Bug 1161802 part 1 - Add FullscreenChanged callback in WidgetListener. r=roc

--HG--
extra : source : dcfb961149d8c8e56ff787fa812dc781a491ee53

widget/cocoa/nsCocoaWindow.mm

@@ -1279,6 +1279,9 @@ void nsCocoaWindow::EnteredFullScreen(bool aFullScreen, bool aNativeMode)
     mInNativeFullScreenMode = aFullScreen;
   }
   DispatchSizeModeEvent();
+  if (mWidgetListener) {
+    mWidgetListener->FullscreenChanged(aFullScreen);
+  }
 }
 
 inline bool nsCocoaWindow::ShouldToggleNativeFullscreen(bool aFullScreen)

widget/gonk/nsWindow.cpp

@@ -605,6 +605,10 @@ nsWindow::MakeFullScreen(bool aFullScreen, nsIScreen*)
                virtualBounds.width, virtualBounds.height,
                /*repaint*/true);
     }
+
+    if (nsIWidgetListener* listener = GetWidgetListener()) {
+      listener->FullscreenChanged(aFullScreen);
+    }
     return NS_OK;
 }
 

widget/gtk/nsWindow.cpp

@@ -3256,6 +3256,7 @@ nsWindow::OnWindowStateEvent(GtkWidget *aWidget, GdkEventWindowState *aEvent)
         return;
     }
 
+    bool wasInFullscreen = mSizeState == nsSizeMode_Fullscreen;
     if (aEvent->new_window_state & GDK_WINDOW_STATE_ICONIFIED) {
         LOG(("\tIconified\n"));
         mSizeState = nsSizeMode_Minimized;
@@ -3282,8 +3283,14 @@ nsWindow::OnWindowStateEvent(GtkWidget *aWidget, GdkEventWindowState *aEvent)
 #endif //ACCESSIBILITY
     }
 
-    if (mWidgetListener)
+    if (mWidgetListener) {
       mWidgetListener->SizeModeChanged(mSizeState);
+
+      bool isInFullscreen = mSizeState == nsSizeMode_Fullscreen;
+      if (isInFullscreen != wasInFullscreen) {
+        mWidgetListener->FullscreenChanged(isInFullscreen);
+      }
+    }
 }
 
 void

widget/nsIWidgetListener.cpp

@@ -54,6 +54,11 @@ nsIWidgetListener::SizeModeChanged(nsSizeMode aSizeMode)
 {
 }
 
+void
+nsIWidgetListener::FullscreenChanged(bool aInFullscreen)
+{
+}
+
 bool
 nsIWidgetListener::ZLevelChanged(bool aImmediate,
                                  nsWindowZ* aPlacement,

widget/nsIWidgetListener.h

@@ -86,6 +86,11 @@ public:
                              nsIWidget* aRequestBelow,
                              nsIWidget** aActualBelow);
 
+  /**
+   * Called when the window entered or left the fullscreen state.
+   */
+  virtual void FullscreenChanged(bool aInFullscreen);
+
   /**
    * Called when the window is activated and focused.
    */

widget/windows/nsWindow.cpp

@@ -2897,8 +2897,10 @@ nsWindow::MakeFullScreen(bool aFullScreen, nsIScreen* aTargetScreen)
     taskbarInfo->PrepareFullScreenHWND(mWnd, FALSE);
   }
 
-  if (mWidgetListener)
+  if (mWidgetListener) {
     mWidgetListener->SizeModeChanged(mSizeMode);
+    mWidgetListener->FullscreenChanged(aFullScreen);
+  }
 
   return rv;
 }