/* 
 * Copyright 2003,2004,2005 Colin Crist
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-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 hermes.swing.actions;

import hermes.browser.IconCache;
import hermes.browser.components.BrowserTree;
import hermes.browser.model.TreeUtils;
import hermes.browser.model.tree.HermesTreeNode;

import java.awt.event.ActionEvent;

import javax.swing.Action;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.TreePath;

/**
 * @author colincrist@hermesjms.com
 * @version $Id$
 */

public class CascadeBrowserTreeAction extends ActionSupport
{
   /**
	 * 
	 */
	private static final long serialVersionUID = -4225976230120661015L;
private BrowserTree browserTree;

   public CascadeBrowserTreeAction(BrowserTree browserTree)
   {
      this.browserTree = browserTree;

      putValue(Action.NAME, "Cascade/Collapse");
      putValue(Action.SHORT_DESCRIPTION, "Cascade or collapse the session tree.");
      putValue(Action.SMALL_ICON, IconCache.getIcon("hermes.collapse.cf"));
      setEnabled(false);

      browserTree.getSelectionModel().addTreeSelectionListener(new TreeSelectionListener()
      {
         public void valueChanged(TreeSelectionEvent e)
         {
            CascadeBrowserTreeAction.this.setEnabled(e.getPath() != null && TreeUtils.pathContains(e.getPaths(), HermesTreeNode.class));
         }
      });
   }

   public void actionPerformed(ActionEvent e)
   {
      final TreePath[] paths = browserTree.getSelectionPaths();

      for (final TreePath path : paths)
      {
         for (int j = 0; j < path.getPathCount(); j++)
         {
            if (path.getPath()[j] instanceof HermesTreeNode)
            {
               HermesTreeNode node = (HermesTreeNode) path.getPath()[j];
               node.setCascadeNamespace(!node.isCascadeNamespace());

               TreePath cascadeFrom = path;

               while (!(cascadeFrom.getLastPathComponent() instanceof HermesTreeNode))
               {
                  cascadeFrom = path.getParentPath();
               }

               TreeUtils.expandFully(browserTree, cascadeFrom);
            }
         }
      }
   }
}