bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Button.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.widgets;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved
  */

 import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.gtk.*;
 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
  * issues notification when pressed and released.
  * <dl>
  * <dt><b>Styles:</b></dt>
  * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd>
  * <dd>LEFT, RIGHT, CENTER</dd>
  * <dt><b>Events:</b></dt>
  * <dd>Selection</dd>
  * </dl>
  * <p>
  * IMPORTANT: This class is intended to be subclassed <em>only</em>
  * within the SWT implementation.
  * </p>
  */
 public class Button extends Control {
 	int boxHandle;
 	Image image;
 	String text;

 /**
  * 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
  * for all SWT widget classes should include a comment which
  * describes the style constants which are applicable to the class.
  * </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 SWT
  * @see Widget#checkSubclass
  * @see Widget#getStyle
  */
 public Button (Composite parent, int style) {
 	super (parent, checkStyle (style));
 }

 static int checkStyle (int style) {
 	style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0);
 	if ((style & SWT.PUSH) != 0) {
 		return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0);
 	}
 	if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) != 0) {
 		return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0);
 	}
 	if ((style & SWT.ARROW) != 0) {
 		return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0);
 	}
 	return style;
 }

 /**
  * Adds the listener to the collection of listeners who will
  * be notified when the control is selected, 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.
  * <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);
 }

 void createHandle (int index) {
 	state |= HANDLE;
 	int bits = SWT.ARROW | SWT.TOGGLE | SWT.CHECK | SWT.RADIO | SWT.PUSH;

 	boxHandle = OS.gtk_event_box_new ();
 	if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES);
 	switch (style & bits) {
 		case SWT.ARROW:
 			handle = OS.gtk_button_new ();
 			int arrow = OS.gtk_arrow_new (OS.GTK_ARROW_UP, OS.GTK_SHADOW_OUT);
 			OS.gtk_container_add (handle, arrow);
 			OS.gtk_widget_show (arrow);
 			break;
 		case SWT.TOGGLE:
 			handle = OS.gtk_toggle_button_new ();
 			break;
 		case SWT.CHECK:
 			handle = OS.gtk_check_button_new ();
 			break;
 		case SWT.RADIO:
 			handle = OS.gtk_radio_button_new (parent.radioGroup());
 			break;
 		case SWT.PUSH:
 		default:
 			handle = OS.gtk_button_new ();
 			break;
 	}
 	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
 }

 void setHandleStyle() {}

 void configure() {
 	_connectParent();
 	OS.gtk_container_add (boxHandle, handle);
 }

 void showHandle() {
 	OS.gtk_widget_show (boxHandle);
 	OS.gtk_widget_show (handle);
 	OS.gtk_widget_realize (handle);
 }

 void hookEvents () {
 	super.hookEvents();
 	/*
 	* Feature in GTK.  For some reason, when the widget
 	* is a check or radio button, mouse move and key
 	* release events are not signaled.  The fix is to
 	* look for them on the parent.
 	*/
 	if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
 		int mask = OS.GDK_POINTER_MOTION_MASK | OS.GDK_KEY_RELEASE_MASK;
 		OS.gtk_widget_add_events (boxHandle, mask);
 		signal_connect_after (boxHandle, "motion_notify_event", SWT.MouseMove, 3);
 		signal_connect_after (boxHandle, "key_release_event", SWT.KeyUp, 3);
 	}
 	signal_connect (handle, "clicked", SWT.Selection, 2);
 }

 void register () {
 	super.register ();
 	WidgetTable.put (boxHandle, this);
 }

 void createWidget (int index) {
 	super.createWidget (index);
 	text = "";
 }

 int topHandle ()  { return boxHandle; }

 /**
  * Returns a value which describes the position of the
  * text or image in the receiver. The value will be one of
  * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>
  * unless the receiver is an <code>ARROW</code> button, in
  * which case, the alignment will indicate the direction of
  * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>,
  * <code>UP</code> or <code>DOWN</code>.
  *
  * @return the alignment
  *
  * @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 int getAlignment () {
 	checkWidget ();
 	if ((style & SWT.ARROW) != 0) {
 		if ((style & SWT.UP) != 0) return SWT.UP;
 		if ((style & SWT.DOWN) != 0) return SWT.DOWN;
 		if ((style & SWT.LEFT) != 0) return SWT.LEFT;
 		if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
 		return SWT.UP;
 	}
 	if ((style & SWT.LEFT) != 0) return SWT.LEFT;
 	if ((style & SWT.CENTER) != 0) return SWT.CENTER;
 	if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
 	return SWT.LEFT;
 }

