java/java-impl/src/com/intellij/unscramble/UnscrambleDialog.java - platform/tools/idea - Git at Google

 /*
  * Copyright 2000-2012 JetBrains s.r.o.
  *
  * Licensed 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 com.intellij.unscramble;

 import com.intellij.execution.ui.ConsoleView;
 import com.intellij.execution.ui.RunContentDescriptor;
 import com.intellij.icons.AllIcons;
 import com.intellij.ide.IdeBundle;
 import com.intellij.ide.util.PropertiesComponent;
 import com.intellij.openapi.actionSystem.DefaultActionGroup;
 import com.intellij.openapi.extensions.Extensions;
 import com.intellij.openapi.fileChooser.FileChooser;
 import com.intellij.openapi.fileChooser.FileChooserDescriptor;
 import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory;
 import com.intellij.openapi.help.HelpManager;
 import com.intellij.openapi.options.ConfigurationException;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.DialogWrapper;
 import com.intellij.openapi.util.Comparing;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vcs.ProjectLevelVcsManager;
 import com.intellij.openapi.vcs.configurable.VcsContentAnnotationConfigurable;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.ui.GuiUtils;
 import com.intellij.ui.ListCellRendererWrapper;
 import com.intellij.ui.TextFieldWithHistory;
 import com.intellij.util.ArrayUtil;
 import com.intellij.util.Consumer;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.text.CharArrayUtil;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;

 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 /**
  * @author cdr
  */
 public class UnscrambleDialog extends DialogWrapper {
   @NonNls private static final String PROPERTY_LOG_FILE_HISTORY_URLS = "UNSCRAMBLE_LOG_FILE_URL";
   @NonNls private static final String PROPERTY_LOG_FILE_LAST_URL = "UNSCRAMBLE_LOG_FILE_LAST_URL";
   @NonNls private static final String PROPERTY_UNSCRAMBLER_NAME_USED = "UNSCRAMBLER_NAME_USED";
   private static final Condition<ThreadState> DEADLOCK_CONDITION = new Condition<ThreadState>() {
     @Override
     public boolean value(ThreadState state) {
       return state.isDeadlocked();
     }
   };

   private final Project myProject;
   private JPanel myEditorPanel;
   private JPanel myLogFileChooserPanel;
   private JComboBox myUnscrambleChooser;
   private JPanel myPanel;
   private TextFieldWithHistory myLogFile;
   private JCheckBox myUseUnscrambler;
   private JPanel myUnscramblePanel;
   private JCheckBox myOnTheFly;
   private JPanel myBottomPanel;
   protected AnalyzeStacktraceUtil.StacktraceEditorPanel myStacktraceEditorPanel;
   private VcsContentAnnotationConfigurable myConfigurable;

   public UnscrambleDialog(Project project) {
     super(false);
     myProject = project;

     populateRegisteredUnscramblerList();
     myUnscrambleChooser.addActionListener(new ActionListener() {
       public void actionPerformed(ActionEvent e) {
         UnscrambleSupport unscrambleSupport = getSelectedUnscrambler();
         GuiUtils.enableChildren(myLogFileChooserPanel, unscrambleSupport != null);
       }
     });
     myUseUnscrambler.addActionListener(new ActionListener() {
       public void actionPerformed(ActionEvent e) {
         useUnscramblerChanged();
       }
     });
     myOnTheFly.setSelected(Registry.get("analyze.exceptions.on.the.fly").asBoolean());
     myOnTheFly.addActionListener(new ActionListener() {
       public void actionPerformed(ActionEvent e) {
         Registry.get("analyze.exceptions.on.the.fly").setValue(myOnTheFly.isSelected());
       }
     });
     createLogFileChooser();
     createEditor();
     reset();

     setTitle(IdeBundle.message("unscramble.dialog.title"));
     init();
   }

   private void useUnscramblerChanged() {
     boolean selected = myUseUnscrambler.isSelected();
     GuiUtils.enableChildren(myUnscramblePanel, selected, myUseUnscrambler);
   }

   private void reset() {
     final List<String> savedUrls = getSavedLogFileUrls();
     myLogFile.setHistorySize(10);
     myLogFile.setHistory(savedUrls);

