++ b/ucl/inc/ucl/util/memory/macro.h
@@ -0,0 +1,11 @@
+#ifndef __UCL_UTIL_MEMORY_MACRO_H__
+#define __UCL_UTIL_MEMORY_MACRO_H__
+
+#define UCL_DECLARE_REF_ALIASES(CLASS_NAME) \
+		class CLASS_NAME; \
+		using CLASS_NAME##SRef = ::ucl::SharedRef<CLASS_NAME>; \
+		using CLASS_NAME##WRef = ::ucl::WeakRef<CLASS_NAME>; \
+		using CLASS_NAME##SCRef = ::ucl::SharedRef<const CLASS_NAME>; \
+		using CLASS_NAME##WCRef = ::ucl::WeakRef<const CLASS_NAME>
+
+#endif // __UCL_UTIL_MEMORY_MACRO_H__
diff --git a/ucl/inc/ucl/util/shortLogs.h b/ucl/inc/ucl/util/shortLogs.h
new file mode 100644
index 0000000..0e1edd4
--- /dev/null
+++ b/ucl/inc/ucl/util/shortLogs.h
@@ -0,0 +1,69 @@
+#ifndef __UCL_UTIL_SHORT_LOGS_H__
+#define __UCL_UTIL_SHORT_LOGS_H__
+
+#undef ULOG
+#undef URESDATALOG
+#undef URESLOG
+
+#undef VLOG
+#undef DLOG
+#undef ILOG
+#undef WLOG
+#undef ELOG
+#undef FLOG
+
+#undef VRESLOG
+#undef DRESLOG
+#undef IRESLOG
+#undef WRESLOG
+#undef ERESLOG
+#undef FRESLOG
+
+#undef RESLOG
+
+#undef RETVM_IF
+#undef RETM_IF
+
+#undef FAIL_RETURN
+#undef FAIL_RETURN_VALUE
+#undef FAIL_RETURN_VOID
+#undef FAIL_BREAK
+#undef FAIL_LOG
+
+#undef LOG_RETURN
+#undef LOG_RETURN_VALUE
+#undef LOG_RETURN_VOID
+#undef LOG_BREAK
+
+#define ULOG         UCL_ULOG
+#define URESDATALOG  UCL_URESDATALOG
+#define URESLOG      UCL_URESLOG
+
+#define VLOG  UCL_VLOG
+#define DLOG  UCL_DLOG
+#define ILOG  UCL_ILOG
+#define WLOG  UCL_WLOG
+#define ELOG  UCL_ELOG
+#define FLOG  UCL_FLOG
+
+#define VRESLOG  UCL_VRESLOG
+#define DRESLOG  UCL_DRESLOG
+#define IRESLOG  UCL_IRESLOG
+#define WRESLOG  UCL_WRESLOG
+#define ERESLOG  UCL_ERESLOG
+#define FRESLOG  UCL_FRESLOG
+
+#define RESLOG  UCL_RESLOG
+
+#define FAIL_RETURN        UCL_FAIL_RETURN
+#define FAIL_RETURN_VALUE  UCL_FAIL_RETURN_VALUE
+#define FAIL_RETURN_VOID   UCL_FAIL_RETURN_VOID
+#define FAIL_BREAK         UCL_FAIL_BREAK
+#define FAIL_LOG           UCL_FAIL_LOG
+
+#define LOG_RETURN        UCL_LOG_RETURN
+#define LOG_RETURN_VALUE  UCL_LOG_RETURN_VALUE
+#define LOG_RETURN_VOID   UCL_LOG_RETURN_VOID
+#define LOG_BREAK         UCL_LOG_BREAK
+
+#endif // __UCL_UTIL_SHORT_LOGS_H__
diff --git a/ucl/inc/ucl/util/threading.h b/ucl/inc/ucl/util/threading.h
new file mode 100644
index 0000000..f8724f2
--- /dev/null
+++ b/ucl/inc/ucl/util/threading.h
@@ -0,0 +1,9 @@
+#ifndef __UCL_UTIL_THREADING_H__
+#define __UCL_UTIL_THREADING_H__
+
+#include "threading/Thread.h"
+#include "threading/Mutex.h"
+#include "threading/MutexLock.h"
+#include "threading/CondVar.h"
+
+#endif // __UCL_UTIL_THREADING_H__
diff --git a/ucl/inc/ucl/util/threading/CondVar.h b/ucl/inc/ucl/util/threading/CondVar.h
new file mode 100644
index 0000000..dc7c94d
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/CondVar.h
@@ -0,0 +1,23 @@
+#ifndef __UCL_UTIL_THREADING_COND_VAR_H__
+#define __UCL_UTIL_THREADING_COND_VAR_H__
+
+#include "MutexLock.h"
+
+namespace ucl {
+
+	class CondVar : public NonCopyable {
+	public:
+		CondVar();
+		~CondVar();
+		void wait(MutexLock &lock);
+		void notify();
+		void notifyAll();
+		pthread_cond_t *getHandle();
+	private:
+		pthread_cond_t m_cond;
+	};
+}
+
+#include "CondVar.hpp"
+
+#endif // __UCL_UTIL_THREADING_COND_VAR_H__
diff --git a/ucl/inc/ucl/util/threading/CondVar.hpp b/ucl/inc/ucl/util/threading/CondVar.hpp
new file mode 100644
index 0000000..eb7be06
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/CondVar.hpp
@@ -0,0 +1,33 @@
+namespace ucl {
+
+	inline CondVar::CondVar() :
+		m_cond()
+	{
+		pthread_cond_init(&m_cond, NULL);
+	}
+
+	inline CondVar::~CondVar()
+	{
+		pthread_cond_destroy(&m_cond);
+	}
+
+	inline void CondVar::wait(MutexLock &lock)
+	{
+		pthread_cond_wait(&m_cond, lock.getMutex().getHandle());
+	}
+
+	inline void CondVar::notify()
+	{
+		pthread_cond_signal(&m_cond);
+	}
+
+	inline void CondVar::notifyAll()
+	{
+		pthread_cond_broadcast(&m_cond);
+	}
+
+	inline pthread_cond_t *CondVar::getHandle()
+	{
+		return &m_cond;
+	}
+}
diff --git a/ucl/inc/ucl/util/threading/Mutex.h b/ucl/inc/ucl/util/threading/Mutex.h
new file mode 100644
index 0000000..8e53e0a
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/Mutex.h
@@ -0,0 +1,26 @@
+#ifndef __UCL_UTIL_THREADING_MUTEX_H__
+#define __UCL_UTIL_THREADING_MUTEX_H__
+
+// Use pthread because Tizen 3.0 officially not support C++ 11
+// And there were problems with threading in C++ 11 and Tizen 3.0
+#include <pthread.h>
+
+#include "ucl/util/types/classTypes.h"
+
+namespace ucl {
+
+	class Mutex : public NonCopyable {
+	public:
+		Mutex();
+		~Mutex();
+		void lock();
+		void unlock();
+		pthread_mutex_t *getHandle();
+	private:
+		pthread_mutex_t m_mutex;
+	};
+}
+
+#include "Mutex.hpp"
+
+#endif // __UCL_UTIL_THREADING_MUTEX_H__
diff --git a/ucl/inc/ucl/util/threading/Mutex.hpp b/ucl/inc/ucl/util/threading/Mutex.hpp
new file mode 100644
index 0000000..71e5baa
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/Mutex.hpp
@@ -0,0 +1,28 @@
+namespace ucl {
+
+	inline Mutex::Mutex() :
+		m_mutex()
+	{
+		pthread_mutex_init(&m_mutex, NULL);
+	}
+
+	inline Mutex::~Mutex()
+	{
+		pthread_mutex_destroy(&m_mutex);
+	}
+
+	inline void Mutex::lock()
+	{
+		pthread_mutex_lock(&m_mutex);
+	}
+
+	inline void Mutex::unlock()
