/**

  * 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.core.statement.ui.client.widgets.table;

 import org.kuali.student.core.statement.ui.client.widgets.rules.Token;

 import com.google.gwt.core.client.GWT;

 import com.google.gwt.dom.client.EventTarget;

 import com.google.gwt.dom.client.NativeEvent;

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

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

 import com.google.gwt.event.shared.HandlerRegistration;

 import com.google.gwt.user.client.DOM;

 import com.google.gwt.user.client.Element;

 import com.google.gwt.user.client.Event;

 import com.google.gwt.user.client.Event.NativePreviewEvent;

 import com.google.gwt.user.client.Event.NativePreviewHandler;

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

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

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

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

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

 public class NodeWidget extends SimplePanel implements NativePreviewHandler {

     private Node node;

     HTML html = new HTML();

     CheckBox checkBox = new CheckBox();

     HandlerRegistration handlerRegistration;

     VerticalPanel verticalPanel = new VerticalPanel();

     public NodeWidget(Node<Token> n) {

         Event.addNativePreviewHandler(this);

         node = n;

         super.setWidth("100%");

         super.setHeight("100%");

         setNode(n);

 //        checkBox.addBlurHandler(new BlurHandler() {

   //          @Override

     //        public void onBlur(BlurEvent event) {

       //          DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffffff");

         //    }

 //        });

   //      checkBox.addFocusHandler(new FocusHandler() {

     //        @Override

       //      public void onFocus(FocusEvent event) {

         //        DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffeeff");

           //  }

 //        });

   //      super.addBlurHandler(new BlurHandler() {

     //        @Override

       //      public void onBlur(BlurEvent event) {

         //        DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffffff");

           //  }

 //        });

   //      super.addFocusHandler(new FocusHandler() {

     //        @Override

       //      public void onFocus(FocusEvent event) {

         //        DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffeeff");

           //  }

 //        });

 //        super.addClickHandler(new ClickHandler() {

   //          @Override

     //        public void onClick(ClickEvent event) {

 //                boolean before = checkBox.getValue();

   //              checkBox.setValue(!before);

     //            ValueChangeEvent.fireIfNotEqual(checkBox, before,checkBox.getValue());

       //          checkBox.setFocus(true);

         //        setFocus(true);

          //   }

        // });

         checkBox.addValueChangeHandler(new ValueChangeHandler(){

             @Override

             public void onValueChange(ValueChangeEvent event) {

                 if(checkBox.getValue() == true){

                     DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffeeff");

                 }else{

                     DOM.setStyleAttribute(NodeWidget.this.getElement(), "background", "#ffffff");

                 }

             }

         });

     }

     @Override

     public void onPreviewNativeEvent(NativePreviewEvent pevent) {

         NativeEvent event = pevent.getNativeEvent();

         EventTarget target = event.getEventTarget();

      //   System.out.println(this.getElement().is(Element.as(target)));

         if(checkBox.getElement().isOrHasChild(Element.as(target))){

             return;

         }else if(this.getElement().is(Element.as(target)) && 

                 Event.as(event).getTypeInt() == Event.ONMOUSEDOWN ){

                     GWT.log("doing", null);

                   boolean before = checkBox.getValue();

                                   checkBox.setValue(!before);

                                   ValueChangeEvent.fireIfNotEqual(checkBox, before,checkBox.getValue());

                                   //checkBox.setFocus(true);

                           //        setFocus(true);

         }

     }

     public Node getNode() {

         return node;

     }

     public void installCheckBox() {

         verticalPanel.clear();

         verticalPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);

         verticalPanel.setWidth("100%");

         verticalPanel.setHeight("100%");

         verticalPanel.add(checkBox);

         super.setWidget(verticalPanel);

         //contentPanel.setWidget(checkBox);

     }

     public boolean isSelected() {

         return checkBox.getValue() == true;

     }

     public void addSelectionHandler(ValueChangeHandler<Boolean> ch) {

         if (handlerRegistration != null) {

             handlerRegistration.removeHandler();

         }

         handlerRegistration = checkBox.addValueChangeHandler(ch);

     }

     public void setNode(Node n) {

         node = n;

         html.setHTML(node.getUserObject().toString());

         checkBox.setHTML(node.getUserObject().toString());

     }

 }