/**

  * 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.lum.common.client.lo;

 import java.util.List;

 import org.kuali.student.common.assembly.data.Data;

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

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

 import org.kuali.student.common.ui.client.widgets.layout.VerticalFlowPanel;

 import org.kuali.student.common.ui.client.widgets.list.HasSelectionChangeHandlers;

 import org.kuali.student.common.ui.client.widgets.list.SelectionChangeEvent;

 import org.kuali.student.common.ui.client.widgets.list.SelectionChangeHandler;

 import org.kuali.student.lum.lo.dto.LoCategoryInfo;

 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.ui.HorizontalPanel;

 /**

  * This is a description of what this class does - hjohnson don't forget to fill this in. 

  * 

  * @author Kuali Student Team (kuali-student@googlegroups.com)

  *

  */

 public class LOPicker extends HorizontalPanel implements HasSelectionChangeHandlers{

         KSLabel countLabel = new KSLabel();

     KSTextArea loTextArea;

     VerticalFlowPanel vp = new VerticalFlowPanel();

     LOCategoryBuilder loCategoryBuilder;

     Data metaInfoData; // temporary storage of metaInfo data this is needed when LO is updated

     public LOPicker(String messageGroup, String type, String state, String loRepoKey, int maxLength) {

         super();

         this.loTextArea = new KSTextArea(countLabel, maxLength);

         loCategoryBuilder = new LOCategoryBuilder(messageGroup, type, state, loRepoKey);

         loTextArea.removeStyleName("ks-form-module-elements");

         loTextArea.addStyleName("KS-LOTextArea");

         countLabel.addStyleName("ks-form-module-elements-help-text");

         countLabel.addStyleName("loText-count-label");

         vp.add(loTextArea);

         vp.add(countLabel);

         super.add(vp);

         super.add(loCategoryBuilder);

         loTextArea.addValueChangeHandler(new ValueChangeHandler<String>(){

                         public void onValueChange(ValueChangeEvent<String> event) {

                                 fireChangeEvent();

                         }                

         });

         loCategoryBuilder.addValueChangeHandler(new ValueChangeHandler<List<LoCategoryInfo>>(){

                         public void onValueChange(

                                         ValueChangeEvent<List<LoCategoryInfo>> event) {

                                 fireChangeEvent();

                         }                

         });

     }

     public void setLOCategories(List<LoCategoryInfo> categories){

         loCategoryBuilder.setValue(categories);

     }

     public List<LoCategoryInfo> getLoCategories(){

         return loCategoryBuilder.getValue();

     }

     public String getLOText(){

         return this.loTextArea.getText();

     }

     public void setLOText(String value){

         this.loTextArea.setText(value);

     }

     public Data getMetaInfoData() {

         return metaInfoData;

     }

     public void setMetaInfoData(Data metaInfoData) {

         this.metaInfoData = metaInfoData;

     }

     @Override

         public HandlerRegistration addSelectionChangeHandler(SelectionChangeHandler handler) {

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

     }

     public boolean hasChangeHandler(){

             return this.getHandlerCount(SelectionChangeEvent.getType()) > 0;

     }

     private void fireChangeEvent(){

             SelectionChangeEvent.fire(this);

     }

     @Override

     protected void onEnsureDebugId(String baseID) {

         super.onEnsureDebugId(baseID);

         loTextArea.ensureDebugId(baseID);

         loCategoryBuilder.ensureDebugId(baseID);

     }

 }