+	{
+		pthread_mutex_unlock(&m_mutex);
+	}
+
+	inline pthread_mutex_t *Mutex::getHandle()
+	{
+		return &m_mutex;
+	}
+}
diff --git a/ucl/inc/ucl/util/threading/MutexLock.h b/ucl/inc/ucl/util/threading/MutexLock.h
new file mode 100644
index 0000000..a982b0c
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/MutexLock.h
@@ -0,0 +1,20 @@
+#ifndef __UCL_UTIL_THREADING_MUTEX_LOCK_H__
+#define __UCL_UTIL_THREADING_MUTEX_LOCK_H__
+
+#include "Mutex.h"
+
+namespace ucl {
+
+	class MutexLock : public NonCopyable {
+	public:
+		MutexLock(Mutex &mutex);
+		~MutexLock();
+		Mutex &getMutex();
+	private:
+		Mutex &m_mutex;
+	};
+}
+
+#include "MutexLock.hpp"
+
+#endif // __UCL_UTIL_THREADING_MUTEX_LOCK_H__
diff --git a/ucl/inc/ucl/util/threading/MutexLock.hpp b/ucl/inc/ucl/util/threading/MutexLock.hpp
new file mode 100644
index 0000000..251978e
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/MutexLock.hpp
@@ -0,0 +1,18 @@
+namespace ucl {
+
+	inline MutexLock::MutexLock(Mutex &mutex) :
+		m_mutex(mutex)
+	{
+		mutex.lock();
+	}
+
+	inline MutexLock::~MutexLock()
+	{
+		m_mutex.unlock();
+	}
+
+	inline Mutex &MutexLock::getMutex()
+	{
+		return m_mutex;
+	}
+}
diff --git a/ucl/inc/ucl/util/threading/Thread.h b/ucl/inc/ucl/util/threading/Thread.h
new file mode 100644
index 0000000..52bef4b
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/Thread.h
@@ -0,0 +1,32 @@
+#ifndef __UCL_UTIL_THREADING_THREAD_H__
+#define __UCL_UTIL_THREADING_THREAD_H__
+
+// Use pthread because Tizen 3.0 officially not support C++ 11
+// And there were problems with threading in C++ 11 and Tizen 3.0
+#include <pthread.h>
+
+#include "ucl/util/types/classTypes.h"
+
+namespace ucl {
+
+	class Thread : public NonCopyable {
+	public:
+		explicit Thread(bool createSuspended = false);
+		virtual ~Thread();
+		bool wasStarted() const;
+		bool wasJoinded() const;
+		bool start();
+		void join();
+		pthread_t *getHandle();
+	protected:
+		virtual void execute() = 0;
+	private:
+		pthread_t m_thread;
+		bool m_wasStarted;
+		bool m_wasJoined;
+	};
+}
+
+#include "Thread.hpp"
+
+#endif // __UCL_UTIL_THREADING_THREAD_H__
diff --git a/ucl/inc/ucl/util/threading/Thread.hpp b/ucl/inc/ucl/util/threading/Thread.hpp
new file mode 100644
index 0000000..2027f44
--- /dev/null
+++ b/ucl/inc/ucl/util/threading/Thread.hpp
@@ -0,0 +1,71 @@
+#include "ucl/util/logging.h"
+
+namespace ucl {
+
+	inline Thread::Thread(bool createSuspended) :
+		m_thread(),
+		m_wasStarted(false),
+		m_wasJoined(false)
+	{
+		if (!createSuspended) {
+			start();
+		}
+	}
+
+	inline Thread::~Thread()
+	{
+		if (!m_wasJoined) {
+			join();
+		}
+	}
+
+	inline bool Thread::wasStarted() const
+	{
+		return m_wasStarted;
+	}
+
+	inline bool Thread::wasJoinded() const
+	{
+		return m_wasJoined;
+	}
+
+	inline bool Thread::start()
+	{
+		if (m_wasStarted) {
+			UCL_WLOG("Already started!");
+			return false;
+		}
+		const int res = pthread_create(&m_thread, NULL,
+			[](void *data) -> void *
+			{
+				static_cast<Thread *>(data)->execute();
+				return nullptr;
+			},
+			this);
+		if (res != 0) {
+			UCL_ELOG("pthread_create() failed: %d", res);
+			return false;
+		}
+		m_wasStarted = true;
+		return true;
+	}
+
+	inline void Thread::join()
+	{
+		if (!m_wasStarted) {
+			UCL_WLOG("Not stared started!");
+			return;
+		}
+		if (m_wasJoined) {
+			UCL_WLOG("Already joined!");
+			return;
+		}
+		m_wasJoined = true;
+		pthread_join(m_thread, NULL);
+	}
+
+	inline pthread_t *Thread::getHandle()
+	{
+		return ((m_wasStarted && !m_wasJoined) ? &m_thread : NULL);
+	}
+}
diff --git a/ucl/inc/ucl/util/types.h b/ucl/inc/ucl/util/types.h
new file mode 100644
index 0000000..e20ca41
--- /dev/null
+++ b/ucl/inc/ucl/util/types.h
@@ -0,0 +1,8 @@
+#ifndef __UCL_UTIL_TYPES_H__
+#define __UCL_UTIL_TYPES_H__
+
+#include "types/baseTypes.h"
+#include "types/classTypes.h"
+#include "types/Result.h"
+
+#endif // __UCL_UTIL_TYPES_H__
diff --git a/ucl/inc/ucl/util/types/Result.h b/ucl/inc/ucl/util/types/Result.h
new file mode 100644
index 0000000..8f83301
--- /dev/null
+++ b/ucl/inc/ucl/util/types/Result.h
@@ -0,0 +1,59 @@
+#ifndef __UCL_UTIL_TYPES_RESULT_H__
+#define __UCL_UTIL_TYPES_RESULT_H__
+
+#include "baseTypes.h"
+
+namespace ucl {
+
+	// ResultData declaration //
+
+	struct ResultData {
+		const char *name;
+		int logPrio;
+	};
+
+	// Result declaration //
+
+	struct Result {
+		int value;
+
+		Result() = default;
+
+		template <class VALUE, class = char(*)[VALUE::_UCL_RESULT * 0 + 1]>
+		constexpr Result(const VALUE &v) : value(v) {}
+	};
+
+	// Result non-member functions //
+
+	const ResultData &getResultData(Result result);
+
+	constexpr bool isGood(Result result);
+	constexpr bool isBad(Result result);
+
+	constexpr bool operator==(Result lhs, Result rhs);
+	constexpr bool operator!=(Result lhs, Result rhs);
+
+	// Basic Result values //
+
+	enum {
+		_UCL_RESULT,
+
+		RES_OK    = 0,
+		RES_FALSE = 1,
+		_RES_END,
+
+		RES_FAIL              = -1,
+		RES_INVALID_ARGUMENTS = -2,
+		RES_ILLEGAL_STATE     = -3,
+		RES_OUT_OF_MEMORY     = -4,
+		RES_IO_ERROR          = -5,
+		RES_NOT_SUPPORTED     = -6,
+		RES_INVALID_DATA      = -7,
+		// TODO MUST match previous item!