     String lastUrl = getLastUsedLogUrl();
     if (lastUrl == null && !savedUrls.isEmpty()) {
       lastUrl = savedUrls.get(savedUrls.size() - 1);
     }
     if (lastUrl != null) {
       myLogFile.setText(lastUrl);
       myLogFile.setSelectedItem(lastUrl);
     }
     final UnscrambleSupport selectedUnscrambler = getSavedUnscrambler();

     final int count = myUnscrambleChooser.getItemCount();
     int index = 0;
     if (selectedUnscrambler != null) {
       for (int i = 0; i < count; i++) {
         final UnscrambleSupport unscrambleSupport = (UnscrambleSupport)myUnscrambleChooser.getItemAt(i);
         if (unscrambleSupport != null && Comparing.strEqual(unscrambleSupport.getPresentableName(), selectedUnscrambler.getPresentableName())) {
           index = i;
           break;
         }
       }
     }
     if (count > 0) {
       myUseUnscrambler.setEnabled(true);
       myUnscrambleChooser.setSelectedIndex(index);
       myUseUnscrambler.setSelected(selectedUnscrambler != null);
     }
     else {
       myUseUnscrambler.setEnabled(false);
     }

     useUnscramblerChanged();
     myStacktraceEditorPanel.pasteTextFromClipboard();
   }

   private void createUIComponents() {
     myBottomPanel = new JPanel(new BorderLayout());
     if (ProjectLevelVcsManager.getInstance(myProject).hasActiveVcss()) {
       myConfigurable = new VcsContentAnnotationConfigurable(myProject);
       myBottomPanel.add(myConfigurable.createComponent(), BorderLayout.CENTER);
       myConfigurable.reset();
     }
   }

   public static String getLastUsedLogUrl() {
     return PropertiesComponent.getInstance().getValue(PROPERTY_LOG_FILE_LAST_URL);
   }

   @Nullable
   public static UnscrambleSupport getSavedUnscrambler() {
     final List<UnscrambleSupport> registeredUnscramblers = getRegisteredUnscramblers();
     final String savedUnscramblerName = PropertiesComponent.getInstance().getValue(PROPERTY_UNSCRAMBLER_NAME_USED);
     UnscrambleSupport selectedUnscrambler = null;
     for (final UnscrambleSupport unscrambleSupport : registeredUnscramblers) {
       if (Comparing.strEqual(unscrambleSupport.getPresentableName(), savedUnscramblerName)) {
         selectedUnscrambler = unscrambleSupport;
       }
     }
     return selectedUnscrambler;
   }

   public static List<String> getSavedLogFileUrls() {
     final List<String> res = new ArrayList<String>();
     final String savedUrl = PropertiesComponent.getInstance().getValue(PROPERTY_LOG_FILE_HISTORY_URLS);
     final String[] strings = savedUrl == null ? ArrayUtil.EMPTY_STRING_ARRAY : savedUrl.split(":::");
     for (int i = 0; i != strings.length; ++i) {
       res.add(strings[i]);
     }
     return res;
   }

   @Nullable
   private UnscrambleSupport getSelectedUnscrambler() {
     if (!myUseUnscrambler.isSelected()) return null;
     return (UnscrambleSupport)myUnscrambleChooser.getSelectedItem();
   }

   private void createEditor() {
     myStacktraceEditorPanel = AnalyzeStacktraceUtil.createEditorPanel(myProject, myDisposable);
     myEditorPanel.setLayout(new BorderLayout());
     myEditorPanel.add(myStacktraceEditorPanel, BorderLayout.CENTER);
   }

   @NotNull
   protected Action[] createActions(){
     return new Action[]{createNormalizeTextAction(), getOKAction(), getCancelAction(), getHelpAction()};
   }

   private void createLogFileChooser() {
     myLogFile = new TextFieldWithHistory();
     JPanel panel = GuiUtils.constructFieldWithBrowseButton(myLogFile, new ActionListener() {
       public void actionPerformed(ActionEvent e) {
         FileChooserDescriptor descriptor = FileChooserDescriptorFactory.createSingleFileNoJarsDescriptor();
         FileChooser.chooseFiles(descriptor, myProject, null, new Consumer<List<VirtualFile>>() {
           @Override
           public void consume(List<VirtualFile> files) {
             myLogFile.setText(FileUtil.toSystemDependentName(files.get(files.size() - 1).getPath()));
           }
         });
       }
     });
     myLogFileChooserPanel.setLayout(new BorderLayout());
     myLogFileChooserPanel.add(panel, BorderLayout.CENTER);
   }

