[qt] fix up AppShell to use postEvent

widget/src/qt/nsAppShell.cpp

@@ -56,11 +56,7 @@ PRLogModuleInfo *gWidgetIMLog = nsnull;
 PRLogModuleInfo *gWidgetDrawLog = nsnull;
 #endif
 
-void nsAppShell::EventNativeCallback()
-{
-    NativeEventCallback();
-    return;
-}
+static int sPokeEvent;
 
 nsAppShell::~nsAppShell()
 {
@@ -80,14 +76,16 @@ nsAppShell::Init()
         gWidgetDrawLog = PR_NewLogModule("WidgetDraw");
 #endif
 
-    connect (this, SIGNAL(activated()), SLOT(EventNativeCallback()));
+    sPokeEvent = QEvent::registerEventType();
+
     return nsBaseAppShell::Init();
 }
 
 void
 nsAppShell::ScheduleNativeEventCallback()
 {
-  emit activated();
+    QCoreApplication::postEvent(this,
+                                new QEvent((QEvent::Type) sPokeEvent));
 }
 
 PRBool
@@ -101,3 +99,14 @@ nsAppShell::ProcessNextNativeEvent(PRBool mayWait)
   qApp->processEvents(flags);
   return PR_TRUE;
 }
+
+bool
+nsAppShell::event (QEvent *e)
+{
+    if (e->type() == sPokeEvent) {
+        NativeEventCallback();
+        return true;
+    }
+
+    return false;
+}

widget/src/qt/nsAppShell.h

@@ -58,11 +58,7 @@ public:
 
   nsresult Init();
 
-signals:
-  void activated();
-
-private slots:
-  void EventNativeCallback();
+  virtual bool event (QEvent *e);
 
 protected:
   virtual void ScheduleNativeEventCallback();