[NUI] the exception occuring is replaced with an error log

Because there is no guide for the application and because the application using this API will immediately crash if an exception occurs.

diff --git a/src/Tizen.NUI/src/public/BaseComponents/ViewAccessibilityWrappers.cs b/src/Tizen.NUI/src/public/BaseComponents/ViewAccessibilityWrappers.cs
index 817aea5a18d38dda1449d908d8e1080bea86812b..c0e863978e38d11f0e91806fea70fd180c660f29 100644 (file)
--- a/src/Tizen.NUI/src/public/BaseComponents/ViewAccessibilityWrappers.cs
+++ b/src/Tizen.NUI/src/public/BaseComponents/ViewAccessibilityWrappers.cs
@@ -56,7 +56,9 @@ namespace Tizen.NUI.BaseComponents
 
             if (view is null)
             {
-                throw new ArgumentException($"RefObject 0x{refObjectPtr:x} is not a View", nameof(refObjectPtr));
+                // There is no guidance for exception handling in the application layer.
+                // Therefore, it is necessary to modify the code to display error messages to the user instead of exceptions occurring.
+                Tizen.Log.Error("NUI", $"RefObject 0x{refObjectPtr:x} is not a View nameof{refObjectPtr}");
             }
 
             return view;
@@ -65,6 +67,7 @@ namespace Tizen.NUI.BaseComponents
         private static T GetInterfaceFromRefObject<T>(IntPtr refObjectPtr)
         {
             var view = GetViewFromRefObject(refObjectPtr);
+            if (view == null) { return default(T); }
 
             // NUIViewAccessible::CallMethod<T> checks whether a given interface is implemented
             // before jumping to managed code, so this condition should always be true.
@@ -114,6 +117,7 @@ namespace Tizen.NUI.BaseComponents
         private static ulong AccessibilityCalculateStatesWrapper(IntPtr self, ulong initialStates)
         {
             View view = GetViewFromRefObject(self);
+            if (view == null) { return 0; }
 
             ulong bitMask = 0UL;
 
@@ -130,6 +134,7 @@ namespace Tizen.NUI.BaseComponents
         private static void AccessibilityGetAttributes(IntPtr self, Interop.ControlDevel.AccessibilityDelegate.AccessibilityGetAttributesCallback callback, IntPtr userData)
         {
             var view = GetViewFromRefObject(self);
+            if (view == null) { return ; }
             var attributes = view.AccessibilityAttributes;
             var classKey = "class";
 
@@ -151,7 +156,10 @@ namespace Tizen.NUI.BaseComponents
 
         private static IntPtr AccessibilityGetDescriptionWrapper(IntPtr self)
         {
-            string description = GetViewFromRefObject(self).AccessibilityGetDescription();
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return IntPtr.Zero;}
+
+            string description = view.AccessibilityGetDescription();
 
             return DuplicateString(description);
         }
@@ -159,6 +167,8 @@ namespace Tizen.NUI.BaseComponents
         private static uint AccessibilityGetInterfaces(IntPtr self)
         {
             View view = GetViewFromRefObject(self);
+            if (view == null) { return 0; }
+
             uint flags = 0U;
 
             if (view is IAtspiEditableText)
@@ -196,7 +206,10 @@ namespace Tizen.NUI.BaseComponents
 
         private static IntPtr AccessibilityGetNameWrapper(IntPtr self)
         {
-            string name = GetViewFromRefObject(self).AccessibilityGetName();
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return IntPtr.Zero; }
+
+            string name = view.AccessibilityGetName();
 
             return DuplicateString(name);
         }
@@ -216,18 +229,26 @@ namespace Tizen.NUI.BaseComponents
 
         private static bool AccessibilityDoActionWrapper(IntPtr self, IntPtr name)
         {
-            return GetViewFromRefObject(self).AccessibilityDoAction(Marshal.PtrToStringAnsi(name));
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return false; }
+
+            return view.AccessibilityDoAction(Marshal.PtrToStringAnsi(name));
         }
 
         private static int AccessibilityGetActionCountWrapper(IntPtr self)
         {
-            return GetViewFromRefObject(self).AccessibilityGetActionCount();
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return 0; }
+
+            return view.AccessibilityGetActionCount();
         }
 
         private static IntPtr AccessibilityGetActionNameWrapper(IntPtr self, int index)
         {
-            string name = GetViewFromRefObject(self).AccessibilityGetActionName(index);
-
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return IntPtr.Zero; }
+            
+            string name = view.AccessibilityGetActionName(index);
             return DuplicateString(name);
         }
 
@@ -244,7 +265,10 @@ namespace Tizen.NUI.BaseComponents
 
         private static bool AccessibilityIsScrollableWrapper(IntPtr self)
         {
-            return GetViewFromRefObject(self).AccessibilityIsScrollable();
+            View view = GetViewFromRefObject(self);
+            if (view == null) { return false; }
+
+            return view.AccessibilityIsScrollable();
         }
 
         //
@@ -678,6 +702,8 @@ namespace Tizen.NUI.BaseComponents
         private static IntPtr AccessibilityGetValueTextWrapper(IntPtr self)
         {
             var view = GetViewFromRefObject(self);
+            if (view == null) { return IntPtr.Zero; }
+
             var value = GetInterfaceFromRefObject<IAtspiValue>(self);
             string text;
 
@@ -721,6 +747,7 @@ namespace Tizen.NUI.BaseComponents
         private static bool AccessibilityScrollToChildWrapper(IntPtr self, IntPtr child)
         {
             View view = GetViewFromRefObject(self);
+            if (view == null) { return false; }
 
             return view.AccessibilityScrollToChild(view.GetInstanceSafely<View>(child));
         }