'No active node' message is printed to statusbar upon attempt to delete when there is no active node

.gitignore

@@ -1 +1,4 @@
 *.qm
+*.o
+Makefile
+ui_*

graphwidget.cpp

@@ -1,13 +1,17 @@
 #include "graphwidget.h"
+
 #include <QDebug>
-#include "node.h"
+#include <QStatusBar>
 
-//#include <QGraphicsTextItem>
+
+#include "node.h"
 #include "edge.h"
 #include "math.h"
+#include "mainwindow.h"
 
 GraphWidget::GraphWidget(QWidget *parent) :
     QGraphicsView(parent),
+    m_parent(parent),
     m_activeNode(0),
     m_showingNodeNumbers(false),
     m_followNode(0)
@@ -237,6 +241,12 @@ void GraphWidget::keyPressEvent(QKeyEvent *event)
                  showingAllNodeNumbers(false);
              }
          }
+         else
+         {
+             dynamic_cast<MainWindow *>(m_parent)->getStatusBar()->showMessage(
+                         tr("No active node "),
+                         5000); // millisec
+         }
 
          break;
 

graphwidget.h

@@ -34,6 +34,7 @@ private:
     bool numberStartsWithNumber(const int &number, const int &prefix);
 
     QList<Node *> m_nodeList;
+    QWidget *m_parent;
     Node *m_activeNode;
     QGraphicsScene *m_scene;
     bool m_showingNodeNumbers;

mainwindow.cpp

@@ -47,7 +47,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(m_ui->actionAbout_QtMindMap, SIGNAL(activated()), this,
             SLOT(about()));
 
-    m_graphicsView = new GraphWidget(m_ui->centralWidget);
+    m_graphicsView = new GraphWidget(this);
     setCentralWidget(m_graphicsView);
 }
 
@@ -120,3 +120,8 @@ void MainWindow::aboutDestroyed()
     setEnabled(true);
 
 }
+
+QStatusBar * MainWindow::getStatusBar()
+{
+    return m_ui->statusBar;
+}

mainwindow.h

@@ -18,6 +18,7 @@ class MainWindow : public QMainWindow
 public:
     explicit MainWindow(QWidget *parent = 0);
     ~MainWindow();
+     QStatusBar * getStatusBar();
 
 public slots:
     void klakk();