Added support for tab index when inserting dockwidgets into area

src/DockAreaWidget.cpp

@@ -416,6 +416,10 @@ void CDockAreaWidget::addDockWidget(CDockWidget* DockWidget)
 void CDockAreaWidget::insertDockWidget(int index, CDockWidget* DockWidget,
 	bool Activate)
 {
+	if (index < 0 || index > d->ContentsLayout->count())
+	{
+		index = d->ContentsLayout->count();
+	}
 	d->ContentsLayout->insertWidget(index, DockWidget);
 	DockWidget->setDockArea(this);
 	DockWidget->tabWidget()->setDockAreaWidget(this);

src/DockContainerWidget.cpp

@@ -153,7 +153,7 @@ public:
 	 * Adds dock widget to a existing DockWidgetArea
 	 */
 	CDockAreaWidget* addDockWidgetToDockArea(DockWidgetArea area, CDockWidget* Dockwidget,
-		CDockAreaWidget* TargetDockArea);
+		CDockAreaWidget* TargetDockArea, int Index = -1);
 
 	/**
 	 * Add dock area to this container
@@ -1228,7 +1228,7 @@ void DockContainerWidgetPrivate::dumpRecursive(int level, QWidget* widget)
 
 //============================================================================
 CDockAreaWidget* DockContainerWidgetPrivate::addDockWidgetToDockArea(DockWidgetArea area,
-	CDockWidget* Dockwidget, CDockAreaWidget* TargetDockArea)
+	CDockWidget* Dockwidget, CDockAreaWidget* TargetDockArea, int Index)
 {
 	if (CenterDockWidgetArea == area)
 	{
@@ -1238,7 +1238,7 @@ CDockAreaWidget* DockContainerWidgetPrivate::addDockWidgetToDockArea(DockWidgetA
 	}
 
 	CDockAreaWidget* NewDockArea = new CDockAreaWidget(DockManager, _this);
-	NewDockArea->addDockWidget(Dockwidget);
+	NewDockArea->insertDockWidget(Index, Dockwidget);
 	auto InsertParam = internal::dockAreaInsertParameters(area);
 
 	QSplitter* TargetAreaSplitter = internal::findParent<QSplitter*>(TargetDockArea);
@@ -1315,7 +1315,7 @@ CDockContainerWidget::~CDockContainerWidget()
 
 //============================================================================
 CDockAreaWidget* CDockContainerWidget::addDockWidget(DockWidgetArea area, CDockWidget* Dockwidget,
-	CDockAreaWidget* DockAreaWidget)
+	CDockAreaWidget* DockAreaWidget, int Index)
 {
 	CDockAreaWidget* OldDockArea = Dockwidget->dockAreaWidget();
 	if (OldDockArea)
@@ -1326,7 +1326,7 @@ CDockAreaWidget* CDockContainerWidget::addDockWidget(DockWidgetArea area, CDockW
 	Dockwidget->setDockManager(d->DockManager);
 	if (DockAreaWidget)
 	{
-		return d->addDockWidgetToDockArea(area, Dockwidget, DockAreaWidget);
+		return d->addDockWidgetToDockArea(area, Dockwidget, DockAreaWidget, Index);
 	}
 	else
 	{

src/DockContainerWidget.h

@@ -181,7 +181,7 @@ public:
 	 * \return Returns the dock area widget that contains the new DockWidget
 	 */
 	CDockAreaWidget* addDockWidget(DockWidgetArea area, CDockWidget* Dockwidget,
-		CDockAreaWidget* DockAreaWidget = nullptr);
+		CDockAreaWidget* DockAreaWidget = nullptr, int Index = -1);
 
 	/**
 	 * Removes dockwidget

src/DockManager.cpp

@@ -842,11 +842,11 @@ void CDockManager::restoreHiddenFloatingWidgets()
 
 //============================================================================
 CDockAreaWidget* CDockManager::addDockWidget(DockWidgetArea area,
-	CDockWidget* Dockwidget, CDockAreaWidget* DockAreaWidget)
+	CDockWidget* Dockwidget, CDockAreaWidget* DockAreaWidget, int Index)
 {
 	d->DockWidgetsMap.insert(Dockwidget->objectName(), Dockwidget);
 	auto Container = DockAreaWidget ? DockAreaWidget->dockContainer(): this;
-	auto AreaOfAddedDockWidget = Container->addDockWidget(area, Dockwidget, DockAreaWidget);
+	auto AreaOfAddedDockWidget = Container->addDockWidget(area, Dockwidget, DockAreaWidget, Index);
 	Q_EMIT dockWidgetAdded(Dockwidget);
 	return AreaOfAddedDockWidget;
 }
@@ -886,6 +886,14 @@ CDockAreaWidget* CDockManager::addDockWidgetTabToArea(CDockWidget* Dockwidget,
 }
 
 
+//============================================================================
+CDockAreaWidget* CDockManager::insertDockWidgetTabIntoArea(CDockWidget* Dockwidget,
+		CDockAreaWidget* DockAreaWidget, int Index)
+{
+	return addDockWidget(ads::CenterDockWidgetArea, Dockwidget, DockAreaWidget, Index);
+}
+
+
 //============================================================================
 CDockWidget* CDockManager::findDockWidget(const QString& ObjectName) const
 {

src/DockManager.h

@@ -281,7 +281,7 @@ public:
 	 * \return Returns the dock area widget that contains the new DockWidget
 	 */
 	CDockAreaWidget* addDockWidget(DockWidgetArea area, CDockWidget* Dockwidget,
-		CDockAreaWidget* DockAreaWidget = nullptr);
+		CDockAreaWidget* DockAreaWidget = nullptr, int Index = -1);
 
 	/**
 	 * Adds dockwidget into the given container.
@@ -308,6 +308,14 @@ public:
 	CDockAreaWidget* addDockWidgetTabToArea(CDockWidget* Dockwidget,
 		CDockAreaWidget* DockAreaWidget);
 
+	/**
+	 * This function will inserts the given Dockwidget to the given DockAreaWidget
+	 * as a new tab at the given index.
+	 * If index is out of range, the tab is simply appended. Otherwise it is inserted at the specified position.
+	 */
+	CDockAreaWidget* insertDockWidgetTabIntoArea(CDockWidget* Dockwidget,
+		CDockAreaWidget* DockAreaWidget, int Index = -1);
+
 	/**
 	 * Adds the given DockWidget floating and returns the created
 	 * CFloatingDockContainer instance.