--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Button.d	Thu Jan 10 05:17:47 2008 +0100
@@ -0,0 +1,771 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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
+ *******************************************************************************/
+module dwt.widgets.Button;
+
+import dwt.widgets.Control;
+
+class Button : Control {
+}
+
+/+
+import dwt.internal.*;
+import dwt.internal.gtk.*;
+import dwt.*;
+import dwt.graphics.*;
+import dwt.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>UP, DOWN, LEFT, RIGHT, CENTER</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Selection</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE
+ * may be specified.
+ * </p><p>
+ * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified.
+ * </p><p>
+ * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified
+ * when the ARROW style is specified.
+ * </p><p>
+ * IMPORTANT: This class is intended to be subclassed <em>only</em>
+ * within the SWT implementation.
+ * </p>
+ */
+public class Button extends Control {
+	int /*long*/ boxHandle, labelHandle, imageHandle, arrowHandle, groupHandle;
+	boolean selected;
+	ImageList imageList;
+	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
+ * 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 SWT#ARROW
+ * @see SWT#CHECK
+ * @see SWT#PUSH
+ * @see SWT#RADIO
+ * @see SWT#TOGGLE
+ * @see SWT#FLAT
+ * @see SWT#LEFT
+ * @see SWT#RIGHT
+ * @see SWT#CENTER
+ * @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 | SWT.TOGGLE)) != 0) {
+		return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0);
+	}
+	if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
+		return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0);
+	}
+	if ((style & SWT.ARROW) != 0) {
+		style |= SWT.NO_FOCUS;
+		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 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);
+}
+
+public Point computeSize (int wHint, int hHint, boolean changed) {
+	checkWidget ();
+	if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
+	if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
+	/*
+	* Feature in GTK, GtkCheckButton and GtkRadioButton allocate
+	* only the minimum size necessary for its child. This causes the child
+	* alignment to fail. The fix is to set the child size to the size
+	* of the button.
+	*/
+	forceResize ();
+	int [] reqWidth = null, reqHeight = null;
+	if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
+		reqWidth = new int [1];
+		reqHeight = new int [1];
+		OS.gtk_widget_get_size_request (boxHandle, reqWidth, reqHeight);
+		OS.gtk_widget_set_size_request (boxHandle, -1, -1);
+	}
+	Point size = computeNativeSize (handle, wHint, hHint, changed);
+	if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
+		OS.gtk_widget_set_size_request (boxHandle, reqWidth [0], reqHeight [0]);
+	}
+	if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) {
+		if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_CAN_DEFAULT) != 0) {
+			int /*long*/ [] buffer = new int /*long*/ [1];
+			GtkBorder border = new GtkBorder ();
+			OS.gtk_widget_style_get (handle, OS.default_border, buffer, 0);
+			if (buffer[0] != 0) {
+				OS.memmove (border, buffer[0], GtkBorder.sizeof);
+			} else {
+				/* Use the GTK+ default value of 1 for each. */
+				border.left = border.right = border.top = border.bottom = 1;
+			}
+			if (wHint != SWT.DEFAULT) size.x += border.left + border.right;
+			if (hHint != SWT.DEFAULT) size.y += border.top + border.bottom;
+		}
+	}
+	return size;
+}
+
+void createHandle (int index) {
+	state |= HANDLE;
+	if ((style & SWT.PUSH) == 0) state |= THEME_BACKGROUND;
