/**

  * 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.configurable.mvc.binding;

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

 import org.kuali.student.common.ui.client.configurable.mvc.multiplicity.MultiplicityGroupItem;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.Section;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.SectionBinding;

 import org.kuali.student.common.ui.client.mvc.DataModel;

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

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

 /**

  * This binding simply adds an index key to the multiplicity item's parent path and then calls the binding ModelWidgetBinding

  * of the underlying multiplicity item's widget.

  *

  * @author Kuali Student Team

  */

 public class MultiplicityGroupItemBinding extends ModelWidgetBindingSupport<MultiplicityGroupItem> {

     public static MultiplicityGroupItemBinding INSTANCE = new MultiplicityGroupItemBinding();

     protected static final String RT_CREATED = "_runtimeData" + QueryPath.getPathSeparator() + "created";

     protected static final String RT_UPDATED = "_runtimeData" + QueryPath.getPathSeparator() + "updated";

     protected static final String RT_DELETED = "_runtimeData" + QueryPath.getPathSeparator() + "deleted";

     private MultiplicityGroupItemBinding() {};

     /**

      * @see ModelWidgetBindingSupport#setModelValue(Object,

      *      org.kuali.student.common.ui.client.mvc.DataModel, String)

      */

     @Override

     public void setModelValue(MultiplicityGroupItem multiplicityItem, DataModel model, String path) {

         String itemPath = QueryPath.concat(path, String.valueOf(multiplicityItem.getItemKey())).toString();

             String itemRuntimePath = itemPath;

         Widget widget = multiplicityItem.getItemWidget();

         boolean multiplicityItemIsDirty = false;

         if (widget instanceof Section) {                

                 if (((Section)widget).isDirty()){

                         //Only update model if multiplicity section is dirty.

                         itemPath = "";

                     SectionBinding.INSTANCE.setModelValue((Section) widget, model, itemPath);

                     multiplicityItemIsDirty = true;

                 } 

         } else if (widget instanceof ModelWidgetBinding) {

             ((ModelWidgetBinding) widget).setModelValue(widget, model, path);

             multiplicityItemIsDirty = true;

         } else {

             GWT.log(itemPath + " has no widget binding.", null);

         }

         // Multiplicity metadata?

        if (multiplicityItemIsDirty || multiplicityItem.isDeleted()){

                 QueryPath qPath;

                 if (multiplicityItem.isCreated()) {

                     qPath = QueryPath.parse(itemRuntimePath + QueryPath.getPathSeparator() + RT_CREATED);

                 } else if (multiplicityItem.isDeleted()) {

                     qPath = QueryPath.parse(itemRuntimePath + QueryPath.getPathSeparator() + RT_DELETED);

                 } else {

                     qPath = QueryPath.parse(itemRuntimePath + QueryPath.getPathSeparator() + RT_UPDATED);

                 }

                 try {

                     Boolean oldValue = model.get(qPath);

                     Boolean newValue = true;

                     if (!nullsafeEquals(oldValue, newValue)) {

                         model.set(qPath, newValue);

                         setDirtyFlag(model, qPath);

                     }

                 } catch (IllegalArgumentException e) {

                     // model.get(qPath) will throw this exception if there is no such path

                     GWT.log("Warning: Ignoring error attempting to setValue for " + widget.getClass().getName() + " path: " + qPath, e);

                 }

        }

     }

     /**

      * @see ModelWidgetBindingSupport#setWidgetValue(Object,

      *      org.kuali.student.common.ui.client.mvc.DataModel, String)

      */

     @Override

     public void setWidgetValue(MultiplicityGroupItem multiplicityItem, DataModel model, String path) {

 //        String itemPath = path + QueryPath.getPathSeparator() + multiplicityItem.getItemKey();

         String itemPath ="";

         Widget widget = multiplicityItem.getItemWidget();

         if (widget instanceof Section) {

             SectionBinding.INSTANCE.setWidgetValue((Section) widget, model, itemPath);

         } else if (widget instanceof ModelWidgetBinding) {

             ((ModelWidgetBinding) widget).setWidgetValue(widget, model, path);

         } else {

             GWT.log(itemPath + " has no widget binding.", null);

         }

         multiplicityItem.setCreated(false);

         multiplicityItem.setCreated(false);

     }

 }