fix in SupportsNativeWidgets() to draw so we can continue working, but things...

fix in SupportsNativeWidgets() to draw so we can continue working, but things are not fixed for real. Read the comment in that method for more details.

gfx/src/mac/nsDeviceContextMac.cpp

@@ -100,7 +100,25 @@ NS_IMETHODIMP nsDeviceContextMac :: CreateRenderingContext(nsIRenderingContext *
 NS_IMETHODIMP nsDeviceContextMac :: SupportsNativeWidgets(PRBool &aSupportsWidgets)
 {
   //XXX it is very critical that this not lie!! MMP
-  aSupportsWidgets = PR_FALSE;
+  
+  //  VERY IMPORTANT (pinkerton)
+  // This routine should return true if the widgets behave like Win32
+  // "windows", that is they paint themselves and the app never knows about
+  // them or has to send them update events. We were returning false which
+  // meant that raptor needed to make sure to redraw them. However, if we
+  // return false, the widgets never get created because the CreateWidget()
+  // call in nsView never creates the widget. If we return true (which makes
+  // things work), we are lying because the controls really need those
+  // precious update/repaint events.
+  // 
+  // The situation we need is the following:
+  // - return false from SupportsNativeWidgets()
+  // - Create() is called on widgets when the above case is true.
+  // 
+  // Raptor currently doesn't work this way and needs to be fixed.
+  // (please remove this comment when this situation is rectified)
+  
+  aSupportsWidgets = PR_TRUE;
 
   return NS_OK;
 }

widget/src/mac/nsDeviceContextMac.cpp

@@ -100,7 +100,25 @@ NS_IMETHODIMP nsDeviceContextMac :: CreateRenderingContext(nsIRenderingContext *
 NS_IMETHODIMP nsDeviceContextMac :: SupportsNativeWidgets(PRBool &aSupportsWidgets)
 {
   //XXX it is very critical that this not lie!! MMP
-  aSupportsWidgets = PR_FALSE;
+  
+  //  VERY IMPORTANT (pinkerton)
+  // This routine should return true if the widgets behave like Win32
+  // "windows", that is they paint themselves and the app never knows about
+  // them or has to send them update events. We were returning false which
+  // meant that raptor needed to make sure to redraw them. However, if we
+  // return false, the widgets never get created because the CreateWidget()
+  // call in nsView never creates the widget. If we return true (which makes
+  // things work), we are lying because the controls really need those
+  // precious update/repaint events.
+  // 
+  // The situation we need is the following:
+  // - return false from SupportsNativeWidgets()
+  // - Create() is called on widgets when the above case is true.
+  // 
+  // Raptor currently doesn't work this way and needs to be fixed.
+  // (please remove this comment when this situation is rectified)
+  
+  aSupportsWidgets = PR_TRUE;
 
   return NS_OK;
 }