/*

 * 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.protocol.java.control.gui;

import java.awt.BorderLayout;

import java.util.Arrays;

import java.util.Properties;

import java.util.Set;

import javax.swing.Box;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import org.apache.jmeter.protocol.java.sampler.BSFSampler;

import org.apache.jmeter.samplers.gui.AbstractSamplerGui;

import org.apache.jmeter.testelement.TestElement;

import org.apache.jmeter.util.JMeterUtils;

public class BSFSamplerGui extends AbstractSamplerGui {

    private static final long serialVersionUID = 240L;

    private JTextArea scriptField;

    private JComboBox langField;// Language

    private JTextField filename;// script file name (if present)

    private JTextField parameters;// parameters to pass to script file (or script)

    public BSFSamplerGui() {

        init();

    }

    @Override

    public void configure(TestElement element) {

        super.configure(element);

        BSFSampler sampler = (BSFSampler) element;

        scriptField.setText(sampler.getScript());

        langField.setSelectedItem(sampler.getScriptLanguage());

        filename.setText(sampler.getFilename());

        parameters.setText(sampler.getParameters());

    }

    public TestElement createTestElement() {

        BSFSampler sampler = new BSFSampler();

        modifyTestElement(sampler);

        return sampler;

    }

    /**

     * Modifies a given TestElement to mirror the data in the gui components.

     *

     * @see org.apache.jmeter.gui.JMeterGUIComponent#modifyTestElement(TestElement)

     */

    public void modifyTestElement(TestElement te) {

        te.clear();

        this.configureTestElement(te);

        BSFSampler sampler = (BSFSampler) te;

        sampler.setFilename(filename.getText());

        sampler.setScriptLanguage((String) langField.getSelectedItem());

        sampler.setParameters(parameters.getText());

        sampler.setScript(scriptField.getText());

    }

    /**

     * Implements JMeterGUIComponent.clearGui

     */

    @Override

    public void clearGui() {

        super.clearGui();

        scriptField.setText(""); //$NON-NLS-1$

        langField.setSelectedIndex(0);

        filename.setText(""); //$NON-NLS-1$

        parameters.setText(""); //$NON-NLS-1$

    }

    public String getLabelResource() {

        return "bsf_sampler_title"; // $NON-NLS-1$

    }

    private void init() {

        setLayout(new BorderLayout(0, 5));

        setBorder(makeBorder());

        Box box = Box.createVerticalBox();

        box.add(makeTitlePanel());

        box.add(createLanguagePanel());

        box.add(createFilenamePanel());

        box.add(createParameterPanel());

        add(box, BorderLayout.NORTH);

        JPanel panel = createScriptPanel();

        add(panel, BorderLayout.CENTER);

        // Don't let the input field shrink too much

        add(Box.createVerticalStrut(panel.getPreferredSize().height), BorderLayout.WEST);

    }

    private JPanel createParameterPanel() {

        JLabel label = new JLabel(JMeterUtils.getResString("bsf_script_parameters")); // $NON-NLS-1$

        parameters = new JTextField(10);

        label.setLabelFor(parameters);

        JPanel parameterPanel = new JPanel(new BorderLayout(5, 0));

        parameterPanel.add(label, BorderLayout.WEST);

        parameterPanel.add(parameters, BorderLayout.CENTER);

        return parameterPanel;

    }

    private JPanel createFilenamePanel()// TODO ought to be a FileChooser ...

    {

        JLabel label = new JLabel(JMeterUtils.getResString("bsf_script_file")); // $NON-NLS-1$

        filename = new JTextField(10);

        label.setLabelFor(filename);

        JPanel filenamePanel = new JPanel(new BorderLayout(5, 0));

        filenamePanel.add(label, BorderLayout.WEST);

        filenamePanel.add(filename, BorderLayout.CENTER);

        return filenamePanel;

    }

    private JPanel createLanguagePanel() {

        JLabel label = new JLabel(JMeterUtils.getResString("bsf_script_language")); // $NON-NLS-1$

        Properties p = JMeterUtils.loadProperties("org/apache/bsf/Languages.properties"); // $NON-NLS-1$

        // We have added Jexl in BSFSampler.

        p.put("jexl", ""); // $NON-NLS-1$

        Set<Object> keySet = p.keySet();

        // TODO - perhaps weed out ones which don't exist?

        String [] items = keySet.toArray(new String[keySet.size()]);

        Arrays.sort(items);

        langField = new JComboBox(items);

        langField.setEditable(true);

        label.setLabelFor(langField);

        JPanel langPanel = new JPanel(new BorderLayout(5, 0));

        langPanel.add(label, BorderLayout.WEST);

        langPanel.add(langField, BorderLayout.CENTER);

        return langPanel;

    }

    private JPanel createScriptPanel() {

        scriptField = new JTextArea();

        scriptField.setRows(4);

        scriptField.setLineWrap(true);

        scriptField.setWrapStyleWord(true);

        JLabel label = new JLabel(JMeterUtils.getResString("bsf_script")); // $NON-NLS-1$

        label.setLabelFor(scriptField);

        JPanel panel = new JPanel(new BorderLayout());

        panel.add(label, BorderLayout.NORTH);

        panel.add(new JScrollPane(scriptField), BorderLayout.CENTER);

        return panel;

    }

}