bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/widgets/Link.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2008 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.widgets;

 import org.eclipse.swt.internal.wpf.*;
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.events.*;

 /**
  * Instances of this class represent a selectable
  * user interface object that displays a text with
  * links.
  * <p>
  * <dl>
  * <dt><b>Styles:</b></dt>
  * <dd>(none)</dd>
  * <dt><b>Events:</b></dt>
  * <dd>Selection</dd>
  * </dl>
  * <p>
  * IMPORTANT: This class is <em>not</em> intended to be subclassed.
  * </p>
  *
  * @see <a href="http://www.eclipse.org/swt/snippets/#link">Link snippets</a>
  * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
  * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
  *
  * @since 3.1
  * @noextend This class is not intended to be subclassed by clients.
  */
 public class Link extends Control {
 	Point [] offsets;
 	Point selection;
 	String [] ids;
 	String text;
 	private int[] mnemonics;

 /**
  * Constructs a new instance of this class given its parent
  * and a style value describing its behavior and appearance.
  * <p>
  * The style value is either one of the style constants defined in
  * class <code>SWT</code> which is applicable to instances of this
  * class, or must be built by <em>bitwise OR</em>'ing together
  * (that is, using the <code>int</code> "|" operator) two or more
  * of those <code>SWT</code> style constants. The class description
  * lists the style constants that are applicable to the class.
  * Style bits are also inherited from superclasses.
  * </p>
  *
  * @param parent a composite control which will be the parent of the new instance (cannot be null)
  * @param style the style of control to construct
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
  *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
  * </ul>
  *
  * @see Widget#checkSubclass
  * @see Widget#getStyle
  */
 public Link (Composite parent, int style) {
 	super (parent, style);
 }

 /**
  * Adds the listener to the collection of listeners who will
  * be notified when the control is selected by the user, by sending
  * it one of the messages defined in the <code>SelectionListener</code>
  * interface.
  * <p>
  * <code>widgetSelected</code> is called when the control is selected by the user.
  * <code>widgetDefaultSelected</code> is not called.
  * </p>
  *
  * @param listener the listener which should be notified
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see SelectionListener
  * @see #removeSelectionListener
  * @see SelectionEvent
  */
 public void addSelectionListener (SelectionListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Selection, typedListener);
 	addListener (SWT.DefaultSelection, typedListener);
 }

 int backgroundProperty () {
 	return OS.TextBlock_BackgroundProperty ();
 }

 void createHandle () {
 	state |= THEME_BACKGROUND;
 	handle = OS.gcnew_TextBlock ();
 	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
 }

 int defaultBackground () {
 	return OS.SystemColors_ControlColor;
 }

 String getNameText () {
 	return getText ();
 }

 /**
  * Returns the receiver's text, which will be an empty
  * string if it has never been set.
  *
  * @return the receiver's text
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public String getText () {
 	checkWidget ();
 	return text;
 }

 void HandleClick (int sender, int e) {
 	if (!checkEvent (e)) return;
 	int source = OS.RoutedEventArgs_Source (e);
 	int i = OS.FrameworkContentElement_Tag (source);
 	OS.GCHandle_Free (source);
 	Event event = new Event ();
 	event.text = ids [i];
 	sendEvent (SWT.Selection, event);
 }

