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ViewResultsFullVisualizer.java

/*
 * 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.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.ByteArrayInputStream;
import java.io.StringWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JEditorPane;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.JTree;
import javax.swing.ToolTipManager;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.ComponentView;
import javax.swing.text.Document;
import javax.swing.text.EditorKit;
import javax.swing.text.Element;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
import javax.swing.text.View;
import javax.swing.text.ViewFactory;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import org.apache.jmeter.assertions.AssertionResult;
import org.apache.jmeter.samplers.Clearable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jmeter.util.XPathUtil;
import org.apache.jmeter.visualizers.gui.AbstractVisualizer;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jorphan.util.JOrphanUtils;
import org.apache.log.Logger;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.tidy.Tidy;
import org.xml.sax.SAXException;

/**
 * Allows the tester to view the textual response from sampling an Entry. This
 * also allows to "single step through" the sampling process via a nice
 * "Continue" button.
 *
 * Created 2001/07/25
 */
00094 public class ViewResultsFullVisualizer extends AbstractVisualizer
        implements ActionListener, TreeSelectionListener, Clearable
    {

    private static final long serialVersionUID = 1L;

00100     private static final Logger log = LoggingManager.getLoggerForClass();

    // Maximum size that we will display
    private static final int MAX_DISPLAY_SIZE =
        JMeterUtils.getPropDefault("view.results.tree.max_size", 200 * 1024); // $NON-NLS-1$

    // N.B. these are not multi-threaded, so don't make it static
    private final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z"); // ISO format $NON-NLS-1$

    private static final String NL = "\n"; // $NON-NLS-1$

    private static final byte[] XML_PFX = "<?xml ".getBytes(); // $NON-NLS-1$

    public static final Color SERVER_ERROR_COLOR = Color.red;

    public static final Color CLIENT_ERROR_COLOR = Color.blue;

    public static final Color REDIRECT_COLOR = Color.green;

    private static final String TEXT_HTML = "text/html"; // $NON-NLS-1$

    private static final String HTML_COMMAND = "html"; // $NON-NLS-1$

    private static final String JSON_COMMAND = "json"; // $NON-NLS-1$

    private static final String XML_COMMAND = "xml"; // $NON-NLS-1$

    private static final String TEXT_COMMAND = "text"; // $NON-NLS-1$

    private static final String STYLE_SERVER_ERROR = "ServerError"; // $NON-NLS-1$

    private static final String STYLE_CLIENT_ERROR = "ClientError"; // $NON-NLS-1$

    private static final String STYLE_REDIRECT = "Redirect"; // $NON-NLS-1$

    private boolean textMode = true;

    private static final String ESC_CHAR_REGEX = "\\\\[\"\\\\/bfnrt]|\\\\u[0-9A-Fa-f]{4}"; // $NON-NLS-1$

    private static final String NORMAL_CHARACTER_REGEX = "[^\"\\\\]";  // $NON-NLS-1$

    private static final String STRING_REGEX = "\"(" + ESC_CHAR_REGEX + "|" + NORMAL_CHARACTER_REGEX + ")*\""; // $NON-NLS-1$

    // This 'other value' regex is deliberately weak, even accepting an empty string, to be useful when reporting malformed data.
    private static final String OTHER_VALUE_REGEX = "[^\\{\\[\\]\\}\\,]*"; // $NON-NLS-1$

    private static final String VALUE_OR_PAIR_REGEX = "((" + STRING_REGEX + "\\s*:)?\\s*(" + STRING_REGEX + "|" + OTHER_VALUE_REGEX + ")\\s*,?\\s*)"; // $NON-NLS-1$

    private static final Pattern VALUE_OR_PAIR_PATTERN = Pattern.compile(VALUE_OR_PAIR_REGEX);

    // set default command to Text
    private String command = TEXT_COMMAND;

