--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Composite.d	Wed Jan 09 06:17:26 2008 +0100
@@ -0,0 +1,1361 @@
+/*******************************************************************************
+ * 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.Composite;
+import dwt.widgets.Control;
+import dwt.internal.gtk.c.gtktypes;
+
+class Composite : Control {
+    Control [] _getTabList ();
+    int backgroundMode;
+    GtkWidget* parentingHandle ();
+    Control [] _getChildren () ;
+    void removeControl (Control control);
+    void moveAbove (GtkWidget* child, GtkWidget* sibling);
+    void moveBelow (GtkWidget* child, GtkWidget* sibling);
+    void fixZOrder () ;
+}
+
+/+
+import dwt.*;
+import dwt.internal.cairo.*;
+import dwt.internal.gtk.*;
+import dwt.graphics.*;
+
+/**
+ * Instances of this class are controls which are capable
+ * of containing other controls.
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP, EMBEDDED, DOUBLE_BUFFERED</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>(none)</dd>
+ * </dl>
+ * <p>
+ * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>,
+ * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>.
+ * They can be used with <code>Composite</code> if you are drawing your own, but their
+ * behavior is undefined if they are used with subclasses of <code>Composite</code> other
+ * than <code>Canvas</code>.
+ * </p><p>
+ * Note: The <code>CENTER</code> style, although undefined for composites, has the
+ * same value as <code>EMBEDDED</code> (which is used to embed widgets from other
+ * widget toolkits into SWT).  On some operating systems (GTK, Motif), this may cause
+ * the children of this composite to be obscured.  The <code>EMBEDDED</code> style
+ * is for use by other widget toolkits and should normally never be used.
+ * </p><p>
+ * This class may be subclassed by custom control implementors
+ * who are building controls that are constructed from aggregates
+ * of other controls.
+ * </p>
+ *
+ * @see Canvas
+ */
+public class Composite extends Scrollable {
+	public int /*long*/  embeddedHandle;
+	int /*long*/ imHandle, socketHandle;
+	Layout layout;
+	Control[] tabList;
+	int layoutCount, backgroundMode;
+
+	static final String NO_INPUT_METHOD = "dwt.internal.gtk.noInputMethod"; //$NON-NLS-1$
+
+Composite () {
+	/* Do nothing */
+}
+
+/**
+ * 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 widget which will be the parent of the new instance (cannot be null)
+ * @param style the style of widget 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>
+ * </ul>
+ *
+ * @see SWT#NO_BACKGROUND
+ * @see SWT#NO_FOCUS
+ * @see SWT#NO_MERGE_PAINTS
+ * @see SWT#NO_REDRAW_RESIZE
+ * @see SWT#NO_RADIO_GROUP
+ * @see Widget#getStyle
+ */
+public Composite (Composite parent, int style) {
+	super (parent, style);
+}
+
+Control [] _getChildren () {
+	int /*long*/ parentHandle = parentingHandle ();
+	int /*long*/ list = OS.gtk_container_get_children (parentHandle);
+	if (list == 0) return new Control [0];
+	int count = OS.g_list_length (list);
+	Control [] children = new Control [count];
+	int i = 0;
+	int /*long*/ temp = list;
+	while (temp != 0) {
+		int /*long*/ handle = OS.g_list_data (temp);
+		if (handle != 0) {
+			Widget widget = display.getWidget (handle);
+			if (widget != null && widget != this) {
+				if (widget instanceof Control) {
+					children [i++] = (Control) widget;
+				}
+			}
+		}
+		temp = OS.g_list_next (temp);
+	}
+	OS.g_list_free (list);
+	if (i == count) return children;
+	Control [] newChildren = new Control [i];
+	System.arraycopy (children, 0, newChildren, 0, i);
+	return newChildren;
+}
+
+Control [] _getTabList () {
+	if (tabList == null) return tabList;
+	int count = 0;
+	for (int i=0; i<tabList.length; i++) {
+		if (!tabList [i].isDisposed ()) count++;
+	}
+	if (count == tabList.length) return tabList;
+	Control [] newList = new Control [count];
+	int index = 0;
+	for (int i=0; i<tabList.length; i++) {
+		if (!tabList [i].isDisposed ()) {
+			newList [index++] = tabList [i];
+		}
+	}
+	tabList = newList;
+	return tabList;
+}
+
+/**
+ * Clears any data that has been cached by a Layout for all widgets that
+ * are in the parent hierarchy of the changed control up to and including the
+ * receiver.  If an ancestor does not have a layout, it is skipped.