   private void populateRegisteredUnscramblerList() {
     List<UnscrambleSupport> unscrambleComponents = getRegisteredUnscramblers();
     for (final UnscrambleSupport unscrambleSupport : unscrambleComponents) {
       myUnscrambleChooser.addItem(unscrambleSupport);
     }
     myUnscrambleChooser.setRenderer(new ListCellRendererWrapper<UnscrambleSupport>() {
       @Override
       public void customize(JList list, UnscrambleSupport unscrambleSupport, int index, boolean selected, boolean hasFocus) {
         setText(unscrambleSupport == null ? IdeBundle.message("unscramble.no.unscrambler.item") : unscrambleSupport.getPresentableName());
       }
     });
   }

   private static List<UnscrambleSupport> getRegisteredUnscramblers() {
     final UnscrambleSupport[] components = Extensions.getExtensions(UnscrambleSupport.EP_NAME);
     return Arrays.asList(components);
   }

   protected JComponent createCenterPanel() {
     return myPanel;
   }

   public void dispose() {
     if (isOK()){
       final List list = myLogFile.getHistory();
       String res = null;
       for (Object aList : list) {
         final String s = (String)aList;
         if (res == null) {
           res = s;
         }
         else {
           res = res + ":::" + s;
         }
       }
       PropertiesComponent.getInstance().setValue(PROPERTY_LOG_FILE_HISTORY_URLS, res);
       UnscrambleSupport selectedUnscrambler = getSelectedUnscrambler();
       PropertiesComponent.getInstance().setValue(PROPERTY_UNSCRAMBLER_NAME_USED, selectedUnscrambler == null ? null : selectedUnscrambler.getPresentableName());

       PropertiesComponent.getInstance().setValue(PROPERTY_LOG_FILE_LAST_URL, myLogFile.getText());
     }
     super.dispose();
   }

   public void setText(String trace) {
     myStacktraceEditorPanel.setText(trace);
   }

   public Action createNormalizeTextAction() {
     return new NormalizeTextAction();
   }

   private final class NormalizeTextAction extends AbstractAction {
     public NormalizeTextAction(){
       putValue(NAME, IdeBundle.message("unscramble.normalize.button"));
       putValue(DEFAULT_ACTION, Boolean.FALSE);
     }

     public void actionPerformed(ActionEvent e){
       String text = myStacktraceEditorPanel.getText();
       myStacktraceEditorPanel.setText(normalizeText(text));
     }

   }

   public static String normalizeText(@NonNls String text) {
     StringBuilder builder = new StringBuilder(text.length());

     text = text.replaceAll("(\\S[ \\t\\x0B\\f\\r]+)(at\\s+)", "$1\n$2");
     String[] lines = text.split("\n");

     boolean first = true;
     boolean inAuxInfo = false;
     for (String line : lines) {
       //noinspection HardCodedStringLiteral
       if (!inAuxInfo && (line.startsWith("JNI global references") || line.trim().equals("Heap"))) {
         builder.append("\n");
         inAuxInfo = true;
       }
       if (inAuxInfo) {
         builder.append(trimSuffix(line)).append("\n");
         continue;
       }
       if (!first && mustHaveNewLineBefore(line)) {
         builder.append("\n");
         if (line.startsWith("\"")) builder.append("\n"); // Additional line break for thread names
       }
       first = false;
       int i = builder.lastIndexOf("\n");
       CharSequence lastLine = i == -1 ? builder : builder.subSequence(i + 1, builder.length());
       if (lastLine.toString().matches("\\s*at") && !line.matches("\\s+.*")) builder.append(" "); // separate 'at' from file name
       builder.append(trimSuffix(line));
     }
     return builder.toString();
   }

   private static String trimSuffix(final String line) {
     int len = line.length();

     while ((0 < len) && (line.charAt(len-1) <= ' ')) {
         len--;
     }
     return (len < line.length()) ? line.substring(0, len) : line;
   }

   private static boolean mustHaveNewLineBefore(String line) {
     final int nonWs = CharArrayUtil.shiftForward(line, 0, " \t");
     if (nonWs < line.length()) {
       line = line.substring(nonWs);
     }

     if (line.startsWith("at")) return true;        // Start of the new stack frame entry
     if (line.startsWith("Caused")) return true;    // Caused by message
     if (line.startsWith("- locked")) return true;  // "Locked a monitor" logging
     if (line.startsWith("- waiting")) return true; // "Waiting for monitor" logging
     if (line.startsWith("- parking to wait")) return true;
     if (line.startsWith("java.lang.Thread.State")) return true;
     if (line.startsWith("\"")) return true;        // Start of the new thread (thread name)

