bundles/org.eclipse.swt.tools.spies/src/org/eclipse/swt/tools/internal/Sleak.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2020 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.tools.internal;

 import java.io.*;

 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.widgets.*;

 /**
  * Instructions on how to use the Sleak tool with a standlaone SWT example:
  *
  * Modify the main method below to launch your application.
  * Run Sleak.
  *
  */
 public class Sleak {
 	List list;
 	Canvas canvas;
 	Button enableTracking, snapshot, diff, stackTrace, saveAs, save;
 	Text text;
 	Label label;

 	String filterPath = "";
 	String fileName = "sleakout";
 	String selectedName = null;
 	boolean incrementFileNames = true;
 	boolean saveImages = true;
 	int fileCount = 0;

 	Object [] oldObjects = new Object [0];
 	Error [] oldErrors = new Error [0];
 	Object [] objects = new Object [0];
 	Error [] errors = new Error [0];

 public static void main (String [] args) {
 	DeviceData data = new DeviceData();
 	data.tracking = true;
 	Display display = new Display (data);
 	Sleak sleak = new Sleak ();
 	Shell shell = new Shell(display);
 	shell.setText ("S-Leak");
 	Point size = shell.getSize ();
 	shell.setSize (size.x / 2, size.y / 2);
 	sleak.create (shell);
 	shell.open();

 	// Launch your application here
 	// e.g.
 //	Shell shell = new Shell(display);
 //	Button button1 = new Button(shell, SWT.PUSH);
 //	button1.setBounds(10, 10, 100, 50);
 //	button1.setText("Hello World");
 //	Image image = new Image(display, 20, 20);
 //	Button button2 = new Button(shell, SWT.PUSH);
 //	button2.setBounds(10, 70, 100, 50);
 //	button2.setImage(image);
 //	shell.open();

 	while (!shell.isDisposed ()) {
 		if (!display.readAndDispatch ()) display.sleep ();
 	}
 	display.dispose ();
 }

 public void create (Composite parent) {
 	list = new List (parent, SWT.BORDER | SWT.V_SCROLL);
 	list.addListener (SWT.Selection, event -> refreshObject ());
 	text = new Text (parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
 	canvas = new Canvas (parent, SWT.BORDER);
 	canvas.addListener (SWT.Paint, event -> paintCanvas (event));
 	enableTracking = new Button (parent, SWT.CHECK);
 	enableTracking.setText ("Enable");
 	enableTracking.setToolTipText("Enable Device resource tracking. Only resources allocated once enabled will be tracked. To track devices created before view is created, turn on tracing options, see https://www.eclipse.org/swt/tools.php");
 	enableTracking.addListener (SWT.Selection, e -> toggleEnableTracking ());
 	enableTracking.setSelection(enableTracking.getDisplay().isTracking());
 	stackTrace = new Button (parent, SWT.CHECK);
 	stackTrace.setText ("Stack");
 	stackTrace.addListener (SWT.Selection, e -> toggleStackTrace ());
 	snapshot = new Button (parent, SWT.PUSH);
 	snapshot.setText ("Snap");
 	snapshot.addListener (SWT.Selection, event -> refreshAll ());
 	diff = new Button (parent, SWT.PUSH);
 	diff.setText ("Diff");
 	diff.addListener (SWT.Selection, event -> refreshDifference ());
 	label = new Label (parent, SWT.BORDER);
 	label.setText ("0 object(s)");
 	saveAs = new Button (parent, SWT.PUSH);
 	saveAs.setText ("Save As...");
 	saveAs.setToolTipText("Saves the contents of the list to a file, optionally with the stack traces if selected.");
 	saveAs.addListener (SWT.Selection, event -> saveToFile (true));
 	save = new Button (parent, SWT.PUSH);
 	save.setText ("Save");
 	save.setToolTipText("Saves to the previously selected file.");
 	save.addListener (SWT.Selection, event -> saveToFile (false));
 	parent.addListener (SWT.Resize, e -> layout ());
 	stackTrace.setSelection (false);
 	text.setVisible (false);
 	layout();
 }