    // Keep copies of the two editors needed
    private static final EditorKit customisedEditor = new LocalHTMLEditorKit();

    private static final EditorKit defaultHtmlEditor = JEditorPane.createEditorKitForContentType(TEXT_HTML);

    private DefaultMutableTreeNode root;

    private DefaultTreeModel treeModel;

    private JTextPane stats;

    private JEditorPane results;

    private JScrollPane resultsScrollPane;

    private JPanel resultsPane;

    private JLabel imageLabel;

    private JTextArea sampleDataField;

    private JPanel requestPane;

    private JRadioButton textButton;

    private JRadioButton htmlButton;

    private JRadioButton jsonButton;

    private JRadioButton xmlButton;

    private JCheckBox downloadAll;

    private JTree jTree;

    private JTabbedPane rightSide;

    private static final ImageIcon imageSuccess = JMeterUtils.getImage(
            JMeterUtils.getPropDefault("viewResultsTree.success",  //$NON-NLS-1$
                    "icon_success_sml.gif")); //$NON-NLS-1$

    private static final ImageIcon imageFailure = JMeterUtils.getImage(
            JMeterUtils.getPropDefault("viewResultsTree.failure",  //$NON-NLS-1$
                    "icon_warning_sml.gif")); //$NON-NLS-1$

    public ViewResultsFullVisualizer() {
        super();
        log.debug("Start : ViewResultsFullVisualizer1");
        init();
        log.debug("End : ViewResultsFullVisualizer1");
    }

00205     public void add(SampleResult res) {
        updateGui(res);
    }

00209     public String getLabelResource() {
        return "view_results_tree_title"; // $NON-NLS-1$
    }

    /**
     * Update the visualizer with new data.
     */
00216     private synchronized void updateGui(SampleResult res) {
        log.debug("Start : updateGui1");
        if (log.isDebugEnabled()) {
            log.debug("updateGui1 : sample result - " + res);
        }
        // Add sample
        DefaultMutableTreeNode currNode = new DefaultMutableTreeNode(res);
        treeModel.insertNodeInto(currNode, root, root.getChildCount());
        addSubResults(currNode, res);
        // Add any assertion that failed as children of the sample node
        AssertionResult assertionResults[] = res.getAssertionResults();
        int assertionIndex = currNode.getChildCount();
        for (int j = 0; j < assertionResults.length; j++) {
            AssertionResult item = assertionResults[j];

            if (item.isFailure() || item.isError()) {
                DefaultMutableTreeNode assertionNode = new DefaultMutableTreeNode(item);
                treeModel.insertNodeInto(assertionNode, currNode, assertionIndex++);
            }
        }

        if (root.getChildCount() == 1) {
            jTree.expandPath(new TreePath(root));
        }
        log.debug("End : updateGui1");
    }

    private void addSubResults(DefaultMutableTreeNode currNode, SampleResult res) {
        SampleResult[] subResults = res.getSubResults();

        int leafIndex = 0;

        for (int i = 0; i < subResults.length; i++) {
            SampleResult child = subResults[i];

            if (log.isDebugEnabled()) {
                log.debug("updateGui1 : child sample result - " + child);
            }
            DefaultMutableTreeNode leafNode = new DefaultMutableTreeNode(child);

            treeModel.insertNodeInto(leafNode, currNode, leafIndex++);
            addSubResults(leafNode, child);
            // Add any assertion that failed as children of the sample node
            AssertionResult assertionResults[] = child.getAssertionResults();
            int assertionIndex = leafNode.getChildCount();
            for (int j = 0; j < assertionResults.length; j++) {
                AssertionResult item = assertionResults[j];

                if (item.isFailure() || item.isError()) {
                    DefaultMutableTreeNode assertionNode = new DefaultMutableTreeNode(item);
                    treeModel.insertNodeInto(assertionNode, leafNode, assertionIndex++);
                }
            }
        }
    }

    /**
     * Clears the visualizer.
     */
00275     public synchronized void clearData() {
        log.debug("Start : clear1");

        if (log.isDebugEnabled()) {
            log.debug("clear1 : total child - " + root.getChildCount());
        }
        while (root.getChildCount() > 0) {
            // the child to be removed will always be 0 'cos as the nodes are
            // removed the nth node will become (n-1)th
            treeModel.removeNodeFromParent((DefaultMutableTreeNode) root.getChildAt(0));
        }

        results.setText("");// Response Data // $NON-NLS-1$
        sampleDataField.setText("");// Request Data // $NON-NLS-1$
        log.debug("End : clear1");
    }

    /**
     * Returns the description of this visualizer.
     *
     * @return description of this visualizer
     */
00297     public String toString() {
        String desc = JMeterUtils.getResString("view_results_desc"); //$NON-NLS-1$

        if (log.isDebugEnabled()) {
            log.debug("toString1 : Returning description - " + desc);
        }
        return desc;
    }