+ *
+ * @param changed an array of controls that changed state and require a recalculation of size
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li>
+ *    <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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>
+ *
+ * @since 3.1
+ */
+public void changed (Control[] changed) {
+	checkWidget ();
+	if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT);
+	for (int i=0; i<changed.length; i++) {
+		Control control = changed [i];
+		if (control == null) error (SWT.ERROR_INVALID_ARGUMENT);
+		if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+		boolean ancestor = false;
+		Composite composite = control.parent;
+		while (composite != null) {
+			ancestor = composite == this;
+			if (ancestor) break;
+			composite = composite.parent;
+		}
+		if (!ancestor) error (SWT.ERROR_INVALID_PARENT);
+	}
+	for (int i=0; i<changed.length; i++) {
+		Control child = changed [i];
+		Composite composite = child.parent;
+		while (child != this) {
+			if (composite.layout == null || !composite.layout.flushCache (child)) {
+				composite.state |= LAYOUT_CHANGED;
+			}
+			child = composite;
+			composite = child.parent;
+		}
+	}
+}
+
+void checkBuffered () {
+	if ((style & SWT.DOUBLE_BUFFERED) == 0 && (style & SWT.NO_BACKGROUND) != 0) {
+		return;
+	}
+	super.checkBuffered();
+}
+
+protected void checkSubclass () {
+	/* Do nothing - Subclassing is allowed */
+}
+
+int /*long*/ childStyle () {
+	if (scrolledHandle != 0) return 0;
+	return super.childStyle ();
+}
+
+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;
+	Point size;
+	if (layout != null) {
+		if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
+			changed |= (state & LAYOUT_CHANGED) != 0;
+			size = layout.computeSize (this, wHint, hHint, changed);
+			state &= ~LAYOUT_CHANGED;
+		} else {
+			size = new Point (wHint, hHint);
+		}
+	} else {
+		size = minimumSize (wHint, hHint, changed);
+	}
+	if (size.x == 0) size.x = DEFAULT_WIDTH;
+	if (size.y == 0) size.y = DEFAULT_HEIGHT;
+	if (wHint != SWT.DEFAULT) size.x = wHint;
+	if (hHint != SWT.DEFAULT) size.y = hHint;
+	Rectangle trim = computeTrim (0, 0, size.x, size.y);
+	return new Point (trim.width, trim.height);
+}
+
+Control [] computeTabList () {
+	Control result [] = super.computeTabList ();
+	if (result.length == 0) return result;
+	Control [] list = tabList != null ? _getTabList () : _getChildren ();
+	for (int i=0; i<list.length; i++) {
+		Control child = list [i];
+		Control [] childList = child.computeTabList ();
+		if (childList.length != 0) {
+			Control [] newResult = new Control [result.length + childList.length];
+			System.arraycopy (result, 0, newResult, 0, result.length);
+			System.arraycopy (childList, 0, newResult, result.length, childList.length);
+			result = newResult;
+		}
+	}
+	return result;
+}
+
+void createHandle (int index) {
+	state |= HANDLE | CANVAS;
+	boolean scrolled = (style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0;
+	if (!scrolled) state |= THEME_BACKGROUND;
+	createHandle (index, true, scrolled || (style & SWT.BORDER) != 0);
+}
+
+void createHandle (int index, boolean fixed, boolean scrolled) {
+	if (scrolled) {
+		if (fixed) {
+			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);
+		}
+		int /*long*/ vadj = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 10);
+		if (vadj == 0) error (SWT.ERROR_NO_HANDLES);
+		int /*long*/ hadj = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 10);
+		if (hadj == 0) error (SWT.ERROR_NO_HANDLES);
+		scrolledHandle = OS.gtk_scrolled_window_new (hadj, vadj);
+		if (scrolledHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES);
+	}
+	handle = OS.g_object_new (display.gtk_fixed_get_type (), 0);
+	if (handle == 0) SWT.error (SWT.ERROR_NO_HANDLES);
+	OS.gtk_fixed_set_has_window (handle, true);
+	OS.GTK_WIDGET_SET_FLAGS(handle, OS.GTK_CAN_FOCUS);
+	if ((style & SWT.EMBEDDED) == 0) {
+		if ((state & CANVAS) != 0 && (style & SWT.NO_FOCUS) == 0) {
+			/* Prevent an input method context from being created for the Browser widget */
+			if (display.getData (NO_INPUT_METHOD) == null) {
+				imHandle = OS.gtk_im_multicontext_new ();
+				if (imHandle == 0) error (SWT.ERROR_NO_HANDLES);
+			}
+		}
+	}
+	if (scrolled) {
+		if (fixed) OS.gtk_container_add (fixedHandle, scrolledHandle);
+		/*
+		* Force the scrolledWindow to have a single child that is
+		* not scrolled automatically.  Calling gtk_container_add()
+		* seems to add the child correctly but cause a warning.