 private void toggleEnableTracking() {
 	Display display = enableTracking.getDisplay();
 	boolean tracking = display.isTracking();
 	display.setTracking(!tracking);
 }

 void refreshLabel () {
 	int cursors = 0, fonts = 0, gcs = 0, images = 0;
 	int paths = 0, patterns = 0, regions = 0, textLayouts = 0, transforms= 0;
 	for (Object object : objects) {
 		if (object instanceof Cursor) cursors++;
 		if (object instanceof Font) fonts++;
 		if (object instanceof GC) gcs++;
 		if (object instanceof Image) images++;
 		if (object instanceof Path) paths++;
 		if (object instanceof Pattern) patterns++;
 		if (object instanceof Region) regions++;
 		if (object instanceof TextLayout) textLayouts++;
 		if (object instanceof Transform) transforms++;
 	}
 	String string = "";
 	if (cursors != 0) string += cursors + " Cursor(s)\n";
 	if (fonts != 0) string += fonts + " Font(s)\n";
 	if (gcs != 0) string += gcs + " GC(s)\n";
 	if (images != 0) string += images + " Image(s)\n";
 	if (paths != 0) string += paths + " Paths(s)\n";
 	if (patterns != 0) string += patterns + " Pattern(s)\n";
 	if (regions != 0) string += regions + " Region(s)\n";
 	if (textLayouts != 0) string += textLayouts + " TextLayout(s)\n";
 	if (transforms != 0) string += transforms + " Transform(s)\n";
 	if (string.length () != 0) {
 		string = string.substring (0, string.length () - 1);
 	}
 	label.setText (string);
 }

 void refreshDifference () {
 	Display display = canvas.getDisplay();
 	DeviceData info = display.getDeviceData ();
 	if (!info.tracking) {
 		Shell shell = canvas.getShell();
 		MessageBox dialog = new MessageBox (shell, SWT.ICON_WARNING | SWT.YES | SWT.NO);
 		dialog.setText (shell.getText ());
 		dialog.setMessage ("Warning: Device is not tracking resource allocation\nWould you like to enable tracking now for future created resources?");
 		if (SWT.YES == dialog.open ()) {
 			enableTracking.setSelection(true);
 			toggleEnableTracking();
 		}
 	}
 	int size = 0;
 	for (int i = 0; i < info.objects.length; i++) {
 		if (!(info.objects[i] instanceof Color)) {
 			size++;
 		}
 	}
 	Object [] newObjects = new Object[size];
 	Error [] newErrors = new Error[size];
 	for (int i = 0, out_i = 0; i < info.objects.length; i++) {
 		// Bug 563018: Colors don't require disposal, so exclude
 		// them from the list of allocated objects.
 		if (!(info.objects[i] instanceof Color)) {
 			newObjects[out_i] = info.objects[i];
 			newErrors[out_i] = info.errors[i];
 			out_i++;
 		}
 	}
 	Object [] diffObjects = new Object [newObjects.length];
 	Error [] diffErrors = new Error [newErrors.length];
 	int count = 0;
 	for (int i=0; i<newObjects.length; i++) {
 		int index = 0;
 		while (index < oldObjects.length) {
 			if (newObjects [i] == oldObjects [index]) break;
 			index++;
 		}
 		if (index == oldObjects.length) {
 			diffObjects [count] = newObjects [i];
 			diffErrors [count] = newErrors [i];
 			count++;
 		}
 	}
 	objects = new Object [count];
 	errors = new Error [count];
 	System.arraycopy (diffObjects, 0, objects, 0, count);
 	System.arraycopy (diffErrors, 0, errors, 0, count);
 	list.removeAll ();
 	text.setText ("");
 	canvas.redraw ();
 	for (Object object : objects) {
 		list.add (object.toString());
 	}
 	refreshLabel ();
 	layout ();
 }