+	int bits = SWT.ARROW | SWT.TOGGLE | SWT.CHECK | SWT.RADIO | SWT.PUSH;
+	fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0);
+	if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES);
+	OS.gtk_fixed_set_has_window (fixedHandle, true);
+	switch (style & bits) {
+		case SWT.ARROW:
+			int arrow_type = OS.GTK_ARROW_UP;
+			if ((style & SWT.UP) != 0) arrow_type = OS.GTK_ARROW_UP;
+			if ((style & SWT.DOWN) != 0) arrow_type = OS.GTK_ARROW_DOWN;
+            if ((style & SWT.LEFT) != 0) arrow_type = OS.GTK_ARROW_LEFT;
+            if ((style & SWT.RIGHT) != 0) arrow_type = OS.GTK_ARROW_RIGHT;
+			handle = OS.gtk_button_new ();
+			if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+			arrowHandle = OS.gtk_arrow_new (arrow_type, OS.GTK_SHADOW_OUT);
+			if (arrowHandle == 0) error (SWT.ERROR_NO_HANDLES);
+			break;
+		case SWT.TOGGLE:
+			handle = OS.gtk_toggle_button_new ();
+			if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+			break;
+		case SWT.CHECK:
+			handle = OS.gtk_check_button_new ();
+			if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+			break;
+		case SWT.RADIO:
+			/*
+			* Feature in GTK.  In GTK, radio button must always be part of
+			* a radio button group.  In a GTK radio group, one button is always
+			* selected.  This means that it is not possible to have a single
+			* radio button that is unselected.  This is necessary to allow
+			* applications to implement their own radio behavior or use radio
+			* buttons outside of radio groups.  The fix is to create a hidden
+			* radio button for each radio button we create and add them
+			* to the same group.  This allows the visible button to be
+			* unselected.
+			*/
+			groupHandle = OS.gtk_radio_button_new (0);
+			if (groupHandle == 0) error (SWT.ERROR_NO_HANDLES);
+			OS.g_object_ref (groupHandle);
+			OS.gtk_object_sink (groupHandle);
+			handle = OS.gtk_radio_button_new (OS.gtk_radio_button_get_group (groupHandle));
+			if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+			break;
+		case SWT.PUSH:
+		default:
+			handle = OS.gtk_button_new ();
+			if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+			OS.GTK_WIDGET_SET_FLAGS(handle, OS.GTK_CAN_DEFAULT);
+			break;
+	}
+	if ((style & SWT.ARROW) != 0) {
+		OS.gtk_container_add (handle, arrowHandle);
+	} else {
+		boxHandle = OS.gtk_hbox_new (false, 4);
+		if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES);
+		labelHandle = OS.gtk_label_new_with_mnemonic (null);
+		if (labelHandle == 0) error (SWT.ERROR_NO_HANDLES);
+		imageHandle = OS.gtk_image_new ();
+		if (imageHandle == 0) error (SWT.ERROR_NO_HANDLES);
+		OS.gtk_container_add (handle, boxHandle);
+		OS.gtk_container_add (boxHandle, imageHandle);
+		OS.gtk_container_add (boxHandle, labelHandle);
+	}
+	OS.gtk_container_add (fixedHandle, handle);
+
+	if ((style & SWT.ARROW) != 0) return;
+	_setAlignment (style & (SWT.LEFT | SWT.CENTER | SWT.RIGHT));
+}
+
+void createWidget (int index) {
+	super.createWidget (index);
+	text = "";
+}
+
+void deregister () {
+	super.deregister ();
+	if (boxHandle != 0) display.removeWidget (boxHandle);
+	if (labelHandle != 0) display.removeWidget (labelHandle);
+	if (imageHandle != 0) display.removeWidget (imageHandle);
+	if (arrowHandle != 0) display.removeWidget (arrowHandle);
+}
+
+int /*long*/ fontHandle () {
+	if (labelHandle != 0) return labelHandle;
+	return super.fontHandle ();
+}
+
+/**
+ * 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 in. 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);
+}
+
+/**
+ * Returns the receiver's text, which will be an empty
+ * string if it has never been set or if the receiver is
+ * an <code>ARROW</code> button.