+		*/
+		boolean warnings = display.getWarnings ();
+		display.setWarnings (false);
+		OS.gtk_container_add (scrolledHandle, handle);
+		display.setWarnings (warnings);
+
+		int hsp = (style & SWT.H_SCROLL) != 0 ? OS.GTK_POLICY_ALWAYS : OS.GTK_POLICY_NEVER;
+		int vsp = (style & SWT.V_SCROLL) != 0 ? OS.GTK_POLICY_ALWAYS : OS.GTK_POLICY_NEVER;
+		OS.gtk_scrolled_window_set_policy (scrolledHandle, hsp, vsp);
+		if (hasBorder ()) {
+			OS.gtk_scrolled_window_set_shadow_type (scrolledHandle, OS.GTK_SHADOW_ETCHED_IN);
+		}
+	}
+	if ((style & SWT.EMBEDDED) != 0) {
+		socketHandle = OS.gtk_socket_new ();
+		if (socketHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES);
+		OS.gtk_container_add (handle, socketHandle);
+	}
+	if ((style & SWT.NO_REDRAW_RESIZE) != 0) {
+		OS.gtk_widget_set_redraw_on_allocate (handle, false);
+	}
+	/*
+	* Bug in GTK.  When a widget is double buffered and the back
+	* pixmap is null, the double buffer pixmap is filled with the
+	* background of the widget rather than the current contents of
+	* the screen.  If nothing is drawn during an expose event,
+	* the pixels are altered.  The fix is to clear double buffering
+	* when NO_BACKGROUND is set and DOUBLE_BUFFERED
+	* is not explicitly set.
+	*/
+	if ((style & SWT.DOUBLE_BUFFERED) == 0 && (style & SWT.NO_BACKGROUND) != 0) {
+		OS.gtk_widget_set_double_buffered (handle, false);
+	}
+}
+
+void deregister () {
+	super.deregister ();
+	if (socketHandle != 0) display.removeWidget (socketHandle);
+}
+
+void drawBackground (GC gc, int x, int y, int width, int height) {
+	Control control = findBackgroundControl ();
+	if (control != null) {
+		GCData data = gc.getGCData ();
+		int /*long*/ cairo = data.cairo;
+		if (cairo != 0) {
+			Cairo.cairo_save (cairo);
+			if (control.backgroundImage != null) {
+				Point pt = display.map (this, control, 0, 0);
+				Cairo.cairo_translate (cairo, -pt.x, -pt.y);
+				x += pt.x;
+				y += pt.y;
+				int /*long*/ xDisplay = OS.GDK_DISPLAY ();
+				int /*long*/ xVisual = OS.gdk_x11_visual_get_xvisual (OS.gdk_visual_get_system());
+				int /*long*/ drawable = control.backgroundImage.pixmap;
+				int /*long*/ xDrawable = OS.GDK_PIXMAP_XID (drawable);
+				int [] w = new int [1], h = new int [1];
+				OS.gdk_drawable_get_size (drawable, w, h);
+				int /*long*/ surface = Cairo.cairo_xlib_surface_create (xDisplay, xDrawable, xVisual, w [0], h [0]);
+				if (surface == 0) error (SWT.ERROR_NO_HANDLES);
+				int /*long*/ pattern = Cairo.cairo_pattern_create_for_surface (surface);
+				if (pattern == 0) error (SWT.ERROR_NO_HANDLES);
+				Cairo.cairo_pattern_set_extend (pattern, Cairo.CAIRO_EXTEND_REPEAT);
+				Cairo.cairo_set_source (cairo, pattern);
+				Cairo.cairo_surface_destroy (surface);
+				Cairo.cairo_pattern_destroy (pattern);
+			} else {
+				GdkColor color = control.getBackgroundColor ();
+				Cairo.cairo_set_source_rgba (cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF);
+			}
+			Cairo.cairo_rectangle (cairo, x, y, width, height);
+			Cairo.cairo_fill (cairo);
+			Cairo.cairo_restore (cairo);
+		} else {
+			int /*long*/ gdkGC = gc.handle;
+			GdkGCValues values = new GdkGCValues ();
+			OS.gdk_gc_get_values (gdkGC, values);
+			if (control.backgroundImage != null) {
+				Point pt = display.map (this, control, 0, 0);
+				OS.gdk_gc_set_fill (gdkGC, OS.GDK_TILED);
+				OS.gdk_gc_set_ts_origin (gdkGC, -pt.x, -pt.y);
+				OS.gdk_gc_set_tile (gdkGC, control.backgroundImage.pixmap);
+				OS.gdk_draw_rectangle (data.drawable, gdkGC, 1, x, y, width, height);
+				OS.gdk_gc_set_fill (gdkGC, values.fill);
+				OS.gdk_gc_set_ts_origin (gdkGC, values.ts_x_origin, values.ts_y_origin);
+			} else {
+				GdkColor color = control.getBackgroundColor ();
+				OS.gdk_gc_set_foreground (gdkGC, color);
+				OS.gdk_draw_rectangle (data.drawable, gdkGC, 1, x, y, width, height);
+				color.pixel = values.foreground_pixel;
+				OS.gdk_gc_set_foreground (gdkGC, color);
+			}
+		}
+	} else {
+		gc.fillRectangle (x, y, width, height);
+	}
+}
+
+void enableWidget (boolean enabled) {
+	if ((state & CANVAS) != 0) return;
+	super.enableWidget (enabled);
+}
+
