/*
 * 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.Box;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.timers.ConstantTimer;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.gui.layout.VerticalLayout;

/**
 * The GUI for ConstantTimer.
 * 
 */
public class ConstantTimerGui extends AbstractTimerGui {
	/**
	 * The default value for the delay.
	 */
	private static final String DEFAULT_DELAY = "300";

	private static final String DELAY_FIELD = "Delay Field";

	private JTextField delayField;

	/**
	 * No-arg constructor.
	 */
	public ConstantTimerGui() {
		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 "constant_timer_title"; // $NON-NLS-1$
	}

	/**
	 * Create the test element underlying this GUI component.
	 * 
	 * @see org.apache.jmeter.gui.JMeterGUIComponent#createTestElement()
	 */
	public TestElement createTestElement() {
		ConstantTimer timer = new ConstantTimer();
		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);
		((ConstantTimer) timer).setDelay(delayField.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(((ConstantTimer) el).getDelay());
	}

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

		setBorder(makeBorder());
		add(makeTitlePanel());

		Box delayPanel = Box.createHorizontalBox();
		JLabel delayLabel = new JLabel(JMeterUtils.getResString("constant_timer_delay"));//$NON-NLS-1$
		delayPanel.add(delayLabel);

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

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