com.google.gwt.user.client.ui.SimpleRadioButton Maven / Gradle / Ivy
/*
* 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.gwt.user.client.ui;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.InputElement;
/**
* A simple radio button widget, with no label.
*
* CSS Style Rules
*
* - .gwt-SimpleRadioButton { }
* - .gwt-SimpleRadioButton-disabled { Applied when radio button is disabled }
*
*/
public class SimpleRadioButton extends SimpleCheckBox {
/**
* Creates a SimpleRadioButton widget that wraps an existing <input
* type='radio'> element.
*
* This element must already be attached to the document. If the element is
* removed from the document, you must call
* {@link RootPanel#detachNow(Widget)}.
*
* @param element the element to be wrapped
*/
public static SimpleRadioButton wrap(Element element) {
// Assert that the element is attached.
assert Document.get().getBody().isOrHasChild(element);
SimpleRadioButton radioButton = new SimpleRadioButton(element);
// Mark it attached and remember it for cleanup.
radioButton.onAttach();
RootPanel.detachOnWindowClose(radioButton);
return radioButton;
}
/**
* Creates a new radio associated with a particular group name. All radio
* buttons associated with the same group name belong to a mutually-exclusive
* set.
*
* Radio buttons are grouped by their name attribute, so changing their name
* using the setName() method will also change their associated group.
*
* @param name the group name with which to associate the radio button
*/
public SimpleRadioButton(String name) {
super(Document.get().createRadioInputElement(name), "gwt-SimpleRadioButton");
}
/**
* This constructor may be used by subclasses to explicitly use an existing
* element. This element must be an <input> element whose type is
* 'radio'.
*
* @param element the element to be used
*/
protected SimpleRadioButton(Element element) {
super(element, null);
assert InputElement.as(element).getType().equalsIgnoreCase("radio");
}
}