/*
* 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.skin;
import org.apache.pivot.wtk.ApplicationContext;
import org.apache.pivot.wtk.Button;
import org.apache.pivot.wtk.Component;
import org.apache.pivot.wtk.Container;
import org.apache.pivot.wtk.ContainerMouseListener;
import org.apache.pivot.wtk.Display;
import org.apache.pivot.wtk.Menu;
import org.apache.pivot.wtk.MenuPopup;
import org.apache.pivot.wtk.Mouse;
import org.apache.pivot.wtk.Point;
import org.apache.pivot.wtk.Window;
import org.apache.pivot.wtk.WindowStateListener;
/**
* Abstract base class for menu item skins.
*/
public abstract class MenuItemSkin extends ButtonSkin implements Menu.ItemListener {
protected MenuPopup menuPopup = new MenuPopup();
private WindowStateListener menuPopupWindowStateListener = new WindowStateListener.Adapter() {
@Override
public void windowOpened(Window window) {
Display display = window.getDisplay();
display.getContainerMouseListeners().add(displayMouseListener);
}
@Override
public void windowClosed(Window window, Display display, Window owner) {
display.getContainerMouseListeners().remove(displayMouseListener);
}
};
private ContainerMouseListener displayMouseListener = new ContainerMouseListener.Adapter() {
@Override
public boolean mouseDown(Container container, Mouse.Button button, int x, int y) {
Display display = (Display)container;
Component descendant = display.getDescendantAt(x, y);
if (!menuPopup.isAncestor(descendant)
&& descendant != MenuItemSkin.this.getComponent()) {
menuPopup.close();
}
return false;
}
};
protected int buttonPressInterval = 200;
protected ApplicationContext.ScheduledCallback buttonPressCallback = null;
public MenuItemSkin() {
menuPopup.getWindowStateListeners().add(menuPopupWindowStateListener);
}
@Override
public void install(Component component) {
super.install(component);
Menu.Item menuItem = (Menu.Item)component;
menuItem.getItemListeners().add(this);
menuPopup.setMenu(menuItem.getMenu());
}
@Override
public boolean isFocusable() {
return false;
}
@Override
public void mouseOver(Component component) {
super.mouseOver(component);
final Menu.Item menuItem = (Menu.Item)getComponent();
menuItem.setActive(true);
if (buttonPressCallback != null) {
buttonPressCallback.cancel();
buttonPressCallback = null;
}
if (menuItem.getMenu() != null) {
buttonPressCallback = ApplicationContext.scheduleCallback(new Runnable() {
public void run() {
menuItem.press();
}
}, buttonPressInterval);
}
}
@Override
public void mouseOut(Component component) {
super.mouseOut(component);
if (buttonPressCallback != null) {
buttonPressCallback.cancel();
buttonPressCallback = null;
}
if (!menuPopup.isOpen()) {
Menu.Item menuItem = (Menu.Item)getComponent();
menuItem.setActive(false);
}
}
@Override
public boolean mouseDown(Component component, Mouse.Button button, int x, int y) {
boolean consumed = super.mouseDown(component, button, x, y);
if (buttonPressCallback != null) {
buttonPressCallback.cancel();
buttonPressCallback = null;
}
return consumed;
}
@Override
public boolean mouseUp(Component component, Mouse.Button button, int x, int y) {
boolean consumed = super.mouseDown(component, button, x, y);
Menu.Item menuItem = (Menu.Item)getComponent();
if (menuItem.isActive()) {
menuItem.press();
}
return consumed;
}
@Override
public void enabledChanged(Component component) {
super.enabledChanged(component);
menuPopup.close(true);
}
@Override
public void buttonPressed(Button button) {
Menu.Item menuItem = (Menu.Item)getComponent();
Menu menu = menuItem.getMenu();
if (menu != null
&& !menuPopup.isOpen()) {
Display display = menuItem.getDisplay();
Point location = menuItem.mapPointToAncestor(display, getWidth(), 0);
// TODO Ensure that the popup remains within the bounds of the display
menuPopup.setLocation(location.x, location.y);
menuPopup.open(menuItem.getWindow());
menuPopup.requestFocus();
}
}
@Override
public void menuChanged(Menu.Item menuItem, Menu previousMenu) {
menuPopup.setMenu(menuItem.getMenu());
repaintComponent();
}
@Override
public void activeChanged(Menu.Item menuItem) {
if (menuItem.isActive()) {
menuItem.scrollAreaToVisible(0, 0, menuItem.getWidth(), menuItem.getHeight());
} else {
menuPopup.close(true);
}
repaintComponent();
}
}