Bug 966157 - Part 1. Implement remote NS_QUERY_EDITOR_RECT. r=masayuki

dom/events/EventStateManager.cpp

@@ -742,7 +742,9 @@ EventStateManager::PreHandleEvent(nsPresContext* aPresContext,
     break;
   case NS_QUERY_EDITOR_RECT:
     {
-      // XXX remote event
+      if (RemoteQueryContentEvent(aEvent)) {
+        break;
+      }
       ContentEventHandler handler(mPresContext);
       handler.OnQueryEditorRect(aEvent->AsQueryContentEvent());
     }

dom/ipc/PBrowser.ipdl

@@ -227,6 +227,13 @@ parent:
     prio(urgent) sync NotifyIMEMouseButtonEvent(IMENotification notification)
       returns (bool consumedByIME);
 
+    /**
+     * Notifies chrome to currect editor rect
+     *
+     *  rect         Rect of current focused editor
+     */
+    prio(urgent) async NotifyIMEEditorRect(nsIntRect rect);
+
     /**
      * Instructs chrome to end any pending composition
      *

dom/ipc/TabParent.cpp

@@ -1453,6 +1453,13 @@ TabParent::RecvNotifyIMEMouseButtonEvent(
   return true;
 }
 
+bool
+TabParent::RecvNotifyIMEEditorRect(const nsIntRect& aRect)
+{
+  mIMEEditorRect = aRect;
+  return true;
+}
+
 bool
 TabParent::RecvRequestFocus(const bool& aCanRaise)
 {
@@ -1598,6 +1605,8 @@ TabParent::RecvDispatchAfterKeyboardEvent(const WidgetKeyboardEvent& aEvent)
  *   Cocoa widget always queries selected offset, so it works on it.
  *
  * For NS_QUERY_CARET_RECT, fail if cached offset isn't equals to input
+ *
+ * For NS_QUERY_EDITOR_RECT, always success
  */
 bool
 TabParent::HandleQueryContentEvent(WidgetQueryContentEvent& aEvent)
@@ -1682,6 +1691,12 @@ TabParent::HandleQueryContentEvent(WidgetQueryContentEvent& aEvent)
       aEvent.mSucceeded = true;
     }
     break;
+  case NS_QUERY_EDITOR_RECT:
+    {
+      aEvent.mReply.mRect = mIMEEditorRect - GetChildProcessOffset();
+      aEvent.mSucceeded = true;
+    }
+    break;
   }
   return true;
 }

dom/ipc/TabParent.h

@@ -178,6 +178,7 @@ public:
     virtual bool RecvNotifyIMETextHint(const nsString& aText) MOZ_OVERRIDE;
     virtual bool RecvNotifyIMEMouseButtonEvent(const widget::IMENotification& aEventMessage,
                                                bool* aConsumedByIME) MOZ_OVERRIDE;
+    virtual bool RecvNotifyIMEEditorRect(const nsIntRect& aRect) MOZ_OVERRIDE;
     virtual bool RecvEndIMEComposition(const bool& aCancel,
                                        nsString* aComposition) MOZ_OVERRIDE;
     virtual bool RecvGetInputContext(int32_t* aIMEEnabled,
@@ -398,6 +399,7 @@ protected:
     InfallibleTArray<nsIntRect> mIMECompositionRects;
     uint32_t mIMECaretOffset;
     nsIntRect mIMECaretRect;
+    nsIntRect mIMEEditorRect;
 
     // The number of event series we're currently capturing.
     int32_t mEventCaptureDepth;

widget/PuppetWidget.cpp

@@ -530,6 +530,7 @@ PuppetWidget::NotifyIMEOfFocusChange(bool aFocus)
     IMENotification notification(NOTIFY_IME_OF_SELECTION_CHANGE);
     notification.mSelectionChangeData.mCausedByComposition = false;
     NotifyIMEOfSelectionChange(notification); // Update selection
+    NotifyIMEOfEditorRect();
   } else {
     mIMELastBlurSeqno = chromeSeqno;
   }
@@ -577,6 +578,25 @@ PuppetWidget::NotifyIMEOfUpdateComposition()
   return NS_OK;
 }
 
+nsresult
+PuppetWidget::NotifyIMEOfEditorRect()
+{
+#ifndef MOZ_CROSS_PROCESS_IME
+  return NS_OK;
+#endif
+
+  nsEventStatus status;
+  WidgetQueryContentEvent editorRectEvent(true, NS_QUERY_EDITOR_RECT, this);
+  InitEvent(editorRectEvent);
+  DispatchEvent(&editorRectEvent, status);
+  if (editorRectEvent.mSucceeded) {
+    mTabChild->SendNotifyIMEEditorRect(editorRectEvent.mReply.mRect);
+  }
+
+  return NS_OK;
+}
+
+
 nsIMEUpdatePreference
 PuppetWidget::GetIMEUpdatePreference()
 {

widget/PuppetWidget.h

@@ -216,6 +216,7 @@ private:
   nsresult NotifyIMEOfUpdateComposition();
   nsresult NotifyIMEOfTextChange(const IMENotification& aIMENotification);
   nsresult NotifyIMEOfMouseButtonEvent(const IMENotification& aIMENotification);
+  nsresult NotifyIMEOfEditorRect();
 
   class PaintTask : public nsRunnable {
   public: