/*
 * 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.visualizers;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;

import org.apache.jmeter.config.ConfigTestElement;
import org.apache.jmeter.config.gui.AbstractConfigGui;
import org.apache.jmeter.gui.UnsharedComponent;
import org.apache.jmeter.gui.util.MenuFactory;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.gui.ObjectTableModel;
import org.apache.jorphan.reflect.Functor;

public class PropertyControlGui extends AbstractConfigGui
    implements ActionListener, UnsharedComponent {

	private static final long serialVersionUID = 1L;

	private static final String COLUMN_NAMES_0 = JMeterUtils.getResString("name"); // $NON-NLS-1$

	private static final String COLUMN_NAMES_1 = JMeterUtils.getResString("value"); // $NON-NLS-1$

	// TODO: add and delete not currently supported
	private static final String ADD = "add"; // $NON-NLS-1$

	private static final String DELETE = "delete"; // $NON-NLS-1$

	private static final String SYSTEM = "system"; // $NON-NLS-1$

	private static final String JMETER = "jmeter"; // $NON-NLS-1$

	private JCheckBox systemButton = new JCheckBox("System");
	private JCheckBox jmeterButton = new JCheckBox("JMeter");
	
	private JLabel tableLabel = new JLabel("Properties");

	/** The table containing the list of arguments. */
	private transient JTable table;

	/** The model for the arguments table. */
	protected transient ObjectTableModel tableModel;

	/** A button for adding new arguments to the table. */
	private JButton add;

	/** A button for removing arguments from the table. */
	private JButton delete;

	public PropertyControlGui() {
		super();
		init();
	}

	public String getLabelResource() {
		return "property_visualiser_title"; // $NON-NLS-1$
	}

	public Collection getMenuCategories() {
		return Arrays.asList(new String[] { MenuFactory.NON_TEST_ELEMENTS });
	}

	public void actionPerformed(ActionEvent action) {
		String command = action.getActionCommand();
		if (ADD.equals(command)){
			return;
		}
		if (DELETE.equals(command)){
			return;
		}
		if (SYSTEM.equals(command)){
			setUpData();
			return;
		}
		if (JMETER.equals(command)){
			setUpData();
			return;
		}

	}

	public void add(SampleResult sample) {
	}

	public TestElement createTestElement() {
		TestElement el = new ConfigTestElement();// TODO replace with simpler version?
		modifyTestElement(el);
		return el;
	}
	public void configure(TestElement element) {
	    super.configure(element);
	    setUpData();
	}
	
	private void setUpData(){
		tableModel.clearData();
		Properties p=null;
		if (systemButton.isSelected()){
			p = System.getProperties();
		}
		if (jmeterButton.isSelected()) {
			p = JMeterUtils.getJMeterProperties();
		}
		if (p == null) {
		    return;
		}
		Set s = p.entrySet();
		ArrayList al = new ArrayList(s);
		Collections.sort(al, new Comparator(){
			public int compare(Object o1, Object o2) {
				String m1,m2;
				m1=(String)((Map.Entry)o1).getKey();
				m2=(String)((Map.Entry)o2).getKey();
				return m1.compareTo(m2);
			}
		});
		Iterator i = al.iterator();
		while(i.hasNext()){
			tableModel.addRow(i.next());
		}
	    
	}

	public void modifyTestElement(TestElement element) {
		configureTestElement(element);
	}
	private Component makeMainPanel() {
		initializeTableModel();
		table = new JTable(tableModel);
		table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		return makeScrollPane(table);
	}

	/**
	 * Create a panel containing the title label for the table.
	 * 
	 * @return a panel containing the title label
	 */
	private Component makeLabelPanel() {
		JPanel labelPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
		ButtonGroup bg = new ButtonGroup();
		bg.add(systemButton);
		bg.add(jmeterButton);
		jmeterButton.setSelected(true);
		systemButton.setActionCommand(SYSTEM);
		jmeterButton.setActionCommand(JMETER);
		systemButton.addActionListener(this);
		jmeterButton.addActionListener(this);
		
		labelPanel.add(systemButton);
		labelPanel.add(jmeterButton);
		labelPanel.add(tableLabel);
		return labelPanel;
	}

	/**
	 * Create a panel containing the add and delete buttons.
	 * 
	 * @return a GUI panel containing the buttons
	 */
	private JPanel makeButtonPanel() {// Not currently used
		add = new JButton(JMeterUtils.getResString("add")); // $NON-NLS-1$
		add.setActionCommand(ADD);
		add.setEnabled(true);

		delete = new JButton(JMeterUtils.getResString("delete")); // $NON-NLS-1$
		delete.setActionCommand(DELETE);

		JPanel buttonPanel = new JPanel();
		buttonPanel.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 10));
 		add.addActionListener(this);
		delete.addActionListener(this);
		buttonPanel.add(add);
		buttonPanel.add(delete);
		return buttonPanel;
	}

	/**
	 * Initialize the components and layout of this component.
	 */
	private void init() {
		JPanel p = this;

			setLayout(new BorderLayout(0, 5));
			setBorder(makeBorder());
			add(makeTitlePanel(), BorderLayout.NORTH);
			p = new JPanel();

		p.setLayout(new BorderLayout());

		p.add(makeLabelPanel(), BorderLayout.NORTH);
		p.add(makeMainPanel(), BorderLayout.CENTER);
		// Force a minimum table height of 70 pixels
		p.add(Box.createVerticalStrut(70), BorderLayout.WEST);
		//p.add(makeButtonPanel(), BorderLayout.SOUTH);

		add(p, BorderLayout.CENTER);
		table.revalidate();
	}
	private void initializeTableModel() {
		tableModel = new ObjectTableModel(new String[] { COLUMN_NAMES_0, COLUMN_NAMES_1 },
				new Functor[] {
				new Functor(Map.Entry.class, "getKey"), // $NON-NLS-1$
				new Functor(Map.Entry.class, "getValue") },  // $NON-NLS-1$
				new Functor[] {
			    null, //new Functor("setName"), // $NON-NLS-1$
				new Functor(Map.Entry.class,"setValue", new Class[] { Object.class }) // $NON-NLS-1$
			}, 
				new Class[] { String.class, String.class });
	}
}