 /**
  * Returns the receiver's image if it has one, or null
  * if it does not.
  *
  * @return the receiver's image
  *
  * @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 Image getImage () {
 	checkWidget ();
 	return image;
 }

 String getNameText () {
 	return getText ();
 }

 /**
  * Returns <code>true</code> if the receiver is selected,
  * and false otherwise.
  * <p>
  * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
  * it is selected when it is checked. When it is of type <code>TOGGLE</code>,
  * it is selected when it is pushed. If the receiver is of any other type,
  * this method returns false.
  *
  * @return the selection state
  *
  * @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 boolean getSelection () {
 	checkWidget ();
 	if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return false;
 	return OS.gtk_toggle_button_get_active (handle);
 }

 /**
  * Removes the listener from the collection of listeners who will
  * be notified when the control is selected.
  *
  * @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 #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);
 }

 /**
  * Controls how text, images and arrows will be displayed
  * in the receiver. The argument should be one of
  * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>
  * unless the receiver is an <code>ARROW</code> button, in
  * which case, the argument indicates the direction of
  * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>,
  * <code>UP</code> or <code>DOWN</code>.
  *
  * @param alignment the new alignment
  *
  * @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 setAlignment (int alignment) {
 	checkWidget ();
 	if ((style & SWT.ARROW) != 0) {
 		if ((style & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT)) == 0) return;
 		style &= ~(SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT);
 		style |= alignment & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT);
 		int arrow_type = OS.GTK_ARROW_UP;
 		switch (alignment) {
 			case SWT.UP:
 				arrow_type = OS.GTK_ARROW_UP;
 				break;
 			case SWT.DOWN:
 				arrow_type = OS.GTK_ARROW_DOWN;
 				break;
 			case SWT.LEFT:
 				arrow_type = OS.GTK_ARROW_LEFT;
 				break;
 			case SWT.RIGHT:
 				arrow_type = OS.GTK_ARROW_RIGHT;
 				break;
 		}
 		int list = OS.gtk_container_children (handle);
 		int arrow = OS.g_list_nth_data (list, 0);
 		OS.gtk_arrow_set (arrow, arrow_type, OS.GTK_SHADOW_OUT);
 		return;
 	}
 	if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return;
 	style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
 	style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
 	int list = OS.gtk_container_children (handle);
 	int label = OS.g_list_nth_data (list, 0);
 	if (label == 0) return;
 	boolean isText = OS.GTK_WIDGET_TYPE (handle) == OS.gtk_label_get_type ();
 	if ((style & SWT.LEFT) != 0) {
 		OS.gtk_misc_set_alignment (label, 0.0f, 0.5f);
 		if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_LEFT);
 		return;
 	}
 	if ((style & SWT.CENTER) != 0) {
 		OS.gtk_misc_set_alignment (label, 0.5f, 0.5f);
 		if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_CENTER);
 		return;
 	}
 	if ((style & SWT.RIGHT) != 0) {
 		OS.gtk_misc_set_alignment (label, 1.0f, 0.5f);
 		if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_RIGHT);
 		return;
 	}
 }

 /**
  * Sets the receiver's image to the argument, which may be
  * null indicating that no image should be displayed.
  *
  * @param image the image to display on the receiver (may be null)
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</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 setImage (Image image) {
 	checkWidget ();
 	this.image = image;
 	if ((style & SWT.ARROW) != 0) return;
 	int list = OS.gtk_container_children (handle);
 	if (list != 0) {
 		int widget = OS.g_list_nth_data (list, 0);
 		if (widget != 0) OS.gtk_widget_destroy (widget);
 	}
 	if (image != null) {
 		int pixmap = OS.gtk_pixmap_new (image.pixmap, image.mask);
 		OS.gtk_container_add (handle, pixmap);
 		OS.gtk_widget_show (pixmap);
 	}
 }

 /**
  * 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;
 }

 /**
  * Sets the selection state of the receiver, if it is of type <code>CHECK</code>,
  * <code>RADIO</code>, or <code>TOGGLE</code>.
  *
  * <p>
  * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
  * it is selected when it is checked. When it is of type <code>TOGGLE</code>,
  * it is selected when it is pushed.
  *
  * @param selected the new selection state
  *
  * @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 setSelection (boolean selected) {
 	checkWidget();
 	if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return;
 	OS.gtk_signal_handler_block_by_data (handle, SWT.Selection);
 	OS.gtk_toggle_button_set_active (handle, selected);
 	OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection);
 }

