/**
    * Copyright 2005-2013 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.opensource.org/licenses/ecl2.php
    *
   * 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.core.krms;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.component.DataBinding;
  import org.kuali.rice.krad.uif.container.CollectionGroup;
  import org.kuali.rice.krad.uif.container.Group;
  import org.kuali.rice.krad.uif.container.collections.LineBuilderContext;
  import org.kuali.rice.krad.uif.element.Action;
  import org.kuali.rice.krad.uif.element.Message;
  import org.kuali.rice.krad.uif.field.Field;
  import org.kuali.rice.krad.uif.field.FieldGroup;
  import org.kuali.rice.krad.uif.layout.StackedLayoutManager;
  import org.kuali.rice.krad.uif.layout.StackedLayoutManagerBase;
  import org.kuali.rice.krad.uif.lifecycle.ViewLifecycleUtils;
  import org.kuali.rice.krad.uif.util.ComponentUtils;
  import org.kuali.rice.krad.uif.util.ObjectPropertyUtils;
  import org.kuali.rice.krad.uif.view.ViewModel;
  import org.kuali.rice.krad.util.KRADUtils;
  import org.kuali.rice.krad.web.form.UifFormBase;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author Kuali Student Team
   */
  public class TreeNodeStackedLayoutManager extends StackedLayoutManagerBase {
  
      @Override
      public void buildLine(LineBuilderContext lineBuilderContext) {
          super.buildLine(lineBuilderContext);
  
          if (lineBuilderContext.isAddLine()) {
              String nodePath = this.getNodePath(lineBuilderContext.getCollectionGroup().getContext());
              if (nodePath != null) {
                  for (Group group : this.getStackedGroups()) {
                      //Set the nodepath on the add line group so that progressive rendering can use the #np
                      ComponentUtils.pushObjectToContext(group, UifConstants.ContextVariableNames.NODE_PATH, nodePath);
                  }
              }
          }
  
      }
  
      private String getNodePath(Map<String, Object> context) {
          if (context.containsKey(UifConstants.ContextVariableNames.NODE_PATH)) {
              return (String) context.get(UifConstants.ContextVariableNames.NODE_PATH);
  
          } else if (context.containsKey(UifConstants.ContextVariableNames.PARENT)) {
              Component parent = (Component) context.get(UifConstants.ContextVariableNames.PARENT);
              return this.getNodePath(parent.getContext());
          }
          return null;
      }
  
  }