Kate: use mouse back/forward buttons to move between open documents

The direction of movement can be configured (reversed) through the
settings dialog.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>
(cherry picked from commit a9d34c1436)

kate/app/katefilelist.cpp

@@ -176,6 +176,7 @@ void KateFileList::keyPressEvent(TQKeyEvent *e) {
 // returning
 void KateFileList::contentsMousePressEvent( TQMouseEvent *e )
 {
+  if (e->button() != TQMouseEvent::LeftButton) return;
   m_lastMouseDownPos = e->pos();
 
   if ( ! itemAt( contentsToViewport( e->pos() ) ) )

kate/app/katemainwindow.cpp

@@ -151,6 +151,8 @@ KateMainWindow::KateMainWindow (TDEConfig *sconfig, const TQString &sgroup)
 
   m_dcop = new KateMainWindowDCOPIface (this);
 
+  m_mainWindow->installEventFilter(this);
+
   // setup the most important widgets
   setupMainWindow();
 
@@ -213,6 +215,7 @@ void KateMainWindow::setupMainWindow ()
   KateMDI::ToolView *ft = createToolView("kate_filelist", KMultiTabBar::Left, SmallIcon("application-vnd.tde.tdemultiple"), i18n("Documents"));
   filelist = new KateFileList (this, m_viewManager, ft, "filelist");
   filelist->readConfig(KateApp::self()->config(), "Filelist");
+  filelist->viewport()->installEventFilter(this);
 
   KateMDI::ToolView *t = createToolView("kate_fileselector", KMultiTabBar::Left, SmallIcon("document-open"), i18n("Filesystem Browser"));
   fileselector = new KateFileSelector( this, m_viewManager, t, "operator");
@@ -888,6 +891,24 @@ void KateMainWindow::readProperties(TDEConfig *config)
   config->setGroup(grp);
 }
 
+bool KateMainWindow::eventFilter(TQObject *obj, TQEvent *ev)
+{
+    if (ev->type() == TQEvent::MouseButtonRelease)
+    {
+        TQMouseEvent *mouseEvent = static_cast<TQMouseEvent *>(ev);
+        switch (mouseEvent->button())
+        {
+            case TQMouseEvent::HistoryBackButton:
+                filelist->slotPrevDocument();
+                return true;
+            case TQMouseEvent::HistoryForwardButton:
+                filelist->slotNextDocument();
+                return true;
+        }
+    }
+    return false;
+}
+
 //-------------------------------------------
 void KateMainWindow::slotSelectionChanged()
 {

kate/app/katemainwindow.h

@@ -179,6 +179,7 @@ class KateMainWindow : public KateMDI::MainWindow, virtual public KParts::PartBa
 
   protected:
     bool event( TQEvent * );
+    bool eventFilter(TQObject *obj, TQEvent *ev);
 
   private:
     static uint uniqueID;
@@ -215,7 +216,7 @@ class KateMainWindow : public KateMDI::MainWindow, virtual public KParts::PartBa
 
     KateExternalToolsMenuAction *externalTools;
     GrepTool * greptool;
-    bool m_modignore, m_grrr;
+    bool m_modignore;
 
     KateTabWidget *m_tabWidget;
 };