Make tabs rearrangeable

BUGS: 334018
FIXED-IN: 4.14.0
REVIEW: 118685

shell/shell.cpp

@@ -46,6 +46,7 @@
 #include <ktabwidget.h>
 #include <kxmlguifactory.h>
 #include <QDragMoveEvent>
+#include <QTabBar>
 
 #ifdef KActivities_FOUND
 #include <KActivities/ResourceInstance>
@@ -103,10 +104,12 @@ void Shell::init()
     m_tabWidget->setElideMode( Qt::ElideRight );
     m_tabWidget->setTabBarHidden( true );
     m_tabWidget->setDocumentMode( true );
+    m_tabWidget->setMovable( true );
     connect( m_tabWidget, SIGNAL(currentChanged(int)), SLOT(setActiveTab(int)) );
     connect( m_tabWidget, SIGNAL(tabCloseRequested(int)), SLOT(closeTab(int)) );
     connect( m_tabWidget, SIGNAL(testCanDecode(const QDragMoveEvent*,bool&)), SLOT(testTabDrop(const QDragMoveEvent*,bool&)) );
     connect( m_tabWidget, SIGNAL(receivedDropEvent(QDropEvent*)), SLOT(handleTabDrop(QDropEvent*)) );
+    connect( m_tabWidget->tabBar(), SIGNAL(tabMoved(int,int)), SLOT(moveTabData(int,int)) );
 
     setCentralWidget( m_tabWidget );
 
@@ -645,6 +648,11 @@ void Shell::handleTabDrop( QDropEvent* event )
     handleDroppedUrls( list );
 }
 
+void Shell::moveTabData( int from, int to )
+{
+   m_tabs.move( from, to );
+}
+
 #include "shell.moc"
 
 /* kate: replace-tabs on; indent-width 4; */

shell/shell.h

@@ -109,6 +109,7 @@ private slots:
   void activatePrevTab();
   void testTabDrop( const QDragMoveEvent* event, bool& accept );
   void handleTabDrop( QDropEvent* event );
+  void moveTabData( int from, int to );
 
 signals:
   void restoreDocument(const KConfigGroup &group);