 String parse (String string) {
 	int length = string.length ();
 	offsets = new Point [length / 4];
 	ids = new String [length / 4];
 	mnemonics = new int [length / 4 + 1];
 	StringBuffer result = new StringBuffer ();
 	char [] buffer = new char [length];
 	string.getChars (0, string.length (), buffer, 0);
 	int index = 0, state = 0, linkIndex = 0;
 	int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0;
 	while (index < length) {
 		char c = Character.toLowerCase (buffer [index]);
 		switch (state) {
 			case 0:
 				if (c == '<') {
 					tagStart = index;
 					state++;
 				}
 				break;
 			case 1:
 				if (c == 'a') state++;
 				break;
 			case 2:
 				switch (c) {
 					case 'h':
 						state = 7;
 						break;
 					case '>':
 						linkStart = index  + 1;
 						state++;
 						break;
 					default:
 						if (Character.isWhitespace(c)) break;
 						else state = 13;
 				}
 				break;
 			case 3:
 				if (c == '<') {
 					endtagStart = index;
 					state++;
 				}
 				break;
 			case 4:
 				state = c == '/' ? state + 1 : 3;
 				break;
 			case 5:
 				state = c == 'a' ? state + 1 : 3;
 				break;
 			case 6:
 				if (c == '>') {
 					mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result);
 					int offset = result.length ();
 					parseMnemonics (buffer, linkStart, endtagStart, result);
 					offsets [linkIndex] = new Point (offset, result.length () - 1);
 					if (ids [linkIndex] == null) {
 						ids [linkIndex] = new String (buffer, linkStart, endtagStart - linkStart);
 					}
 					linkIndex++;
 					start = tagStart = linkStart = endtagStart = refStart = index + 1;
 					state = 0;
 				} else {
 					state = 3;
 				}
 				break;
 			case 7:
 				state = c == 'r' ? state + 1 : 0;
 				break;
 			case 8:
 				state = c == 'e' ? state + 1 : 0;
 				break;
 			case 9:
 				state = c == 'f' ? state + 1 : 0;
 				break;
 			case 10:
 				state = c == '=' ? state + 1 : 0;
 				break;
 			case 11:
 				if (c == '"') {
 					state++;
 					refStart = index + 1;
 				} else {
 					state = 0;
 				}
 				break;
 			case 12:
 				if (c == '"') {
 					ids[linkIndex] = new String (buffer, refStart, index - refStart);
 					state = 2;
 				}
 				break;
 			case 13:
 				if (Character.isWhitespace (c)) {
 					state = 0;
 				} else if (c == '='){
 					state++;
 				}
 				break;
 			case 14:
 				state = c == '"' ? state + 1 : 0;
 				break;
 			case 15:
 				if (c == '"') state = 2;
 				break;
 			default:
 				state = 0;
 				break;
 		}
 		index++;
 	}
 	if (start < length) {
 		int tmp = parseMnemonics (buffer, start, tagStart, result);
 		int mnemonic = parseMnemonics (buffer, Math.max (tagStart, linkStart), length, result);
 		if (mnemonic == -1) mnemonic = tmp;
 		mnemonics [linkIndex] = mnemonic;
 	} else {
 		mnemonics [linkIndex] = -1;
 	}
 	if (offsets.length != linkIndex) {
 		Point [] newOffsets = new Point [linkIndex];
 		System.arraycopy (offsets, 0, newOffsets, 0, linkIndex);
 		offsets = newOffsets;
 		String [] newIDs = new String [linkIndex];
 		System.arraycopy (ids, 0, newIDs, 0, linkIndex);
 		ids = newIDs;
 		int [] newMnemonics = new int [linkIndex + 1];
 		System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1);
 		mnemonics = newMnemonics;
 	}
 	return result.toString ();
 }

 int parseMnemonics (char [] buffer, int start, int end, StringBuffer result) {
 	int mnemonic = -1, index = start;
 	while (index < end) {
 		if (buffer [index] == '&') {
 			if (index + 1 < end && buffer [index + 1] == '&') {
 				result.append (buffer [index]);
 				index++;
 			} else {
 				mnemonic = result.length();
 			}
 		} else {
 			result.append (buffer [index]);
 		}
 		index++;
 	}
 	return mnemonic;
 }

 /**
  * Removes the listener from the collection of listeners who will
  * be notified when the control is selected by the user.
  *
  * @param listener the listener which should no longer be notified
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see SelectionListener
  * @see #addSelectionListener
  */
 public void removeSelectionListener (SelectionListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Selection, listener);
 	eventTable.unhook (SWT.DefaultSelection, listener);
 }

