/**
    * 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 java.util.Iterator;
  
  import org.kuali.student.common.ui.client.configurable.mvc.multiplicity.DisplayMultiplicityComposite;
  import org.kuali.student.common.ui.client.configurable.mvc.multiplicity.MultiplicityComposite;
  import org.kuali.student.common.ui.client.configurable.mvc.multiplicity.MultiplicityItem;
  import org.kuali.student.common.ui.client.mvc.DataModel;
  import org.kuali.student.core.assembly.data.Data;
  import org.kuali.student.core.assembly.data.QueryPath;
  import org.kuali.student.core.assembly.data.Data.Property;
  
  /**
   * This just goes through each item in the multiplicity composite and calls it's binding
   * 
   * @author Kuali Student Team
   */
  
  /**
   * @deprecated
   */
  public class MultiplicityCompositeBinding extends ModelWidgetBindingSupport<MultiplicityComposite> {
      public static MultiplicityCompositeBinding INSTANCE = new MultiplicityCompositeBinding();
  
      private MultiplicityCompositeBinding() {};
  
      /**
       * @see org.kuali.student.common.ui.client.configurable.mvc.binding.ModelWidgetBindingSupport#setModelValue(java.lang.Object,
       *      org.kuali.student.common.ui.client.mvc.DataModel, java.lang.String)
       */
      @Override
      public void setModelValue(MultiplicityComposite mcWidget, DataModel model, String path) {
          for (MultiplicityItem item : mcWidget.getItems()) {
              MultiplicityItemBinding.INSTANCE.setModelValue(item, model, path);
          }
          for (MultiplicityItem item : mcWidget.getRemovedItems()) {
              //Check flag to add model binding for only those elements that are either added to the DB or 
              // loading frm the DB. 
              if(item.isCreated()==false){
                  MultiplicityItemBinding.INSTANCE.setModelValue(item, model, path);
              }
          }
      }
  
      /**
       * @see org.kuali.student.common.ui.client.configurable.mvc.binding.ModelWidgetBindingSupport#setWidgetValue(java.lang.Object,
       *      org.kuali.student.common.ui.client.mvc.DataModel, java.lang.String)
       */
      @Override
      public void setWidgetValue(MultiplicityComposite mcWidget, DataModel model, String path) {
          mcWidget.clear();
  
          QueryPath qPath = QueryPath.parse(path);
          Data data = null;
          if(model!=null){
          	data = model.get(qPath);
          }
  
          if (data != null) {
              Iterator<Property> itr = data.iterator();
              while (itr.hasNext()) {
                  Property p = (Property) itr.next();
  
                  if (p.getKey() instanceof Integer && !isItemDeleted(model, path, (Integer)p.getKey(), mcWidget)) {                
                      MultiplicityItem item = mcWidget.addItem();
                      item.setCreated(false);
                      item.setItemKey((Integer) p.getKey());
                      MultiplicityItemBinding.INSTANCE.setWidgetValue(item, model, path);
                  } else {
                  	mcWidget.incrementItemKey();
                  }
              }
          }
      }
      
      /**
       * Checks to see if an item at the given index in the multiplicity has been deleted
       * 
       * @param model
       * @param path
       * @param index
       */
      public boolean isItemDeleted(DataModel model, String path, Integer index, MultiplicityComposite mcWidget){
      	boolean isDeleted = false;
     	
     	// If this is a read only widget deletions aren't possible so no point checking
     	if (!(mcWidget instanceof DisplayMultiplicityComposite)) {
 
     		QueryPath runtimeDeletedPath = QueryPath.concat(path, String.valueOf(index), MultiplicityItemBinding.RT_DELETED);
 
     		Boolean runtimeDeleted = model.get(runtimeDeletedPath);
     		if (runtimeDeleted != null){
     			isDeleted = runtimeDeleted;
     		}
     		return isDeleted;
     	}
   	
     	return isDeleted;
     }
 
 
 }