Designer: Initially disable form preview.

Reviewed-by: Kai Köhne <kai.koehne@nokia.com>
Task-number: QTCREATORBUG-1762

src/plugins/designer/formeditorw.cpp

@@ -152,6 +152,7 @@ FormEditorW::FormEditorW() :
     m_actionPrint(0),
     m_actionPreview(0),
     m_actionGroupPreviewInStyle(0),
+    m_previewInStyleMenu(0),
     m_actionAboutPlugins(0),
     m_shortcutMapper(new QSignalMapper(this)),
     m_context(0),
@@ -533,7 +534,10 @@ void FormEditorW::setupActions()
 
     // Preview in style...
     m_actionGroupPreviewInStyle = m_fwm->actionGroupPreviewInStyle();
-    mformtools->addMenu(createPreviewStyleMenu(am, m_actionGroupPreviewInStyle));
+    Core::ActionContainer *previewAC = createPreviewStyleMenu(am, m_actionGroupPreviewInStyle);
+    m_previewInStyleMenu = previewAC->menu();
+    mformtools->addMenu(previewAC);
+    setPreviewMenuEnabled(false);
 
     // Form settings
     createSeparator(this, am, m_contexts,  medit, QLatin1String("FormEditor.Edit.Separator2"), Core::Constants::G_EDIT_OTHER);
@@ -608,6 +612,12 @@ Core::ActionContainer *FormEditorW::createPreviewStyleMenu(Core::ActionManager *
     return menuPreviewStyle;
 }
 
+void FormEditorW::setPreviewMenuEnabled(bool e)
+{
+    m_actionPreview->setEnabled(e);
+    m_previewInStyleMenu->setEnabled(e);
+}
+
 void FormEditorW::saveSettings(QSettings *s)
 {
     s->beginGroup(settingsGroup);
@@ -731,8 +741,7 @@ void FormEditorW::activeFormWindowChanged(QDesignerFormWindowInterface *afw)
         qDebug() << Q_FUNC_INFO << afw << " of " << m_fwm->formWindowCount();
 
     m_fwm->closeAllPreviews();
-    m_actionPreview->setEnabled(afw != 0);
-    m_actionGroupPreviewInStyle->setEnabled(afw != 0);
+    setPreviewMenuEnabled(afw != 0);
 }
 
 EditorData FormEditorW::activeEditor() const

src/plugins/designer/formeditorw.h

@@ -44,6 +44,7 @@ class QDesignerFormWindowInterface;
 
 class QAction;
 class QActionGroup;
+class QMenu;
 class QSignalMapper;
 class QSettings;
 class QToolBar;
@@ -122,6 +123,7 @@ private slots:
     void currentEditorChanged(Core::IEditor *editor);
     void toolChanged(int);
     void print();
+    void setPreviewMenuEnabled(bool e);
 
     void updateShortcut(QObject *command);
     void closeFormEditorsForXmlEditors(QList<Core::IEditor*> editors);
@@ -179,6 +181,7 @@ private:
     QAction *m_actionPrint;
     QAction *m_actionPreview;
     QActionGroup *m_actionGroupPreviewInStyle;
+    QMenu *m_previewInStyleMenu;
     QAction *m_actionAboutPlugins;
     QAction *m_modeActionSeparator;
     QSignalMapper *m_shortcutMapper;