 private void saveToFile(boolean prompt) {
 	if (prompt || selectedName == null) {
 		FileDialog dialog = new FileDialog(saveAs.getShell(), SWT.SAVE);
 		dialog.setFilterPath(filterPath);
 		dialog.setFileName(fileName);
 		dialog.setOverwrite(true);
 		selectedName = dialog.open();
 		fileCount = 0;
 		if (selectedName == null) {
 			return;
 		}
 		filterPath = dialog.getFilterPath();
 		fileName = dialog.getFileName();

 		MessageBox msg = new MessageBox(saveAs.getShell(), SWT.ICON_QUESTION | SWT.YES | SWT.NO);
 		msg.setText("Append incrementing file counter?");
 		msg.setMessage("Append an incrementing file count to the file name on each save, starting at 000?");
 		incrementFileNames = msg.open() == SWT.YES;

 		msg = new MessageBox(saveAs.getShell(), SWT.ICON_QUESTION | SWT.YES | SWT.NO);
 		msg.setText("Save images for each resource?");
 		msg.setMessage("Save an image (png) for each resource?");
 		saveImages = msg.open() == SWT.YES;
 	}

 	String fileName = selectedName;
 	if (incrementFileNames) {
 		fileName = String.format("%s_%03d", fileName, fileCount++);
 	}
 	try (PrintWriter file = new PrintWriter(new FileOutputStream(fileName))) {

 		for (int i = 0; i < errors.length; i++) {
 			Object object = objects[i];
 			Error error = errors[i];
 			file.print(object.toString());
 			if (saveImages) {
 				String suffix = String.format("%05d.png", i);
 				String pngName = String.format("%s_%s", fileName, suffix);
 				Image image = new Image(saveAs.getDisplay(), 100, 100);
 				try {
 					GC gc = new GC(image);
 					try {
 						draw(gc, object);
 					} finally {
 						gc.dispose();
 					}
 					ImageLoader loader = new ImageLoader();
 					loader.data = new ImageData[] { image.getImageData() };
 					loader.save(pngName, SWT.IMAGE_PNG);
 				} finally {
 					image.dispose();
 				}

 				file.print(" -> ");
 				file.print(suffix);
 			}
 			file.println();
 			if (stackTrace.getSelection()) {
 				error.printStackTrace(file);
 				System.out.println();
 			}
 		}
 	} catch (IOException e1) {
 		MessageBox msg = new MessageBox(saveAs.getShell(), SWT.ICON_ERROR | SWT.OK);
 		msg.setText("Failed to save");
 		msg.setMessage("Failed to save S-Leak file.\n" + e1.getMessage());
 		msg.open();
 	}
 }

 void toggleStackTrace () {
 	refreshObject ();
 	layout ();
 }

 void paintCanvas (Event event) {
 	canvas.setCursor (null);
 	int index = list.getSelectionIndex ();
 	if (index == -1) return;
 	GC gc = event.gc;
 	Object object = objects [index];
 	draw(gc, object);
 }