     return false;
   }

   protected void doOKAction() {
     if (myConfigurable != null && myConfigurable.isModified()) {
       try {
         myConfigurable.apply();
       }
       catch (ConfigurationException e) {
         setText(e.getMessage());
         return;
       }
     }
     if (performUnscramble()) {
       myLogFile.addCurrentTextToHistory();
       close(OK_EXIT_CODE);
     }
   }

   public void doHelpAction() {
     HelpManager.getInstance().invokeHelp("find.analyzeStackTrace");
   }

   private boolean performUnscramble() {
     UnscrambleSupport selectedUnscrambler = getSelectedUnscrambler();
     return showUnscrambledText(selectedUnscrambler, myLogFile.getText(), myProject, myStacktraceEditorPanel.getText()) != null;
   }

   @Nullable
   static RunContentDescriptor showUnscrambledText(@Nullable UnscrambleSupport unscrambleSupport,
                                                   String logName,
                                                   Project project,
                                                   String textToUnscramble) {
     String unscrambledTrace = unscrambleSupport == null ? textToUnscramble : unscrambleSupport.unscramble(project,textToUnscramble, logName);
     if (unscrambledTrace == null) return null;
     List<ThreadState> threadStates = ThreadDumpParser.parse(unscrambledTrace);
     return addConsole(project, threadStates, unscrambledTrace);
   }

   private static RunContentDescriptor addConsole(final Project project, final List<ThreadState> threadDump, String unscrambledTrace) {
     Icon icon = null;
     String message = IdeBundle.message("unscramble.unscrambled.stacktrace.tab");
     if (!threadDump.isEmpty()) {
       message = IdeBundle.message("unscramble.unscrambled.threaddump.tab");
       icon = AllIcons.Debugger.ThreadStates.Threaddump;
     }
     else {
       String name = getExceptionName(unscrambledTrace);
       if (name != null) {
         message = name;
         icon = AllIcons.Debugger.ThreadStates.Exception;
       }
     }
     if (ContainerUtil.find(threadDump, DEADLOCK_CONDITION) != null) {
       message = IdeBundle.message("unscramble.unscrambled.deadlock.tab");
       icon = AllIcons.Debugger.KillProcess;
     }
     return AnalyzeStacktraceUtil.addConsole(project, threadDump.size() > 1 ? new AnalyzeStacktraceUtil.ConsoleFactory() {
       public JComponent createConsoleComponent(ConsoleView consoleView, DefaultActionGroup toolbarActions) {
         return new ThreadDumpPanel(project, consoleView, toolbarActions, threadDump);
       }
     } : null, message, unscrambledTrace, icon);
   }

   protected String getDimensionServiceKey(){
     return "#com.intellij.unscramble.UnscrambleDialog";
   }

   public JComponent getPreferredFocusedComponent() {
     return myStacktraceEditorPanel.getEditorComponent();
   }

   @Nullable
   private static String getExceptionName(String unscrambledTrace) {
     @SuppressWarnings("IOResourceOpenedButNotSafelyClosed")
     BufferedReader reader = new BufferedReader(new StringReader(unscrambledTrace));
     for (int i = 0; i < 3; i++) {
       try {
         String line = reader.readLine();
         if (line == null) return null;
         line = line.trim();
         String name = getExceptionAbbreviation(line);
         if (name != null) return name;
       }
       catch (IOException e) {
         return null;
       }
     }
     return null;
   }

   @Nullable
   private static String getExceptionAbbreviation(String line) {
     int lastDelimiter = 0;
     for (int j = 0; j < line.length(); j++) {
       char c = line.charAt(j);
       if (c == '.' || c == '$') {
         lastDelimiter = j;
         continue;
       }
       if (!StringUtil.isJavaIdentifierPart(c)) {
         return null;
       }
     }
     String clazz = line.substring(lastDelimiter);
     String abbreviate = abbreviate(clazz);
     return abbreviate.length() > 1 ? abbreviate : clazz;
   }

   private static String abbreviate(String s) {
       StringBuilder builder = new StringBuilder();
       for (int i = 0; i < s.length(); i++) {
           char c = s.charAt(i);
           if (Character.isUpperCase(c)) {
               builder.append(c);
           }
       }
       return builder.toString();
   }