    /**
     * Sets the right pane to correspond to the selected node of the left tree.
     */
00309     public void valueChanged(TreeSelectionEvent e) {
        log.debug("Start : valueChanged1");
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) jTree.getLastSelectedPathComponent();

        if (log.isDebugEnabled()) {
            log.debug("valueChanged : selected node - " + node);
        }

        StyledDocument statsDoc = stats.getStyledDocument();
        try {
            statsDoc.remove(0, statsDoc.getLength());
            sampleDataField.setText(""); // $NON-NLS-1$
            results.setText(""); // $NON-NLS-1$
            if (node != null) {
                Object userObject = node.getUserObject();
                if(userObject instanceof SampleResult) {
                    SampleResult res = (SampleResult) userObject;

                    // We are displaying a SampleResult
                    setupTabPaneForSampleResult();

                    if (log.isDebugEnabled()) {
                        log.debug("valueChanged1 : sample result - " + res);
                    }

                    // load time label

                    log.debug("valueChanged1 : load time - " + res.getTime());
                    String sd = res.getSamplerData();
                    if (sd != null) {
                        String rh = res.getRequestHeaders();
                        if (rh != null) {
                            StringBuffer sb = new StringBuffer(sd.length() + rh.length()+20);
                            sb.append(sd);
                            sb.append("\n"); //$NON-NLS-1$
                            sb.append(JMeterUtils.getResString("view_results_request_headers")); //$NON-NLS-1$
                            sb.append("\n"); //$NON-NLS-1$
                            sb.append(rh);
                            sd = sb.toString();
                        }
                        sampleDataField.setText(sd);
                    }

                    StringBuffer statsBuff = new StringBuffer(200);
                    statsBuff.append(JMeterUtils.getResString("view_results_thread_name")).append(res.getThreadName()).append(NL); //$NON-NLS-1$
                    String startTime = dateFormat.format(new Date(res.getStartTime()));
                    statsBuff.append(JMeterUtils.getResString("view_results_sample_start")).append(startTime).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_load_time")).append(res.getTime()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_latency")).append(res.getLatency()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_size_in_bytes")).append(res.getBytes()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_sample_count")).append(res.getSampleCount()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_error_count")).append(res.getErrorCount()).append(NL); //$NON-NLS-1$
                    statsDoc.insertString(statsDoc.getLength(), statsBuff.toString(), null);
                    statsBuff = new StringBuffer(); //reset for reuse

                    String responseCode = res.getResponseCode();
                    log.debug("valueChanged1 : response code - " + responseCode);

                    int responseLevel = 0;
                    if (responseCode != null) {
                        try {
                            responseLevel = Integer.parseInt(responseCode) / 100;
                        } catch (NumberFormatException numberFormatException) {
                            // no need to change the foreground color
                        }
                    }

                    Style style = null;
                    switch (responseLevel) {
                    case 3:
                        style = statsDoc.getStyle(STYLE_REDIRECT);
                        break;
                    case 4:
                        style = statsDoc.getStyle(STYLE_CLIENT_ERROR);
                        break;
                    case 5:
                        style = statsDoc.getStyle(STYLE_SERVER_ERROR);
                        break;
                    }

                    statsBuff.append(JMeterUtils.getResString("view_results_response_code")).append(responseCode).append(NL); //$NON-NLS-1$
                    statsDoc.insertString(statsDoc.getLength(), statsBuff.toString(), style);
                    statsBuff = new StringBuffer(100); //reset for reuse

                    // response message label
                    String responseMsgStr = res.getResponseMessage();

                    log.debug("valueChanged1 : response message - " + responseMsgStr);
                    statsBuff.append(JMeterUtils.getResString("view_results_response_message")).append(responseMsgStr).append(NL); //$NON-NLS-1$

                    statsBuff.append(NL);
                    statsBuff.append(JMeterUtils.getResString("view_results_response_headers")).append(NL); //$NON-NLS-1$
                    statsBuff.append(res.getResponseHeaders()).append(NL);
                    statsBuff.append(NL);
                    final String samplerClass = res.getClass().getName();
                    statsBuff.append(samplerClass.substring(1+samplerClass.lastIndexOf('.'))).append(" " + JMeterUtils.getResString("view_results_fields")).append(NL); //$NON-NLS-1$
                    statsBuff.append("ContentType: ").append(res.getContentType()).append(NL);
                    statsBuff.append("DataEncoding: ").append(res.getDataEncodingNoDefault()).append(NL);
                    statsDoc.insertString(statsDoc.getLength(), statsBuff.toString(), null);
                    statsBuff = null; // Done