+Composite findDeferredControl () {
+	return layoutCount > 0 ? this : parent.findDeferredControl ();
+}
+
+Menu [] findMenus (Control control) {
+	if (control == this) return new Menu [0];
+	Menu result [] = super.findMenus (control);
+	Control [] children = _getChildren ();
+	for (int i=0; i<children.length; i++) {
+		Control child = children [i];
+		Menu [] menuList = child.findMenus (control);
+		if (menuList.length != 0) {
+			Menu [] newResult = new Menu [result.length + menuList.length];
+			System.arraycopy (result, 0, newResult, 0, result.length);
+			System.arraycopy (menuList, 0, newResult, result.length, menuList.length);
+			result = newResult;
+		}
+	}
+	return result;
+}
+
+void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) {
+	super.fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
+	Control [] children = _getChildren ();
+	for (int i=0; i<children.length; i++) {
+		children [i].fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
+	}
+}
+
+void fixStyle () {
+	super.fixStyle ();
+	if (scrolledHandle == 0) fixStyle (handle);
+	Control[] children = _getChildren ();
+	for (int i = 0; i < children.length; i++) {
+		children [i].fixStyle ();
+	}
+}
+
+void fixTabList (Control control) {
+	if (tabList == null) return;
+	int count = 0;
+	for (int i=0; i<tabList.length; i++) {
+		if (tabList [i] == control) count++;
+	}
+	if (count == 0) return;
+	Control [] newList = null;
+	int length = tabList.length - count;
+	if (length != 0) {
+		newList = new Control [length];
+		int index = 0;
+		for (int i=0; i<tabList.length; i++) {
+			if (tabList [i] != control) {
+				newList [index++] = tabList [i];
+			}
+		}
+	}
+	tabList = newList;
+}
+
+void fixZOrder () {
+	if ((state & CANVAS) != 0) return;
+	int /*long*/ parentHandle = parentingHandle ();
+	int /*long*/ parentWindow = OS.GTK_WIDGET_WINDOW (parentHandle);
+	if (parentWindow == 0) return;
+	int /*long*/ [] userData = new int /*long*/ [1];
+	int /*long*/ windowList = OS.gdk_window_get_children (parentWindow);
+	if (windowList != 0) {
+		int /*long*/ windows = windowList;
+		while (windows != 0) {
+			int /*long*/ window = OS.g_list_data (windows);
+			if (window != redrawWindow) {
+				OS.gdk_window_get_user_data (window, userData);
+				if (userData [0] == 0 || OS.G_OBJECT_TYPE (userData [0]) != display.gtk_fixed_get_type ()) {
+					OS.gdk_window_lower (window);
+				}
+			}
+			windows = OS.g_list_next (windows);
+		}
+		OS.g_list_free (windowList);
+	}
+}
+
+int /*long*/ focusHandle () {
+	if (socketHandle != 0) return socketHandle;
+	return super.focusHandle ();
+}
+
+boolean forceFocus (int /*long*/ focusHandle) {
+	if (socketHandle != 0) OS.GTK_WIDGET_SET_FLAGS (focusHandle, OS.GTK_CAN_FOCUS);
+	boolean result = super.forceFocus (focusHandle);
+	if (socketHandle != 0) OS.GTK_WIDGET_UNSET_FLAGS (focusHandle, OS.GTK_CAN_FOCUS);
+	return result;
+}
+
+/**
+ * Returns the receiver's background drawing mode. This
+ * will be one of the following constants defined in class
+ * <code>SWT</code>:
+ * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>,
+ * <code>INHERTIT_FORCE</code>.
+ *
+ * @return the background mode
+ *
+ * @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 SWT
+ *
+ * @since 3.2
+ */
+public int getBackgroundMode () {
+	checkWidget ();
+	return backgroundMode;
+}
+
+/**
+ * Returns a (possibly empty) array containing the receiver's children.
+ * Children are returned in the order that they are drawn.  The topmost
+ * control appears at the beginning of the array.  Subsequent controls
+ * draw beneath this control and appear later in the array.
+ * <p>
+ * Note: This is not the actual structure used by the receiver
+ * to maintain its list of children, so modifying the array will
+ * not affect the receiver.
+ * </p>
+ *
+ * @return an array of children
+ *
+ * @see Control#moveAbove
+ * @see Control#moveBelow
+ *
+ * @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 Control [] getChildren () {
+	checkWidget();
+	return _getChildren ();
+}
+
+int getChildrenCount () {
+	/*
+	* NOTE: The current implementation will count
+	* non-registered children.