 }
	/*
	* Copyright 2000-2012 JetBrains s.r.o.
	*
	* Licensed 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 com.intellij.unscramble;

	import com.intellij.execution.ui.ConsoleView;
	import com.intellij.execution.ui.RunContentDescriptor;
	import com.intellij.icons.AllIcons;
	import com.intellij.ide.IdeBundle;
	import com.intellij.ide.util.PropertiesComponent;
	import com.intellij.openapi.actionSystem.DefaultActionGroup;
	import com.intellij.openapi.extensions.Extensions;
	import com.intellij.openapi.fileChooser.FileChooser;
	import com.intellij.openapi.fileChooser.FileChooserDescriptor;
	import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory;
	import com.intellij.openapi.help.HelpManager;
	import com.intellij.openapi.options.ConfigurationException;
	import com.intellij.openapi.project.Project;
	import com.intellij.openapi.ui.DialogWrapper;
	import com.intellij.openapi.util.Comparing;
	import com.intellij.openapi.util.Condition;
	import com.intellij.openapi.util.io.FileUtil;
	import com.intellij.openapi.util.registry.Registry;
	import com.intellij.openapi.util.text.StringUtil;
	import com.intellij.openapi.vcs.ProjectLevelVcsManager;
	import com.intellij.openapi.vcs.configurable.VcsContentAnnotationConfigurable;
	import com.intellij.openapi.vfs.VirtualFile;
	import com.intellij.ui.GuiUtils;
	import com.intellij.ui.ListCellRendererWrapper;
	import com.intellij.ui.TextFieldWithHistory;
	import com.intellij.util.ArrayUtil;
	import com.intellij.util.Consumer;
	import com.intellij.util.containers.ContainerUtil;
	import com.intellij.util.text.CharArrayUtil;
	import org.jetbrains.annotations.NonNls;
	import org.jetbrains.annotations.NotNull;
	import org.jetbrains.annotations.Nullable;

	import javax.swing.*;
	import java.awt.*;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.StringReader;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	/**
	* @author cdr
	*/
	public class UnscrambleDialog extends DialogWrapper {
	@NonNls private static final String PROPERTY_LOG_FILE_HISTORY_URLS = "UNSCRAMBLE_LOG_FILE_URL";
	@NonNls private static final String PROPERTY_LOG_FILE_LAST_URL = "UNSCRAMBLE_LOG_FILE_LAST_URL";
	@NonNls private static final String PROPERTY_UNSCRAMBLER_NAME_USED = "UNSCRAMBLER_NAME_USED";
	private static final Condition<ThreadState> DEADLOCK_CONDITION = new Condition<ThreadState>() {
	@Override
	public boolean value(ThreadState state) {
	return state.isDeadlocked();
	}
	};

	private final Project myProject;
	private JPanel myEditorPanel;
	private JPanel myLogFileChooserPanel;
	private JComboBox myUnscrambleChooser;
	private JPanel myPanel;
	private TextFieldWithHistory myLogFile;
	private JCheckBox myUseUnscrambler;
	private JPanel myUnscramblePanel;
	private JCheckBox myOnTheFly;
	private JPanel myBottomPanel;
	protected AnalyzeStacktraceUtil.StacktraceEditorPanel myStacktraceEditorPanel;
	private VcsContentAnnotationConfigurable myConfigurable;

	public UnscrambleDialog(Project project) {
	super(false);
	myProject = project;

	populateRegisteredUnscramblerList();
	myUnscrambleChooser.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	UnscrambleSupport unscrambleSupport = getSelectedUnscrambler();
	GuiUtils.enableChildren(myLogFileChooserPanel, unscrambleSupport != null);
	}
	});
	myUseUnscrambler.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	useUnscramblerChanged();
	}
	});
	myOnTheFly.setSelected(Registry.get("analyze.exceptions.on.the.fly").asBoolean());
	myOnTheFly.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	Registry.get("analyze.exceptions.on.the.fly").setValue(myOnTheFly.isSelected());
	}
	});
	createLogFileChooser();
	createEditor();
	reset();

	setTitle(IdeBundle.message("unscramble.dialog.title"));
	init();
	}

	private void useUnscramblerChanged() {
	boolean selected = myUseUnscrambler.isSelected();
	GuiUtils.enableChildren(myUnscramblePanel, selected, myUseUnscrambler);
	}

	private void reset() {
	final List<String> savedUrls = getSavedLogFileUrls();
	myLogFile.setHistorySize(10);
	myLogFile.setHistory(savedUrls);