 void setFont (int font, double size) {
 	if (font != 0) {
 		int fontFamily = OS.Typeface_FontFamily( font);
 		int style = OS.Typeface_Style (font);
 		int weight = OS.Typeface_Weight (font);
 		int stretch = OS.Typeface_Stretch (font);
 		OS.TextBlock_FontFamily (handle, fontFamily);
 		OS.TextBlock_FontStyle (handle, style);
 		OS.TextBlock_FontWeight (handle, weight);
 		OS.TextBlock_FontStretch (handle, stretch);
 		OS.TextBlock_FontSize (handle, size);
 		OS.GCHandle_Free (fontFamily);
 		OS.GCHandle_Free (style);
 		OS.GCHandle_Free (weight);
 		OS.GCHandle_Free (stretch);
 	} else {
 		int property = OS.TextBlock_FontFamilyProperty ();
 		OS.DependencyObject_ClearValue (handle, property);
 		OS.GCHandle_Free (property);
 		property = OS.TextBlock_FontStyleProperty ();
 		OS.DependencyObject_ClearValue (handle, property);
 		OS.GCHandle_Free (property);
 		property = OS.TextBlock_FontWeightProperty ();
 		OS.DependencyObject_ClearValue (handle, property);
 		OS.GCHandle_Free (property);
 		property = OS.TextBlock_FontStretchProperty ();
 		OS.DependencyObject_ClearValue (handle, property);
 		OS.GCHandle_Free (property);
 		property = OS.TextBlock_FontSizeProperty ();
 		OS.DependencyObject_ClearValue (handle, property);
 		OS.GCHandle_Free (property);
 	}
 }

 void setForegroundBrush (int brush) {
 //TODO
 }

 /**
  * Sets the receiver's text.
  * <p>
  * The string can contain both regular text and hyperlinks.  A hyperlink
  * is delimited by an anchor tag, &lt;A&gt; and &lt;/A&gt;.  Within an
  * anchor, a single HREF attribute is supported.  When a hyperlink is
  * selected, the text field of the selection event contains either the
  * text of the hyperlink or the value of its HREF, if one was specified.
  * In the rare case of identical hyperlinks within the same string, the
  * HREF attribute can be used to distinguish between them.  The string may
  * include the mnemonic character and line delimiters. The only delimiter
  * the HREF attribute supports is the quotation mark (").
  * </p>
  *
  * @param string the new text
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the text is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setText (String string) {
 	checkWidget ();
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (string.equals (text)) return;
 	text = string;
 	String parsed = parse (string);
 	int inlines = OS.TextBlock_Inlines (handle);
 	OS.InlineCollection_Clear (inlines);
 	int start = 0, end = parsed.length ();
 	int offsetIndex = 0;
 	while (start < end) {
 		Point point = offsetIndex < offsets.length ? offsets [offsetIndex] : null;
 		if (point == null) {
 			String substring = parsed.substring (start, end);
 			int stringPtr = createDotNetString (substring, false);
 			if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
 			int run = OS.gcnew_Run ();
 			if (run == 0) error(SWT.ERROR_NO_HANDLES);
 			OS.Run_Text (run, stringPtr);
 			OS.InlineCollection_Add (inlines, run);
 			OS.GCHandle_Free (stringPtr);
 			OS.GCHandle_Free (run);
 			start = end;
 		} else {
 			if (start < point.x) {
 				String substring = parsed.substring (start, point.x);
 				int stringPtr = createDotNetString (substring, false);
 				if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
 				int run = OS.gcnew_Run ();
 				if (run == 0) error(SWT.ERROR_NO_HANDLES);
 				OS.Run_Text (run, stringPtr);
 				OS.InlineCollection_Add (inlines, run);
 				OS.GCHandle_Free (stringPtr);
 				OS.GCHandle_Free (run);
 				start = point.x;
 			} else {
 				String substring = parsed.substring (point.x, point.y+1);
 				int stringPtr = createDotNetString (substring, false);
 				if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
 				int run = OS.gcnew_Run ();
 				if (run == 0) error(SWT.ERROR_NO_HANDLES);
 				OS.Run_Text (run, stringPtr);
 				int hyperlink = OS.gcnew_Hyperlink (run);
 				OS.FrameworkContentElement_Tag (hyperlink, offsetIndex);
 				OS.InlineCollection_Add (inlines, hyperlink);
 				int handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleClick");
 				OS.Hyperlink_Click (hyperlink, handler);
 				OS.GCHandle_Free (handler);
 				OS.GCHandle_Free (stringPtr);
 				OS.GCHandle_Free (run);
 				OS.GCHandle_Free (hyperlink);
 				start = point.y+1;
 				offsetIndex++;
 			}
 		}
 	}
 	OS.GCHandle_Free (inlines);
 }

 int traversalCode (int key, int event) {
 //	if (offsets.length == 0) return 0;
 	int bits = super.traversalCode (key, event);
 //	if (key == OS.Key_Tab && focusIndex < offsets.length - 1) {
 //		return bits & ~SWT.TRAVERSE_TAB_NEXT;
 //	}
 //	if (key == OS.GDK_ISO_Left_Tab && focusIndex > 0) {
 //		return bits & ~SWT.TRAVERSE_TAB_PREVIOUS;
 //	}
 	//TODO
 	return bits;
 }
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2008 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.widgets;

	import org.eclipse.swt.internal.wpf.*;
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.events.*;

