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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pivot.wtk;
import org.apache.pivot.collections.LinkedList;
import org.apache.pivot.collections.Sequence;
import org.apache.pivot.util.ListenerList;
/**
* Container class representing a decorated frame window.
*/
public class Frame extends Window {
private static class FrameListenerList extends WTKListenerList<FrameListener> implements
FrameListener {
@Override
public void menuBarChanged(Frame frame, MenuBar previousMenuBar) {
for (FrameListener listener : this) {
listener.menuBarChanged(frame, previousMenuBar);
}
}
}
private MenuBar menuBar = null;
private FrameListenerList frameListeners = new FrameListenerList();
public Frame() {
this(null, null);
}
public Frame(String title) {
this(title, null);
}
public Frame(Component content) {
this(null, content);
}
public Frame(String title, Component content) {
super(content);
setTitle(title);
installSkin(Frame.class);
}
public MenuBar getMenuBar() {
return menuBar;
}
public void setMenuBar(MenuBar menuBar) {
MenuBar previousMenuBar = this.menuBar;
if (previousMenuBar != menuBar) {
this.menuBar = menuBar;
if (previousMenuBar != null) {
remove(previousMenuBar);
}
if (menuBar != null) {
add(menuBar);
}
frameListeners.menuBarChanged(this, previousMenuBar);
}
}
@Override
public void moveToFront() {
super.moveToFront();
requestActive();
}
@Override
protected void descendantGainedFocus(Component descendant, Component previousFocusedComponent) {
if (menuBar != null) {
LinkedList<Component> path = new LinkedList<>();
Component ancestor = descendant;
while (!(ancestor instanceof Display)) {
path.insert(ancestor, 0);
ancestor = ancestor.getParent();
}
for (Component component : path) {
MenuHandler menuHandler = component.getMenuHandler();
if (menuHandler != null) {
menuHandler.configureMenuBar(component, menuBar);
}
}
}
super.descendantGainedFocus(descendant, previousFocusedComponent);
}
@Override
protected void descendantLostFocus(Component descendant) {
if (menuBar != null) {
LinkedList<Component> path = new LinkedList<>();
Component ancestor = descendant;
while (!(ancestor instanceof Display)) {
path.insert(ancestor, 0);
ancestor = ancestor.getParent();
}
for (Component component : path) {
MenuHandler menuHandler = component.getMenuHandler();
if (menuHandler != null) {
menuHandler.cleanupMenuBar(component, menuBar);
}
}
}
super.descendantLostFocus(descendant);
}
@Override
public Sequence<Component> remove(int index, int count) {
for (int i = index, n = index + count; i < n; i++) {
Component component = get(i);
if (component == menuBar) {
throw new UnsupportedOperationException();
}
}
// Call the base method to remove the components
return super.remove(index, count);
}
public ListenerList<FrameListener> getFrameListeners() {
return frameListeners;
}
}