Bug 632953 - Clear mouse capture after window resize completes. r=jimm

view/src/Makefile.in

@@ -59,4 +59,8 @@ CPPSRCS		= \
 
 include $(topsrcdir)/config/rules.mk
 
+LOCAL_INCLUDES  = \
+                -I$(srcdir)/../../content/events/src/ \
+                $(NULL)
+
 CXXFLAGS += $(MOZ_CAIRO_CFLAGS)

view/src/nsViewManager.cpp

@@ -62,6 +62,7 @@
 #include "nsXULPopupManager.h"
 #include "nsIPresShell.h"
 #include "nsPresContext.h"
+#include "nsEventStateManager.h"
 
 static NS_DEFINE_IID(kRegionCID, NS_REGION_CID);
 
@@ -813,6 +814,20 @@ NS_IMETHODIMP nsViewManager::DispatchEvent(nsGUIEvent *aEvent,
         break;
       }
 
+    case NS_DONESIZEMOVE:
+      {
+        nsCOMPtr<nsIPresShell> shell = do_QueryInterface(mObserver);
+        if (shell) {
+          nsPresContext* presContext = shell->GetPresContext();
+          if (presContext) {
+            nsEventStateManager::ClearGlobalActiveContent(nsnull);
+          }
+    
+          mObserver->ClearMouseCapture(aView);
+        }
+      }
+      break;
+  
     case NS_XUL_CLOSE:
       {
         // if this is a popup, make a request to hide it. Note that a popuphidden

widget/public/nsGUIEvent.h

@@ -227,6 +227,9 @@ class nsHashKey;
 // keyboard accelerator indicators has changed.
 #define NS_UISTATECHANGED               (NS_WINDOW_START + 43)
 
+// Done sizing or moving a window, so ensure that the mousedown state was cleared.
+#define NS_DONESIZEMOVE                 (NS_WINDOW_START + 44)
+
 #define NS_RESIZE_EVENT                 (NS_WINDOW_START + 60)
 #define NS_SCROLL_EVENT                 (NS_WINDOW_START + 61)
 

widget/src/windows/nsWindow.cpp

@@ -5310,6 +5310,12 @@ PRBool nsWindow::ProcessMessage(UINT msg, WPARAM &wParam, LPARAM &lParam,
       DispatchPendingEvents();
       break;
 
+    case WM_EXITSIZEMOVE:
+      if (!sIsInMouseCapture) {
+        DispatchStandardEvent(NS_DONESIZEMOVE);
+      }
+      break;
+
     case WM_APPCOMMAND:
     {
       PRUint32 appCommand = GET_APPCOMMAND_LPARAM(lParam);