	/**
	* Instances of this class represent a selectable
	* user interface object that displays a text with
	* links.
	* <p>
	* <dl>
	* <dt><b>Styles:</b></dt>
	* <dd>(none)</dd>
	* <dt><b>Events:</b></dt>
	* <dd>Selection</dd>
	* </dl>
	* <p>
	* IMPORTANT: This class is <em>not</em> intended to be subclassed.
	* </p>
	*
	* @see <a href="http://www.eclipse.org/swt/snippets/#link">Link snippets</a>
	* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
	* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
	*
	* @since 3.1
	* @noextend This class is not intended to be subclassed by clients.
	*/
	public class Link extends Control {
	Point [] offsets;
	Point selection;
	String [] ids;
	String text;
	private int[] mnemonics;

	/**
	* Constructs a new instance of this class given its parent
	* and a style value describing its behavior and appearance.
	* <p>
	* The style value is either one of the style constants defined in
	* class <code>SWT</code> which is applicable to instances of this
	* class, or must be built by <em>bitwise OR</em>'ing together
	* (that is, using the <code>int</code> "\|" operator) two or more
	* of those <code>SWT</code> style constants. The class description
	* lists the style constants that are applicable to the class.
	* Style bits are also inherited from superclasses.
	* </p>
	*
	* @param parent a composite control which will be the parent of the new instance (cannot be null)
	* @param style the style of control to construct
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
	* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
	* </ul>
	*
	* @see Widget#checkSubclass
	* @see Widget#getStyle
	*/
	public Link (Composite parent, int style) {
	super (parent, style);
	}

	/**
	* Adds the listener to the collection of listeners who will
	* be notified when the control is selected by the user, by sending
	* it one of the messages defined in the <code>SelectionListener</code>
	* interface.
	* <p>
	* <code>widgetSelected</code> is called when the control is selected by the user.
	* <code>widgetDefaultSelected</code> is not called.
	* </p>
	*
	* @param listener the listener which should be notified
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see SelectionListener
	* @see #removeSelectionListener
	* @see SelectionEvent
	*/
	public void addSelectionListener (SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Selection, typedListener);
	addListener (SWT.DefaultSelection, typedListener);
	}

	int backgroundProperty () {
	return OS.TextBlock_BackgroundProperty ();
	}

	void createHandle () {
	state \|= THEME_BACKGROUND;
	handle = OS.gcnew_TextBlock ();
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	}

	int defaultBackground () {
	return OS.SystemColors_ControlColor;
	}

	String getNameText () {
	return getText ();
	}

	/**
	* Returns the receiver's text, which will be an empty
	* string if it has never been set.
	*
	* @return the receiver's text
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public String getText () {
	checkWidget ();
	return text;
	}

	void HandleClick (int sender, int e) {
	if (!checkEvent (e)) return;
	int source = OS.RoutedEventArgs_Source (e);
	int i = OS.FrameworkContentElement_Tag (source);
	OS.GCHandle_Free (source);
	Event event = new Event ();
	event.text = ids [i];
	sendEvent (SWT.Selection, event);
	}

