/*
 * 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.
 *  
 */

/*
 * Created on Sep 15, 2004
 */
package org.apache.jmeter.gui;

import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JDialog;
import javax.swing.JPanel;

import org.apache.jmeter.samplers.SampleSaveConfiguration;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jorphan.reflect.Functor;
import org.apache.log.Logger;

/**
 * Generates Configure pop-up dialogue for Listeners from all methods in SampleSaveConfiguration
 * with the signature "boolean saveXXX()". 
 * There must be a corresponding "void setXXX(boolean)" method, and a property save_XXX which is
 * used to name the field on the dialogue.
 * 
 */
public class SavePropertyDialog extends JDialog implements ActionListener {

    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final long serialVersionUID = 232L;

	private static final Map functors = new HashMap();

    private static final String NAME_SAVE_PFX   = "save";  // $NON-NLS-1$ i.e. boolean saveXXX()
    private static final String NAME_SET_PREFIX = "set";   // $NON-NLS-1$ i.e. void setXXX(boolean)
    private static final String RESOURCE_PREFIX = "save_"; // $NON-NLS-1$ e.g. save_XXX property
    private static final int    NAME_SAVE_PFX_LEN = NAME_SAVE_PFX.length();

    private SampleSaveConfiguration saveConfig;

    public SavePropertyDialog(){
        log.warn("Constructor only intended for use in testing"); // $NON-NLS-1$
    }
	/**
	 * @param owner
	 * @param title
	 * @param modal
	 * @throws java.awt.HeadlessException
	 */
	public SavePropertyDialog(Frame owner, String title, boolean modal, SampleSaveConfiguration s)
	// throws HeadlessException
	{
		super(owner, title, modal);
		saveConfig = s;
		log.debug("SampleSaveConfiguration = " + saveConfig);// $NON-NLS-1$
		dialogInit();
	}

	private int countMethods(Method[] m) {
		int count = 0;
		for (int i = 0; i < m.length; i++) {
			if (m[i].getName().startsWith(NAME_SAVE_PFX)) {
				count++;
            }
		}
		return count;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.swing.JDialog#dialogInit()
	 */
	protected void dialogInit() {
		if (saveConfig != null) {
			super.dialogInit();
			this.getContentPane().setLayout(new BorderLayout());
			Method[] methods = SampleSaveConfiguration.class.getMethods();
			int x = (countMethods(methods) / 3) + 1;
			log.debug("grid panel is " + 3 + " by " + x);
			JPanel checkPanel = new JPanel(new GridLayout(x, 3));
			for (int i = 0; i < methods.length; i++) {
				String name = methods[i].getName();
				if (name.startsWith(NAME_SAVE_PFX) && methods[i].getParameterTypes().length == 0) {
					try {
						name = name.substring(NAME_SAVE_PFX_LEN);
						JCheckBox check = new JCheckBox(
                                JMeterUtils.getResString(RESOURCE_PREFIX + name)// $NON-NLS-1$
                                ,((Boolean) methods[i].invoke(saveConfig, new Object[0])).booleanValue());
						checkPanel.add(check, BorderLayout.NORTH);
						check.addActionListener(this);
                        String actionCommand = NAME_SET_PREFIX + name; // $NON-NLS-1$
						check.setActionCommand(actionCommand);
                        if (!functors.containsKey(actionCommand)) {
							functors.put(actionCommand, new Functor(actionCommand));
						}
					} catch (Exception e) {
						log.warn("Problem creating save config dialog", e);
					}
				}
			}
			getContentPane().add(checkPanel, BorderLayout.NORTH);
			JButton exit = new JButton(JMeterUtils.getResString("done")); // $NON-NLS-1$
			this.getContentPane().add(exit, BorderLayout.SOUTH);
			exit.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					dispose();
				}
			});
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
	 */
	public void actionPerformed(ActionEvent e) {
		String action = e.getActionCommand();
		Functor f = (Functor) functors.get(action);
		f.invoke(saveConfig, new Object[] {
                Boolean.valueOf(((JCheckBox) e.getSource()).isSelected()) });
	}

	/**
	 * @return Returns the saveConfig.
	 */
	public SampleSaveConfiguration getSaveConfig() {
		return saveConfig;
	}

	/**
	 * @param saveConfig
	 *            The saveConfig to set.
	 */
	public void setSaveConfig(SampleSaveConfiguration saveConfig) {
		this.saveConfig = saveConfig;
	}
}
