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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.scene.control.behavior;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.input.KeyEvent;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.Event;
import javafx.event.EventDispatchChain;
import javafx.event.EventDispatcher;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
import com.sun.javafx.scene.control.skin.ComboBoxPopupControl;
public class TwoLevelFocusListBehavior extends TwoLevelFocusBehavior {
public TwoLevelFocusListBehavior(Node node) {
tlNode = node;
// listen to all keyevents, maybe
tlNode.addEventHandler(KeyEvent.ANY, keyEventListener);
tlNode.addEventHandler(MouseEvent.MOUSE_PRESSED, mouseEventListener);
tlNode.focusedProperty().addListener(focusListener);
// block ScrollEvent from being passed down to scrollbar's skin
origEventDispatcher = tlNode.getEventDispatcher();
tlNode.setEventDispatcher(tlfEventDispatcher);
}
/*
** don't allow the Node handle a key event if it is in externalFocus mode.
** the only keyboard actions allowed are the navigation keys......
*/
final EventDispatcher preemptiveEventDispatcher = new EventDispatcher() {
@Override public Event dispatchEvent(Event event, EventDispatchChain tail) {
// block the event from being passed down to children
if (event instanceof KeyEvent && event.getEventType() == KeyEvent.KEY_PRESSED) {
if (!((KeyEvent)event).isMetaDown() && !((KeyEvent)event).isControlDown() && !((KeyEvent)event).isAltDown()) {
if (isExternalFocus()) {
//
// don't let the behaviour leak any navigation keys when
// we're not in blocking mode....
//
Object obj = event.getTarget();
switch (((KeyEvent)event).getCode()) {
case TAB :
if (((KeyEvent)event).isShiftDown()) {
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.PREVIOUS);
}
else {
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.NEXT);
}
event.consume();
break;
case UP :
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.UP);
event.consume();
break;
case DOWN :
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.DOWN);
event.consume();
break;
case LEFT :
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.LEFT);
event.consume();
break;
case RIGHT :
((Node)obj).impl_traverse(com.sun.javafx.scene.traversal.Direction.RIGHT);
event.consume();
break;
case ENTER :
setExternalFocus(false);
event.consume();
break;
default :
// this'll kill mnemonics.... unless!
Scene s = tlNode.getScene();
Event.fireEvent(s, event);
event.consume();
break;
}
}
}
}
return event;
}
};
final EventDispatcher tlfEventDispatcher = new EventDispatcher() {
@Override public Event dispatchEvent(Event event, EventDispatchChain tail) {
if ((event instanceof KeyEvent)) {
if (isExternalFocus()) {
tail = tail.prepend(preemptiveEventDispatcher);
return tail.dispatchEvent(event);
}
}
return origEventDispatcher.dispatchEvent(event, tail);
}
};
private Event postDispatchTidyup(Event event) {
// block the event from being passed down to children
if (event instanceof KeyEvent && event.getEventType() == KeyEvent.KEY_PRESSED) {
if (!isExternalFocus()) {
//
// don't let the behaviour leak any navigation keys when
// we're not in blocking mode....
//
if (!((KeyEvent)event).isMetaDown() && !((KeyEvent)event).isControlDown() && !((KeyEvent)event).isAltDown()) {
switch (((KeyEvent)event).getCode()) {
case TAB :
case UP :
case DOWN :
case LEFT :
case RIGHT :
event.consume();
break;
case ENTER :
setExternalFocus(true);
event.consume();
break;
default :
break;
}
}
}
}
return event;
}
private final EventHandler keyEventListener = new EventHandler() {
@Override public void handle(KeyEvent e) {
postDispatchTidyup(e);
}
};
/*
** When a node gets focus, put it in external-focus mode.
*/
final ChangeListener focusListener = new ChangeListener() {
@Override public void changed(ObservableValue observable, Boolean oldVal, Boolean newVal) {
if (newVal && tlPopup != null) {
setExternalFocus(false);
}
else {
boolean b = true;
if (tlNode != null) {
/*
** if the ListView is actually the popup for a combobox then
** we go straight to internal-focus
*/
Parent p = tlNode.getParent();
if (p != null) {
if (ComboBoxPopupControl.COMBO_BOX_STYLE_CLASS.equals(p.getStyleClass().toString())) {
b = false;
}
}
}
setExternalFocus(b);
}
}
};
private final EventHandler mouseEventListener = new EventHandler() {
@Override public void handle(MouseEvent e) {
setExternalFocus(false);
}
};
}