 void draw(GC gc, Object object) {
 	if (object instanceof Cursor) {
 		if (((Cursor)object).isDisposed ()) return;
 		canvas.setCursor ((Cursor) object);
 		return;
 	}
 	if (object instanceof Font) {
 		if (((Font)object).isDisposed ()) return;
 		gc.setFont ((Font) object);
 		String string = "";
 		String lf = text.getLineDelimiter ();
 		for (FontData data : gc.getFont ().getFontData ()) {
 			String style = "NORMAL";
 			int bits = data.getStyle ();
 			if (bits != 0) {
 				if ((bits & SWT.BOLD) != 0) style = "BOLD ";
 				if ((bits & SWT.ITALIC) != 0) style += "ITALIC";
 			}
 			string += data.getName () + " " + data.getHeight () + " " + style + lf;
 		}
 		gc.drawString (string, 0, 0);
 		return;
 	}
 	//NOTHING TO DRAW FOR GC
 //	if (object instanceof GC) {
 //		return;
 //	}
 	if (object instanceof Image) {
 		if (((Image)object).isDisposed ()) return;
 		gc.drawImage ((Image) object, 0, 0);
 		return;
 	}
 	if (object instanceof Path) {
 		if (((Path)object).isDisposed ()) return;
 		gc.drawPath ((Path) object);
 		return;
 	}
 	if (object instanceof Pattern) {
 		if (((Pattern)object).isDisposed ()) return;
 		gc.setBackgroundPattern ((Pattern)object);
 		gc.fillRectangle (canvas.getClientArea ());
 		gc.setBackgroundPattern (null);
 		return;
 	}
 	if (object instanceof Region) {
 		if (((Region)object).isDisposed ()) return;
 		String string = ((Region)object).getBounds().toString();
 		gc.drawString (string, 0, 0);
 		return;
 	}
 	if (object instanceof TextLayout) {
 		if (((TextLayout)object).isDisposed ()) return;
 		((TextLayout)object).draw (gc, 0, 0);
 		return;
 	}
 	if (object instanceof Transform) {
 		if (((Transform)object).isDisposed ()) return;
 		String string = ((Transform)object).toString();
 		gc.drawString (string, 0, 0);
 		return;
 	}
 }

 void refreshObject () {
 	int index = list.getSelectionIndex ();
 	if (index == -1) return;
 	if (stackTrace.getSelection ()) {
 		ByteArrayOutputStream stream = new ByteArrayOutputStream ();
 		PrintStream s = new PrintStream (stream);
 		errors [index].printStackTrace (s);
 		text.setText (stream.toString ());
 		text.setVisible (true);
 		canvas.setVisible (false);
 	} else {
 		canvas.setVisible (true);
 		text.setVisible (false);
 		canvas.redraw ();
 	}
 }

 void refreshAll () {
 	oldObjects = new Object [0];
 	oldErrors = new Error [0];
 	refreshDifference ();
 	oldObjects = objects;
 	oldErrors = errors;
 }

 void layout () {
 	Composite parent = canvas.getParent();
 	Rectangle rect = parent.getClientArea ();
 	int width = 0;
 	String [] items = list.getItems ();
 	GC gc = new GC (list);
 	for (int i=0; i<objects.length; i++) {
 		width = Math.max (width, gc.stringExtent (items [i]).x);
 	}
 	gc.dispose ();
 	Point enableTrackingSize = enableTracking.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point snapshotSize = snapshot.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point diffSize = diff.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point stackSize = stackTrace.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point labelSize = label.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point saveAsSize = saveAs.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	Point saveSize = save.computeSize (SWT.DEFAULT, SWT.DEFAULT);
 	width = Math.max (enableTrackingSize.x, width);
 	width = Math.max (snapshotSize.x, Math.max (diffSize.x, Math.max (stackSize.x, width)));
 	width = Math.max (saveAsSize.x, Math.max (saveSize.x, width));
 	width = Math.max (labelSize.x, list.computeSize (width, SWT.DEFAULT).x);
 	width = Math.max (64, width);
 	enableTracking.setBounds (0, 0, width, enableTrackingSize.y);
 	snapshot.setBounds (0, enableTrackingSize.y, width, snapshotSize.y);
 	diff.setBounds (0, enableTrackingSize.y + snapshotSize.y, width, diffSize.y);
 	stackTrace.setBounds (0, enableTrackingSize.y + snapshotSize.y + diffSize.y, width, stackSize.y);
 	label.setBounds (0, rect.height - saveSize.y - saveAsSize.y - labelSize.y, width, labelSize.y);
 	saveAs.setBounds (0, rect.height - saveSize.y - saveAsSize.y, width, saveAsSize.y);
 	save.setBounds (0, rect.height - saveSize.y, width, saveSize.y);
 	int height = enableTrackingSize.y + snapshotSize.y + diffSize.y + stackSize.y;
 	list.setBounds (0, height, width, rect.height - height - labelSize.y - saveAsSize.y -saveSize.y);
 	text.setBounds (width, 0, rect.width - width, rect.height);
 	canvas.setBounds (width, 0, rect.width - width, rect.height);
 }