+ *
+ * @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();
+	if ((style & SWT.ARROW) != 0) return "";
+	return text;
+}
+
+int /*long*/ gtk_button_press_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_button_press_event (widget, event);
+	if (result != 0) return result;
+	if ((style & SWT.RADIO) != 0) selected  = getSelection ();
+	return result;
+}
+
+int /*long*/ gtk_clicked (int /*long*/ widget) {
+	if ((style & SWT.RADIO) != 0) {
+		if ((parent.getStyle () & SWT.NO_RADIO_GROUP) != 0) {
+			setSelection (!selected);
+		} else {
+			selectRadio ();
+		}
+	}
+	postEvent (SWT.Selection);
+	return 0;
+}
+
+int /*long*/ gtk_focus_in_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_focus_in_event (widget, event);
+	// widget could be disposed at this point
+	if (handle == 0) return 0;
+	if ((style & SWT.PUSH) != 0 && OS.GTK_WIDGET_HAS_DEFAULT (handle)) {
+		Decorations menuShell = menuShell ();
+		menuShell.defaultButton = this;
+	}
+	return result;
+}
+
+int /*long*/ gtk_focus_out_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_focus_out_event (widget, event);
+	// widget could be disposed at this point
+	if (handle == 0) return 0;
+	if ((style & SWT.PUSH) != 0 && !OS.GTK_WIDGET_HAS_DEFAULT (handle)) {
+		Decorations menuShell = menuShell ();
+		if (menuShell.defaultButton == this) {
+			menuShell.defaultButton = null;
+		}
+	}
+	return result;
+}
+
+int /*long*/ gtk_key_press_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_key_press_event (widget, event);
+	if (result != 0) return result;
+	if ((style & SWT.RADIO) != 0) selected  = getSelection ();
+	return result;
+}
+
+void hookEvents () {
+	super.hookEvents();
+	OS.g_signal_connect_closure (handle, OS.clicked, display.closures [CLICKED], false);
+	if (labelHandle != 0) {
+		OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false);
+	}
+}
+
+boolean isDescribedByLabel () {
+	return false;
+}
+
+boolean mnemonicHit (char key) {
+	if (labelHandle == 0) return false;
+	boolean result = super.mnemonicHit (labelHandle, key);
+	if (result) setFocus ();
+	return result;
+}
+
+boolean mnemonicMatch (char key) {
+	if (labelHandle == 0) return false;
+	return mnemonicMatch (labelHandle, key);
+}
+
+void register () {
+	super.register ();
+	if (boxHandle != 0) display.addWidget (boxHandle, this);
+	if (labelHandle != 0) display.addWidget (labelHandle, this);
+	if (imageHandle != 0) display.addWidget (imageHandle, this);
+	if (arrowHandle != 0) display.addWidget (arrowHandle, this);
+}
+
+void releaseHandle () {
+	super.releaseHandle ();
+	boxHandle = imageHandle = labelHandle = arrowHandle = 0;
+}
+
+void releaseWidget () {
+	super.releaseWidget ();
+	if (groupHandle != 0) OS.g_object_unref (groupHandle);
+	groupHandle = 0;
+	if (imageList != null) imageList.dispose ();
+	imageList = null;
+	image = null;
+	text = null;
+}
+
+/**
+ * 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 resizeHandle (int width, int height) {
+	super.resizeHandle (width, height);
+	/*
+	* Feature in GTK, GtkCheckButton and GtkRadioButton allocate
+	* only the minimum size necessary for its child. This causes the child
+	* alignment to fail. The fix is to set the child size to the size
+	* of the button.
+	*/
+	if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
+		OS.gtk_widget_set_size_request (boxHandle, width, -1);
+	}
+}
+
+void selectRadio () {
+	/*
+	* This code is intentionally commented.  When two groups
+	* of radio buttons with the same parent are separated by
+	* another control, the correct behavior should be that
+	* the two groups act independently.  This is consistent
+	* with radio tool and menu items.  The commented code
+	* implements this behavior.
