QmlDesigner: Only the rewriter for the document should block UI

We use different rewriter for different purposes. Only
the rewriter that manages the current document should disable the UI.

Change-Id: Ic410f7ee62ce13bb0eef133619f93c05b5632a56
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/designercore/include/viewmanager.h

@@ -42,6 +42,7 @@ class DesignDocument;
 class AbstractCustomTool;
 class DesignerActionManager;
 class NodeInstanceView;
+class RewriterView;
 
 namespace Internal { class DesignModeWidget; }
 
@@ -98,6 +99,8 @@ public:
     void qmlJSEditorHelpId(const Core::IContext::HelpIdCallback &callback) const;
     DesignDocument *currentDesignDocument() const;
 
+    bool usesRewriterView(RewriterView *rewriterView);
+
 private: // functions
     Q_DISABLE_COPY(ViewManager)
 

src/plugins/qmldesigner/designercore/model/rewriterview.cpp

@@ -873,8 +873,11 @@ void RewriterView::qmlTextChanged()
                 amendQmlText();
             } else {
 #ifndef QMLDESIGNER_TEST
-                QmlDesignerPlugin::instance()->viewManager().disableWidgets();
-                m_amendTimer.start(400);
+                auto &viewManager = QmlDesignerPlugin::instance()->viewManager();
+                if (viewManager.usesRewriterView(this)) {
+                    QmlDesignerPlugin::instance()->viewManager().disableWidgets();
+                    m_amendTimer.start(400);
+                }
 #else
                 /*Keep test synchronous*/
                 amendQmlText();

src/plugins/qmldesigner/designercore/model/viewmanager.cpp

@@ -449,6 +449,11 @@ void ViewManager::reformatFileUsingTextEditorView()
     d->textEditorView.reformatFile();
 }
 
+bool ViewManager::usesRewriterView(RewriterView *rewriterView)
+{
+    return currentDesignDocument()->rewriterView() == rewriterView;
+}
+
 } // namespace QmlDesigner
 
 #endif //QMLDESIGNER_TEST