Added proper support for closable feature, now the close button is disabled for floating widgets

src/DockAreaWidget.cpp

@@ -654,6 +654,19 @@ CDockWidget* CDockAreaWidget::nextOpenDockWidget(CDockWidget* DockWidget) const
 	}
 }
 
+
+//============================================================================
+CDockWidget::DockWidgetFeatures CDockAreaWidget::features() const
+{
+	CDockWidget::DockWidgetFeatures Features;
+	for (const auto DockWidget : dockWidgets())
+	{
+		Features &= DockWidget->features();
+	}
+
+	return Features;
+}
+
 } // namespace ads
 
 //---------------------------------------------------------------------------

src/DockAreaWidget.h

@@ -33,6 +33,7 @@
 #include <QFrame>
 
 #include "ads_globals.h"
+#include "DockWidget.h"
 
 class QXmlStreamWriter;
 
@@ -42,7 +43,6 @@ struct DockAreaWidgetPrivate;
 class CDockManager;
 class CDockContainerWidget;
 struct DockContainerWidgetPrivate;
-class CDockWidget;
 
 
 /**
@@ -206,6 +206,15 @@ public:
 	 */
 	void saveState(QXmlStreamWriter& Stream) const;
 
+	/**
+	 * This functions returns the dock widget features of all dock widget in
+	 * this area.
+	 * A bitwise and is used to combine the flags of all dock widgets. That
+	 * means, if only dock widget does not support a certain flag, the whole
+	 * dock are does not support the flag.
+	 */
+	CDockWidget::DockWidgetFeatures features() const;
+
 public slots:
 	/**
 	 * This activates the tab for the given tab index.

src/DockContainerWidget.cpp

@@ -1153,6 +1153,19 @@ QList<CDockWidget*> CDockContainerWidget::dockWidgets() const
 }
 
 
+//============================================================================
+CDockWidget::DockWidgetFeatures CDockContainerWidget::features() const
+{
+	CDockWidget::DockWidgetFeatures Features;
+	for (const auto DockArea : d->DockAreas)
+	{
+		Features &= DockArea->features();
+	}
+
+	return Features;
+}
+
+
 
 } // namespace ads
 

src/DockContainerWidget.h

@@ -33,7 +33,7 @@
 #include <QFrame>
 
 #include "ads_globals.h"
-
+#include "DockWidget.h"
 
 class QXmlStreamWriter;
 class QXmlStreamReader;
@@ -206,6 +206,15 @@ public:
 	 */
 	void dumpLayout();
 
+	/**
+	 * This functions returns the dock widget features of all dock widget in
+	 * this container.
+	 * A bitwise and is used to combine the flags of all dock widgets. That
+	 * means, if only dock widget does not support a certain flag, the whole
+	 * dock are does not support the flag.
+	 */
+	CDockWidget::DockWidgetFeatures features() const;
+
 signals:
 	/**
 	 * This signal is emitted if one or multiple dock areas has been added to

src/FloatingDockContainer.cpp

@@ -91,6 +91,17 @@ struct FloatingDockContainerPrivate
 	{
 		DraggingState = StateId;
 	}
+
+	/**
+	 * Disables the window close button if the content is not closable
+	 */
+	void disableCloseButton()
+	{
+		auto Flags = _this->windowFlags();
+		Flags |= Qt::CustomizeWindowHint;
+		Flags &= ~Qt::WindowCloseButtonHint;
+		_this->setWindowFlags(Flags);
+	}
 };
 // struct FloatingDockContainerPrivate
 
@@ -250,6 +261,10 @@ CFloatingDockContainer::CFloatingDockContainer(CDockAreaWidget* DockArea) :
 	CFloatingDockContainer(DockArea->dockManager())
 {
 	d->DockContainer->addDockArea(DockArea);
+	if (!DockArea->features().testFlag(CDockWidget::DockWidgetClosable))
+	{
+		d->disableCloseButton();
+	}
 }
 
 
@@ -258,6 +273,10 @@ CFloatingDockContainer::CFloatingDockContainer(CDockWidget* DockWidget) :
 	CFloatingDockContainer(DockWidget->dockManager())
 {
 	d->DockContainer->addDockWidget(CenterDockWidgetArea, DockWidget);
+	if (!DockWidget->features().testFlag(CDockWidget::DockWidgetClosable))
+	{
+		d->disableCloseButton();
+	}
 }
 
 //============================================================================
@@ -515,6 +534,10 @@ bool CFloatingDockContainer::restoreState(QXmlStreamReader& Stream, bool Testing
 	{
 		return false;
 	}
+	if (!d->DockContainer->features().testFlag(CDockWidget::DockWidgetClosable))
+	{
+		d->disableCloseButton();
+	}
 	onDockAreasAddedOrRemoved();
 	return true;
 }