+	*/
+//	int index = 0;
+//	Control [] children = parent._getChildren ();
+//	while (index < children.length && children [index] != this) index++;
+//	int i = index - 1;
+//	while (i >= 0 && children [i].setRadioSelection (false)) --i;
+//	int j = index + 1;
+//	while (j < children.length && children [j].setRadioSelection (false)) j++;
+//	setSelection (true);
+	Control [] children = parent._getChildren ();
+	for (int i=0; i<children.length; i++) {
+		Control child = children [i];
+		if (this != child) child.setRadioSelection (false);
+	}
+	setSelection (true);
+}
+
+/**
+ * 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 ();
+	_setAlignment (alignment);
+}
+
+void _setAlignment (int alignment) {
+	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;
+		boolean isRTL = (style & SWT.RIGHT_TO_LEFT) != 0;
+		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 = isRTL ? OS.GTK_ARROW_RIGHT : OS.GTK_ARROW_LEFT; break;
+			case SWT.RIGHT: arrow_type = isRTL ? OS.GTK_ARROW_LEFT : OS.GTK_ARROW_RIGHT; break;
+		}
+		OS.gtk_arrow_set (arrowHandle, 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);
+	/* Alignment not honoured when image and text are visible */
+	boolean bothVisible = OS.GTK_WIDGET_VISIBLE (labelHandle) && OS.GTK_WIDGET_VISIBLE (imageHandle);
+	if (bothVisible) {
+		if ((style & (SWT.RADIO | SWT.CHECK)) != 0) alignment = SWT.LEFT;
+		if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) alignment = SWT.CENTER;
+	}
+	if ((alignment & SWT.LEFT) != 0) {
+		if (bothVisible) {
+			OS.gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_START);
+			OS.gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_START);
+		}
+		OS.gtk_misc_set_alignment (labelHandle, 0.0f, 0.5f);
+		OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_LEFT);
+		OS.gtk_misc_set_alignment (imageHandle, 0.0f, 0.5f);
+		return;
+	}
+	if ((alignment & SWT.CENTER) != 0) {
+		if (bothVisible) {
+			OS.gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, OS.GTK_PACK_END);
+			OS.gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, OS.GTK_PACK_START);
+			OS.gtk_misc_set_alignment (labelHandle, 0f, 0.5f);
+			OS.gtk_misc_set_alignment (imageHandle, 1f, 0.5f);
+		} else {
+			OS.gtk_misc_set_alignment (labelHandle, 0.5f, 0.5f);
+			OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_CENTER);
+			OS.gtk_misc_set_alignment (imageHandle, 0.5f, 0.5f);
+		}
+		return;
+	}
+	if ((alignment & SWT.RIGHT) != 0) {
+		if (bothVisible) {
+			OS.gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_END);
+			OS.gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_END);
+		}
+		OS.gtk_misc_set_alignment (labelHandle, 1.0f, 0.5f);
+		OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_RIGHT);
+		OS.gtk_misc_set_alignment (imageHandle, 1.0f, 0.5f);
+		return;
+	}
+}
+
+void setBackgroundColor (GdkColor color) {
+	super.setBackgroundColor (color);
+	setBackgroundColor(fixedHandle, color);
+	if (labelHandle != 0) setBackgroundColor(labelHandle, color);
+	if (imageHandle != 0) setBackgroundColor(imageHandle, color);
+}
+
+void setFontDescription (int /*long*/ font) {
+	super.setFontDescription (font);
+	if (labelHandle != 0) OS.gtk_widget_modify_font (labelHandle, font);
+	if (imageHandle != 0) OS.gtk_widget_modify_font (imageHandle, font);
+}
+
+boolean setRadioSelection (boolean value) {
+	if ((style & SWT.RADIO) == 0) return false;
+	if (getSelection () != value) {
+		setSelection (value);
+		postEvent (SWT.Selection);
+	}
+	return true;
+}
+
+void setForegroundColor (GdkColor color) {
+	super.setForegroundColor (color);
+	setForegroundColor (fixedHandle, color);
+	if (labelHandle != 0) setForegroundColor (labelHandle, color);
+	if (imageHandle != 0) setForegroundColor (imageHandle, color);
+}
+
+/**
+ * Sets the receiver's image to the argument, which may be
+ * <code>null</code> indicating that no image should be displayed.