+	*/
+	int /*long*/ list = OS.gtk_container_get_children (handle);
+	if (list == 0) return 0;
+	int count = OS.g_list_length (list);
+	OS.g_list_free (list);
+	return count;
+}
+
+public Rectangle getClientArea () {
+	checkWidget();
+	if ((state & CANVAS) != 0) {
+		if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
+			return new Rectangle (0, 0, 0, 0);
+		}
+		forceResize ();
+		int /*long*/ clientHandle = clientHandle ();
+		int width = (state & ZERO_WIDTH) != 0 ? 0 : OS.GTK_WIDGET_WIDTH (clientHandle);
+		int height = (state & ZERO_HEIGHT) != 0 ? 0 : OS.GTK_WIDGET_HEIGHT (clientHandle);
+		return new Rectangle (0, 0, width, height);
+	}
+	return super.getClientArea();
+}
+
+/**
+ * Returns layout which is associated with the receiver, or
+ * null if one has not been set.
+ *
+ * @return the receiver's layout or null
+ *
+ * @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 Layout getLayout () {
+	checkWidget();
+	return layout;
+}
+
+/**
+ * Returns <code>true</code> if the receiver has deferred
+ * the performing of layout, and <code>false</code> otherwise.
+ *
+ * @return the receiver's deferred layout 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>
+ *
+ * @see #setLayoutDeferred(boolean)
+ * @see #isLayoutDeferred()
+ *
+ * @since 3.1
+ */
+public boolean getLayoutDeferred () {
+	checkWidget ();
+	return layoutCount > 0 ;
+}
+
+/**
+ * Gets the (possibly empty) tabbing order for the control.
+ *
+ * @return tabList the ordered list of controls representing the tab order
+ *
+ * @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 #setTabList
+ */
+public Control [] getTabList () {
+	checkWidget ();
+	Control [] tabList = _getTabList ();
+	if (tabList == null) {
+		int count = 0;
+		Control [] list =_getChildren ();
+		for (int i=0; i<list.length; i++) {
+			if (list [i].isTabGroup ()) count++;
+		}
+		tabList = new Control [count];
+		int index = 0;
+		for (int i=0; i<list.length; i++) {
+			if (list [i].isTabGroup ()) {
+				tabList [index++] = list [i];
+			}
+		}
+	}
+	return tabList;
+}
+
+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 ((state & CANVAS) != 0) {
+		if ((style & SWT.NO_FOCUS) == 0 && hooksKeys ()) {
+			GdkEventButton gdkEvent = new GdkEventButton ();
+			OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
+			if (gdkEvent.button == 1) {
+				if (getChildrenCount () == 0) setFocus ();
+			}
+		}
+	}
+	return result;
+}
+
+int /*long*/ gtk_expose_event (int /*long*/ widget, int /*long*/ eventPtr) {
+	if ((state & OBSCURED) != 0) return 0;
+	if ((state & CANVAS) == 0) {
+		return super.gtk_expose_event (widget, eventPtr);
+	}
+	if ((style & SWT.NO_MERGE_PAINTS) == 0) {
+		return super.gtk_expose_event (widget, eventPtr);
+	}
+	if (!hooks (SWT.Paint) && !filters (SWT.Paint)) return 0;
+	GdkEventExpose gdkEvent = new GdkEventExpose ();
+	OS.memmove(gdkEvent, eventPtr, GdkEventExpose.sizeof);
+	int /*long*/ [] rectangles = new int /*long*/ [1];
+	int [] n_rectangles = new int [1];
+	OS.gdk_region_get_rectangles (gdkEvent.region, rectangles, n_rectangles);
+	GdkRectangle rect = new GdkRectangle ();
+	for (int i=0; i<n_rectangles[0]; i++) {
+		Event event = new Event ();
+		OS.memmove (rect, rectangles [0] + i * GdkRectangle.sizeof, GdkRectangle.sizeof);
+		event.x = rect.x;
+		event.y = rect.y;
+		event.width = rect.width;
+		event.height = rect.height;
+		int /*long*/ damageRgn = OS.gdk_region_new ();
+		OS.gdk_region_union_with_rect (damageRgn, rect);
+		GCData data = new GCData ();
+		data.damageRgn = damageRgn;
+		GC gc = event.gc = GC.gtk_new (this, data);
+		OS.gdk_gc_set_clip_region (gc.handle, damageRgn);
+		sendEvent (SWT.Paint, event);
+		gc.dispose ();
+		OS.gdk_region_destroy (damageRgn);
+		event.gc = null;
+	}
+	OS.g_free (rectangles [0]);
+	return 0;
+}
+
+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;
+	/*
+	* Feature in GTK.  The default behavior when the return key
+	* is pressed is to select the default button.  This is not the
+	* expected behavior for Composite and its subclasses.  The
+	* fix is to avoid calling the default handler.
