/**

  * Copyright 2010 The Kuali Foundation Licensed under the

  * Educational Community 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.osedu.org/licenses/ECL-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 org.kuali.student.common.ui.client.widgets;

 import org.kuali.student.common.ui.client.util.DebugIdUtils;

 import com.google.gwt.event.dom.client.BlurEvent;

 import com.google.gwt.event.dom.client.BlurHandler;

 import com.google.gwt.event.dom.client.FocusEvent;

 import com.google.gwt.event.dom.client.FocusHandler;

 import com.google.gwt.event.logical.shared.ValueChangeEvent;

 import com.google.gwt.event.logical.shared.ValueChangeHandler;

 import com.google.gwt.user.client.ui.RadioButton;

 /**

  * KSRadioButton wraps gwt RadioButton.  This class provides most of the same functionality, but sets KS css styles

  * for its default look and a variety of RadioButton events (for improved browser compatibility and customizability).

  *

  * @author Kuali Student Team

  *

  */

 public class KSRadioButton extends RadioButton{

     /**

      * Creates a new radio button associated with a particular group name, and initialized with the given label (optionally treated as HTML).

      *

      * @param name the name of the radio button group

      * @param label the text to appear in the label

      * @param asHTML true to treat the label as HTML, false otherwise.

      */

     public KSRadioButton(String group, String label, boolean asHTML) {

         super(group, label, asHTML);

         ensureDebugId(DebugIdUtils.createWebDriverSafeDebugId(group + "-" + label));

         setupDefaultStyle();

     }

     /**

      * Creates a new radio associated with a particular group name, and initialized with the given HTML label.

      *

      * @param name the name of the radio button group

      * @param label the text to appear in the label

      */

     public KSRadioButton(String group, String label) {

         super(group, label);

         ensureDebugId(DebugIdUtils.createWebDriverSafeDebugId(group + "-" + label));

         setupDefaultStyle();

     }

     /**

      * Creates a new radio associated with a particular group name.

      *

      * @param name the name of the radio button group

      */

     public KSRadioButton(String group) {

         super(group);

         setupDefaultStyle();

     }

     /**

      * This method sets the default style for the radio button and radio button events.

      *

      */

     private void setupDefaultStyle() {

         addStyleName("KS-Radio");

         this.addBlurHandler(new BlurHandler(){

             public void onBlur(BlurEvent event) {

                 KSRadioButton.this.removeStyleName("KS-Radio-Focus");

             }

         });

         this.addFocusHandler(new FocusHandler(){

             public void onFocus(FocusEvent event) {

                 KSRadioButton.this.addStyleName("KS-Radio-Focus");

             }

         });

         //hover does not function correctly on radio buttons

 /*        this.addMouseOverHandler(new MouseOverHandler(){

             public void onMouseOver(MouseOverEvent event) {

                 KSRadioButton.this.addStyleName(KSStyles.KS_RADIO_HOVER_STYLE);

             }

         });

         this.addMouseOutHandler(new MouseOutHandler(){

             public void onMouseOut(MouseOutEvent event) {

                 KSRadioButton.this.removeStyleName(KSStyles.KS_RADIO_HOVER_STYLE);

             }

         });*/

         this.addValueChangeHandler(new ValueChangeHandler<Boolean>(){

         @Override

             public void onValueChange(ValueChangeEvent<Boolean> event) {

                 if(KSRadioButton.this.getValue()){

                     KSRadioButton.this.addStyleName("KS-Radio-Selected");

                 }

                 else{

                     KSRadioButton.this.removeStyleName("KS-Radio-Selected");

                     KSRadioButton.this.setFocus(false);

                 }

             }

         });

     }

 }