+		_RES_BEGIN            = RES_INVALID_DATA
+	};
+}
+
+#include "Result.hpp"
+
+#endif // __UCL_UTIL_TYPES_RESULT_H__
diff --git a/ucl/inc/ucl/util/types/Result.hpp b/ucl/inc/ucl/util/types/Result.hpp
new file mode 100644
index 0000000..9c3fd38
--- /dev/null
+++ b/ucl/inc/ucl/util/types/Result.hpp
@@ -0,0 +1,22 @@
+namespace ucl {
+
+	constexpr bool isGood(const Result result)
+	{
+		return (result.value >= RES_OK);
+	}
+
+	constexpr bool isBad(const Result result)
+	{
+		return !isGood(result);
+	}
+
+	constexpr bool operator==(const Result lhs, const Result rhs)
+	{
+		return (lhs.value == rhs.value);
+	}
+
+	constexpr bool operator!=(const Result lhs, const Result rhs)
+	{
+		return (lhs.value != rhs.value);
+	}
+}
diff --git a/ucl/inc/ucl/util/types/baseTypes.h b/ucl/inc/ucl/util/types/baseTypes.h
new file mode 100644
index 0000000..50bcfba
--- /dev/null
+++ b/ucl/inc/ucl/util/types/baseTypes.h
@@ -0,0 +1,21 @@
+#ifndef __UCL_UTIL_TYPES_BASE_TYPES_H__
+#define __UCL_UTIL_TYPES_BASE_TYPES_H__
+
+#include <cstddef>
+#include <cstdlib>
+#include <cstdint>
+
+#include <string>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include <Eina.h>
+
+#include "ucl/config.h"
+
+namespace ucl {
+	using UInt = unsigned int;
+}
+
+#endif // __UCL_UTIL_TYPES_BASE_TYPES_H__
diff --git a/ucl/inc/ucl/util/types/classTypes.h b/ucl/inc/ucl/util/types/classTypes.h
new file mode 100644
index 0000000..d264084
--- /dev/null
+++ b/ucl/inc/ucl/util/types/classTypes.h
@@ -0,0 +1,58 @@
+#ifndef __UCL_UTIL_TYPES_CLASS_TYPES_H__
+#define __UCL_UTIL_TYPES_CLASS_TYPES_H__
+
+#include "baseTypes.h"
+
+namespace ucl {
+
+	class NonCopyable {
+	public:
+		NonCopyable(const NonCopyable &) = delete;
+		NonCopyable &operator=(const NonCopyable &) = delete;
+	protected:
+		NonCopyable() = default;
+		~NonCopyable() = default;
+	};
+
+	class Polymorphic : public NonCopyable {
+	protected:
+		Polymorphic() = default;
+		virtual ~Polymorphic() = default;
+	};
+
+	class IDisposable : public Polymorphic {
+	public:
+		virtual void dispose() = 0;
+	protected:
+		virtual ~IDisposable() = default;
+	};
+
+	template <class IPRODUCT>
+	class IFactory : public Polymorphic {
+	public:
+		using IProduct = IPRODUCT;
+	public:
+		virtual IPRODUCT *newInstance() const = 0;
+	protected:
+		~IFactory() = default;
+	};
+
+	template <class PRODUCT, class IPRODUCT>
+	class Factory : public IFactory<IPRODUCT> {
+	public:
+		using Product = PRODUCT;
+	public:
+		virtual IPRODUCT *newInstance() const final override
+		{
+			return new PRODUCT();
+		}
+	};
+
+	// Priority selector for SFINAE functions
+	template <int N>
+	struct P : P<N - 1> {};
+	template <>
+	struct P<0> {};
+}
+
+#endif // __UCL_UTIL_TYPES_CLASS_TYPES_H__
diff --git a/ucl/src/appfw/InstanceManagerBase.cpp b/ucl/src/appfw/InstanceManagerBase.cpp
new file mode 100644
index 0000000..8929394
--- /dev/null
+++ b/ucl/src/appfw/InstanceManagerBase.cpp
@@ -0,0 +1,31 @@
+#include "ucl/appfw/InstanceManagerBase.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	InstanceManagerBase::InstanceManagerBase(AppParams appParams) :
+		m_appParams(std::move(appParams))
+	{
+	}
+
+	InstanceManagerBase::~InstanceManagerBase()
+	{
+	}
+
+	const AppParams &InstanceManagerBase::getAppParams() const
+	{
+		return m_appParams;
+	}
+
+	void InstanceManagerBase::setSysEventProvider(SysEventProviderUPtr provider)
+	{
+		m_sysEventProvider = std::move(provider);
+	}
+
+	SysEventProvider &InstanceManagerBase::getSysEventProvider() const
+	{
+		UCL_ASSERT(m_sysEventProvider, "m_sysEventProvider is NULL!");
+		return *m_sysEventProvider;
+	}
+}
diff --git a/ucl/src/appfw/SysEventProvider.cpp b/ucl/src/appfw/SysEventProvider.cpp
new file mode 100644
index 0000000..459bdb1
--- /dev/null
+++ b/ucl/src/appfw/SysEventProvider.cpp
@@ -0,0 +1,97 @@
+#include "ucl/appfw/SysEventProvider.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	// SysEventProvider::EventProxy //
+
+	class SysEventProvider::EventProxy : public NonCopyable {
+	public:
+		EventProxy(SysEventProvider &provider,
+				const SysEvent sysEvent,
+				const app_event_type_e appEvent):
+			m_provider(provider),
+			m_sysEvent(sysEvent)
+		{
+			const int res = m_provider.addEventHandler(&m_eventHandler,
+					appEvent, CALLBACK_B(EventProxy::onAppEvent), this);
+			if (res != APP_ERROR_NONE) {
+				if (res != APP_ERROR_INVALID_PARAMETER) {
+					ELOG("addEventHandler() failed! %d", res);
+				}
+				m_eventHandler = nullptr;
+			}
+		}
+
+		~EventProxy()
+		{
+			if (m_eventHandler) {
+				const int res = m_provider.delEventHandler(m_eventHandler);
+				if (res != APP_ERROR_NONE) {
+					WLOG("delEventHandler() failed! %d", res);
+				}
+			}
+		}
+
+	private:
+		void onAppEvent(app_event_info_h event)
+		{
+			m_provider.dispatch(m_sysEvent);
+		}
+
+	private:
+		SysEventProvider &m_provider;
+		app_event_handler_h m_eventHandler;
+		SysEvent m_sysEvent;
+	};
+
+	// SysEventProvider //
+
+	SysEventProvider::SysEventProvider(EventHandlerAddFunc addFunc,
+			EventHandlerDelFunc delFunc):
+		m_addFunc(addFunc),
+		m_delFunc(delFunc)
+	{
+		m_eventProxies.emplace_back(*this, SysEvent::LANGUAGE_CHANGED,
+				APP_EVENT_LANGUAGE_CHANGED);
+
+		m_eventProxies.emplace_back(*this, SysEvent::REGION_FMT_CHANGED,
+				APP_EVENT_REGION_FORMAT_CHANGED);
+
+		m_eventProxies.emplace_back(*this, SysEvent::LOW_MEMORY,
+				APP_EVENT_LOW_MEMORY);
+
+		m_eventProxies.emplace_back(*this, SysEvent::LOW_BATTERY,
+				APP_EVENT_LOW_BATTERY);
+
+		m_eventProxies.emplace_back(*this, SysEvent::ORIENTATION_CHANGED,
+				APP_EVENT_DEVICE_ORIENTATION_CHANGED);
+
+		m_eventProxies.emplace_back(*this, SysEvent::SUSPEND_STATE_CHANGED,
+				APP_EVENT_SUSPENDED_STATE_CHANGED);
+
+		m_eventProxies.emplace_back(*this, SysEvent::UPDATE_REQUESTED,
+				APP_EVENT_UPDATE_REQUESTED);
+	}
+
+	SysEventProvider::~SysEventProvider()
+	{
+	}
+
+	int SysEventProvider::addEventHandler(app_event_handler_h *handler,
+			app_event_type_e appEvent, app_event_cb cb, void *data)
+	{
+		return m_addFunc(handler, appEvent, cb, data);
+	}
+
+	int SysEventProvider::delEventHandler(app_event_handler_h handler)
+	{
+		return m_delFunc(handler);
+	}
+
+	void SysEventProvider::dispatch(SysEvent sysEvent)
+	{
+		m_event.invoke(sysEvent);
+	}
+}
diff --git a/ucl/src/appfw/UIApp.cpp b/ucl/src/appfw/UIApp.cpp
new file mode 100644
index 0000000..c33a34e
--- /dev/null
+++ b/ucl/src/appfw/UIApp.cpp
@@ -0,0 +1,178 @@
+#include "ucl/appfw/UIApp.h"
+
+#include <app.h>
+
+#include "ucl/appfw/IInstanceAppControlExt.h"
+#include "../common.h"
+
+namespace ucl {
+
+	UIApp::UIApp(InstanceManagerBase &instanceMgr) :
+		m_instanceMgr(instanceMgr)
+	{
+	}
+
+	UIApp::~UIApp()
+	{
+	}
+
+	int UIApp::run(int argc, char *argv[])
+	{
+		ui_app_lifecycle_callback_s alcc = {};
+		alcc.create = CALLBACK_B(UIApp::onCreate);
+		alcc.terminate = CALLBACK_B(UIApp::onTerminate);
+		alcc.pause = CALLBACK_B(UIApp::onPause);
+		alcc.resume = CALLBACK_B(UIApp::onResume);
+		alcc.app_control = CALLBACK_B(UIApp::onAppControl);
+
+		const int ret = ui_app_main(argc, argv, &alcc, this);
+		if (ret != APP_ERROR_NONE) {
+			LOG_RETURN_VALUE(RES_FAIL, ret, "ui_app_main() failed! %d", ret);
+		}
+
+		return 0;
+	}
+
+	AppType UIApp::getAppType() const
+	{
+		return AppType::UI;
+	}
+
+	WindowSRef UIApp::getWindow()
+	{
+		return m_window;
+	}
+
+	void UIApp::exitApp()
+	{
+		ui_app_exit();
+	}
+
+	bool UIApp::onCreate()
+	{
+		FAIL_RETURN_VALUE(configParams(), false, "configParams() failed!");
+
+		FAIL_RETURN_VALUE(createWindow(), false, "createWindow() failed!");
+
+		initSysEventManager();
+
+		FAIL_RETURN_VALUE(createInstance(), false, "createInstance() failed!");
+
+		return true;
+	}
+
+	void UIApp::onTerminate()
+	{
+		m_instance.reset();
+		m_instanceMgr.setSysEventProvider(nullptr);
+		m_window.reset();
+	}
+
+	void UIApp::onPause()
+	{
+		if (m_instance) {
+			m_instance->onPause();
+		}
+	}
+
+	void UIApp::onResume()
+	{
+		if (m_instance) {
+			m_instance->onResume();
+		}
+	}
+
+	void UIApp::onAppControl(app_control_h appControl)
+	{
+		auto instance = dynamic_cast<
+				IInstanceAppControlExt *>(m_instance.get());
+		if (instance) {
+			instance->onAppControl(appControl);
+		}
+	}
+
+	Result UIApp::configParams()
+	{
+		auto &&appParams = m_instanceMgr.getAppParams();
+
+		Variant paramValue;
+
+		if (appParams.get(AppParam::BASE_SCALE, paramValue)) {
+			const double baseScale = paramValue.asDouble();
+			if (baseScale <= 0.0) {
+				LOG_RETURN(RES_INVALID_DATA,
+						"Invalid parameter BASE_SCALE: %f", baseScale);
+			}
+			elm_app_base_scale_set(baseScale);
+		}
+
+		if (appParams.get(AppParam::ACCELERATION_PREFERENECE, paramValue)) {
+			const char *const accelPreference = paramValue.asString();
+			if (isEmpty(accelPreference)) {
+				LOG_RETURN(RES_INVALID_DATA,
+						"Invalid parameter ACCELERATION_PREFERENECE: %s",
+						accelPreference);
+			}
+			elm_config_accel_preference_set(accelPreference);
+		}
+
+		return RES_OK;
+	}
+
+	Result UIApp::createWindow()
+	{
+		auto &&appParams = m_instanceMgr.getAppParams();
+
+		Variant paramValue;
+
+		auto winType = Window::Type::BASIC;
+		if (appParams.get(AppParam::WINDOW_TYPE, paramValue)) {
+			winType = static_cast<Window::Type>(paramValue.asInt());
+			if (isNotValid(winType)) {
+				LOG_RETURN(RES_INVALID_DATA,
+						"Invalid parameter WINDOW_TYPE: %d", winType);
+			}
+		}
+
+		paramValue = appParams.get(AppParam::WINDOW_NAME);
+		if (isEmpty(paramValue)) {
+			LOG_RETURN(RES_INVALID_DATA, "WINDOW_NAME must not be empty!");
+		}
+
+		m_window = Window::Builder().
+				setType(winType).
+				setName({paramValue.asString()}).
