Properly reparent TabWidget to DockWidget if TabWidget is removed from TabBar

Author: githubuser0xFFFF

examples/simple/MainWindow.cpp

@@ -3,12 +3,13 @@
 #include "ui_MainWindow.h"
 
 #include <QLabel>
+#include <QTimer>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow)
 {
-    ui->setupUi(this);
+    /*ui->setupUi(this);
 
     // Create the dock manager. Because the parent parameter is a QMainWindow
     // the dock manager registers itself as the central widget.
@@ -31,7 +32,67 @@ MainWindow::MainWindow(QWidget *parent) :
 	ui->menuView->addAction(DockWidget->toggleViewAction());
 
 	// Add the dock widget to the top dock widget area
-	m_DockManager->addDockWidget(ads::TopDockWidgetArea, DockWidget);
+	m_DockManager->addDockWidget(ads::TopDockWidgetArea, DockWidget);*/
+
+    ui->setupUi(this);
+
+    // Create the dock manager. Because the parent parameter is a QMainWindow
+    // the dock manager registers itself as the central widget.
+	m_DockManager1 = new ads::CDockManager(this);
+
+	// Create example content label - this can be any application specific
+	// widget
+	ads::CDockWidget* DockWidget;
+	{
+		QLabel* l = new QLabel();
+		l->setWordWrap(true);
+		l->setAlignment(Qt::AlignTop | Qt::AlignLeft);
+		l->setText("Lorem ipsum dolor sit amet, consectetuer adipiscing elit. ");
+
+		// Create a dock widget with the title Label 1 and set the created label
+		// as the dock widget content
+		DockWidget = new ads::CDockWidget("Label 1");
+		DockWidget->setWidget(l);
+	}
+
+	ads::CDockWidget* DockWidget2;
+	{
+		QLabel* l = new QLabel();
+		l->setWordWrap(true);
+		l->setAlignment(Qt::AlignTop | Qt::AlignLeft);
+		l->setText("Lorem ipsum dolor sit amet, consectetuer adipiscing elit. ");
+
+		// Create a dock widget with the title Label 1 and set the created label
+		// as the dock widget content
+		DockWidget2 = new ads::CDockWidget("Label 2");
+		DockWidget2->setWidget(l);
+	}
+
+
+	// Add the toggleViewAction of the dock widget to the menu to give
+	// the user the possibility to show the dock widget if it has been closed
+	ui->menuView->addAction(DockWidget->toggleViewAction());
+
+	// Add the dock widget to the top dock widget area
+	m_DockManager1->addDockWidget(ads::TopDockWidgetArea, DockWidget);
+
+
+	auto funcRemoveFirstManager = [=]()
+	{
+		m_DockManager1->removeDockWidget(DockWidget);
+
+		delete m_DockManager1;
+		m_DockManager1 = nullptr;
+	};
+	QTimer::singleShot(3000, funcRemoveFirstManager);
+
+	auto funcAddSecondManager = [=]()
+	{
+		m_DockManager2 = new ads::CDockManager(this);
+
+		m_DockManager2->addDockWidget(ads::TopDockWidgetArea, DockWidget);
+	};
+	QTimer::singleShot(5000, funcAddSecondManager);
 }
 
 MainWindow::~MainWindow()

examples/simple/MainWindow.h

@@ -20,7 +20,8 @@ class MainWindow : public QMainWindow
 
 private:
     Ui::MainWindow *ui;
-    ads::CDockManager* m_DockManager;
+    ads::CDockManager* m_DockManager1;
+    ads::CDockManager* m_DockManager2;
 };
 
 #endif // MAINWINDOW_H

src/DockAreaWidget.cpp

@@ -453,6 +453,7 @@ void CDockAreaWidget::removeDockWidget(CDockWidget* DockWidget)
 	auto TabWidget = DockWidget->tabWidget();
 	TabWidget->hide();
 	d->tabBar()->removeTab(TabWidget);
+	TabWidget->setParent(DockWidget);
 	DockWidget->setDockArea(nullptr);
 	CDockContainerWidget* DockContainer = dockContainer();
 	if (NextOpenDockWidget)