+ * <p>
+ * Note that a Button can display an image and text simultaneously
+ * on Windows (starting with XP), GTK+ and OSX.  On other platforms,
+ * a Button that has an image and text set into it will display the
+ * image or text that was set most recently.
+ * </p>
+ * @param image the image to display on the receiver (may be <code>null</code>)
+ *
+ * @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 ();
+	if ((style & SWT.ARROW) != 0) return;
+	if (imageList != null) imageList.dispose ();
+	imageList = null;
+	if (image != null) {
+		if (image.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+		imageList = new ImageList ();
+		int imageIndex = imageList.add (image);
+		int /*long*/ pixbuf = imageList.getPixbuf (imageIndex);
+		OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf);
+		if (text.length () == 0) OS.gtk_widget_hide (labelHandle);
+		OS.gtk_widget_show (imageHandle);
+	} else {
+		OS.gtk_image_set_from_pixbuf (imageHandle, 0);
+		OS.gtk_widget_show (labelHandle);
+		OS.gtk_widget_hide (imageHandle);
+	}
+	this.image = image;
+	_setAlignment (style);
+}
+
+void setOrientation () {
+	super.setOrientation ();
+	if ((style & SWT.RIGHT_TO_LEFT) != 0) {
+		if (labelHandle != 0) OS.gtk_widget_set_direction (labelHandle, OS.GTK_TEXT_DIR_RTL);
+		if (imageHandle != 0) OS.gtk_widget_set_direction (imageHandle, OS.GTK_TEXT_DIR_RTL);
+		if (arrowHandle != 0) {
+			switch (style & (SWT.LEFT | SWT.RIGHT)) {
+				case SWT.LEFT: OS.gtk_arrow_set (arrowHandle, OS.GTK_ARROW_RIGHT, OS.GTK_SHADOW_OUT); break;
+				case SWT.RIGHT: OS.gtk_arrow_set (arrowHandle, OS.GTK_ARROW_LEFT, OS.GTK_SHADOW_OUT); break;
+			}
+		}
+	}
+}
+
+/**
+ * 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 in.
+ *
+ * @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.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CLICKED);
+	OS.gtk_toggle_button_set_active (handle, selected);
+	if ((style & SWT.RADIO) != 0) OS.gtk_toggle_button_set_active (groupHandle, !selected);
+	OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CLICKED);
+}
+
+/**
+ * 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>
+ * <p>
+ * Mnemonics are indicated by an '&amp;' that causes the next
+ * character to be the mnemonic.  When the user presses a
+ * key sequence that matches the mnemonic, a selection
+ * event occurs. On most platforms, the mnemonic appears
+ * underlined but may be emphasized in a platform specific
+ * manner.  The mnemonic indicator character '&amp;' can be
+ * escaped by doubling it in the string, causing a single
+ * '&amp;' to be displayed.
+ * </p><p>
+ * Note that a Button can display an image and text simultaneously
+ * on Windows (starting with XP), GTK+ and OSX.  On other platforms,
+ * a Button that has an image and text set into it will display the
+ * image or text that was set most recently.
+ * </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 ((style & SWT.ARROW) != 0) return;
+	text = string;
+	char [] chars = fixMnemonic (string);
+	byte [] buffer = Converter.wcsToMbcs (null, chars, true);
+	OS.gtk_label_set_text_with_mnemonic (labelHandle, buffer);
+	if (image == null) OS.gtk_widget_hide (imageHandle);
+	OS.gtk_widget_show (labelHandle);
+	_setAlignment (style);
+}
+
+void showWidget () {
+	super.showWidget ();
+	if (boxHandle != 0) OS.gtk_widget_show (boxHandle);
+	if (labelHandle != 0) OS.gtk_widget_show (labelHandle);
+	if (arrowHandle != 0) OS.gtk_widget_show (arrowHandle);
+}
+
+int traversalCode (int key, GdkEventKey event) {
+	int code = super.traversalCode (key, event);
+	if ((style & SWT.RADIO) != 0) code |= SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS;
+	return code;
+}
+
+}
++/
\ No newline at end of file