	String lastUrl = getLastUsedLogUrl();
	if (lastUrl == null && !savedUrls.isEmpty()) {
	lastUrl = savedUrls.get(savedUrls.size() - 1);
	}
	if (lastUrl != null) {
	myLogFile.setText(lastUrl);
	myLogFile.setSelectedItem(lastUrl);
	}
	final UnscrambleSupport selectedUnscrambler = getSavedUnscrambler();

	final int count = myUnscrambleChooser.getItemCount();
	int index = 0;
	if (selectedUnscrambler != null) {
	for (int i = 0; i < count; i++) {
	final UnscrambleSupport unscrambleSupport = (UnscrambleSupport)myUnscrambleChooser.getItemAt(i);
	if (unscrambleSupport != null && Comparing.strEqual(unscrambleSupport.getPresentableName(), selectedUnscrambler.getPresentableName())) {
	index = i;
	break;
	}
	}
	}
	if (count > 0) {
	myUseUnscrambler.setEnabled(true);
	myUnscrambleChooser.setSelectedIndex(index);
	myUseUnscrambler.setSelected(selectedUnscrambler != null);
	}
	else {
	myUseUnscrambler.setEnabled(false);
	}

	useUnscramblerChanged();
	myStacktraceEditorPanel.pasteTextFromClipboard();
	}

	private void createUIComponents() {
	myBottomPanel = new JPanel(new BorderLayout());
	if (ProjectLevelVcsManager.getInstance(myProject).hasActiveVcss()) {
	myConfigurable = new VcsContentAnnotationConfigurable(myProject);
	myBottomPanel.add(myConfigurable.createComponent(), BorderLayout.CENTER);
	myConfigurable.reset();
	}
	}

	public static String getLastUsedLogUrl() {
	return PropertiesComponent.getInstance().getValue(PROPERTY_LOG_FILE_LAST_URL);
	}

	@Nullable
	public static UnscrambleSupport getSavedUnscrambler() {
	final List<UnscrambleSupport> registeredUnscramblers = getRegisteredUnscramblers();
	final String savedUnscramblerName = PropertiesComponent.getInstance().getValue(PROPERTY_UNSCRAMBLER_NAME_USED);
	UnscrambleSupport selectedUnscrambler = null;
	for (final UnscrambleSupport unscrambleSupport : registeredUnscramblers) {
	if (Comparing.strEqual(unscrambleSupport.getPresentableName(), savedUnscramblerName)) {
	selectedUnscrambler = unscrambleSupport;
	}
	}
	return selectedUnscrambler;
	}

	public static List<String> getSavedLogFileUrls() {
	final List<String> res = new ArrayList<String>();
	final String savedUrl = PropertiesComponent.getInstance().getValue(PROPERTY_LOG_FILE_HISTORY_URLS);
	final String[] strings = savedUrl == null ? ArrayUtil.EMPTY_STRING_ARRAY : savedUrl.split(":::");
	for (int i = 0; i != strings.length; ++i) {
	res.add(strings[i]);
	}
	return res;
	}

	@Nullable
	private UnscrambleSupport getSelectedUnscrambler() {
	if (!myUseUnscrambler.isSelected()) return null;
	return (UnscrambleSupport)myUnscrambleChooser.getSelectedItem();
	}

	private void createEditor() {
	myStacktraceEditorPanel = AnalyzeStacktraceUtil.createEditorPanel(myProject, myDisposable);
	myEditorPanel.setLayout(new BorderLayout());
	myEditorPanel.add(myStacktraceEditorPanel, BorderLayout.CENTER);
	}

	@NotNull
	protected Action[] createActions(){
	return new Action[]{createNormalizeTextAction(), getOKAction(), getCancelAction(), getHelpAction()};
	}

	private void createLogFileChooser() {
	myLogFile = new TextFieldWithHistory();
	JPanel panel = GuiUtils.constructFieldWithBrowseButton(myLogFile, new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	FileChooserDescriptor descriptor = FileChooserDescriptorFactory.createSingleFileNoJarsDescriptor();
	FileChooser.chooseFiles(descriptor, myProject, null, new Consumer<List<VirtualFile>>() {
	@Override
	public void consume(List<VirtualFile> files) {
	myLogFile.setText(FileUtil.toSystemDependentName(files.get(files.size() - 1).getPath()));
	}
	});
	}
	});
	myLogFileChooserPanel.setLayout(new BorderLayout());
	myLogFileChooserPanel.add(panel, BorderLayout.CENTER);
	}