+	*/
+	if ((state & CANVAS) != 0 && socketHandle == 0) {
+		GdkEventKey keyEvent = new GdkEventKey ();
+		OS.memmove (keyEvent, event, GdkEventKey.sizeof);
+		int key = keyEvent.keyval;
+		switch (key) {
+			case OS.GDK_Return:
+			case OS.GDK_KP_Enter: return 1;
+		}
+	}
+	return result;
+}
+
+int /*long*/ gtk_focus (int /*long*/ widget, int /*long*/ directionType) {
+	if (widget == socketHandle) return 0;
+	return super.gtk_focus (widget, directionType);
+}
+
+int /*long*/ gtk_focus_in_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_focus_in_event (widget, event);
+	return (state & CANVAS) != 0 ? 1 : result;
+}
+
+int /*long*/ gtk_focus_out_event (int /*long*/ widget, int /*long*/ event) {
+	int /*long*/ result = super.gtk_focus_out_event (widget, event);
+	return (state & CANVAS) != 0 ? 1 : result;
+}
+
+int /*long*/ gtk_map (int /*long*/ widget) {
+	fixZOrder ();
+	return 0;
+}
+
+int /*long*/ gtk_realize (int /*long*/ widget) {
+	int /*long*/ result = super.gtk_realize (widget);
+	if ((style & SWT.NO_BACKGROUND) != 0) {
+		int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle ());
+		if (window != 0) OS.gdk_window_set_back_pixmap (window, 0, false);
+	}
+	if (socketHandle != 0) {
+		embeddedHandle = OS.gtk_socket_get_id (socketHandle);
+	}
+	return result;
+}
+
+int /*long*/ gtk_scroll_child (int /*long*/ widget, int /*long*/ scrollType, int /*long*/ horizontal) {
+	/* Stop GTK scroll child signal for canvas */
+	OS.g_signal_stop_emission_by_name (widget, OS.scroll_child);
+	return 1;
+}
+
+int /*long*/ gtk_style_set (int /*long*/ widget, int /*long*/ previousStyle) {
+	int /*long*/ result = super.gtk_style_set (widget, previousStyle);
+	if ((style & SWT.NO_BACKGROUND) != 0) {
+		int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle ());
+		if (window != 0) OS.gdk_window_set_back_pixmap (window, 0, false);
+	}
+	return result;
+}
+
+boolean hasBorder () {
+	return (style & SWT.BORDER) != 0;
+}
+
+void hookEvents () {
+	super.hookEvents ();
+	if ((state & CANVAS) != 0) {
+		OS.gtk_widget_add_events (handle, OS.GDK_POINTER_MOTION_HINT_MASK);
+		if (scrolledHandle != 0) {
+			OS.g_signal_connect_closure (scrolledHandle, OS.scroll_child, display.closures [SCROLL_CHILD], false);
+		}
+	}
+}
+
+boolean hooksKeys () {
+	return hooks (SWT.KeyDown) || hooks (SWT.KeyUp);
+}
+
+int /*long*/ imHandle () {
+	return imHandle;
+}
+
+/**
+ * Returns <code>true</code> if the receiver or any ancestor
+ * up to and including the receiver's nearest ancestor shell
+ * has deferred the performing of layouts.  Otherwise, <code>false</code>
+ * is returned.
+ *
+ * @return the receiver's deferred layout 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>
+ *
+ * @see #setLayoutDeferred(boolean)
+ * @see #getLayoutDeferred()
+ *
+ * @since 3.1
+ */
+public boolean isLayoutDeferred () {
+	checkWidget ();
+	return findDeferredControl () != null;
+}
+
+boolean isTabGroup() {
+	if ((state & CANVAS) != 0) return true;
+	return super.isTabGroup();
+}
+
+/**
+ * If the receiver has a layout, asks the layout to <em>lay out</em>
+ * (that is, set the size and location of) the receiver's children.
+ * If the receiver does not have a layout, do nothing.
+ * <p>
+ * This is equivalent to calling <code>layout(true)</code>.
+ * </p>
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </p>
+ *
+ * @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 layout () {
+	checkWidget ();
+	layout (true);
+}
+
+/**
+ * If the receiver has a layout, asks the layout to <em>lay out</em>
+ * (that is, set the size and location of) the receiver's children.
+ * If the argument is <code>true</code> the layout must not rely
+ * on any information it has cached about the immediate children. If it
+ * is <code>false</code> the layout may (potentially) optimize the
+ * work it is doing by assuming that none of the receiver's
+ * children has changed state since the last layout.
+ * If the receiver does not have a layout, do nothing.
+ * <p>
+ * If a child is resized as a result of a call to layout, the
+ * resize event will invoke the layout of the child.  The layout
+ * will cascade down through all child widgets in the receiver's widget
+ * tree until a child is encountered that does not resize.  Note that
+ * a layout due to a resize will not flush any cached information
+ * (same as <code>layout(false)</code>).
