/*
* Copyright 2008 Google Inc.
*
* Licensed 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 com.google.speedtracer.client.view;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.topspin.ui.client.Button;
import com.google.gwt.topspin.ui.client.ClickEvent;
import com.google.gwt.topspin.ui.client.ClickListener;
import com.google.gwt.topspin.ui.client.Container;
/**
* A button widget that provides toggling behavior.
*/
public class ToggleButton extends Button {
/**
* Css stylename declarations for {@link ToggleButton}.
*/
public interface Css extends CssResource {
String toggleButtonDown();
}
private boolean down;
private final ToggleButton.Css css;
public ToggleButton(Container container, Css css) {
super(container);
this.css = css;
addClickListener(new ClickListener() {
public void onClick(ClickEvent event) {
toggle();
}
});
}
public boolean isDown() {
return down;
}
public void toggle() {
down = !down;
String downStyleName = css.toggleButtonDown();
if (down) {
addStyleName(downStyleName);
} else {
removeStyleName(downStyleName);
}
}
}