	private void populateRegisteredUnscramblerList() {
	List<UnscrambleSupport> unscrambleComponents = getRegisteredUnscramblers();
	for (final UnscrambleSupport unscrambleSupport : unscrambleComponents) {
	myUnscrambleChooser.addItem(unscrambleSupport);
	}
	myUnscrambleChooser.setRenderer(new ListCellRendererWrapper<UnscrambleSupport>() {
	@Override
	public void customize(JList list, UnscrambleSupport unscrambleSupport, int index, boolean selected, boolean hasFocus) {
	setText(unscrambleSupport == null ? IdeBundle.message("unscramble.no.unscrambler.item") : unscrambleSupport.getPresentableName());
	}
	});
	}

	private static List<UnscrambleSupport> getRegisteredUnscramblers() {
	final UnscrambleSupport[] components = Extensions.getExtensions(UnscrambleSupport.EP_NAME);
	return Arrays.asList(components);
	}

	protected JComponent createCenterPanel() {
	return myPanel;
	}

	public void dispose() {
	if (isOK()){
	final List list = myLogFile.getHistory();
	String res = null;
	for (Object aList : list) {
	final String s = (String)aList;
	if (res == null) {
	res = s;
	}
	else {
	res = res + ":::" + s;
	}
	}
	PropertiesComponent.getInstance().setValue(PROPERTY_LOG_FILE_HISTORY_URLS, res);
	UnscrambleSupport selectedUnscrambler = getSelectedUnscrambler();
	PropertiesComponent.getInstance().setValue(PROPERTY_UNSCRAMBLER_NAME_USED, selectedUnscrambler == null ? null : selectedUnscrambler.getPresentableName());

	PropertiesComponent.getInstance().setValue(PROPERTY_LOG_FILE_LAST_URL, myLogFile.getText());
	}
	super.dispose();
	}

	public void setText(String trace) {
	myStacktraceEditorPanel.setText(trace);
	}

	public Action createNormalizeTextAction() {
	return new NormalizeTextAction();
	}

	private final class NormalizeTextAction extends AbstractAction {
	public NormalizeTextAction(){
	putValue(NAME, IdeBundle.message("unscramble.normalize.button"));
	putValue(DEFAULT_ACTION, Boolean.FALSE);
	}

	public void actionPerformed(ActionEvent e){
	String text = myStacktraceEditorPanel.getText();
	myStacktraceEditorPanel.setText(normalizeText(text));
	}

	}

	public static String normalizeText(@NonNls String text) {
	StringBuilder builder = new StringBuilder(text.length());

	text = text.replaceAll("(\\S[ \\t\\x0B\\f\\r]+)(at\\s+)", "$1\n$2");
	String[] lines = text.split("\n");

	boolean first = true;
	boolean inAuxInfo = false;
	for (String line : lines) {
	//noinspection HardCodedStringLiteral
	if (!inAuxInfo && (line.startsWith("JNI global references") \|\| line.trim().equals("Heap"))) {
	builder.append("\n");
	inAuxInfo = true;
	}
	if (inAuxInfo) {
	builder.append(trimSuffix(line)).append("\n");
	continue;
	}
	if (!first && mustHaveNewLineBefore(line)) {
	builder.append("\n");
	if (line.startsWith("\"")) builder.append("\n"); // Additional line break for thread names
	}
	first = false;
	int i = builder.lastIndexOf("\n");
	CharSequence lastLine = i == -1 ? builder : builder.subSequence(i + 1, builder.length());
	if (lastLine.toString().matches("\\sat") && !line.matches("\\s+.")) builder.append(" "); // separate 'at' from file name
	builder.append(trimSuffix(line));
	}
	return builder.toString();
	}

	private static String trimSuffix(final String line) {
	int len = line.length();

	while ((0 < len) && (line.charAt(len-1) <= ' ')) {
	len--;
	}
	return (len < line.length()) ? line.substring(0, len) : line;
	}

	private static boolean mustHaveNewLineBefore(String line) {
	final int nonWs = CharArrayUtil.shiftForward(line, 0, " \t");
	if (nonWs < line.length()) {
	line = line.substring(nonWs);
	}

	if (line.startsWith("at")) return true; // Start of the new stack frame entry
	if (line.startsWith("Caused")) return true; // Caused by message
	if (line.startsWith("- locked")) return true; // "Locked a monitor" logging
	if (line.startsWith("- waiting")) return true; // "Waiting for monitor" logging
	if (line.startsWith("- parking to wait")) return true;
	if (line.startsWith("java.lang.Thread.State")) return true;
	if (line.startsWith("\"")) return true; // Start of the new thread (thread name)

