[NUI] DragAndDrop : Add APIs for Window

[platform/core/csapi/tizenfx.git] / src / Tizen.NUI / src / public / DragAndDrop / DragAndDrop.cs

diff --git a/src/Tizen.NUI/src/public/DragAndDrop/DragAndDrop.cs b/src/Tizen.NUI/src/public/DragAndDrop/DragAndDrop.cs
index 958059e..c60558e 100755 (executable)
--- a/src/Tizen.NUI/src/public/DragAndDrop/DragAndDrop.cs
+++ b/src/Tizen.NUI/src/public/DragAndDrop/DragAndDrop.cs
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright(c) 2023 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,16 +33,21 @@ namespace Tizen.NUI
         public delegate void SourceEventHandler(DragSourceEventType sourceEventType);
         private delegate void InternalSourceEventHandler(int sourceEventType);
         public delegate void DragAndDropEventHandler(View targetView, DragEvent dragEvent);
+        public delegate void DragAndDropWindowEventHandler(Window targetWindow, DragEvent dragEvent);
         private delegate void InternalDragAndDropEventHandler(global::System.IntPtr dragEvent);
         private InternalSourceEventHandler sourceEventCb;
         private Dictionary<View, InternalDragAndDropEventHandler> targetEventDictionary = new Dictionary<View, InternalDragAndDropEventHandler>();
+        private Dictionary<Window, InternalDragAndDropEventHandler> targetWindowEventDictionary = new Dictionary<Window, InternalDragAndDropEventHandler>();
         private View mShadowView;
         private Window mDragWindow;
-        private int shadowWidth = 100;
-        private int shadowHeight = 100;
+        private int shadowWidth;
+        private int shadowHeight;
 
         private bool initDrag = false;
 
+        private const int MinDragWindowWidth = 100;
+        private const int MinDragWindowHeight = 100;
+
         private DragAndDrop() : this(Interop.DragAndDrop.New(), true)
         {
             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
@@ -107,15 +112,14 @@ namespace Tizen.NUI
             shadowWidth = (int)shadowView.Size.Width;
             shadowHeight = (int)shadowView.Size.Height;
 
-            // Prevents shadowView size from being smaller than 100 pixel
-            if (shadowView.Size.Width < 100)
+            if (shadowView.Size.Width < MinDragWindowWidth)
             {
-                shadowWidth = 100;
+                shadowWidth = MinDragWindowWidth;
             }
 
-            if (shadowView.Size.Height < 100)
+            if (shadowView.Size.Height < MinDragWindowHeight)
             {
-                shadowHeight = 100;
+                shadowHeight = MinDragWindowHeight;
             }
 
             mDragWindow = new Window("DragWindow", new Rectangle(-shadowWidth, -shadowHeight, shadowWidth, shadowHeight), true)
@@ -213,7 +217,7 @@ namespace Tizen.NUI
             if (!Interop.DragAndDrop.AddListener(SwigCPtr, View.getCPtr(targetView),
                                                  new global::System.Runtime.InteropServices.HandleRef(this, Marshal.GetFunctionPointerForDelegate<Delegate>(cb))))
             {
-                 throw new InvalidOperationException("Fail to AddListener");
+                 throw new InvalidOperationException("Fail to AddListener for View");
             }
         }
 
@@ -227,7 +231,7 @@ namespace Tizen.NUI
         {
             if (!targetEventDictionary.ContainsKey(targetView))
             {
-                 throw new InvalidOperationException("Fail to RemoveListener");
+                 throw new InvalidOperationException("Fail to RemoveListener for View");
             }
 
             InternalDragAndDropEventHandler cb = targetEventDictionary[targetView];
@@ -235,7 +239,77 @@ namespace Tizen.NUI
             if (!Interop.DragAndDrop.RemoveListener(SwigCPtr, View.getCPtr(targetView),
                                                     new global::System.Runtime.InteropServices.HandleRef(this, Marshal.GetFunctionPointerForDelegate<Delegate>(cb))))
             {
-                 throw new InvalidOperationException("Fail to RemoveListener");
+                 throw new InvalidOperationException("Fail to RemoveListener for View");
+            }
+        }
+
+        /// <summary>
+        /// Adds listener for drop targets
+        /// </summary>
+        /// <param name="targetWindow">The target Window</param>
+        /// <param name="callback">The callback function to get drag event when the drag source enters, moves, leaves and drops on the drop target</param>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public void AddListener(Window targetWindow, DragAndDropWindowEventHandler callback)
+        {
+            InternalDragAndDropEventHandler cb = (dragEvent) =>
+            {
+                DragType type = (DragType)Interop.DragAndDrop.GetAction(dragEvent);
+                DragEvent ev = new DragEvent();
+                global::System.IntPtr cPtr = Interop.DragAndDrop.GetPosition(dragEvent);
+                ev.Position = (cPtr == global::System.IntPtr.Zero) ? null : new Position(cPtr, false);
+
+                if (type == DragType.Enter)
+                {
+                    ev.DragType = type;
+                    callback(targetWindow, ev);
+                }
+                else if (type == DragType.Leave)
+                {
+                    ev.DragType = type;
+                    callback(targetWindow, ev);
+                }
+                else if (type == DragType.Move)
+                {
+                    ev.DragType = type;
+                    callback(targetWindow, ev);
+                }
+                else if (type == DragType.Drop)
+                {
+                    ev.DragType = type;
+                    ev.MimeType = Interop.DragAndDrop.GetMimeType(dragEvent);
+                    ev.Data = Interop.DragAndDrop.GetData(dragEvent);
+                    callback(targetWindow, ev);
+                }
+            };
+
+            targetWindowEventDictionary.Add(targetWindow, cb);
+
+            if (!Interop.DragAndDrop.WindowAddListener(SwigCPtr, Window.getCPtr(targetWindow),
+                                                       new global::System.Runtime.InteropServices.HandleRef(this, Marshal.GetFunctionPointerForDelegate<Delegate>(cb))))
+            {
+                 throw new InvalidOperationException("Fail to AddListener for Window");
+            }
+        }
+
+        /// <summary>
+        /// Removes listener for drop targets
+        /// </summary>
+        /// <param name="targetWindow">The target window</param>
+        /// <param name="callback">The callback function to remove</param>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public void RemoveListener(Window targetWindow, DragAndDropWindowEventHandler callback)
+        {
+            if (!targetWindowEventDictionary.ContainsKey(targetWindow))
+            {
+                 throw new InvalidOperationException("Fail to RemoveListener for Window");
+            }
+
+            InternalDragAndDropEventHandler cb = targetWindowEventDictionary[targetWindow];
+            targetWindowEventDictionary.Remove(targetWindow);
+            if (!Interop.DragAndDrop.WindowRemoveListener(SwigCPtr, Window.getCPtr(targetWindow),
+                                                          new global::System.Runtime.InteropServices.HandleRef(this, Marshal.GetFunctionPointerForDelegate<Delegate>(cb))))
+            {
+                 throw new InvalidOperationException("Fail to RemoveListener for Window");
             }
         }
     }