+ * </p>
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </p>
+ *
+ * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise
+ *
+ * @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 layout (boolean changed) {
+	checkWidget ();
+	if (layout == null) return;
+	layout (changed, false);
+}
+
+/**
+ * If the receiver has a layout, asks the layout to <em>lay out</em>
+ * (that is, set the size and location of) the receiver's children.
+ * If the changed argument is <code>true</code> the layout must not rely
+ * on any information it has cached about its children. If it
+ * is <code>false</code> the layout may (potentially) optimize the
+ * work it is doing by assuming that none of the receiver's
+ * children has changed state since the last layout.
+ * If the all argument is <code>true</code> the layout will cascade down
+ * through all child widgets in the receiver's widget tree, regardless of
+ * whether the child has changed size.  The changed argument is applied to
+ * all layouts.  If the all argument is <code>false</code>, the layout will
+ * <em>not</em> cascade down through all child widgets in the receiver's widget
+ * tree.  However, if a child is resized as a result of a call to layout, the
+ * resize event will invoke the layout of the child.  Note that
+ * a layout due to a resize will not flush any cached information
+ * (same as <code>layout(false)</code>).
+ * </p>
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </p>
+ *
+ * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise
+ * @param all <code>true</code> if all children in the receiver's widget tree should be laid out, and <code>false</code> otherwise
+ *
+ * @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>
+ *
+ * @since 3.1
+ */
+public void layout (boolean changed, boolean all) {
+	checkWidget ();
+	if (layout == null && !all) return;
+	markLayout (changed, all);
+	updateLayout (all);
+}
+
+/**
+ * Forces a lay out (that is, sets the size and location) of all widgets that
+ * are in the parent hierarchy of the changed control up to and including the
+ * receiver.  The layouts in the hierarchy must not rely on any information
+ * cached about the changed control or any of its ancestors.  The layout may
+ * (potentially) optimize the work it is doing by assuming that none of the
+ * peers of the changed control have changed state since the last layout.
+ * If an ancestor does not have a layout, skip it.
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </p>
+ *
+ * @param changed a control that has had a state change which requires a recalculation of its size
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li>
+ *    <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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>
+ *
+ * @since 3.1
+ */
+public void layout (Control [] changed) {
+	checkWidget ();
+	if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT);
+	for (int i=0; i<changed.length; i++) {
+		Control control = changed [i];
+		if (control == null) error (SWT.ERROR_INVALID_ARGUMENT);
+		if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+		boolean ancestor = false;
+		Composite composite = control.parent;
+		while (composite != null) {
+			ancestor = composite == this;
+			if (ancestor) break;
+			composite = composite.parent;
+		}
+		if (!ancestor) error (SWT.ERROR_INVALID_PARENT);
+	}
+	int updateCount = 0;
+	Composite [] update = new Composite [16];
+	for (int i=0; i<changed.length; i++) {
+		Control child = changed [i];
+		Composite composite = child.parent;
+		while (child != this) {
+			if (composite.layout != null) {
+				composite.state |= LAYOUT_NEEDED;
+				if (!composite.layout.flushCache (child)) {
+					composite.state |= LAYOUT_CHANGED;
+				}
+			}
+			if (updateCount == update.length) {
+				Composite [] newUpdate = new Composite [update.length + 16];
+				System.arraycopy (update, 0, newUpdate, 0, update.length);
+				update = newUpdate;
+			}
+			child = update [updateCount++] = composite;
+			composite = child.parent;
+		}
+	}
+	for (int i=updateCount-1; i>=0; i--) {
+		update [i].updateLayout (false);
+	}
+}
+
+void markLayout (boolean changed, boolean all) {
+	if (layout != null) {
+		state |= LAYOUT_NEEDED;
+		if (changed) state |= LAYOUT_CHANGED;
+	}
+	if (all) {
+		Control [] children = _getChildren ();
+		for (int i=0; i<children.length; i++) {
+			children [i].markLayout (changed, all);
+		}
+	}
+}
+
+void moveAbove (int /*long*/ child, int /*long*/ sibling) {
+	if (child == sibling) return;