 }
	/*******************************************************************************
	* Copyright (c) 2007, 2020 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.tools.internal;

	import java.io.*;

	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.widgets.*;

	/**
	* Instructions on how to use the Sleak tool with a standlaone SWT example:
	*
	* Modify the main method below to launch your application.
	* Run Sleak.
	*
	*/
	public class Sleak {
	List list;
	Canvas canvas;
	Button enableTracking, snapshot, diff, stackTrace, saveAs, save;
	Text text;
	Label label;

	String filterPath = "";
	String fileName = "sleakout";
	String selectedName = null;
	boolean incrementFileNames = true;
	boolean saveImages = true;
	int fileCount = 0;

	Object [] oldObjects = new Object [0];
	Error [] oldErrors = new Error [0];
	Object [] objects = new Object [0];
	Error [] errors = new Error [0];

	public static void main (String [] args) {
	DeviceData data = new DeviceData();
	data.tracking = true;
	Display display = new Display (data);
	Sleak sleak = new Sleak ();
	Shell shell = new Shell(display);
	shell.setText ("S-Leak");
	Point size = shell.getSize ();
	shell.setSize (size.x / 2, size.y / 2);
	sleak.create (shell);
	shell.open();

	// Launch your application here
	// e.g.
	// Shell shell = new Shell(display);
	// Button button1 = new Button(shell, SWT.PUSH);
	// button1.setBounds(10, 10, 100, 50);
	// button1.setText("Hello World");
	// Image image = new Image(display, 20, 20);
	// Button button2 = new Button(shell, SWT.PUSH);
	// button2.setBounds(10, 70, 100, 50);
	// button2.setImage(image);
	// shell.open();

	while (!shell.isDisposed ()) {
	if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
	}

	public void create (Composite parent) {
	list = new List (parent, SWT.BORDER \| SWT.V_SCROLL);
	list.addListener (SWT.Selection, event -> refreshObject ());
	text = new Text (parent, SWT.BORDER \| SWT.H_SCROLL \| SWT.V_SCROLL);
	canvas = new Canvas (parent, SWT.BORDER);
	canvas.addListener (SWT.Paint, event -> paintCanvas (event));
	enableTracking = new Button (parent, SWT.CHECK);
	enableTracking.setText ("Enable");
	enableTracking.setToolTipText("Enable Device resource tracking. Only resources allocated once enabled will be tracked. To track devices created before view is created, turn on tracing options, see https://www.eclipse.org/swt/tools.php");
	enableTracking.addListener (SWT.Selection, e -> toggleEnableTracking ());
	enableTracking.setSelection(enableTracking.getDisplay().isTracking());
	stackTrace = new Button (parent, SWT.CHECK);
	stackTrace.setText ("Stack");
	stackTrace.addListener (SWT.Selection, e -> toggleStackTrace ());
	snapshot = new Button (parent, SWT.PUSH);
	snapshot.setText ("Snap");
	snapshot.addListener (SWT.Selection, event -> refreshAll ());
	diff = new Button (parent, SWT.PUSH);
	diff.setText ("Diff");
	diff.addListener (SWT.Selection, event -> refreshDifference ());
	label = new Label (parent, SWT.BORDER);
	label.setText ("0 object(s)");
	saveAs = new Button (parent, SWT.PUSH);
	saveAs.setText ("Save As...");
	saveAs.setToolTipText("Saves the contents of the list to a file, optionally with the stack traces if selected.");
	saveAs.addListener (SWT.Selection, event -> saveToFile (true));
	save = new Button (parent, SWT.PUSH);
	save.setText ("Save");
	save.setToolTipText("Saves to the previously selected file.");
	save.addListener (SWT.Selection, event -> saveToFile (false));
	parent.addListener (SWT.Resize, e -> layout ());
	stackTrace.setSelection (false);
	text.setVisible (false);
	layout();
	}

