ADS: Hide detached window if not in design mode

Task-number: QDS-1672
Change-Id: Ia20113cb9025c19194d87920cf060d2b9791e52a
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/libs/advanceddockingsystem/dockmanager.cpp

@@ -98,6 +98,7 @@ namespace ADS
         bool m_autorestoreLastWorkspace; // This option is set in the Workspace Manager!
         QSettings *m_settings = nullptr;
         QString m_workspacePresetsPath;
+        bool m_modeChangeState;
 
         /**
          * Private data constructor
@@ -576,6 +577,9 @@ namespace ADS
 
     bool DockManager::save()
     {
+        if (isModeChangeState())
+            return false;
+
         emit aboutToSaveWorkspace();
 
         bool result = write(activeWorkspace(), saveState(), parentWidget());
@@ -836,6 +840,16 @@ namespace ADS
         return result;
     }
 
+    void DockManager::setModeChangeState(bool value)
+    {
+        d->m_modeChangeState = value;
+    }
+
+    bool DockManager::isModeChangeState() const
+    {
+        return d->m_modeChangeState;
+    }
+
     bool DockManager::write(const QString &workspace, const QByteArray &data, QString *errorString) const
     {
         Utils::FilePath filename = workspaceNameToFileName(workspace);

src/libs/advanceddockingsystem/dockmanager.h

@@ -473,6 +473,9 @@ public:
 
     bool isWorkspacePreset(const QString &workspace) const;
 
+    void setModeChangeState(bool value);
+    bool isModeChangeState() const;
+
 signals:
     void aboutToUnloadWorkspace(QString workspaceName);
     void aboutToLoadWorkspace(QString workspaceName);

src/plugins/qmldesigner/designmodewidget.cpp

@@ -42,6 +42,7 @@
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/actionmanager_p.h>
 #include <coreplugin/actionmanager/command.h>
+#include <coreplugin/modemanager.h>
 #include <qmldesigner/qmldesignerconstants.h>
 
 #include <coreplugin/outputpane.h>
@@ -381,6 +382,23 @@ void DesignModeWidget::setup()
         setupNavigatorHistory(currentDesignDocument()->textEditor());
 
     m_dockManager->initialize();
+
+    connect(Core::ModeManager::instance(), &Core::ModeManager::currentModeChanged,
+            this, [this](Core::Id mode, Core::Id oldMode) {
+        if (mode == Core::Constants::MODE_DESIGN) {
+            m_dockManager->reloadActiveWorkspace();
+            m_dockManager->setModeChangeState(false);
+        }
+
+        if (oldMode == Core::Constants::MODE_DESIGN
+            && mode != Core::Constants::MODE_DESIGN) {
+            m_dockManager->save();
+            m_dockManager->setModeChangeState(true);
+            for (auto floatingWidget : m_dockManager->floatingWidgets())
+                floatingWidget->hide();
+        }
+    });
+
     viewManager().enableWidgets();
     readSettings();
     show();