	return false;
	}

	protected void doOKAction() {
	if (myConfigurable != null && myConfigurable.isModified()) {
	try {
	myConfigurable.apply();
	}
	catch (ConfigurationException e) {
	setText(e.getMessage());
	return;
	}
	}
	if (performUnscramble()) {
	myLogFile.addCurrentTextToHistory();
	close(OK_EXIT_CODE);
	}
	}

	public void doHelpAction() {
	HelpManager.getInstance().invokeHelp("find.analyzeStackTrace");
	}

	private boolean performUnscramble() {
	UnscrambleSupport selectedUnscrambler = getSelectedUnscrambler();
	return showUnscrambledText(selectedUnscrambler, myLogFile.getText(), myProject, myStacktraceEditorPanel.getText()) != null;
	}

	@Nullable
	static RunContentDescriptor showUnscrambledText(@Nullable UnscrambleSupport unscrambleSupport,
	String logName,
	Project project,
	String textToUnscramble) {
	String unscrambledTrace = unscrambleSupport == null ? textToUnscramble : unscrambleSupport.unscramble(project,textToUnscramble, logName);
	if (unscrambledTrace == null) return null;
	List<ThreadState> threadStates = ThreadDumpParser.parse(unscrambledTrace);
	return addConsole(project, threadStates, unscrambledTrace);
	}

	private static RunContentDescriptor addConsole(final Project project, final List<ThreadState> threadDump, String unscrambledTrace) {
	Icon icon = null;
	String message = IdeBundle.message("unscramble.unscrambled.stacktrace.tab");
	if (!threadDump.isEmpty()) {
	message = IdeBundle.message("unscramble.unscrambled.threaddump.tab");
	icon = AllIcons.Debugger.ThreadStates.Threaddump;
	}
	else {
	String name = getExceptionName(unscrambledTrace);
	if (name != null) {
	message = name;
	icon = AllIcons.Debugger.ThreadStates.Exception;
	}
	}
	if (ContainerUtil.find(threadDump, DEADLOCK_CONDITION) != null) {
	message = IdeBundle.message("unscramble.unscrambled.deadlock.tab");
	icon = AllIcons.Debugger.KillProcess;
	}
	return AnalyzeStacktraceUtil.addConsole(project, threadDump.size() > 1 ? new AnalyzeStacktraceUtil.ConsoleFactory() {
	public JComponent createConsoleComponent(ConsoleView consoleView, DefaultActionGroup toolbarActions) {
	return new ThreadDumpPanel(project, consoleView, toolbarActions, threadDump);
	}
	} : null, message, unscrambledTrace, icon);
	}

	protected String getDimensionServiceKey(){
	return "#com.intellij.unscramble.UnscrambleDialog";
	}

	public JComponent getPreferredFocusedComponent() {
	return myStacktraceEditorPanel.getEditorComponent();
	}

	@Nullable
	private static String getExceptionName(String unscrambledTrace) {
	@SuppressWarnings("IOResourceOpenedButNotSafelyClosed")
	BufferedReader reader = new BufferedReader(new StringReader(unscrambledTrace));
	for (int i = 0; i < 3; i++) {
	try {
	String line = reader.readLine();
	if (line == null) return null;
	line = line.trim();
	String name = getExceptionAbbreviation(line);
	if (name != null) return name;
	}
	catch (IOException e) {
	return null;
	}
	}
	return null;
	}

	@Nullable
	private static String getExceptionAbbreviation(String line) {
	int lastDelimiter = 0;
	for (int j = 0; j < line.length(); j++) {
	char c = line.charAt(j);
	if (c == '.' \|\| c == '$') {
	lastDelimiter = j;
	continue;
	}
	if (!StringUtil.isJavaIdentifierPart(c)) {
	return null;
	}
	}
	String clazz = line.substring(lastDelimiter);
	String abbreviate = abbreviate(clazz);
	return abbreviate.length() > 1 ? abbreviate : clazz;
	}

	private static String abbreviate(String s) {
	StringBuilder builder = new StringBuilder();
	for (int i = 0; i < s.length(); i++) {
	char c = s.charAt(i);
	if (Character.isUpperCase(c)) {
	builder.append(c);
	}
	}
	return builder.toString();
	}

	}