/**
    * This file Copyright (c) 2013-2015 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.workbench.tree;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnector;
  import info.magnolia.ui.vaadin.integration.contentconnector.JcrContentConnector;
  import info.magnolia.ui.workbench.column.definition.ColumnDefinition;
  import info.magnolia.ui.workbench.definition.WorkbenchDefinition;
  import info.magnolia.ui.workbench.event.ActionEvent;
  import info.magnolia.ui.workbench.list.ListPresenter;
  import info.magnolia.ui.workbench.tree.drop.DropConstraint;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import javax.inject.Inject;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.data.Container;
  import com.vaadin.data.Property;
  
  /**
   * The TreePresenter is responsible for creating, configuring and updating a tree of items according to the workbench definition.
   */
  public class TreePresenter extends ListPresenter implements TreeView.Listener {
  
      private static final String SAVE_ACTION_NAME = "saveItemProperty";
      private static final Logger log = LoggerFactory.getLogger(TreePresenter.class);
  
      @Inject
      public TreePresenter(TreeView view, ComponentProvider componentProvider) {
          super(view, componentProvider);
      }
  
      @Override
      public TreeView start(WorkbenchDefinition workbenchDefinition, EventBus eventBus, String viewTypeName, ContentConnector contentConnector) {
          TreeView view = (TreeView) super.start(workbenchDefinition, eventBus, viewTypeName, contentConnector);
  
          // inplace-editing
          if (workbenchDefinition.isEditable()) {
  
              List<Object> editableColumns = new ArrayList<Object>();
  
              Iterator<ColumnDefinition> it = getColumnsIterator();
              while (it.hasNext()) {
                  ColumnDefinition column = it.next();
  
                  String propertyId = column.getPropertyName();
                  if (column.isEditable()) {
                      editableColumns.add(propertyId);
                  }
              }
              view.setEditableColumns(editableColumns.toArray());
              view.setEditable(true);
          }
  
          // Drag and Drop
          Class<? extends DropConstraint> dropConstraintClass = workbenchDefinition.getDropConstraintClass();
          if (dropConstraintClass != null) {
              final DropConstraint constraint = getComponentProvider().newInstance(dropConstraintClass);
              final MoveHandler moveHandler = getComponentProvider().newInstance(MoveHandler.class, view.asVaadinComponent(), constraint);
              view.setDragAndDropHandler(moveHandler.asDropHandler());
              log.debug("Set following drop container {} to the treeTable", dropConstraintClass.getName());
         }
 
         return view;
     }
 
 
     public void disableDragAndDrop() {
         ((TreeView) view).setDragAndDropHandler(null);
     }
 
     // TREE VIEW LISTENER IMPL
 
     @Override
     public void onItemEdited(Object itemId, Object propertyId, Property<?> propertyDataSource) {
         if (itemId != null && propertyId != null) {
             eventBus.fireEvent(new ActionEvent(SAVE_ACTION_NAME, itemId, propertyId, propertyDataSource));
         }
 
         // Clear preOrder cache of itemIds in case node was renamed
         refresh();
     }
 
     @Override
     public void expand(Object itemId) {
         view.expand(itemId);
     }
 
     @Override
     protected Container.Hierarchical createContainer() {
         return new HierarchicalJcrContainer(((JcrContentConnector)contentConnector).getContentConnectorDefinition());
     }
 }