/**

  * 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.notification;

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

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

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

 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.logical.shared.CloseEvent;

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

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

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

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

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

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

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

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

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

 public class KSNotification extends Composite implements HasCloseHandlers<KSNotification>{

         private final int duration;

         public static final int DEFAULT_DURATION = 4000;

         private final String id = HTMLPanel.createUniqueId();

         private final String contentId = HTMLPanel.createUniqueId();

         private final String closeLinkId = HTMLPanel.createUniqueId();

         private final HTMLPanel panel = new HTMLPanel("<p id='" + contentId + "'></p><a href='javascript:return false;' title='Close' class='ks-notification-close' style='visibility: hidden' id='" + closeLinkId + "'></a>");

         public KSNotification(final String message, boolean isHtml, final int duration) {

                 this.duration = duration;

                 panel.setStyleName("ks-notification-message");

                 panel.getElement().setId(id);

                 if (isHtml) {

                         panel.add(new HTML(message), contentId);

                 } else {

                         panel.getElementById(contentId).setInnerText(message);

                 }

                 initHandlers();

                 super.initWidget(panel);

         }

         public KSNotification(final String message, boolean isHtml, boolean isError, final int duration) {

                 this(message, isHtml, duration);

                 if (isError){

                         panel.setStyleName("ks-notification-error");                        

                 }

         }

         public KSNotification(final String message, boolean isHtml) {

                 this.duration = DEFAULT_DURATION;

                 panel.setStyleName("ks-notification-message");

                 panel.getElement().setId(id);

                 if (isHtml) {

                         panel.add(new HTML(message), contentId);

                 } else {

                         panel.getElementById(contentId).setInnerText(message);

                 }

                 initHandlers();

                 super.initWidget(panel);

         }

         public KSNotification(final Widget widget, final int duration) {

                 this.duration = duration;

                 panel.setStyleName("ks-notification-message");

                 panel.getElement().setId(id);

                 panel.add(widget, contentId);

                 initHandlers();

                 super.initWidget(panel);

         }

         private void initHandlers() {

                 addDomHandler(new MouseOverHandler() {

                         @Override

                         public void onMouseOver(MouseOverEvent event) {

                                 DOM.getElementById(closeLinkId).getStyle().setProperty("visibility", "visible");

                         }

                 }, MouseOverEvent.getType());

                 addDomHandler(new MouseOutHandler() {

                         @Override

                         public void onMouseOut(MouseOutEvent event) {

                                 DOM.getElementById(closeLinkId).getStyle().setProperty("visibility", "hidden");

                         }

                 }, MouseOutEvent.getType());

                 DOM.sinkEvents(panel.getElementById(closeLinkId), Event.ONCLICK);

                 addDomHandler(new ClickHandler() {

                         @Override

                         public void onClick(ClickEvent event) {

                                 Element e = Element.as(event.getNativeEvent().getEventTarget());

                                 if (e.equals(panel.getElementById(closeLinkId))) {

                                         CloseEvent.fire(KSNotification.this, KSNotification.this);

                                 }

                         }

                 }, ClickEvent.getType());

         }

         /**

          * @return the duration

          */

         public int getDuration() {

                 return duration;

         }

         public String getId() {

                 return id;

         }

         public String getContentId() {

                 return contentId;

         }

         public String getCloseLinkId() {

                 return closeLinkId;

         }

         @Override

         public HandlerRegistration addCloseHandler(

                         CloseHandler<KSNotification> handler) {

                 return addHandler(handler, CloseEvent.getType());

         }

 }