+				setIsOwner(true).
+				build();
+		if (!m_window) {
+			LOG_RETURN(RES_FAIL, "Window::Builder().build() Failed!");
+		}
+
+		return RES_OK;
+	}
+
+	void UIApp::initSysEventManager()
+	{
+		m_instanceMgr.setSysEventProvider(
+				util::makeUnique(new SysEventProvider(
+					&ui_app_add_event_handler,
+					&ui_app_remove_event_handler)));
+	}
+
+	Result UIApp::createInstance()
+	{
+		auto instance = util::makeUnique(m_instanceMgr.newInstance());
+		if (!instance) {
+			LOG_RETURN(RES_FAIL, "m_instanceMgr.newInstance() failed!");
+		}
+
+		const auto res = instance->onCreate(this);
+		if (isBad(res)) {
+			LOG_RETURN(res, "instance->onCreate() failed!");
+		}
+
+		m_instance = std::move(instance);
+
+		return RES_OK;
+	}
+}
diff --git a/ucl/src/common.h b/ucl/src/common.h
new file mode 100644
index 0000000..24857a2
--- /dev/null
+++ b/ucl/src/common.h
@@ -0,0 +1,19 @@
+#ifndef __UCL_COMMON_H__
+#define __UCL_COMMON_H__
+
+#include <cmath>
+#include <cstring>
+
+#include <algorithm>
+
+#include <Ecore.h>
+
+#include "ucl/util/types.h"
+#include "ucl/util/helpers.h"
+#include "ucl/util/logging.h"
+#include "ucl/util/shortLogs.h"
+
+#include "ucl/util/delegation/shortMacro.h"
+#include "ucl/misc/smartDelegation/shortMacro.h"
+
+#endif // __UCL_COMMON_H__
diff --git a/ucl/src/gui/EdjeWidget.cpp b/ucl/src/gui/EdjeWidget.cpp
new file mode 100644
index 0000000..0ca9c0c
--- /dev/null
+++ b/ucl/src/gui/EdjeWidget.cpp
@@ -0,0 +1,37 @@
+#include "ucl/gui/EdjeWidget.h"
+
+namespace ucl {
+
+	void EdjeWidget::setText(const TString &value)
+	{
+		if (value.isTranslatable()) {
+			if (value.hasDomain()) {
+				elm_object_domain_translatable_text_set(
+						getEo(), value.getDomain(), value);
+			} else {
+				elm_object_translatable_text_set(getEo(), value);
+			}
+		} else {
+			elm_object_domain_text_translatable_set(getEo(),
+					nullptr, EINA_FALSE);
+			elm_object_text_set(getEo(), value);
+		}
+	}
+
+	void EdjeWidget::setPartText(const EdjePart part, const TString &value)
+	{
+		if (value.isTranslatable()) {
+			if (value.hasDomain()) {
+				elm_object_domain_translatable_part_text_set(
+						getEo(), part.name, value.getDomain(), value);
+			} else {
+				elm_object_translatable_part_text_set(
+						getEo(), part.name, value);
+			}
+		} else {
+			elm_object_part_text_translatable_set(getEo(),
+					part.name, EINA_FALSE);
+			elm_object_part_text_set(getEo(), part.name, value);
+		}
+	}
+}
diff --git a/ucl/src/gui/ElmWidget.cpp b/ucl/src/gui/ElmWidget.cpp
new file mode 100644
index 0000000..68ee5af
--- /dev/null
+++ b/ucl/src/gui/ElmWidget.cpp
@@ -0,0 +1,14 @@
+#include "ucl/gui/ElmWidget.h"
+
+namespace ucl {
+
+	void ElmWidget::setFocusedImpl(const bool value)
+	{
+		elm_object_focus_set(getEo(), toEina(value));
+	}
+
+	bool ElmWidget::isFocusedImpl() const
+	{
+		return elm_object_focus_get(getEo());
+	}
+}
diff --git a/ucl/src/gui/Layout.cpp b/ucl/src/gui/Layout.cpp
new file mode 100644
index 0000000..bd43c37
--- /dev/null
+++ b/ucl/src/gui/Layout.cpp
@@ -0,0 +1,35 @@
+#include "ucl/gui/Layout.h"
+
+#include "ucl/gui/stdTheme/layout.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	// Layout::Builder //
+
+	LayoutSRef Layout::Builder::build(Widget &parent) const
+	{
+		Evas_Object *const eo = elm_layout_add(parent);
+		if (!eo) {
+			ELOG("elm_layout_add() failed!");
+			return {};
+		}
+
+		auto result = makeShared<Layout>(eo, m_isOwner);
+
+		if (m_needBindToEo) {
+			result->bindToEo();
+		}
+
+		if (isNotEmpty(m_edjeFilePath) && isValid(m_edjeGroup)) {
+			result->setEdjeFile(m_edjeFilePath, m_edjeGroup);
+		} else {
+			result->setTheme(isValid(m_theme) ? m_theme : LAYOUT_DEFAULT);
+		}
+
+		show(*result);
+
+		return result;
+	}
+}
diff --git a/ucl/src/gui/Naviframe.cpp b/ucl/src/gui/Naviframe.cpp
new file mode 100644
index 0000000..d7d2776
--- /dev/null
+++ b/ucl/src/gui/Naviframe.cpp
@@ -0,0 +1,31 @@
+#include "ucl/gui/Naviframe.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	// Naviframe::Builder //
+
+	NaviframeSRef Naviframe::Builder::build(Widget &parent) const
+	{
+		Evas_Object *const eo = elm_naviframe_add(parent);
+		if (!eo) {
+			ELOG("elm_naviframe_add() failed!");
+			return {};
+		}
+
+		auto result = makeShared<Naviframe>(eo, m_isOwner);
+
+		if (m_needBindToEo) {
+			result->bindToEo();
+		}
+
+		if (isValid(m_style)) {
+			result->setStyle(m_style);
+		}
+
+		show(*result);
+
+		return result;
+	}
+}
diff --git a/ucl/src/gui/Widget.cpp b/ucl/src/gui/Widget.cpp
new file mode 100644
index 0000000..d8f519f
--- /dev/null
+++ b/ucl/src/gui/Widget.cpp
@@ -0,0 +1,281 @@
+#include "ucl/gui/Widget.h"
+
+#include "../common.h"
+
+namespace ucl { namespace { namespace impl {
+
+	constexpr auto WIDGET_EVENT_SMART = EVAS_CALLBACK_LAST;
+}}}
+
+namespace ucl {
+
+	// Widget::EventProxy //
+
+	class Widget::EventProxy : public NonCopyable {
+	public:
+		EventProxy(Widget &widget, const WidgetEvent event,
+				const WidgetEventHandler handler) :
+			m_widget(widget),
+			m_handler(handler),
+			m_type(static_cast<Evas_Callback_Type>(event))
+		{
+			evas_object_event_callback_add(m_widget.getEo(),
+					m_type, event_cb, this);
+		}
+