	private void toggleEnableTracking() {
	Display display = enableTracking.getDisplay();
	boolean tracking = display.isTracking();
	display.setTracking(!tracking);
	}

	void refreshLabel () {
	int cursors = 0, fonts = 0, gcs = 0, images = 0;
	int paths = 0, patterns = 0, regions = 0, textLayouts = 0, transforms= 0;
	for (Object object : objects) {
	if (object instanceof Cursor) cursors++;
	if (object instanceof Font) fonts++;
	if (object instanceof GC) gcs++;
	if (object instanceof Image) images++;
	if (object instanceof Path) paths++;
	if (object instanceof Pattern) patterns++;
	if (object instanceof Region) regions++;
	if (object instanceof TextLayout) textLayouts++;
	if (object instanceof Transform) transforms++;
	}
	String string = "";
	if (cursors != 0) string += cursors + " Cursor(s)\n";
	if (fonts != 0) string += fonts + " Font(s)\n";
	if (gcs != 0) string += gcs + " GC(s)\n";
	if (images != 0) string += images + " Image(s)\n";
	if (paths != 0) string += paths + " Paths(s)\n";
	if (patterns != 0) string += patterns + " Pattern(s)\n";
	if (regions != 0) string += regions + " Region(s)\n";
	if (textLayouts != 0) string += textLayouts + " TextLayout(s)\n";
	if (transforms != 0) string += transforms + " Transform(s)\n";
	if (string.length () != 0) {
	string = string.substring (0, string.length () - 1);
	}
	label.setText (string);
	}

	void refreshDifference () {
	Display display = canvas.getDisplay();
	DeviceData info = display.getDeviceData ();
	if (!info.tracking) {
	Shell shell = canvas.getShell();
	MessageBox dialog = new MessageBox (shell, SWT.ICON_WARNING \| SWT.YES \| SWT.NO);
	dialog.setText (shell.getText ());
	dialog.setMessage ("Warning: Device is not tracking resource allocation\nWould you like to enable tracking now for future created resources?");
	if (SWT.YES == dialog.open ()) {
	enableTracking.setSelection(true);
	toggleEnableTracking();
	}
	}
	int size = 0;
	for (int i = 0; i < info.objects.length; i++) {
	if (!(info.objects[i] instanceof Color)) {
	size++;
	}
	}
	Object [] newObjects = new Object[size];
	Error [] newErrors = new Error[size];
	for (int i = 0, out_i = 0; i < info.objects.length; i++) {
	// Bug 563018: Colors don't require disposal, so exclude
	// them from the list of allocated objects.
	if (!(info.objects[i] instanceof Color)) {
	newObjects[out_i] = info.objects[i];
	newErrors[out_i] = info.errors[i];
	out_i++;
	}
	}
	Object [] diffObjects = new Object [newObjects.length];
	Error [] diffErrors = new Error [newErrors.length];
	int count = 0;
	for (int i=0; i<newObjects.length; i++) {
	int index = 0;
	while (index < oldObjects.length) {
	if (newObjects [i] == oldObjects [index]) break;
	index++;
	}
	if (index == oldObjects.length) {
	diffObjects [count] = newObjects [i];
	diffErrors [count] = newErrors [i];
	count++;
	}
	}
	objects = new Object [count];
	errors = new Error [count];
	System.arraycopy (diffObjects, 0, objects, 0, count);
	System.arraycopy (diffErrors, 0, errors, 0, count);
	list.removeAll ();
	text.setText ("");
	canvas.redraw ();
	for (Object object : objects) {
	list.add (object.toString());
	}
	refreshLabel ();
	layout ();
	}