 /**
  * Sets the receiver's text.
  * <p>
  * This method sets the button label.  The label may include
  * the mnemonic character but must not contain line delimiters.
  * </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);
 	text = string;
 	if ((style & SWT.ARROW) != 0) return;
 	int length = string.length ();
 	char [] text = new char [length + 1];
 	char [] pattern = new char [length + 1];
 	string.getChars (0, length, text, 0);
 	int i = 0, j = 0;
 	while (i < length) {
 		pattern [j] = ' ';
 		if (text [i] == '&') {
 			i++;
 			if (i < length && text [i] != '&') {
 				pattern [j] = '_';
 			}
 		}
 		text [j++] = text [i++];
 	}
 	while (j < i) {
 		text [j] = pattern [j] = '\0';
 		j++;
 	}
 	int list = OS.gtk_container_children (handle);
 	if (list != 0) {
 		int widget = OS.g_list_nth_data (list, 0);
 		if (widget != 0) OS.gtk_widget_destroy (widget);
 	}
 	byte [] buffer1 = Converter.wcsToMbcs (null, text);
 	int label = OS.gtk_label_new (buffer1);
 	byte [] buffer2 = Converter.wcsToMbcs (null, pattern);
 	OS.gtk_label_set_pattern (label, buffer2);
 	OS.gtk_container_add (handle, label);
 	OS.gtk_widget_show (label);
 }

 int processSelection (int int0, int int1, int int2) {
 	postEvent(SWT.Selection);
 	return 0;
 }

 void deregister () {
 	super.deregister ();
 	WidgetTable.remove (boxHandle);
 }

 void releaseWidget () {
 	super.releaseWidget ();
 	image = null;
 	text = null;
 }

 void releaseHandle () {
 	super.releaseHandle ();
 	boxHandle = 0;
 }

 }
	package org.eclipse.swt.widgets;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved
	*/

	import org.eclipse.swt.internal.*;
	import org.eclipse.swt.internal.gtk.*;
	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
	* issues notification when pressed and released.
	* <dl>
	* <dt><b>Styles:</b></dt>
	* <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd>
	* <dd>LEFT, RIGHT, CENTER</dd>
	* <dt><b>Events:</b></dt>
	* <dd>Selection</dd>
	* </dl>
	* <p>
	* IMPORTANT: This class is intended to be subclassed <em>only</em>
	* within the SWT implementation.
	* </p>
	*/
	public class Button extends Control {
	int boxHandle;
	Image image;
	String text;

	/**
	* 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
	* for all SWT widget classes should include a comment which
	* describes the style constants which are applicable to the class.
	* </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 SWT
	* @see Widget#checkSubclass
	* @see Widget#getStyle
	*/
	public Button (Composite parent, int style) {
	super (parent, checkStyle (style));
	}

	static int checkStyle (int style) {
	style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0);
	if ((style & SWT.PUSH) != 0) {
	return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0);
	}
	if ((style & (SWT.CHECK \| SWT.RADIO \| SWT.TOGGLE)) != 0) {
	return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0);
	}
	if ((style & SWT.ARROW) != 0) {
	return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0);
	}
	return style;
	}

	/**
	* Adds the listener to the collection of listeners who will
	* be notified when the control is selected, 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.
	* <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);
	}

	void createHandle (int index) {
	state \|= HANDLE;
	int bits = SWT.ARROW \| SWT.TOGGLE \| SWT.CHECK \| SWT.RADIO \| SWT.PUSH;

	boxHandle = OS.gtk_event_box_new ();
	if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES);
	switch (style & bits) {
	case SWT.ARROW:
	handle = OS.gtk_button_new ();
	int arrow = OS.gtk_arrow_new (OS.GTK_ARROW_UP, OS.GTK_SHADOW_OUT);
	OS.gtk_container_add (handle, arrow);
	OS.gtk_widget_show (arrow);
	break;
	case SWT.TOGGLE:
	handle = OS.gtk_toggle_button_new ();
	break;
	case SWT.CHECK:
	handle = OS.gtk_check_button_new ();
	break;
	case SWT.RADIO:
	handle = OS.gtk_radio_button_new (parent.radioGroup());
	break;
	case SWT.PUSH:
	default:
	handle = OS.gtk_button_new ();
	break;
	}
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	}

	void setHandleStyle() {}

	void configure() {
	_connectParent();
	OS.gtk_container_add (boxHandle, handle);
	}