+		EventProxy(Widget &widget, const SmartEvent event,
+				const WidgetEventHandler handler) :
+			m_widget(widget),
+			m_smartEvent(event),
+			m_handler(handler),
+			m_type(impl::WIDGET_EVENT_SMART)
+		{
+			evas_object_smart_callback_add(m_widget.getEo(),
+					m_smartEvent.c_str(), smart_cb, this);
+		}
+
+		~EventProxy()
+		{
+			if (m_type == impl::WIDGET_EVENT_SMART) {
+				evas_object_smart_callback_del_full(m_widget.getEo(),
+						m_smartEvent.c_str(), smart_cb, this);
+			} else {
+				evas_object_event_callback_del_full(m_widget.getEo(),
+						m_type, event_cb, this);
+			}
+		}
+
+		void setSelfIt(const Widget::EventProxiesIt it)
+		{
+			m_selfIt = it;
+		}
+
+		bool operator==(const std::pair<WidgetEvent, WidgetEventHandler> &rhs)
+		{
+			return ((m_type == static_cast<Evas_Callback_Type>(rhs.first)) &&
+					(m_handler == rhs.second));
+		}
+
+		bool operator==(const std::pair<SmartEvent, WidgetEventHandler> &rhs)
+		{
+			return ((m_type == impl::WIDGET_EVENT_SMART) &&
+					(m_handler == rhs.second) &&
+					(m_smartEvent.compare(rhs.first) == 0));
+		}
+
+	private:
+		static void event_cb(void *data, Evas *e,
+				Evas_Object *obj, void *event_info)
+		{
+			static_cast<EventProxy *>(data)->dispatchEvent(event_info);
+		}
+
+		static void smart_cb(void *data, Evas_Object *obj, void *event_info)
+		{
+			static_cast<EventProxy *>(data)->dispatchEvent(event_info);
+		}
+
+		void dispatchEvent(void *const event_info)
+		{
+			if (m_handler) {
+				m_handler(m_widget, event_info);
+			} else {
+				m_widget.delEventProxy(m_selfIt);
+			}
+		}
+
+	private:
+		Widget &m_widget;
+		const std::string m_smartEvent;
+		const WidgetEventHandler m_handler;
+		const Evas_Callback_Type m_type;
+		Widget::EventProxiesIt m_selfIt;
+	};
+
+	// Widget //
+
+	Widget::Widget(RefCountObjBase *const rc, Evas_Object *const eo,
+			const bool isOwner) :
+		SharedObject(rc),
+		m_eo(eo),
+		m_isOwner(isOwner),
+		m_isBoundToEo(false),
+		m_isEoRefKept(false),
+		m_isSelfRefKept(false),
+		m_isSelfRefUnique(false)
+	{
+		UCL_ASSERT(m_eo, "m_eo is NULL!");
+
+		if (m_rc) {
+			evas_object_event_callback_priority_add(m_eo, EVAS_CALLBACK_FREE,
+					EO_CALLBACK_PRIORITY_AFTER,
+					CALLBACK_A(Widget::onEoFree), this);
+		}
+
+		updateRefs();
+	}
+
+	Widget::~Widget()
+	{
+		m_eventProxies.clear();
+
+		if (m_isBoundToEo) {
+			unbindFromEo();
+		}
+
+		if (m_rc) {
+			evas_object_event_callback_del_full(m_eo, EVAS_CALLBACK_FREE,
+					CALLBACK_A(Widget::onEoFree), this);
+		}
+
+		if (m_isOwner) {
+			evas_object_del(m_eo);
+		}
+
+		if (m_isEoRefKept) {
+			evas_object_unref(m_eo);
+		}
+	}
+
+	void Widget::bindToEo()
+	{
+		if (!evas_object_data_get(m_eo, impl::WIDGET_DATA_NAME)) {
+			evas_object_data_set(m_eo, impl::WIDGET_DATA_NAME, this);
+			m_isBoundToEo = true;
+		} else {
+			WLOG("Other Widget is already bound to this Eo!");
+		}
+	}
+
+	void Widget::unbindFromEo()
+	{
+		if (evas_object_data_get(m_eo, impl::WIDGET_DATA_NAME) == this) {
+			evas_object_data_del(m_eo, impl::WIDGET_DATA_NAME);
+			m_isBoundToEo = false;
+		} else {
+			WLOG("Widget does not bound to its Eo!");
+		}
+	}
+
+	void Widget::updateRefs()
+	{
+		const auto rc = m_rc;
+
+		updateEoRef();
+
+		if (rc && !rc->isDisposed()) {
+			updateSelfRef();
+		}
+	}
+
+	void Widget::updateEoRef()
+	{
+		if (needKeepEoRef()) {
+			if (!m_isEoRefKept) {
+				m_isEoRefKept = true;
+				evas_object_ref(m_eo);
+			}
+		} else if (m_isEoRefKept) {
+			m_isEoRefKept = false;
+			evas_object_unref(m_eo);
+		}
+	}
+
+	bool Widget::needKeepEoRef() const
+	{
+		return (!m_isSelfRefUnique || !needKeepSelfRef());
+	}
+
+	void Widget::updateSelfRef()
+	{
+		if (needKeepSelfRef()) {
+			if (!m_isSelfRefKept) {
+				m_isSelfRefKept = true;
+				m_rc->ref();
+			}
+		} else if (m_isSelfRefKept) {
+			m_isSelfRefKept = false;
+			m_rc->unref();
+		}
+	}
+
+	bool Widget::needKeepSelfRef() const
+	{
+		return (!m_isOwner && m_eo);
+	}
+
+	void Widget::setSelfRefUnique(const bool value)
+	{
+		if (value != m_isSelfRefUnique) {
+			m_isSelfRefUnique = value;
+			updateEoRef();
+		}
+	}
+
+	void Widget::onEoFree(Evas *e, Evas_Object *obj, void *event_info)
+	{
+		if (!m_isSelfRefKept) {
+			FLOG("UNEXPECTED! m_isSelfRefKept: %d;", m_isSelfRefKept);
+			m_eo = nullptr;
+			return;
+		}
+		if (m_isOwner || m_isEoRefKept || !m_isSelfRefUnique) {
+			ELOG("UNEXPECTED! m_isOwner: %d; m_isEoRefKept: %d; "
+					"m_isSelfRefUnique: %d;",
+					m_isOwner, m_isEoRefKept, m_isSelfRefUnique);
+			m_eo = nullptr;
+		}
+		m_isSelfRefKept = false;
+		m_rc->unref();
+	}
+
+	void Widget::onUniqueChanged(bool isUnique)
+	{
+		setSelfRefUnique(isUnique);
+	}
+
+	void Widget::delEventProxy(const EventProxiesIt it)
+	{
+		if (it != m_eventProxies.end()) {
+			m_eventProxies.erase(it);
+		}
+	}
+
+	void Widget::addEventHandler(const WidgetEvent event,
+			const WidgetEventHandler handler)
+	{
+		m_eventProxies.emplace_front(*this, event, handler);
+		m_eventProxies.front().setSelfIt(m_eventProxies.begin());
+	}
+
+	void Widget::addEventHandler(const SmartEvent event,
+			const WidgetEventHandler handler)
+	{
+		m_eventProxies.emplace_front(*this, event, handler);