	String parse (String string) {
	int length = string.length ();
	offsets = new Point [length / 4];
	ids = new String [length / 4];
	mnemonics = new int [length / 4 + 1];
	StringBuffer result = new StringBuffer ();
	char [] buffer = new char [length];
	string.getChars (0, string.length (), buffer, 0);
	int index = 0, state = 0, linkIndex = 0;
	int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0;
	while (index < length) {
	char c = Character.toLowerCase (buffer [index]);
	switch (state) {
	case 0:
	if (c == '<') {
	tagStart = index;
	state++;
	}
	break;
	case 1:
	if (c == 'a') state++;
	break;
	case 2:
	switch (c) {
	case 'h':
	state = 7;
	break;
	case '>':
	linkStart = index + 1;
	state++;
	break;
	default:
	if (Character.isWhitespace(c)) break;
	else state = 13;
	}
	break;
	case 3:
	if (c == '<') {
	endtagStart = index;
	state++;
	}
	break;
	case 4:
	state = c == '/' ? state + 1 : 3;
	break;
	case 5:
	state = c == 'a' ? state + 1 : 3;
	break;
	case 6:
	if (c == '>') {
	mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result);
	int offset = result.length ();
	parseMnemonics (buffer, linkStart, endtagStart, result);
	offsets [linkIndex] = new Point (offset, result.length () - 1);
	if (ids [linkIndex] == null) {
	ids [linkIndex] = new String (buffer, linkStart, endtagStart - linkStart);
	}
	linkIndex++;
	start = tagStart = linkStart = endtagStart = refStart = index + 1;
	state = 0;
	} else {
	state = 3;
	}
	break;
	case 7:
	state = c == 'r' ? state + 1 : 0;
	break;
	case 8:
	state = c == 'e' ? state + 1 : 0;
	break;
	case 9:
	state = c == 'f' ? state + 1 : 0;
	break;
	case 10:
	state = c == '=' ? state + 1 : 0;
	break;
	case 11:
	if (c == '"') {
	state++;
	refStart = index + 1;
	} else {
	state = 0;
	}
	break;
	case 12:
	if (c == '"') {
	ids[linkIndex] = new String (buffer, refStart, index - refStart);
	state = 2;
	}
	break;
	case 13:
	if (Character.isWhitespace (c)) {
	state = 0;
	} else if (c == '='){
	state++;
	}
	break;
	case 14:
	state = c == '"' ? state + 1 : 0;
	break;
	case 15:
	if (c == '"') state = 2;
	break;
	default:
	state = 0;
	break;
	}
	index++;
	}
	if (start < length) {
	int tmp = parseMnemonics (buffer, start, tagStart, result);
	int mnemonic = parseMnemonics (buffer, Math.max (tagStart, linkStart), length, result);
	if (mnemonic == -1) mnemonic = tmp;
	mnemonics [linkIndex] = mnemonic;
	} else {
	mnemonics [linkIndex] = -1;
	}
	if (offsets.length != linkIndex) {
	Point [] newOffsets = new Point [linkIndex];
	System.arraycopy (offsets, 0, newOffsets, 0, linkIndex);
	offsets = newOffsets;
	String [] newIDs = new String [linkIndex];
	System.arraycopy (ids, 0, newIDs, 0, linkIndex);
	ids = newIDs;
	int [] newMnemonics = new int [linkIndex + 1];
	System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1);
	mnemonics = newMnemonics;
	}
	return result.toString ();
	}

	int parseMnemonics (char [] buffer, int start, int end, StringBuffer result) {
	int mnemonic = -1, index = start;
	while (index < end) {
	if (buffer [index] == '&') {
	if (index + 1 < end && buffer [index + 1] == '&') {
	result.append (buffer [index]);
	index++;
	} else {
	mnemonic = result.length();
	}
	} else {
	result.append (buffer [index]);
	}
	index++;
	}
	return mnemonic;
	}

	/**
	* Removes the listener from the collection of listeners who will
	* be notified when the control is selected by the user.
	*
	* @param listener the listener which should no longer be notified
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see SelectionListener
	* @see #addSelectionListener
	*/
	public void removeSelectionListener (SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection, listener);
	}

	void setFont (int font, double size) {
	if (font != 0) {
	int fontFamily = OS.Typeface_FontFamily( font);
	int style = OS.Typeface_Style (font);
	int weight = OS.Typeface_Weight (font);
	int stretch = OS.Typeface_Stretch (font);
	OS.TextBlock_FontFamily (handle, fontFamily);
	OS.TextBlock_FontStyle (handle, style);
	OS.TextBlock_FontWeight (handle, weight);
	OS.TextBlock_FontStretch (handle, stretch);
	OS.TextBlock_FontSize (handle, size);
	OS.GCHandle_Free (fontFamily);
	OS.GCHandle_Free (style);
	OS.GCHandle_Free (weight);
	OS.GCHandle_Free (stretch);
	} else {
	int property = OS.TextBlock_FontFamilyProperty ();
	OS.DependencyObject_ClearValue (handle, property);
	OS.GCHandle_Free (property);
	property = OS.TextBlock_FontStyleProperty ();
	OS.DependencyObject_ClearValue (handle, property);
	OS.GCHandle_Free (property);
	property = OS.TextBlock_FontWeightProperty ();
	OS.DependencyObject_ClearValue (handle, property);
	OS.GCHandle_Free (property);
	property = OS.TextBlock_FontStretchProperty ();
	OS.DependencyObject_ClearValue (handle, property);
	OS.GCHandle_Free (property);
	property = OS.TextBlock_FontSizeProperty ();
	OS.DependencyObject_ClearValue (handle, property);
	OS.GCHandle_Free (property);
	}
	}