                    // get the text response and image icon
                    // to determine which is NOT null
                    if ((SampleResult.TEXT).equals(res.getDataType())) // equals(null) is OK
                    {
                        String response = getResponseAsString(res);
                        if (command.equals(TEXT_COMMAND)) {
                            showTextResponse(response);
                        } else if (command.equals(HTML_COMMAND)) {
                            showRenderedResponse(response, res);
                        } else if (command.equals(JSON_COMMAND)) {
                            showRenderJSONResponse(response);
                        } else if (command.equals(XML_COMMAND)) {
                            showRenderXMLResponse(res);
                        }
                    } else {
                        byte[] responseBytes = res.getResponseData();
                        if (responseBytes != null) {
                            showImage(new ImageIcon(responseBytes)); //TODO implement other non-text types
                        }
                    }
                }
                else if(userObject instanceof AssertionResult) {
                    AssertionResult res = (AssertionResult) userObject;

                    // We are displaying an AssertionResult
                    setupTabPaneForAssertionResult();

                    if (log.isDebugEnabled()) {
                        log.debug("valueChanged1 : sample result - " + res);
                    }

                    StringBuffer statsBuff = new StringBuffer(100);
                    statsBuff.append(JMeterUtils.getResString("view_results_assertion_error")).append(res.isError()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_assertion_failure")).append(res.isFailure()).append(NL); //$NON-NLS-1$
                    statsBuff.append(JMeterUtils.getResString("view_results_assertion_failure_message")).append(res.getFailureMessage()).append(NL); //$NON-NLS-1$
                    statsDoc.insertString(statsDoc.getLength(), statsBuff.toString(), null);
                    statsBuff = null;
                }
            }
        } catch (BadLocationException exc) {
            log.error("Error setting statistics text", exc);
            stats.setText("");
        }
        log.debug("End : valueChanged1");
    }

    private void showImage(Icon image) {
        imageLabel.setIcon(image);
        resultsScrollPane.setViewportView(imageLabel);
        textButton.setEnabled(false);
        htmlButton.setEnabled(false);
        jsonButton.setEnabled(false);
        xmlButton.setEnabled(false);
    }

    private void showTextResponse(String response) {
        results.setContentType("text/plain"); // $NON-NLS-1$
        results.setText(response == null ? "" : response); // $NON-NLS-1$
        results.setCaretPosition(0);
        resultsScrollPane.setViewportView(results);

        textButton.setEnabled(true);
        htmlButton.setEnabled(true);
        jsonButton.setEnabled(true);
        xmlButton.setEnabled(true);
    }

    // It might be useful also to make this available in the 'Request' tab, for
    // when posting JSON.
    private static String prettyJSON(String json) {
        StringBuffer pretty = new StringBuffer(json.length() * 2); // Educated guess

        final String tab = ":   "; // $NON-NLS-1$
        StringBuffer index = new StringBuffer();
        String nl = ""; // $NON-NLS-1$

        Matcher valueOrPair = VALUE_OR_PAIR_PATTERN.matcher(json);

        boolean misparse = false;

        for (int i = 0; i < json.length(); ) {
            final char currentChar = json.charAt(i);
            if ((currentChar == '{') || (currentChar == '[')) {
                pretty.append(nl).append(index).append(currentChar);
                i++;
                index.append(tab);
                misparse = false;
            }
            else if ((currentChar == '}') || (currentChar == ']')) {
                if (index.length() > 0) {
                    index.delete(0, tab.length());
                }
                pretty.append(nl).append(index).append(currentChar);
                i++;
                int j = i;
                while ((j < json.length()) && Character.isWhitespace(json.charAt(j))) {
                    j++;
                }
                if ((j < json.length()) && (json.charAt(j) == ',')) {
                    pretty.append(","); // $NON-NLS-1$
                    i=j+1;
                }
                misparse = false;
            }
            else if (valueOrPair.find(i) && valueOrPair.group().length() > 0) {
                pretty.append(nl).append(index).append(valueOrPair.group());
                i=valueOrPair.end();
                misparse = false;
            }
            else {
                if (!misparse) {
                    pretty.append(nl).append("- Parse failed from:");
                }
                pretty.append(currentChar);
                i++;
                misparse = true;
            }
            nl = "\n"; // $NON-NLS-1$
        }
        return pretty.toString();
    }

