Пример #1
0
 void enableMouseEvents() {
   if (!mouseEvents) {
     mouseEvents = true;
     if (!mouseListenerAdded) {
       canvas.addMouseListener(this);
       mouseListenerAdded = true;
     }
   }
 }
Пример #2
0
 void enableKeyEvents() {
   if (!keyEvents) {
     canvas.addKeyListener(this);
     keyEvents = true;
     // listen for mouseEntered events for keyboard focusing
     if (!mouseListenerAdded) {
       canvas.addMouseListener(this);
       mouseListenerAdded = true;
     }
   }
 }