/*
 * 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.timers.gui;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import org.apache.jmeter.gui.util.FocusRequester;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.timers.RandomTimer;
import org.apache.jmeter.timers.UniformRandomTimer;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.gui.layout.VerticalLayout;

/**
 * Implementation of a uniform random timer.
 * 
 */
public class UniformRandomTimerGui extends AbstractTimerGui {

	// TODO - are these gui item names needed?
	private static final String DELAY_FIELD = "Delay Field";

	private static final String RANGE_FIELD = "Range Field";

	private static final String DEFAULT_DELAY = "0"; // $NON-NLS-1$

	private static final String DEFAULT_RANGE = "100.0";// $NON-NLS-1$

	private JTextField delayField;

	private JTextField rangeField;

	/**
	 * No-arg constructor.
	 */
	public UniformRandomTimerGui() {
		init();
	}

	/**
	 * Handle an error.
	 * 
	 * @param e
	 *            the Exception that was thrown.
	 * @param thrower
	 *            the JComponent that threw the Exception.
	 */
	public static void error(Exception e, JComponent thrower) {
		JOptionPane.showMessageDialog(thrower, e, "Error", JOptionPane.ERROR_MESSAGE);
	}

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

	/**
	 * Create the test element underlying this GUI component.
	 * 
	 * @see org.apache.jmeter.gui.JMeterGUIComponent#createTestElement()
	 */
	public TestElement createTestElement() {
		RandomTimer timer = new UniformRandomTimer();
		modifyTestElement(timer);
		return timer;
	}

	/**
	 * Modifies a given TestElement to mirror the data in the gui components.
	 * 
	 * @see org.apache.jmeter.gui.JMeterGUIComponent#modifyTestElement(TestElement)
	 */
	public void modifyTestElement(TestElement timer) {
		this.configureTestElement(timer);
		((RandomTimer) timer).setDelay(delayField.getText());
		((RandomTimer) timer).setRange(rangeField.getText());
	}

	/**
	 * Configure this GUI component from the underlying TestElement.
	 * 
	 * @see org.apache.jmeter.gui.JMeterGUIComponent#configure(TestElement)
	 */
	public void configure(TestElement el) {
		super.configure(el);
		delayField.setText(el.getPropertyAsString(RandomTimer.DELAY));
		rangeField.setText(el.getPropertyAsString(RandomTimer.RANGE));
	}

	/**
	 * Initialize this component.
	 */
	private void init() {
		setLayout(new VerticalLayout(5, VerticalLayout.BOTH));
		setBorder(makeBorder());

		add(makeTitlePanel());

		// THREAD DELAY PROPERTIES
		JPanel threadDelayPropsPanel = new JPanel();
		threadDelayPropsPanel.setLayout(new VerticalLayout(5, VerticalLayout.LEFT));
		threadDelayPropsPanel.setBorder(BorderFactory.createTitledBorder(JMeterUtils
				.getResString("thread_delay_properties"))); //$NON-NLS-1$

		// DELAY DEVIATION
		Box delayDevPanel = Box.createHorizontalBox();
		delayDevPanel.add(new JLabel(JMeterUtils.getResString("uniform_timer_range"))); //$NON-NLS-1$
		delayDevPanel.add(Box.createHorizontalStrut(5));

		rangeField = new JTextField(6);
		rangeField.setText(DEFAULT_RANGE);
		rangeField.setName(RANGE_FIELD);
		delayDevPanel.add(rangeField);

		threadDelayPropsPanel.add(delayDevPanel);

		// AVG DELAY
		Box avgDelayPanel = Box.createHorizontalBox();
		avgDelayPanel.add(new JLabel(JMeterUtils.getResString("uniform_timer_delay"))); //$NON-NLS-1$
		avgDelayPanel.add(Box.createHorizontalStrut(5));

		delayField = new JTextField(6);
		delayField.setText(DEFAULT_DELAY);
		delayField.setName(DELAY_FIELD);
		avgDelayPanel.add(delayField);

		threadDelayPropsPanel.add(avgDelayPanel);

		add(threadDelayPropsPanel);

		// Set the initial focus to the range field
		new FocusRequester(rangeField);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.apache.jmeter.gui.JMeterGUIComponent#clearGui()
	 */
	public void clearGui() {
		rangeField.setText(DEFAULT_RANGE);
		delayField.setText(DEFAULT_DELAY);
		super.clearGui();
	}
}
