/**

  * 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 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.CheckBox;

 /**

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

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

  * @author Kuali Student Team

  *

  */

 public class KSCheckBox extends CheckBox{

     /**

      * Creates a check box with no label.

      *

      */

     public KSCheckBox(){

         super();

         setupDefaultStyle();

     }

     /**

      * Creates a check box with the specified text label.

      *

      * @param label the check box's label

      */

     public KSCheckBox(String label){

         super(label);

         setupDefaultStyle();

     }

     /**

      * This method sets the default style for the checkbox and checkbox events.

      *

      */

     private void setupDefaultStyle(){

         addStyleName("KS-Checkbox");

         this.addBlurHandler(new BlurHandler(){

             public void onBlur(BlurEvent event) {

                 KSCheckBox.this.removeStyleName("KS-Checkbox-Focus");

             }

         });

         this.addFocusHandler(new FocusHandler(){

             public void onFocus(FocusEvent event) {

                 KSCheckBox.this.addStyleName("KS-Checkbox-Focus");

             }

         });

         //hover does not function fully for check boxes as is

 /*        this.addMouseOverHandler(new MouseOverHandler(){

             public void onMouseOver(MouseOverEvent event) {

                 KSCheckBox.this.addStyleName(KSStyles.KS_CHECKBOX_HOVER_STYLE);

             }

         });

         this.addMouseOutHandler(new MouseOutHandler(){

             public void onMouseOut(MouseOutEvent event) {

                 KSCheckBox.this.removeStyleName(KSStyles.KS_CHECKBOX_HOVER_STYLE);

             }

         });*/

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

             @Override

                 public void onValueChange(ValueChangeEvent<Boolean> event) {

                     if(KSCheckBox.this.getValue()){

                         KSCheckBox.this.addStyleName("KS-Checkbox-Checked");

                     }

                     else{

                         KSCheckBox.this.removeStyleName("KS-Checkbox-Checked");

                         KSCheckBox.this.setFocus(false);

                     }

                 }

             });

     }

 }