/*
 * 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.Toolkit;
import java.awt.event.ActionEvent;
import java.util.HashSet;
import java.util.Set;

import org.apache.jmeter.exceptions.IllegalUserActionException;
import org.apache.jmeter.gui.GuiPackage;
import org.apache.jmeter.gui.tree.JMeterTreeListener;
import org.apache.jmeter.gui.tree.JMeterTreeNode;
import org.apache.jmeter.gui.util.MenuFactory;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;

/**
 * Places a copied JMeterTreeNode under the selected node.
 * 
 */
public class Paste extends AbstractAction {
	
	private static final Logger log = LoggingManager.getLoggerForClass();

	private static final Set commands = new HashSet();

	static {
		commands.add(ActionNames.PASTE);
	}

	/**
	 * @see Command#getActionNames()
	 */
	public Set getActionNames() {
		return commands;
	}

	/**
	 * @see Command#doAction(ActionEvent)
	 */
	public void doAction(ActionEvent e) {
		JMeterTreeNode draggedNodes[] = Copy.getCopiedNodes();
		JMeterTreeListener treeListener = GuiPackage.getInstance().getTreeListener();
		JMeterTreeNode currentNode = treeListener.getCurrentNode();
		if (MenuFactory.canAddTo(currentNode, draggedNodes)) {
			for (int i = 0; i < draggedNodes.length; i++) {
				if (draggedNodes[i] != null) {
                    addNode(currentNode, draggedNodes[i]);
				}
			}
		} else {
			Toolkit.getDefaultToolkit().beep();
		}
		GuiPackage.getInstance().getMainFrame().repaint();
	}
    
    private void addNode(JMeterTreeNode parent, JMeterTreeNode node) {
        try {
            // Add this node
            JMeterTreeNode newNode = GuiPackage.getInstance().getTreeModel().addComponent(node.getTestElement(), parent);
            // Add all the child nodes of the node we are adding
            for(int i = 0; i < node.getChildCount(); i++) {
                addNode(newNode, (JMeterTreeNode)node.getChildAt(i));
            }
        }
        catch (IllegalUserActionException iuae) {
            log.error("", iuae); // $NON-NLS-1$
            JMeterUtils.reportErrorToUser(iuae.getMessage());
        }
    }
}