    private void showRenderJSONResponse(String response) {
        results.setContentType("text/plain"); // $NON-NLS-1$
        results.setText(response == null ? "" : prettyJSON(response));
        results.setCaretPosition(0);
        resultsScrollPane.setViewportView(results);

        textButton.setEnabled(true);
        htmlButton.setEnabled(true);
        jsonButton.setEnabled(true);
        xmlButton.setEnabled(true);
    }

    private void showRenderXMLResponse(SampleResult res) {
        results.setContentType("text/xml"); // $NON-NLS-1$
        results.setCaretPosition(0);
        byte[] source = res.getResponseData();
        final ByteArrayInputStream baIS = new ByteArrayInputStream(source);
        for(int i=0; i<source.length-XML_PFX.length; i++){
            if (JOrphanUtils.startsWith(source, XML_PFX, i)){
                baIS.skip(i);// Skip the leading bytes (if any)
                break;
            }
        }
        Component view = results;

        // there is also a javax.swing.text.Document class.
        org.w3c.dom.Document document = null;

        StringWriter sw = new StringWriter();
        Tidy tidy = XPathUtil.makeTidyParser(true, true, true, sw);
        document = tidy.parseDOM(baIS, null);
        document.normalize();
        if (tidy.getParseErrors() > 0) {
            showErrorMessageDialog(sw.toString(),
                    "Tidy: " + tidy.getParseErrors() + " errors, " + tidy.getParseWarnings() + " warnings",
                    JOptionPane.WARNING_MESSAGE);
        }

        JPanel domTreePanel = new DOMTreePanel(document);
        view = domTreePanel;
        resultsScrollPane.setViewportView(view);
        textButton.setEnabled(true);
        htmlButton.setEnabled(true);
        jsonButton.setEnabled(true);
        xmlButton.setEnabled(true);
    }

    private static String getResponseAsString(SampleResult res) {

        String response = null;
        if ((SampleResult.TEXT).equals(res.getDataType())) {
            // Showing large strings can be VERY costly, so we will avoid
            // doing so if the response
            // data is larger than 200K. TODO: instead, we could delay doing
            // the result.setText
            // call until the user chooses the "Response data" tab. Plus we
            // could warn the user
            // if this happens and revert the choice if he doesn't confirm
            // he's ready to wait.
            int len = res.getResponseData().length;
            if (MAX_DISPLAY_SIZE > 0 && len > MAX_DISPLAY_SIZE) {
                response = JMeterUtils.getResString("view_results_response_too_large_message") //$NON-NLS-1$
                    + len + " > Max: "+MAX_DISPLAY_SIZE;
                log.warn(response);
            } else {
                response = res.getResponseDataAsString();
            }
        }
        return response;
    }

    /**
     * Display the response as text or as rendered HTML. Change the text on the
     * button appropriate to the current display.
     *
     * @param e
     *            the ActionEvent being processed
     */
00610     public void actionPerformed(ActionEvent e) {
        command = e.getActionCommand();

        if (command != null
                && (command.equals(TEXT_COMMAND) || command.equals(HTML_COMMAND)
                 || command.equals(JSON_COMMAND) || command.equals(XML_COMMAND))) {

            textMode = command.equals(TEXT_COMMAND);

            DefaultMutableTreeNode node = (DefaultMutableTreeNode) jTree.getLastSelectedPathComponent();

            if (node == null) {
                results.setText("");
                return;
            }

            SampleResult res = (SampleResult) node.getUserObject();
            String response = getResponseAsString(res);

            if (command.equals(TEXT_COMMAND)) {
                showTextResponse(response);
            } else if (command.equals(HTML_COMMAND)) {
                showRenderedResponse(response, res);
            } else if (command.equals(JSON_COMMAND)) {
                showRenderJSONResponse(response);
            } else if (command.equals(XML_COMMAND)) {
                showRenderXMLResponse(res);
            }
        }
    }

    private void showRenderedResponse(String response, SampleResult res) {
        if (response == null) {
            results.setText("");
            return;
        }

        int htmlIndex = response.indexOf("<HTML"); // could be <HTML lang=""> // $NON-NLS-1$

