Back/Forward mouse buttons support (closes #4809) (#5440)

src/widgets/fileview.cpp

@@ -56,6 +56,8 @@ FileView::FileView(QWidget* parent)
   connect(ui_->up, SIGNAL(clicked()), SLOT(FileUp()));
   connect(ui_->path, SIGNAL(textChanged(QString)),
           SLOT(ChangeFilePath(QString)));
+  connect(ui_->list, SIGNAL(Back()), undo_stack_, SLOT(undo()));
+  connect(ui_->list, SIGNAL(Forward()), undo_stack_, SLOT(redo()));
 
   connect(undo_stack_, SIGNAL(canUndoChanged(bool)), ui_->back,
           SLOT(setEnabled(bool)));

src/widgets/fileviewlist.cpp

@@ -132,10 +132,17 @@ void FileViewList::DeleteSlot() { emit Delete(FilenamesFromSelection()); }
 void FileViewList::EditTagsSlot() { emit EditTags(UrlListFromSelection()); }
 
 void FileViewList::mousePressEvent(QMouseEvent* e) {
+  switch (e->button()) {
+    case Qt::XButton1:
+      emit Back();
+      break;
+    case Qt::XButton2:
+      emit Forward();
+      break;
+    // enqueue to playlist with middleClick
+    case Qt::MidButton: {
       QListView::mousePressEvent(e);
 
-  // enqueue to playlist with middleClick
-  if (e->button() == Qt::MidButton) {
       // we need to update the menu selection
       menu_selection_ = selectionModel()->selection();
 
@@ -143,6 +150,11 @@ void FileViewList::mousePressEvent(QMouseEvent* e) {
       data->setUrls(UrlListFromSelection());
       data->enqueue_now_ = true;
       emit AddToPlaylist(data);
+      break;
+    }
+    default:
+      QListView::mousePressEvent(e);
+      break;
   }
 }
 

src/widgets/fileviewlist.h

@@ -38,6 +38,8 @@ signals:
   void CopyToDevice(const QList<QUrl>& urls);
   void Delete(const QStringList& filenames);
   void EditTags(const QList<QUrl>& urls);
+  void Back();
+  void Forward();
 
  protected:
   void contextMenuEvent(QContextMenuEvent* e);