/*
* Ext GWT 2.2.4 - Ext for GWT
* Copyright(c) 2007-2010, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget.form;
import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.event.ComponentEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.FieldEvent;
import com.extjs.gxt.ui.client.util.Util;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Event;
/**
* Single radio field. Same as Checkbox, but provided as a convenience for
* automatically setting the input type. Radio grouping is handled automatically
* by the browser if you give each radio in a group the same name.
*
* <dl>
* <dt>Inherited Events:</dt>
* <dd>Field Focus</dd>
* <dd>Field Blur</dd>
* <dd>Field Change</dd>
* <dd>Field Invalid</dd>
* <dd>Field Valid</dd>
* <dd>Field KeyPress</dd>
* <dd>Field SpecialKey</dd>
* </dl>
*/
public class Radio extends CheckBox {
protected RadioGroup group;
/**
* Returns the radios container group.
*
* @return the group
*/
public RadioGroup getGroup() {
return group;
}
@Override
public void setName(String name) {
this.name = name;
if (afterRender) {
replaceInputElement(DOM.createInputRadio(name));
if (isAttached()) {
alignElements();
}
}
}
@Override
public void setValue(Boolean value) {
if (value == null) {
value = new Boolean(false);
}
focusValue = value;
if (value && group != null) {
group.onRadioSelected(this);
}
super.setValue(value);
}
@Override
protected void fireChangeEvent(Object oldValue, Object value) {
super.fireChangeEvent(oldValue, value);
if (value != null && value instanceof Boolean && ((Boolean) value).booleanValue()
&& !Util.equalWithNull(oldValue, value) && group != null) {
FieldEvent e = new FieldEvent(group);
e.setOldValue(oldValue);
e.setValue(value);
group.fireEvent(Events.Change, e);
}
}
@Override
protected void onClick(ComponentEvent be) {
// if we click the boxLabel, the browser fires an own click event
// automatically, so we ignore one of it
if (boxLabelEl != null && boxLabelEl.dom.isOrHasChild(be.getTarget())) {
return;
}
if (readOnly) {
be.stopEvent();
return;
}
setValue(true);
}
private void replaceInputElement(Element elem) {
InputElement newInputElem = InputElement.as(elem);
int tabIndex = getTabIndex();
boolean checked = getValue();
boolean enabled = isEnabled();
String uid = input.getId();
String accessKey = InputElement.as(input.dom).getAccessKey();
int sunkEvents = Event.getEventsSunk(input.dom);
String styleName = input.getStyleName();
String valueAttribute = getValueAttribute();
getElement().replaceChild(newInputElem, input.dom);
Event.sinkEvents(elem, 0);
input = new El((Element) Element.as(newInputElem));
input.makePositionable();
Event.sinkEvents(input.dom, sunkEvents);
input.setId(uid);
if (!"".equals(accessKey)) {
InputElement.as(input.dom).setAccessKey(accessKey);
}
setTabIndex(tabIndex);
setValueAttribute(valueAttribute);
setValue(checked);
setEnabled(enabled);
input.setStyleName(styleName);
}
}