/*
* 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.util.Vote;
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.Keyboard;
import org.apache.pivot.wtk.Menu;
import org.apache.pivot.wtk.MenuButton;
import org.apache.pivot.wtk.MenuButtonListener;
import org.apache.pivot.wtk.MenuPopup;
import org.apache.pivot.wtk.MenuPopupStateListener;
import org.apache.pivot.wtk.Mouse;
import org.apache.pivot.wtk.Window;
import org.apache.pivot.wtk.WindowStateListener;
import org.apache.pivot.wtk.Keyboard.KeyCode;
/**
* Abstract base class for menu button skins.
*/
public abstract class MenuButtonSkin extends ButtonSkin
implements MenuButton.Skin, MenuButtonListener {
protected boolean pressed = false;
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);
window.requestFocus();
}
@Override
public void windowClosed(Window window, Display display, Window owner) {
display.getContainerMouseListeners().remove(displayMouseListener);
Window componentWindow = getComponent().getWindow();
if (componentWindow != null
&& componentWindow.isOpen()
&& !componentWindow.isClosing()) {
componentWindow.moveToFront();
}
pressed = false;
repaintComponent();
}
};
private MenuPopupStateListener menuPopupStateListener = new MenuPopupStateListener.Adapter() {
@Override
public Vote previewMenuPopupClose(MenuPopup menuPopup, boolean immediate) {
if (menuPopup.containsFocus()) {
getComponent().requestFocus();
}
return Vote.APPROVE;
}
@Override
public void menuPopupCloseVetoed(MenuPopup menuPopup, Vote reason) {
if (reason == Vote.DENY) {
menuPopup.requestFocus();
}
}
};
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 != MenuButtonSkin.this.getComponent()) {
menuPopup.close();
}
return false;
}
};
@Override
public void install(Component component) {
super.install(component);
MenuButton menuButton = (MenuButton)getComponent();
menuButton.getMenuButtonListeners().add(this);
menuPopup.setMenu(menuButton.getMenu());
menuPopup.getWindowStateListeners().add(menuPopupWindowStateListener);
menuPopup.getMenuPopupStateListeners().add(menuPopupStateListener);
}
// MenuButton.Skin methods
public Window getMenuPopup() {
return menuPopup;
}
// Component state events
@Override
public void enabledChanged(Component component) {
super.enabledChanged(component);
if (!component.isEnabled()) {
pressed = false;
}
repaintComponent();
menuPopup.close();
}
// Component mouse events
@Override
public void mouseOut(Component component) {
super.mouseOut(component);
pressed = false;
repaintComponent();
}
@Override
public boolean mouseDown(Component component, Mouse.Button button, int x, int y) {
boolean consumed = super.mouseDown(component, button, x, y);
pressed = true;
repaintComponent();
if (menuPopup.isOpen()) {
menuPopup.close();
} else {
menuPopup.open(component.getWindow());
}
return consumed;
}
@Override
public boolean mouseUp(Component component, Mouse.Button button, int x, int y) {
boolean consumed = super.mouseUp(component, button, x, y);
pressed = false;
repaintComponent();
return consumed;
}
/**
* {@link KeyCode#SPACE SPACE} Repaints the component to reflect the pressed
* state.
*
* @see #keyReleased(Component, int,
* org.apache.pivot.wtk.Keyboard.KeyLocation)
*/
@Override
public boolean keyPressed(Component component, int keyCode, Keyboard.KeyLocation keyLocation) {
boolean consumed = false;
if (keyCode == Keyboard.KeyCode.SPACE) {
pressed = true;
repaintComponent();
if (menuPopup.isOpen()) {
menuPopup.close();
} else {
menuPopup.open(component.getWindow());
}
consumed = true;
} else {
consumed = super.keyPressed(component, keyCode, keyLocation);
}
return consumed;
}
/**
* {@link KeyCode#SPACE SPACE} 'presses' the button.
*/
@Override
public boolean keyReleased(Component component, int keyCode, Keyboard.KeyLocation keyLocation) {
boolean consumed = false;
MenuButton menuButton = (MenuButton)getComponent();
if (keyCode == Keyboard.KeyCode.SPACE) {
pressed = false;
repaintComponent();
menuButton.press();
} else {
consumed = super.keyReleased(component, keyCode, keyLocation);
}
return consumed;
}
@Override
public void menuChanged(MenuButton menuButton, Menu previousMenu) {
menuPopup.setMenu(menuButton.getMenu());
}
}