	private void saveToFile(boolean prompt) {
	if (prompt \|\| selectedName == null) {
	FileDialog dialog = new FileDialog(saveAs.getShell(), SWT.SAVE);
	dialog.setFilterPath(filterPath);
	dialog.setFileName(fileName);
	dialog.setOverwrite(true);
	selectedName = dialog.open();
	fileCount = 0;
	if (selectedName == null) {
	return;
	}
	filterPath = dialog.getFilterPath();
	fileName = dialog.getFileName();

	MessageBox msg = new MessageBox(saveAs.getShell(), SWT.ICON_QUESTION \| SWT.YES \| SWT.NO);
	msg.setText("Append incrementing file counter?");
	msg.setMessage("Append an incrementing file count to the file name on each save, starting at 000?");
	incrementFileNames = msg.open() == SWT.YES;

	msg = new MessageBox(saveAs.getShell(), SWT.ICON_QUESTION \| SWT.YES \| SWT.NO);
	msg.setText("Save images for each resource?");
	msg.setMessage("Save an image (png) for each resource?");
	saveImages = msg.open() == SWT.YES;
	}

	String fileName = selectedName;
	if (incrementFileNames) {
	fileName = String.format("%s_%03d", fileName, fileCount++);
	}
	try (PrintWriter file = new PrintWriter(new FileOutputStream(fileName))) {

	for (int i = 0; i < errors.length; i++) {
	Object object = objects[i];
	Error error = errors[i];
	file.print(object.toString());
	if (saveImages) {
	String suffix = String.format("%05d.png", i);
	String pngName = String.format("%s_%s", fileName, suffix);
	Image image = new Image(saveAs.getDisplay(), 100, 100);
	try {
	GC gc = new GC(image);
	try {
	draw(gc, object);
	} finally {
	gc.dispose();
	}
	ImageLoader loader = new ImageLoader();
	loader.data = new ImageData[] { image.getImageData() };
	loader.save(pngName, SWT.IMAGE_PNG);
	} finally {
	image.dispose();
	}

	file.print(" -> ");
	file.print(suffix);
	}
	file.println();
	if (stackTrace.getSelection()) {
	error.printStackTrace(file);
	System.out.println();
	}
	}
	} catch (IOException e1) {
	MessageBox msg = new MessageBox(saveAs.getShell(), SWT.ICON_ERROR \| SWT.OK);
	msg.setText("Failed to save");
	msg.setMessage("Failed to save S-Leak file.\n" + e1.getMessage());
	msg.open();
	}
	}

	void toggleStackTrace () {
	refreshObject ();
	layout ();
	}

	void paintCanvas (Event event) {
	canvas.setCursor (null);
	int index = list.getSelectionIndex ();
	if (index == -1) return;
	GC gc = event.gc;
	Object object = objects [index];
	draw(gc, object);
	}

