/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.jmeter.gui.action;

import java.awt.event.ActionEvent;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JTree;

import org.apache.jmeter.gui.GuiPackage;

/**
 * Processes the Collapse All and Expand All options.
 * 
 */
public class CollapseExpand implements Command {

	private static final Set commands = new HashSet();

	static {
		commands.add(ActionNames.COLLAPSE_ALL);
		commands.add(ActionNames.EXPAND_ALL);
	}

	/**
	 * Constructor for the Close object.
	 */
	public CollapseExpand() {
	}

	/**
	 * Gets the ActionNames attribute of the Close object.
	 * 
	 * @return the ActionNames value
	 */
	public Set getActionNames() {
		return commands;
	}

	/**
	 * This method performs the actual command processing.
	 * 
	 * @param e
	 *            the generic UI action event
	 */
	public void doAction(ActionEvent e) {
		boolean collapse=ActionNames.COLLAPSE_ALL.equals(e.getActionCommand());
		GuiPackage guiInstance = GuiPackage.getInstance();
		JTree jTree = guiInstance.getMainFrame().getTree();
		if (collapse){
			for (int i = jTree.getRowCount() - 1; i >= 0; i--) {
		         jTree.collapseRow(i);
		    }
			return;
		}
	   for(int i = 0; i < jTree.getRowCount(); i++) {
			   jTree.expandRow(i);
	   }
	}
}
