ProjectExplorer: Let the user delete sessions via the "Delete" key

Task-number: QTCREATORBUG-17668
Change-Id: Id827be147627a54953e6495be503c97b31232cf3
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/sessionview.cpp

@@ -141,5 +141,16 @@ void SessionView::showEvent(QShowEvent *event)
     setFocus();
 }
 
+void SessionView::keyPressEvent(QKeyEvent *event)
+{
+    if (event->key() != Qt::Key_Delete) {
+        TreeView::keyPressEvent(event);
+        return;
+    }
+    const QString session = currentSession();
+    if (!session.isEmpty() && session != "default" && session != SessionManager::activeSession())
+        deleteCurrentSession();
+}
+
 } // namespace Internal
 } // namespace ProjectExplorer

src/plugins/projectexplorer/sessionview.h

@@ -51,15 +51,15 @@ public:
     void selectActiveSession();
     void selectSession(const QString &sessionName);
 
-protected:
-    void showEvent(QShowEvent* event) override;
-
 signals:
     void activated(const QString &session);
     void selected(const QString &session);
     void sessionSwitched();
 
 private:
+    void showEvent(QShowEvent* event) override;
+    void keyPressEvent(QKeyEvent *event) override;
+
     SessionModel m_sessionModel;
 };