/**

  * 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.field.layout.element;

 import org.kuali.student.common.ui.client.widgets.KSButton;

 import org.kuali.student.common.ui.client.widgets.KSButtonAbstract.ButtonStyle;

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

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

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

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

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

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

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

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

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

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

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

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

 /**

  * A button wrapped in an abbr tag with a special hover mechanism for help text

  * 

  * @author Kuali Student Team

  *

  */

 public class AbbrButton extends Composite implements HasClickHandlers, HasMouseOverHandlers, HasMouseOutHandlers{

         public enum AbbrButtonType{HELP, DELETE, VIEW, EXAMPLES};

         private AbbrPanel abbr;

         private KSButton button;

         private PopupPanel hoverPopup = new PopupPanel();

         public AbbrButton(AbbrButtonType type){

                 switch(type){

                         case HELP:

                                 abbr = new AbbrPanel("Help", "ks-form-module-elements-help");

                                 button = new KSButton("?", ButtonStyle.DEFAULT_ANCHOR);

                                 abbr.add(button);

                                 break;

                         case DELETE:

                                 abbr = new AbbrPanel("Delete", "ks-form-module-elements-delete");

                                 button = new KSButton("X", ButtonStyle.DEFAULT_ANCHOR);

                                 abbr.add(button);

                                 break;

                         case VIEW:

                 abbr = new AbbrPanel("View", "ks-form-module-elements-delete");

                 button = new KSButton("View", ButtonStyle.DEFAULT_ANCHOR);

                 abbr.add(button);

                             break;

                         case EXAMPLES:

                 abbr = new AbbrPanel("Examples", "ks-form-module-elements-help");

                 button = new KSButton("See examples", ButtonStyle.DEFAULT_ANCHOR);

                 abbr.add(button);

                             break;

                 }

                 this.initWidget(abbr);

         }

         public void setHoverHTML(String html){

                 hoverPopup.add(new HTMLPanel(html));

                 hoverPopup.setStyleName("ks-help-popup");

                 button.addMouseOverHandler(new MouseOverHandler(){

                         @Override

                         public void onMouseOver(MouseOverEvent event) {

                                 hoverPopup.setPopupPosition(button.getAbsoluteLeft() + button.getOffsetWidth() + 5, 

                                                 button.getAbsoluteTop());

                                 hoverPopup.show();

                         }

                 });

                 button.addMouseOutHandler(new MouseOutHandler(){

                         @Override

                         public void onMouseOut(MouseOutEvent event) {

                                 hoverPopup.hide();

                         }

                 });

         }

         public PopupPanel getHoverPopup() {

                 return hoverPopup;

         }

         public void setHoverPopup(PopupPanel hoverPopup) {

                 this.hoverPopup = hoverPopup;

         }

         @Override

         public HandlerRegistration addClickHandler(ClickHandler handler) {

                 return button.addClickHandler(handler);

         }

         @Override

         public HandlerRegistration addMouseOverHandler(MouseOverHandler handler) {

                 return button.addMouseOverHandler(handler);

         }

         @Override

         public HandlerRegistration addMouseOutHandler(MouseOutHandler handler) {

                 return button.addMouseOutHandler(handler);

         }

 }