        // Look for a case variation
        if (htmlIndex < 0) {
            htmlIndex = response.indexOf("<html"); // ditto // $NON-NLS-1$
        }

        // If we still can't find it, just try using all of the text
        if (htmlIndex < 0) {
            htmlIndex = 0;
        }

        String html = response.substring(htmlIndex);

        /*
         * To disable downloading and rendering of images and frames, enable the
         * editor-kit. The Stream property can then be
         */

        // Must be done before setContentType
        results.setEditorKitForContentType(TEXT_HTML, downloadAll.isSelected() ? defaultHtmlEditor : customisedEditor);

        results.setContentType(TEXT_HTML);

        if (downloadAll.isSelected()) {
            // Allow JMeter to render frames (and relative images)
            // Must be done after setContentType [Why?]
            results.getDocument().putProperty(Document.StreamDescriptionProperty, res.getURL());
        }

        /*
         * Get round problems parsing <META http-equiv='content-type'
         * content='text/html; charset=utf-8'> See
         * http://issues.apache.org/bugzilla/show_bug.cgi?id=23315
         *
         * Is this due to a bug in Java?
         */
        results.getDocument().putProperty("IgnoreCharsetDirective", Boolean.TRUE); // $NON-NLS-1$

        results.setText(html);
        results.setCaretPosition(0);
        resultsScrollPane.setViewportView(results);

        textButton.setEnabled(true);
        htmlButton.setEnabled(true);
        jsonButton.setEnabled(true);
        xmlButton.setEnabled(true);
    }

    private Component createHtmlOrTextPane() {
        ButtonGroup group = new ButtonGroup();

        textButton = new JRadioButton(JMeterUtils.getResString("view_results_render_text")); // $NON-NLS-1$
        textButton.setActionCommand(TEXT_COMMAND);
        textButton.addActionListener(this);
        textButton.setSelected(textMode);
        group.add(textButton);

        htmlButton = new JRadioButton(JMeterUtils.getResString("view_results_render_html")); // $NON-NLS-1$
        htmlButton.setActionCommand(HTML_COMMAND);
        htmlButton.addActionListener(this);
        htmlButton.setSelected(!textMode);
        group.add(htmlButton);

        jsonButton = new JRadioButton(JMeterUtils.getResString("view_results_render_json")); // $NON-NLS-1$
        jsonButton.setActionCommand(JSON_COMMAND);
        jsonButton.addActionListener(this);
        jsonButton.setSelected(!textMode);
        group.add(jsonButton);

        xmlButton = new JRadioButton(JMeterUtils.getResString("view_results_render_xml")); // $NON-NLS-1$
        xmlButton.setActionCommand(XML_COMMAND);
        xmlButton.addActionListener(this);
        xmlButton.setSelected(!textMode);
        group.add(xmlButton);

        downloadAll = new JCheckBox(JMeterUtils.getResString("view_results_render_embedded")); // $NON-NLS-1$

        JPanel pane = new JPanel();
        pane.add(textButton);
        pane.add(htmlButton);
        pane.add(xmlButton);
        pane.add(jsonButton);
        pane.add(downloadAll);
        return pane;
    }

    /**
     * Initialize this visualizer
     */
00737     private void init() {
        setLayout(new BorderLayout(0, 5));
        setBorder(makeBorder());

        add(makeTitlePanel(), BorderLayout.NORTH);

        Component leftSide = createLeftPanel();
        rightSide = new JTabbedPane();
        // Add the common tab
        rightSide.addTab(JMeterUtils.getResString("view_results_tab_sampler"), createResponseMetadataPanel()); // $NON-NLS-1$
        // Create the panels for the other tabs
        requestPane = createRequestPanel();
        resultsPane = createResponseDataPanel();

        JSplitPane mainSplit = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftSide, rightSide);
        add(mainSplit, BorderLayout.CENTER);
    }

    private void setupTabPaneForSampleResult() {
        // Set the title for the first tab
        rightSide.setTitleAt(0, JMeterUtils.getResString("view_results_tab_sampler")); //$NON-NLS-1$
        // Add the other tabs if not present
        if(rightSide.indexOfTab(JMeterUtils.getResString("view_results_tab_request")) < 0) { // $NON-NLS-1$
            rightSide.addTab(JMeterUtils.getResString("view_results_tab_request"), requestPane); // $NON-NLS-1$
        }
        if(rightSide.indexOfTab(JMeterUtils.getResString("view_results_tab_response")) < 0) { // $NON-NLS-1$
            rightSide.addTab(JMeterUtils.getResString("view_results_tab_response"), resultsPane); // $NON-NLS-1$
        }
    }