	void showHandle() {
	OS.gtk_widget_show (boxHandle);
	OS.gtk_widget_show (handle);
	OS.gtk_widget_realize (handle);
	}

	void hookEvents () {
	super.hookEvents();
	/*
	* Feature in GTK. For some reason, when the widget
	* is a check or radio button, mouse move and key
	* release events are not signaled. The fix is to
	* look for them on the parent.
	*/
	if ((style & (SWT.CHECK \| SWT.RADIO)) != 0) {
	int mask = OS.GDK_POINTER_MOTION_MASK \| OS.GDK_KEY_RELEASE_MASK;
	OS.gtk_widget_add_events (boxHandle, mask);
	signal_connect_after (boxHandle, "motion_notify_event", SWT.MouseMove, 3);
	signal_connect_after (boxHandle, "key_release_event", SWT.KeyUp, 3);
	}
	signal_connect (handle, "clicked", SWT.Selection, 2);
	}

	void register () {
	super.register ();
	WidgetTable.put (boxHandle, this);
	}

	void createWidget (int index) {
	super.createWidget (index);
	text = "";
	}

	int topHandle () { return boxHandle; }

	/**
	* Returns a value which describes the position of the
	* text or image in the receiver. The value will be one of
	* <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>
	* unless the receiver is an <code>ARROW</code> button, in
	* which case, the alignment will indicate the direction of
	* the arrow (one of <code>LEFT</code>, <code>RIGHT</code>,
	* <code>UP</code> or <code>DOWN</code>.
	*
	* @return the alignment
	*
	* @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 int getAlignment () {
	checkWidget ();
	if ((style & SWT.ARROW) != 0) {
	if ((style & SWT.UP) != 0) return SWT.UP;
	if ((style & SWT.DOWN) != 0) return SWT.DOWN;
	if ((style & SWT.LEFT) != 0) return SWT.LEFT;
	if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
	return SWT.UP;
	}
	if ((style & SWT.LEFT) != 0) return SWT.LEFT;
	if ((style & SWT.CENTER) != 0) return SWT.CENTER;
	if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
	return SWT.LEFT;
	}

	/**
	* Returns the receiver's image if it has one, or null
	* if it does not.
	*
	* @return the receiver's image
	*
	* @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 Image getImage () {
	checkWidget ();
	return image;
	}

	String getNameText () {
	return getText ();
	}

	/**
	* Returns <code>true</code> if the receiver is selected,
	* and false otherwise.
	* <p>
	* When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
	* it is selected when it is checked. When it is of type <code>TOGGLE</code>,
	* it is selected when it is pushed. If the receiver is of any other type,
	* this method returns false.
	*
	* @return the selection state
	*
	* @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 boolean getSelection () {
	checkWidget ();
	if ((style & (SWT.CHECK \| SWT.RADIO \| SWT.TOGGLE)) == 0) return false;
	return OS.gtk_toggle_button_get_active (handle);
	}

	/**
	* Removes the listener from the collection of listeners who will
	* be notified when the control is selected.
	*
	* @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 #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);
	}

	/**
	* Controls how text, images and arrows will be displayed
	* in the receiver. The argument should be one of
	* <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>
	* unless the receiver is an <code>ARROW</code> button, in
	* which case, the argument indicates the direction of
	* the arrow (one of <code>LEFT</code>, <code>RIGHT</code>,
	* <code>UP</code> or <code>DOWN</code>.
	*
	* @param alignment the new alignment
	*
	* @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 setAlignment (int alignment) {
	checkWidget ();
	if ((style & SWT.ARROW) != 0) {
	if ((style & (SWT.UP \| SWT.DOWN \| SWT.LEFT \| SWT.RIGHT)) == 0) return;
	style &= ~(SWT.UP \| SWT.DOWN \| SWT.LEFT \| SWT.RIGHT);
	style \|= alignment & (SWT.UP \| SWT.DOWN \| SWT.LEFT \| SWT.RIGHT);
	int arrow_type = OS.GTK_ARROW_UP;
	switch (alignment) {
	case SWT.UP:
	arrow_type = OS.GTK_ARROW_UP;
	break;
	case SWT.DOWN:
	arrow_type = OS.GTK_ARROW_DOWN;
	break;
	case SWT.LEFT:
	arrow_type = OS.GTK_ARROW_LEFT;
	break;
	case SWT.RIGHT:
	arrow_type = OS.GTK_ARROW_RIGHT;
	break;
	}
	int list = OS.gtk_container_children (handle);
	int arrow = OS.g_list_nth_data (list, 0);
	OS.gtk_arrow_set (arrow, arrow_type, OS.GTK_SHADOW_OUT);
	return;
	}
	if ((alignment & (SWT.LEFT \| SWT.RIGHT \| SWT.CENTER)) == 0) return;
	style &= ~(SWT.LEFT \| SWT.RIGHT \| SWT.CENTER);
	style \|= alignment & (SWT.LEFT \| SWT.RIGHT \| SWT.CENTER);
	int list = OS.gtk_container_children (handle);
	int label = OS.g_list_nth_data (list, 0);
	if (label == 0) return;
	boolean isText = OS.GTK_WIDGET_TYPE (handle) == OS.gtk_label_get_type ();
	if ((style & SWT.LEFT) != 0) {
	OS.gtk_misc_set_alignment (label, 0.0f, 0.5f);
	if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_LEFT);
	return;
	}
	if ((style & SWT.CENTER) != 0) {
	OS.gtk_misc_set_alignment (label, 0.5f, 0.5f);
	if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_CENTER);
	return;
	}
	if ((style & SWT.RIGHT) != 0) {
	OS.gtk_misc_set_alignment (label, 1.0f, 0.5f);
	if (isText) OS.gtk_label_set_justify (label, OS.GTK_JUSTIFY_RIGHT);
	return;
	}
	}