	void setForegroundBrush (int brush) {
	//TODO
	}

	/**
	* Sets the receiver's text.
	* <p>
	* The string can contain both regular text and hyperlinks. A hyperlink
	* is delimited by an anchor tag, <A> and </A>. Within an
	* anchor, a single HREF attribute is supported. When a hyperlink is
	* selected, the text field of the selection event contains either the
	* text of the hyperlink or the value of its HREF, if one was specified.
	* In the rare case of identical hyperlinks within the same string, the
	* HREF attribute can be used to distinguish between them. The string may
	* include the mnemonic character and line delimiters. The only delimiter
	* the HREF attribute supports is the quotation mark (").
	* </p>
	*
	* @param string the new text
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the text is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setText (String string) {
	checkWidget ();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (string.equals (text)) return;
	text = string;
	String parsed = parse (string);
	int inlines = OS.TextBlock_Inlines (handle);
	OS.InlineCollection_Clear (inlines);
	int start = 0, end = parsed.length ();
	int offsetIndex = 0;
	while (start < end) {
	Point point = offsetIndex < offsets.length ? offsets [offsetIndex] : null;
	if (point == null) {
	String substring = parsed.substring (start, end);
	int stringPtr = createDotNetString (substring, false);
	if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
	int run = OS.gcnew_Run ();
	if (run == 0) error(SWT.ERROR_NO_HANDLES);
	OS.Run_Text (run, stringPtr);
	OS.InlineCollection_Add (inlines, run);
	OS.GCHandle_Free (stringPtr);
	OS.GCHandle_Free (run);
	start = end;
	} else {
	if (start < point.x) {
	String substring = parsed.substring (start, point.x);
	int stringPtr = createDotNetString (substring, false);
	if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
	int run = OS.gcnew_Run ();
	if (run == 0) error(SWT.ERROR_NO_HANDLES);
	OS.Run_Text (run, stringPtr);
	OS.InlineCollection_Add (inlines, run);
	OS.GCHandle_Free (stringPtr);
	OS.GCHandle_Free (run);
	start = point.x;
	} else {
	String substring = parsed.substring (point.x, point.y+1);
	int stringPtr = createDotNetString (substring, false);
	if (stringPtr == 0) error(SWT.ERROR_NO_HANDLES);
	int run = OS.gcnew_Run ();
	if (run == 0) error(SWT.ERROR_NO_HANDLES);
	OS.Run_Text (run, stringPtr);
	int hyperlink = OS.gcnew_Hyperlink (run);
	OS.FrameworkContentElement_Tag (hyperlink, offsetIndex);
	OS.InlineCollection_Add (inlines, hyperlink);
	int handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleClick");
	OS.Hyperlink_Click (hyperlink, handler);
	OS.GCHandle_Free (handler);
	OS.GCHandle_Free (stringPtr);
	OS.GCHandle_Free (run);
	OS.GCHandle_Free (hyperlink);
	start = point.y+1;
	offsetIndex++;
	}
	}
	}
	OS.GCHandle_Free (inlines);
	}

	int traversalCode (int key, int event) {
	// if (offsets.length == 0) return 0;
	int bits = super.traversalCode (key, event);
	// if (key == OS.Key_Tab && focusIndex < offsets.length - 1) {
	// return bits & ~SWT.TRAVERSE_TAB_NEXT;
	// }
	// if (key == OS.GDK_ISO_Left_Tab && focusIndex > 0) {
	// return bits & ~SWT.TRAVERSE_TAB_PREVIOUS;
	// }
	//TODO
	return bits;
	}
	}