    private void setupTabPaneForAssertionResult() {
        // Set the title for the first tab
        rightSide.setTitleAt(0, JMeterUtils.getResString("view_results_tab_assertion")); //$NON-NLS-1$
        // Remove the other tabs if present
        int requestTabIndex = rightSide.indexOfTab(JMeterUtils.getResString("view_results_tab_request")); // $NON-NLS-1$
        if(requestTabIndex >= 0) {
            rightSide.removeTabAt(requestTabIndex);
        }
        int responseTabIndex = rightSide.indexOfTab(JMeterUtils.getResString("view_results_tab_response")); // $NON-NLS-1$
        if(responseTabIndex >= 0) {
            rightSide.removeTabAt(responseTabIndex);
        }
    }

    private Component createLeftPanel() {
        SampleResult rootSampleResult = new SampleResult();
        rootSampleResult.setSampleLabel("Root");
        rootSampleResult.setSuccessful(true);
        root = new DefaultMutableTreeNode(rootSampleResult);

        treeModel = new DefaultTreeModel(root);
        jTree = new JTree(treeModel);
        jTree.setCellRenderer(new ResultsNodeRenderer());
        jTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
        jTree.addTreeSelectionListener(this);
        jTree.setRootVisible(false);
        jTree.setShowsRootHandles(true);

        JScrollPane treePane = new JScrollPane(jTree);
        treePane.setPreferredSize(new Dimension(200, 300));
        return treePane;
    }

    private Component createResponseMetadataPanel() {
        stats = new JTextPane();
        stats.setEditable(false);
        stats.setBackground(getBackground());

        // Add styles to use for different types of status messages
        StyledDocument doc = (StyledDocument) stats.getDocument();

        Style style = doc.addStyle(STYLE_REDIRECT, null);
        StyleConstants.setForeground(style, REDIRECT_COLOR);

        style = doc.addStyle(STYLE_CLIENT_ERROR, null);
        StyleConstants.setForeground(style, CLIENT_ERROR_COLOR);

        style = doc.addStyle(STYLE_SERVER_ERROR, null);
        StyleConstants.setForeground(style, SERVER_ERROR_COLOR);

        JScrollPane pane = makeScrollPane(stats);
        pane.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
        return pane;
    }

    private JPanel createRequestPanel() {
        sampleDataField = new JTextArea();
        sampleDataField.setEditable(false);
        sampleDataField.setLineWrap(true);
        sampleDataField.setWrapStyleWord(true);

        JPanel pane = new JPanel(new BorderLayout(0, 5));
        pane.add(makeScrollPane(sampleDataField));
        return pane;
    }

    private JPanel createResponseDataPanel() {
        results = new JEditorPane();
        results.setEditable(false);

        resultsScrollPane = makeScrollPane(results);
        imageLabel = new JLabel();

        JPanel panel = new JPanel(new BorderLayout());
        panel.add(resultsScrollPane, BorderLayout.CENTER);
        panel.add(createHtmlOrTextPane(), BorderLayout.SOUTH);

        return panel;
    }

    private static class ResultsNodeRenderer extends DefaultTreeCellRenderer {
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded,
                boolean leaf, int row, boolean focus) {
            super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, focus);
            boolean failure = true;
            Object userObject = ((DefaultMutableTreeNode) value).getUserObject();
            if(userObject instanceof SampleResult) {
                failure = !(((SampleResult) userObject).isSuccessful());
            }
            else if(userObject instanceof AssertionResult) {
                AssertionResult assertion = (AssertionResult) userObject;
                failure =  assertion.isError() || assertion.isFailure();
            }

