Delay maximize operation by one event cycle

The result of maximizing a window might be the decoration
going away. Because of that we need to delay the handling of
maximize and title bar double click by one cycle as had been
done for other close operations in 0fea5325

BUG: 304870
FIXED-IN: 4.9.1
REVIEW: 105961

clients/aurorae/src/aurorae.cpp

@@ -455,6 +455,34 @@ void AuroraeClient::doCloseWindow()
     KDecorationUnstable::closeWindow();
 }
 
+void AuroraeClient::maximize(int button)
+{
+    // a maximized window does not need to have a window decoration
+    // in that case we need to delay handling by one cycle
+    // BUG: 304870
+    QMetaObject::invokeMethod(qobject_cast< KDecorationUnstable* >(this),
+                              "doMaximzie",
+                              Qt::QueuedConnection,
+                              Q_ARG(int, button));
+}
+
+void AuroraeClient::doMaximzie(int button)
+{
+    KDecorationUnstable::maximize(static_cast<Qt::MouseButton>(button));
+}
+
+void AuroraeClient::titlebarDblClickOperation()
+{
+    // the double click operation can result in a window being maximized
+    // see maximize
+    QMetaObject::invokeMethod(qobject_cast< KDecorationUnstable* >(this), "doTitlebarDblClickOperation", Qt::QueuedConnection);
+}
+
+void AuroraeClient::doTitlebarDblClickOperation()
+{
+    KDecorationUnstable::titlebarDblClickOperation();
+}
+
 } // namespace Aurorae
 
 extern "C"

clients/aurorae/src/aurorae.h

@@ -145,10 +145,14 @@ public slots:
     void titleReleased(Qt::MouseButton button, Qt::MouseButtons buttons);
     void titleMouseMoved(Qt::MouseButton button, Qt::MouseButtons buttons);
     void closeWindow();
+    void titlebarDblClickOperation();
+    void maximize(int button);
 
 private slots:
     void themeChanged();
     void doCloseWindow();
+    void doTitlebarDblClickOperation();
+    void doMaximzie(int button);
 
 private:
     QGraphicsView *m_view;