Add initial functionality for Auto hide

- Add left and right side tab widgets
- Add overlay dock and overlay dock widget behavior

src/DockManager.cpp

@@ -56,6 +56,7 @@
 #include "DockAreaTitleBar.h"
 #include "DockFocusController.h"
 #include "DockSplitter.h"
+#include "OverlayDockContainer.h"
 
 #ifdef Q_OS_LINUX
 #include "linux/FloatingWidgetTitleBar.h"
@@ -99,6 +100,7 @@ struct DockManagerPrivate
 	CDockManager* _this;
 	QList<CFloatingDockContainer*> FloatingWidgets;
 	QList<CFloatingDockContainer*> HiddenFloatingWidgets;
+	QList<COverlayDockContainer*> OverlayWidgets;
 	QList<CDockContainerWidget*> Containers;
 	CDockOverlay* ContainerOverlay;
 	CDockOverlay* DockAreaOverlay;
@@ -146,6 +148,15 @@ struct DockManagerPrivate
 		}
 	}
 
+	void deleteOverlayWidgets()
+	{
+	    for (auto OverlayWidget : OverlayWidgets)
+	    {
+			OverlayWidget->cleanupAndDelete();
+	    }
+		OverlayWidgets.clear();
+	}
+
 	void markDockWidgetsDirty()
 	{
 		for (auto DockWidget : DockWidgetsMap)
@@ -430,6 +441,7 @@ bool DockManagerPrivate::restoreState(const QByteArray& State, int version)
 
     // Hide updates of floating widgets from use
     hideFloatingWidgets();
+	deleteOverlayWidgets();
     markDockWidgetsDirty();
 
     if (!restoreStateFromXml(state, version))
@@ -481,6 +493,7 @@ CDockManager::CDockManager(QWidget *parent) :
 	d(new DockManagerPrivate(this))
 {
 	createRootSplitter();
+	createSideTabBarWidgets();
 	QMainWindow* MainWindow = qobject_cast<QMainWindow*>(parent);
 	if (MainWindow)
 	{
@@ -525,6 +538,13 @@ CDockManager::~CDockManager()
 	{
 		delete FloatingWidget;
 	}
+
+	auto OverlayWidgets = d->OverlayWidgets;
+	for (auto OverlayWidget : OverlayWidgets)
+	{
+		delete OverlayWidget;
+	}
+
 	delete d;
 }
 
@@ -616,6 +636,14 @@ void CDockManager::registerFloatingWidget(CFloatingDockContainer* FloatingWidget
     ADS_PRINT("d->FloatingWidgets.count() " << d->FloatingWidgets.count());
 }
 
+//============================================================================
+void CDockManager::registerOverlayWidget(COverlayDockContainer* OverlayWidget)
+{
+	d->OverlayWidgets.append(OverlayWidget);
+	Q_EMIT overlayWidgetCreated(OverlayWidget);
+    ADS_PRINT("d->OverlayWidgets.count() " << d->OverlayWidgets.count());
+}
+
 
 //============================================================================
 void CDockManager::removeFloatingWidget(CFloatingDockContainer* FloatingWidget)
@@ -623,6 +651,11 @@ void CDockManager::removeFloatingWidget(CFloatingDockContainer* FloatingWidget)
 	d->FloatingWidgets.removeAll(FloatingWidget);
 }
 
+//============================================================================
+void CDockManager::removeOverlayWidget(COverlayDockContainer* OverlayWidget)
+{
+	d->OverlayWidgets.removeAll(OverlayWidget);
+}
 
 //============================================================================
 void CDockManager::registerDockContainer(CDockContainerWidget* DockContainer)