            // Set the status for the node
            if (failure) {
                this.setForeground(Color.red);
                this.setIcon(imageFailure);
            } else {
                this.setIcon(imageSuccess);
            }
            return this;
        }
    }

    private static class LocalHTMLEditorKit extends HTMLEditorKit {

        private static final ViewFactory defaultFactory = new LocalHTMLFactory();

        public ViewFactory getViewFactory() {
            return defaultFactory;
        }

        private static class LocalHTMLFactory extends javax.swing.text.html.HTMLEditorKit.HTMLFactory {
            /*
             * Provide dummy implementations to suppress download and display of
             * related resources: - FRAMEs - IMAGEs TODO create better dummy
             * displays TODO suppress LINK somehow
             */
            public View create(Element elem) {
                Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute);
                if (o instanceof HTML.Tag) {
                    HTML.Tag kind = (HTML.Tag) o;
                    if (kind == HTML.Tag.FRAME) {
                        return new ComponentView(elem);
                    } else if (kind == HTML.Tag.IMG) {
                        return new ComponentView(elem);
                    }
                }
                return super.create(elem);
            }
        }
    }

    /**
     *
     * A Dom tree panel for to display response as tree view author <a
     * href="mailto:d.maung@mdl.com">Dave Maung</a> TODO implement to find any
     * nodes in the tree using TreePath.
     *
     */
00908     private static class DOMTreePanel extends JPanel {

        private JTree domJTree;

        public DOMTreePanel(org.w3c.dom.Document document) {
            super(new GridLayout(1, 0));
            try {
                Node firstElement = getFirstElement(document);
                DefaultMutableTreeNode top = new XMLDefaultMutableTreeNode(firstElement);
                domJTree = new JTree(top);

                domJTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
                domJTree.setShowsRootHandles(true);
                JScrollPane domJScrollPane = new JScrollPane(domJTree);
                domJTree.setAutoscrolls(true);
                this.add(domJScrollPane);
                ToolTipManager.sharedInstance().registerComponent(domJTree);
                domJTree.setCellRenderer(new DomTreeRenderer());
            } catch (SAXException e) {
                log.warn("", e);
            }

        }

        /**
         * Skip all DTD nodes, all prolog nodes. They dont support in tree view
         * We let user to insert them however in DOMTreeView, we dont display it
         *
         * @param root
         * @return
         */
00939         private Node getFirstElement(Node parent) {
            NodeList childNodes = parent.getChildNodes();
            Node toReturn = parent; // Must return a valid node, or may generate an NPE
            for (int i = 0; i < childNodes.getLength(); i++) {
                Node childNode = childNodes.item(i);
                toReturn = childNode;
                if (childNode.getNodeType() == Node.ELEMENT_NODE){
                    break;
                }

            }
            return toReturn;
        }

        /**
         * This class is to view as tooltext. This is very useful, when the
         * contents has long string and does not fit in the view. it will also
         * automatically wrap line for each 100 characters since tool tip
         * support html. author <a href="mailto:d.maung@mdl.com">Dave Maung</a>
         */
00959         private static class DomTreeRenderer extends DefaultTreeCellRenderer {
            public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded,
                    boolean leaf, int row, boolean phasFocus) {
                super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, phasFocus);

                DefaultMutableTreeNode valueTreeNode = (DefaultMutableTreeNode) value;
                setToolTipText(getHTML(valueTreeNode.toString(), "<br>", 100)); // $NON-NLS-1$
                return this;
            }

            /**
             * get the html
             *
             * @param str
             * @param separator
             * @param maxChar
             * @return
             */
00977             private String getHTML(String str, String separator, int maxChar) {
                StringBuffer strBuf = new StringBuffer("<html><body bgcolor=\"yellow\"><b>"); // $NON-NLS-1$
                char[] chars = str.toCharArray();
                for (int i = 0; i < chars.length; i++) {

                    if (i % maxChar == 0 && i != 0) {
                        strBuf.append(separator);
                    }
                    strBuf.append(encode(chars[i]));

                }
                strBuf.append("</b></body></html>"); // $NON-NLS-1$
                return strBuf.toString();

            }

            private String encode(char c) {
                String toReturn = String.valueOf(c);
                switch (c) {
                case '<': // $NON-NLS-1$
                    toReturn = "&lt;"; // $NON-NLS-1$
                    break;
                case '>': // $NON-NLS-1$
                    toReturn = "&gt;"; // $NON-NLS-1$
                    break;
                case '\'': // $NON-NLS-1$
                    toReturn = "&apos;"; // $NON-NLS-1$
                    break;
                case '\"': // $NON-NLS-1$
                    toReturn = "&quot;"; // $NON-NLS-1$
                    break;

                }
                return toReturn;
            }
        }
    }

    private static void showErrorMessageDialog(String message, String title, int messageType) {
        JOptionPane.showMessageDialog(null, message, title, messageType);
    }

}

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