/*
* Copyright 2010 Daniel Kurka
*
* 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.googlecode.mgwt.ui.client.widget.button;
import com.google.gwt.event.dom.client.TouchCancelEvent;
import com.google.gwt.event.dom.client.TouchEndEvent;
import com.google.gwt.event.dom.client.TouchMoveEvent;
import com.google.gwt.event.dom.client.TouchStartEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.HasText;
import com.googlecode.mgwt.dom.client.event.tap.TapEvent;
import com.googlecode.mgwt.dom.client.event.tap.TapHandler;
import com.googlecode.mgwt.dom.client.event.touch.TouchHandler;
import com.googlecode.mgwt.ui.client.MGWT;
import com.googlecode.mgwt.ui.client.widget.touch.TouchWidget;
/**
* Base class for all buttons
*/
public abstract class ButtonBase extends TouchWidget implements HasText {
private final ButtonBaseAppearance baseAppearance;
/**
* Construct a button with a given element and css
*
* @param element the element to use
* @param css the css to use
*/
public ButtonBase(ButtonBaseAppearance appearance) {
this.baseAppearance = appearance;
addTouchHandler(new TouchHandler() {
@Override
public void onTouchCancel(TouchCancelEvent event) {
event.stopPropagation();
event.preventDefault();
removeStyleName(ButtonBase.this.baseAppearance.css().active());
if (MGWT.getFormFactor().isDesktop()) {
DOM.releaseCapture(getElement());
}
}
@Override
public void onTouchEnd(TouchEndEvent event) {
event.stopPropagation();
event.preventDefault();
removeStyleName(ButtonBase.this.baseAppearance.css().active());
if (MGWT.getFormFactor().isDesktop()) {
DOM.releaseCapture(getElement());
}
}
@Override
public void onTouchMove(TouchMoveEvent event) {
event.preventDefault();
event.stopPropagation();
}
@Override
public void onTouchStart(TouchStartEvent event) {
event.stopPropagation();
event.preventDefault();
addStyleName(ButtonBase.this.baseAppearance.css().active());
if (MGWT.getFormFactor().isDesktop()) {
DOM.setCapture(getElement());
}
}
});
addTapHandler(new TapHandler() {
@Override
public void onTap(TapEvent event) {
removeStyleName(ButtonBase.this.baseAppearance.css().active());
}
});
}
@Override
public String getText() {
return getElement().getInnerText();
}
@Override
public void setText(String text) {
getElement().setInnerText(text);
}
@Override
public HandlerRegistration addTapHandler(TapHandler handler) {
return super.addTapHandler(handler);
}
}