Bug 1191213 nsBaseWidget::NotifyWindowMoved() shouldn't notify IME when native IME handler doesn't have focus r=m_kato

widget/gtk/IMContextWrapper.cpp

@@ -200,6 +200,23 @@ IMContextWrapper::~IMContextWrapper()
         ("GTKIM: %p ~IMContextWrapper()", this));
 }
 
+nsIMEUpdatePreference
+IMContextWrapper::GetIMEUpdatePreference() const
+{
+    nsIMEUpdatePreference::Notifications notifications =
+        nsIMEUpdatePreference::NOTIFY_SELECTION_CHANGE;
+    // If it's not enabled, we don't need position change notification.
+    if (IsEnabled()) {
+        notifications |= nsIMEUpdatePreference::NOTIFY_POSITION_CHANGE;
+    }
+    nsIMEUpdatePreference updatePreference(notifications);
+    // We shouldn't notify IME of selection change caused by changes of
+    // composition string.  Therefore, we don't need to be notified selection
+    // changes which are caused by compositionchange events handled.
+    updatePreference.DontNotifyChangesCausedByComposition();
+    return updatePreference;
+}
+
 void
 IMContextWrapper::OnDestroyWindow(nsWindow* aWindow)
 {

widget/gtk/IMContextWrapper.h

@@ -39,6 +39,8 @@ public:
     // I.e., the focus is in the normal editors.
     bool IsEnabled() const;
 
+    nsIMEUpdatePreference GetIMEUpdatePreference() const;
+
     // OnFocusWindow is a notification that aWindow is going to be focused.
     void OnFocusWindow(nsWindow* aWindow);
     // OnBlurWindow is a notification that aWindow is going to be unfocused.

widget/gtk/nsWindow.cpp

@@ -6028,14 +6028,10 @@ nsWindow::GetInputContext()
 nsIMEUpdatePreference
 nsWindow::GetIMEUpdatePreference()
 {
-    nsIMEUpdatePreference updatePreference(
-        nsIMEUpdatePreference::NOTIFY_SELECTION_CHANGE |
-        nsIMEUpdatePreference::NOTIFY_POSITION_CHANGE);
-    // We shouldn't notify IME of selection change caused by changes of
-    // composition string.  Therefore, we don't need to be notified selection
-    // changes which are caused by compositionchange events handled.
-    updatePreference.DontNotifyChangesCausedByComposition();
-    return updatePreference;
+    if (!mIMContext) {
+        return nsIMEUpdatePreference();
+    }
+    return mIMContext->GetIMEUpdatePreference();
 }
 
 bool

widget/nsBaseWidget.cpp

@@ -151,15 +151,16 @@ nsBaseWidget::nsBaseWidget()
 , mLayerManager(nullptr)
 , mCompositorVsyncDispatcher(nullptr)
 , mCursor(eCursor_standard)
-, mUpdateCursor(true)
 , mBorderStyle(eBorderStyle_none)
-, mUseAttachedEvents(false)
 , mBounds(0,0,0,0)
 , mOriginalBounds(nullptr)
 , mClipRectCount(0)
 , mSizeMode(nsSizeMode_Normal)
 , mPopupLevel(ePopupLevelTop)
 , mPopupType(ePopupTypeAny)
+, mUpdateCursor(true)
+, mUseAttachedEvents(false)
+, mIMEHasFocus(false)
 {
 #ifdef NOISY_WIDGET_LEAKS
   gNumWidgets++;
@@ -1560,7 +1561,7 @@ nsBaseWidget::NotifyWindowMoved(int32_t aX, int32_t aY)
     mWidgetListener->WindowMoved(this, aX, aY);
   }
 
-  if (GetIMEUpdatePreference().WantPositionChanged()) {
+  if (mIMEHasFocus && GetIMEUpdatePreference().WantPositionChanged()) {
     NotifyIME(IMENotification(IMEMessage::NOTIFY_IME_OF_POSITION_CHANGE));
   }
 }
@@ -1617,14 +1618,23 @@ nsBaseWidget::NotifyIME(const IMENotification& aIMENotification)
       // Otherwise, it should be handled by native IME.
       return NotifyIMEInternal(aIMENotification);
     case NOTIFY_IME_OF_FOCUS:
-    case NOTIFY_IME_OF_BLUR:
-      // If the notification is a notification which is supported by
-      // nsITextInputProcessorCallback, we should notify the
-      // TextEventDispatcher, first.  After that, notify native IME too.
+      mIMEHasFocus = true;
+      // We should notify TextEventDispatcher of focus notification, first.
+      // After that, notify native IME too.
       if (mTextEventDispatcher) {
         mTextEventDispatcher->NotifyIME(aIMENotification);
       }
       return NotifyIMEInternal(aIMENotification);
+    case NOTIFY_IME_OF_BLUR: {
+      // We should notify TextEventDispatcher of blur notification, first.
+      // After that, notify native IME too.
+      if (mTextEventDispatcher) {
+        mTextEventDispatcher->NotifyIME(aIMENotification);
+      }
+      nsresult rv = NotifyIMEInternal(aIMENotification);
+      mIMEHasFocus = false;
+      return rv;
+    }
     default:
       // Otherwise, notify only native IME for now.
       return NotifyIMEInternal(aIMENotification);

widget/nsBaseWidget.h

@@ -502,9 +502,7 @@ protected:
   nsRefPtr<WidgetShutdownObserver> mShutdownObserver;
   nsRefPtr<TextEventDispatcher> mTextEventDispatcher;
   nsCursor          mCursor;
-  bool              mUpdateCursor;
   nsBorderStyle     mBorderStyle;
-  bool              mUseAttachedEvents;
   nsIntRect         mBounds;
   nsIntRect*        mOriginalBounds;
   // When this pointer is null, the widget is not clipped
@@ -515,6 +513,10 @@ protected:
   nsPopupType       mPopupType;
   SizeConstraints   mSizeConstraints;
 
+  bool              mUpdateCursor;
+  bool              mUseAttachedEvents;
+  bool              mIMEHasFocus;
+
   static nsIRollupListener* gRollupListener;
 
   // the last rolled up popup. Only set this when an nsAutoRollup is in scope,