/**
    * 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.table;
  
  import org.kuali.student.common.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());
     }
 }