Example #1
0
  /*
   * Fix for BugTraq ID 4041703.
   * Set the focus to a reasonable default for an Applet.
   */
  private void setDefaultFocus() {
    Component toFocus = null;
    Container parent = getParent();

    if (parent != null) {
      if (parent instanceof Window) {
        toFocus = getMostRecentFocusOwnerForWindow((Window) parent);
        if (toFocus == parent || toFocus == null) {
          toFocus = parent.getFocusTraversalPolicy().getInitialComponent((Window) parent);
        }
      } else if (parent.isFocusCycleRoot()) {
        toFocus = parent.getFocusTraversalPolicy().getDefaultComponent(parent);
      }
    }

    if (toFocus != null) {
      if (parent instanceof EmbeddedFrame) {
        ((EmbeddedFrame) parent).synthesizeWindowActivation(true);
      }
      // EmbeddedFrame might have focus before the applet was added.
      // Thus after its activation the most recent focus owner will be
      // restored. We need the applet's initial focusabled component to
      // be focused here.
      toFocus.requestFocusInWindow();
    }
  }