	/**
	* Sets the receiver's image to the argument, which may be
	* null indicating that no image should be displayed.
	*
	* @param image the image to display on the receiver (may be null)
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</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 setImage (Image image) {
	checkWidget ();
	this.image = image;
	if ((style & SWT.ARROW) != 0) return;
	int list = OS.gtk_container_children (handle);
	if (list != 0) {
	int widget = OS.g_list_nth_data (list, 0);
	if (widget != 0) OS.gtk_widget_destroy (widget);
	}
	if (image != null) {
	int pixmap = OS.gtk_pixmap_new (image.pixmap, image.mask);
	OS.gtk_container_add (handle, pixmap);
	OS.gtk_widget_show (pixmap);
	}
	}

	/**
	* 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;
	}

	/**
	* Sets the selection state of the receiver, if it is of type <code>CHECK</code>,
	* <code>RADIO</code>, or <code>TOGGLE</code>.
	*
	* <p>
	* When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
	* it is selected when it is checked. When it is of type <code>TOGGLE</code>,
	* it is selected when it is pushed.
	*
	* @param selected the new selection state
	*
	* @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 setSelection (boolean selected) {
	checkWidget();
	if ((style & (SWT.CHECK \| SWT.RADIO \| SWT.TOGGLE)) == 0) return;
	OS.gtk_signal_handler_block_by_data (handle, SWT.Selection);
	OS.gtk_toggle_button_set_active (handle, selected);
	OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection);
	}

	/**
	* Sets the receiver's text.
	* <p>
	* This method sets the button label. The label may include
	* the mnemonic character but must not contain line delimiters.
	* </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);
	text = string;
	if ((style & SWT.ARROW) != 0) return;
	int length = string.length ();
	char [] text = new char [length + 1];
	char [] pattern = new char [length + 1];
	string.getChars (0, length, text, 0);
	int i = 0, j = 0;
	while (i < length) {
	pattern [j] = ' ';
	if (text [i] == '&') {
	i++;
	if (i < length && text [i] != '&') {
	pattern [j] = '_';
	}
	}
	text [j++] = text [i++];
	}
	while (j < i) {
	text [j] = pattern [j] = '\0';
	j++;
	}
	int list = OS.gtk_container_children (handle);
	if (list != 0) {
	int widget = OS.g_list_nth_data (list, 0);
	if (widget != 0) OS.gtk_widget_destroy (widget);
	}
	byte [] buffer1 = Converter.wcsToMbcs (null, text);
	int label = OS.gtk_label_new (buffer1);
	byte [] buffer2 = Converter.wcsToMbcs (null, pattern);
	OS.gtk_label_set_pattern (label, buffer2);
	OS.gtk_container_add (handle, label);
	OS.gtk_widget_show (label);
	}

	int processSelection (int int0, int int1, int int2) {
	postEvent(SWT.Selection);
	return 0;
	}

	void deregister () {
	super.deregister ();
	WidgetTable.remove (boxHandle);
	}

	void releaseWidget () {
	super.releaseWidget ();
	image = null;
	text = null;
	}

	void releaseHandle () {
	super.releaseHandle ();
	boxHandle = 0;
	}

	}