+		m_eventProxies.front().setSelfIt(m_eventProxies.begin());
+	}
+
+	void Widget::delEventHandler(const WidgetEvent event,
+			const WidgetEventHandler handler)
+	{
+		delEventProxy(std::find(m_eventProxies.begin(), m_eventProxies.end(),
+				std::make_pair(event, handler)));
+	}
+
+	void Widget::delEventHandler(const SmartEvent event,
+			const WidgetEventHandler handler)
+	{
+		delEventProxy(std::find(m_eventProxies.begin(), m_eventProxies.end(),
+				std::make_pair(event, handler)));
+	}
+
+	void Widget::setFocusedImpl(const bool value)
+	{
+		evas_object_focus_set(getEo(), toEina(value));
+	}
+
+	bool Widget::isFocusedImpl() const
+	{
+		return evas_object_focus_get(getEo());
+	}
+}
diff --git a/ucl/src/gui/WidgetItem.cpp b/ucl/src/gui/WidgetItem.cpp
new file mode 100644
index 0000000..3bc242a
--- /dev/null
+++ b/ucl/src/gui/WidgetItem.cpp
@@ -0,0 +1,37 @@
+#include "ucl/gui/WidgetItem.h"
+
+namespace ucl {
+
+	void WidgetItem::setText(const TString &value) const
+	{
+		if (value.isTranslatable()) {
+			if (value.hasDomain()) {
+				elm_object_item_domain_translatable_text_set(
+						getIt(), value.getDomain(), value);
+			} else {
+				elm_object_item_translatable_text_set(getIt(), value);
+			}
+		} else {
+			elm_object_item_text_translatable_set(getIt(), EINA_FALSE);
+			elm_object_item_text_set(getIt(), value);
+		}
+	}
+
+	void WidgetItem::setPartText(
+			const EdjePart part, const TString &value) const
+	{
+		if (value.isTranslatable()) {
+			if (value.hasDomain()) {
+				elm_object_item_domain_translatable_part_text_set(
+						getIt(), part.name, value.getDomain(), value);
+			} else {
+				elm_object_item_translatable_part_text_set(
+						getIt(), part.name, value);
+			}
+		} else {
+			elm_object_item_part_text_translatable_set(getIt(),
+					part.name, EINA_FALSE);
+			elm_object_item_part_text_set(getIt(), part.name, value);
+		}
+	}
+}
diff --git a/ucl/src/gui/Window.cpp b/ucl/src/gui/Window.cpp
new file mode 100644
index 0000000..23a99d2
--- /dev/null
+++ b/ucl/src/gui/Window.cpp
@@ -0,0 +1,62 @@
+#include "ucl/gui/Window.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	// Window::Builder //
+
+	WindowSRef Window::Builder::build() const
+	{
+		if (!m_winEo && isEmpty(m_name) && isEmpty(m_title)) {
+			ELOG("Wrong built parameters!");
+			return {};
+		}
+
+		Evas_Object *winEo = m_winEo;
+		bool isOwner = m_isOwner;
+
+		if (!winEo) {
+			winEo = elm_win_add(nullptr,
+					(m_name.empty() ? m_title : m_name).c_str(),
+					static_cast<Elm_Win_Type>(m_type));
+			if (!winEo) {
+				ELOG("elm_win_add() failed!");
+				return {};
+			}
+			if (!m_isOwnerWasSet) {
+				isOwner = true;
+			}
+		}
+
+		StyledWidget bg(elm_bg_add(winEo));
+		expand(bg);
+		show(bg);
+
+		StyledWidget conform(elm_conformant_add(winEo));
+		expand(conform);
+		show(conform);
+
+		elm_win_resize_object_add(winEo, bg);
+		elm_win_resize_object_add(winEo, conform);
+
+		elm_win_indicator_opacity_set(winEo, ELM_WIN_INDICATOR_OPAQUE);
+		elm_win_conformant_set(winEo, EINA_TRUE);
+
+		auto result = makeShared<Window>(winEo, isOwner, conform);
+
+		if (m_needBindToEo) {
+			result->bindToEo();
+		}
+
+		result->setTitle(m_title.empty() ? m_name : m_title);
+
+		if (result->isRotationsSupported()) {
+			result->setRotations(m_rotations);
+		}
+
+		result->setIndicatorVisible(m_isIndicatorVisible);
+
+		return result;
+	}
+}
diff --git a/ucl/src/misc/Variant.cpp b/ucl/src/misc/Variant.cpp
new file mode 100644
index 0000000..d6cebfa
--- /dev/null
+++ b/ucl/src/misc/Variant.cpp
@@ -0,0 +1,212 @@
+#include "ucl/misc/Variant.h"
+
+#include "../common.h"
+
+namespace ucl {
+
+	// Variant //
+
+	Variant::Variant(const char *const aString, const int length) :
+		m_type(aString ? TYPE_STRING : TYPE_NIL)
+	{
+		if (aString) {
+			const int realLength = ((length < 0) ? strlen(aString) : length);
+			const UInt size = (realLength + 1);
+			if (size <= sizeof(m_aSmallStr.buffer)) {
+				strncpy(m_aSmallStr.buffer, aString, size);
+				m_type |= impl::FLAG_SMALL_STR;
+			} else {
+				m_aString.data = strndup(aString, realLength);
+				m_aString.length = realLength;
+			}
+		}
+	}
+
+	Variant::Variant(nullptr_t, const int arrayLength) :
+		m_type(static_cast<int>((arrayLength > 0) ? TYPE_ARRAY : TYPE_NIL))
+	{
+		if (arrayLength > 0) {
+			m_anArray.data = new Variant[arrayLength];
+			m_anArray.length = arrayLength;
+		}
+	}
+
+	Variant::Variant(const Variant *const anArray, const int length) :
+		Variant(nullptr, length)
+	{
+		if (length > 0) {
+			std::copy(anArray, (anArray + length), m_anArray.data);
+		}
+	}
+
+	Variant::Variant(const Variant &v) :
+		m_type(v.m_type)
+	{
+		switch (m_type) {
+		case TYPE_NIL:
+			break;
+		case TYPE_STRING:
+			m_aString.data = strndup(v.m_aString.data, v.m_aString.length);
+			m_aString.length = v.m_aString.length;
+			break;
+		case TYPE_ARRAY:
+			m_anArray.data = new Variant[v.m_anArray.length];
+			std::copy(v.m_anArray.data, (v.m_anArray.data + v.m_anArray.length),
+					m_anArray.data);
+			m_anArray.length = v.m_anArray.length;
+			break;
+		default:
+			m_raw = v.m_raw;
+			break;
+		}
+	}
+
+	bool Variant::asBool() const noexcept
+	{
+		switch (m_type) {
+		case TYPE_BOOLEAN:
+			return m_aBool.value;
+		case TYPE_INTEGER:
+			return (m_anInt.value != 0);
+		case TYPE_FLOAT:
+			return (m_aFloat.value != 0.0f);
+		case TYPE_DOUBLE:
+			return (m_aDouble.value != 0.0);
+		case TYPE_STRING:
+		case impl::TYPE_SMALL_STR:
+			{
+				const auto str = getStr();
+				return (strcasecmp(str, "true") == 0)
+					|| (strcasecmp(str, "yes") == 0)
+					|| (strcasecmp(str, "ok") == 0)
+					|| (strcasecmp(str, "on") == 0)
+					|| (strcasecmp(str, "1") == 0);
+			}
+		case TYPE_ARRAY:
+			return (m_anArray.length != 0);
+		}
+		return false;
+	}
+
+	int Variant::asInt() const noexcept
+	{
+		switch (m_type) {
+		case TYPE_BOOLEAN:
+			return static_cast<int>(m_aBool.value);
+		case TYPE_INTEGER:
+			return m_anInt.value;
+		case TYPE_FLOAT:
+			return static_cast<int>(m_aFloat.value);
+		case TYPE_DOUBLE:
+			return static_cast<int>(m_aDouble.value);
+		case TYPE_STRING:
+		case impl::TYPE_SMALL_STR:
+			return std::atoi(getStr());
+		case TYPE_ARRAY:
+			return m_anArray.length;
+		}
+		return 0;
+	}
+
+	float Variant::asFloat() const noexcept
+	{
+		switch (m_type) {
+		case TYPE_BOOLEAN:
+			return static_cast<float>(m_aBool.value);
+		case TYPE_INTEGER:
+			return static_cast<float>(m_anInt.value);
+		case TYPE_FLOAT:
+			return m_aFloat.value;
+		case TYPE_DOUBLE:
+			return static_cast<float>(m_aDouble.value);
+		case TYPE_STRING:
+		case impl::TYPE_SMALL_STR:
+			return static_cast<float>(std::atof(getStr()));
+		case TYPE_ARRAY:
+			return static_cast<float>(m_anArray.length);
+		}
+		return 0.0f;
+	}
+
+	double Variant::asDouble() const noexcept
+	{
+		switch (m_type) {
+		case TYPE_BOOLEAN:
+			return static_cast<double>(m_aBool.value);
+		case TYPE_INTEGER:
+			return static_cast<double>(m_anInt.value);
+		case TYPE_FLOAT:
+			return static_cast<double>(m_aFloat.value);
+		case TYPE_DOUBLE:
+			return m_aDouble.value;
+		case TYPE_STRING:
+		case impl::TYPE_SMALL_STR:
+			return std::atof(getStr());
+		case TYPE_ARRAY:
+			return static_cast<double>(m_anArray.length);
+		}
+		return 0.0;
+	}
+
+	Variant::CStr Variant::asString() const noexcept
+	{
+		char strBuff[impl::TMP_STR_BUFF_SIZE] = {};
+		switch (m_type) {
+		case TYPE_NIL:
+			return {"", false};
+		case TYPE_BOOLEAN:
+			return {(m_aBool.value ? "true" : "false"), false};
+		case TYPE_INTEGER:
+			snprintf(strBuff, sizeof(strBuff), "%d", m_anInt.value);
+			break;
+		case TYPE_FLOAT:
+			snprintf(strBuff, sizeof(strBuff), "%f",
+					static_cast<double>(m_aFloat.value));
+			break;
+		case TYPE_DOUBLE:
+			snprintf(strBuff, sizeof(strBuff), "%f", m_aDouble.value);
+			break;
+		case impl::TYPE_SMALL_STR:
+			return m_aSmallStr.buffer;
+		case TYPE_STRING:
+			return {m_aString.data, false};
+		case TYPE_ARRAY:
+			snprintf(strBuff, sizeof(strBuff), "%d", m_anArray.length);
+			break;
+		}
+		return strBuff;
+	}
+
+	// Non-member functions //
+
+	bool operator==(const Variant &lhs, const Variant &rhs) noexcept
+	{
+		if (lhs.m_type != rhs.m_type) {
+			return false;
+		}
+		switch (lhs.m_type) {
+		case Variant::TYPE_BOOLEAN:
+			return (lhs.m_aBool.value == rhs.m_aBool.value);
+		case Variant::TYPE_INTEGER:
+			return (lhs.m_anInt.value == rhs.m_anInt.value);
+		case Variant::TYPE_FLOAT:
+			return (lhs.m_aFloat.value == rhs.m_aFloat.value);
+		case Variant::TYPE_DOUBLE:
+			return (lhs.m_aDouble.value == rhs.m_aDouble.value);
+		case Variant::TYPE_STRING:
+		case impl::TYPE_SMALL_STR:
+			return (strcmp(lhs.getStr(), rhs.getStr()) == 0);
+		case Variant::TYPE_ARRAY:
+			if (lhs.m_anArray.length != rhs.m_anArray.length) {
+				return false;
+			}
+			for (int i = 0; i < lhs.m_anArray.length; ++i) {
+				if (lhs.m_anArray.data[i] != rhs.m_anArray.data[i]) {
+					return false;
+				}
+			}
+			return true;
+		}
+		return true;
+	}
+}
diff --git a/ucl/src/util/logging.cpp b/ucl/src/util/logging.cpp
new file mode 100644
index 0000000..cd341a5
--- /dev/null
+++ b/ucl/src/util/logging.cpp
@@ -0,0 +1,10 @@
+#include "ucl/util/logging.h"
+
+#if (UCL_DEFINE_GET_UCL_RESULT_DATA)
+#include "ucl/util/types/Result.h"
+
+ucl::ResultData getUCLResultData(const ucl::Result result)
+{
+	return ucl::getResultData(result);
+}
+#endif
diff --git a/ucl/src/util/types/Result.cpp b/ucl/src/util/types/Result.cpp
new file mode 100644
index 0000000..dee8d6c
--- /dev/null
+++ b/ucl/src/util/types/Result.cpp
@@ -0,0 +1,29 @@
+#include "ucl/util/types/Result.h"
+
+#include "ucl/util/logging.h"
+
+namespace ucl { namespace { namespace impl {
+
+	constexpr ResultData RESUT_DATA[] = {
+		{"RES_INVALID_DATA",      DLOG_ERROR},
+		{"RES_NOT_SUPPORTED",     DLOG_ERROR},
+		{"RES_IO_ERROR",          DLOG_ERROR},
+		{"RES_OUT_OF_MEMORY",     DLOG_ERROR},
+		{"RES_ILLEGAL_STATE",     DLOG_ERROR},
+		{"RES_INVALID_ARGUMENTS", DLOG_ERROR},
+		{"RES_FAIL",              DLOG_ERROR},
+		{"RES_OK",                DLOG_INFO},
+		{"RES_FALSE",             DLOG_INFO},
+		{"Unknown result value",  DLOG_ERROR},
+	};
+}}}
+
+namespace ucl {
+
+	const ResultData &getResultData(const Result result)
+	{
+		return impl::RESUT_DATA[
+			((result.value < _RES_BEGIN) || (result.value >= _RES_END)) ?
+				_RES_END : (result.value - _RES_BEGIN)];
+	}
+}