/*
* Copyright 2010 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.gwt.cell.client;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.dom.client.NativeEvent;
/**
* A {@link Cell} used to render a checkbox.
*
* <p>
* Note: This class is new and its interface subject to change.
* </p>
*/
public class CheckboxCell extends AbstractCell<Boolean> {
@Override
public boolean consumesEvents() {
return true;
}
@Override
public Object onBrowserEvent(Element parent, Boolean value, Object viewData,
NativeEvent event, ValueUpdater<Boolean> valueUpdater) {
String type = event.getType();
if (valueUpdater != null && "change".equals(type)) {
InputElement input = parent.getFirstChild().cast();
valueUpdater.update(input.isChecked());
}
return viewData;
}
@Override
public void render(Boolean data, Object viewData, StringBuilder sb) {
sb.append("<input type=\"checkbox\"");
if ((data != null) && (data == true)) {
sb.append(" checked");
}
sb.append("/>");
}
}