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/*
 * 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"); } }




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