	void draw(GC gc, Object object) {
	if (object instanceof Cursor) {
	if (((Cursor)object).isDisposed ()) return;
	canvas.setCursor ((Cursor) object);
	return;
	}
	if (object instanceof Font) {
	if (((Font)object).isDisposed ()) return;
	gc.setFont ((Font) object);
	String string = "";
	String lf = text.getLineDelimiter ();
	for (FontData data : gc.getFont ().getFontData ()) {
	String style = "NORMAL";
	int bits = data.getStyle ();
	if (bits != 0) {
	if ((bits & SWT.BOLD) != 0) style = "BOLD ";
	if ((bits & SWT.ITALIC) != 0) style += "ITALIC";
	}
	string += data.getName () + " " + data.getHeight () + " " + style + lf;
	}
	gc.drawString (string, 0, 0);
	return;
	}
	//NOTHING TO DRAW FOR GC
	// if (object instanceof GC) {
	// return;
	// }
	if (object instanceof Image) {
	if (((Image)object).isDisposed ()) return;
	gc.drawImage ((Image) object, 0, 0);
	return;
	}
	if (object instanceof Path) {
	if (((Path)object).isDisposed ()) return;
	gc.drawPath ((Path) object);
	return;
	}
	if (object instanceof Pattern) {
	if (((Pattern)object).isDisposed ()) return;
	gc.setBackgroundPattern ((Pattern)object);
	gc.fillRectangle (canvas.getClientArea ());
	gc.setBackgroundPattern (null);
	return;
	}
	if (object instanceof Region) {
	if (((Region)object).isDisposed ()) return;
	String string = ((Region)object).getBounds().toString();
	gc.drawString (string, 0, 0);
	return;
	}
	if (object instanceof TextLayout) {
	if (((TextLayout)object).isDisposed ()) return;
	((TextLayout)object).draw (gc, 0, 0);
	return;
	}
	if (object instanceof Transform) {
	if (((Transform)object).isDisposed ()) return;
	String string = ((Transform)object).toString();
	gc.drawString (string, 0, 0);
	return;
	}
	}

	void refreshObject () {
	int index = list.getSelectionIndex ();
	if (index == -1) return;
	if (stackTrace.getSelection ()) {
	ByteArrayOutputStream stream = new ByteArrayOutputStream ();
	PrintStream s = new PrintStream (stream);
	errors [index].printStackTrace (s);
	text.setText (stream.toString ());
	text.setVisible (true);
	canvas.setVisible (false);
	} else {
	canvas.setVisible (true);
	text.setVisible (false);
	canvas.redraw ();
	}
	}

	void refreshAll () {
	oldObjects = new Object [0];
	oldErrors = new Error [0];
	refreshDifference ();
	oldObjects = objects;
	oldErrors = errors;
	}

	void layout () {
	Composite parent = canvas.getParent();
	Rectangle rect = parent.getClientArea ();
	int width = 0;
	String [] items = list.getItems ();
	GC gc = new GC (list);
	for (int i=0; i<objects.length; i++) {
	width = Math.max (width, gc.stringExtent (items [i]).x);
	}
	gc.dispose ();
	Point enableTrackingSize = enableTracking.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point snapshotSize = snapshot.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point diffSize = diff.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point stackSize = stackTrace.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point labelSize = label.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point saveAsSize = saveAs.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	Point saveSize = save.computeSize (SWT.DEFAULT, SWT.DEFAULT);
	width = Math.max (enableTrackingSize.x, width);
	width = Math.max (snapshotSize.x, Math.max (diffSize.x, Math.max (stackSize.x, width)));
	width = Math.max (saveAsSize.x, Math.max (saveSize.x, width));
	width = Math.max (labelSize.x, list.computeSize (width, SWT.DEFAULT).x);
	width = Math.max (64, width);
	enableTracking.setBounds (0, 0, width, enableTrackingSize.y);
	snapshot.setBounds (0, enableTrackingSize.y, width, snapshotSize.y);
	diff.setBounds (0, enableTrackingSize.y + snapshotSize.y, width, diffSize.y);
	stackTrace.setBounds (0, enableTrackingSize.y + snapshotSize.y + diffSize.y, width, stackSize.y);
	label.setBounds (0, rect.height - saveSize.y - saveAsSize.y - labelSize.y, width, labelSize.y);
	saveAs.setBounds (0, rect.height - saveSize.y - saveAsSize.y, width, saveAsSize.y);
	save.setBounds (0, rect.height - saveSize.y, width, saveSize.y);
	int height = enableTrackingSize.y + snapshotSize.y + diffSize.y + stackSize.y;
	list.setBounds (0, height, width, rect.height - height - labelSize.y - saveAsSize.y -saveSize.y);
	text.setBounds (width, 0, rect.width - width, rect.height);
	canvas.setBounds (width, 0, rect.width - width, rect.height);
	}

	}