+	int /*long*/ parentHandle = parentingHandle ();
+	GtkFixed fixed = new GtkFixed ();
+	OS.memmove (fixed, parentHandle);
+	int /*long*/ children = fixed.children;
+	if (children == 0) return;
+	int /*long*/ [] data = new int /*long*/ [1];
+	int /*long*/ [] widget = new int /*long*/ [1];
+	int /*long*/ childData = 0, childLink = 0, siblingLink = 0, temp = children;
+	while (temp != 0) {
+		OS.memmove (data, temp, OS.PTR_SIZEOF);
+		OS.memmove (widget, data [0], OS.PTR_SIZEOF);
+		if (child == widget [0]) {
+			childLink = temp;
+			childData = data [0];
+		} else if (sibling == widget [0]) {
+			siblingLink = temp;
+		}
+		if (childData != 0 && (sibling == 0 || siblingLink != 0)) break;
+		temp = OS.g_list_next (temp);
+	}
+	children = OS.g_list_remove_link (children, childLink);
+	if (siblingLink == 0 || OS.g_list_previous (siblingLink) == 0) {
+		OS.g_list_free_1 (childLink);
+		children = OS.g_list_prepend (children, childData);
+	} else {
+		temp = OS.g_list_previous (siblingLink);
+		OS.g_list_set_previous (childLink, temp);
+		OS.g_list_set_next (temp, childLink);
+		OS.g_list_set_next (childLink, siblingLink);
+		OS.g_list_set_previous (siblingLink, childLink);
+	}
+	fixed.children = children;
+	OS.memmove (parentHandle, fixed);
+}
+
+void moveBelow (int /*long*/ child, int /*long*/ sibling) {
+	if (child == sibling) return;
+	int /*long*/ parentHandle = parentingHandle ();
+	if (sibling == 0 && parentHandle == fixedHandle) {
+		moveAbove (child, scrolledHandle != 0  ? scrolledHandle : handle);
+		return;
+	}
+	GtkFixed fixed = new GtkFixed ();
+	OS.memmove (fixed, parentHandle);
+	int /*long*/ children = fixed.children;
+	if (children == 0) return;
+	int /*long*/ [] data = new int /*long*/ [1];
+	int /*long*/ [] widget = new int /*long*/ [1];
+	int /*long*/ childData = 0, childLink = 0, siblingLink = 0, temp = children;
+	while (temp != 0) {
+		OS.memmove (data, temp, OS.PTR_SIZEOF);
+		OS.memmove (widget, data [0], OS.PTR_SIZEOF);
+		if (child == widget [0]) {
+			childLink = temp;
+			childData = data [0];
+		} else if (sibling == widget [0]) {
+			siblingLink = temp;
+		}
+		if (childData != 0 && (sibling == 0 || siblingLink != 0)) break;
+		temp = OS.g_list_next (temp);
+	}
+	children = OS.g_list_remove_link (children, childLink);
+	if (siblingLink == 0 || OS.g_list_next (siblingLink) == 0) {
+		OS.g_list_free_1 (childLink);
+		children = OS.g_list_append (children, childData);
+	} else {
+		temp = OS.g_list_next (siblingLink);
+		OS.g_list_set_next (childLink, temp);
+		OS.g_list_set_previous (temp, childLink);
+		OS.g_list_set_previous (childLink, siblingLink);
+		OS.g_list_set_next (siblingLink, childLink);
+	}
+	fixed.children = children;
+	OS.memmove (parentHandle, fixed);
+}
+
+Point minimumSize (int wHint, int hHint, boolean changed) {
+	Control [] children = _getChildren ();
+	int width = 0, height = 0;
+	for (int i=0; i<children.length; i++) {
+		Rectangle rect = children [i].getBounds ();
+		width = Math.max (width, rect.x + rect.width);
+		height = Math.max (height, rect.y + rect.height);
+	}
+	return new Point (width, height);
+}
+
+int /*long*/ parentingHandle () {
+	if ((state & CANVAS) != 0) return handle;
+	return fixedHandle != 0 ? fixedHandle : handle;
+}
+
+void redrawChildren () {
+	super.redrawChildren ();
+	Control [] children = _getChildren ();
+	for (int i = 0; i < children.length; i++) {
+		Control child = children [i];
+		if ((child.state & PARENT_BACKGROUND) != 0) {
+			child.redrawWidget (0, 0, 0, 0, true, false, true);
+			child.redrawChildren ();
+		}
+	}
+}
+
+void register () {
+	super.register ();
+	if (socketHandle != 0) display.addWidget (socketHandle, this);
+}
+
+void releaseChildren (boolean destroy) {
+	Control [] children = _getChildren ();
+	for (int i=0; i<children.length; i++) {
+		Control child = children [i];
+		if (child != null && !child.isDisposed ()) {
+			child.release (false);
+		}
+	}
+	super.releaseChildren (destroy);
+}
+
+void releaseHandle () {
+	super.releaseHandle ();
+	socketHandle = embeddedHandle = 0;
+}
+
+void releaseWidget () {
+	super.releaseWidget ();
+	if (imHandle != 0) OS.g_object_unref (imHandle);
+	imHandle = 0;
+	layout = null;
+	tabList = null;
+}
+
+void removeControl (Control control) {
+	fixTabList (control);
+}
+
+void resizeHandle (int width, int height) {
+	super.resizeHandle (width, height);
+	if (socketHandle != 0) OS.gtk_widget_set_size_request (socketHandle, width, height);
+}
+
+/**
+ * Sets the background drawing mode to the argument which should
+ * be one of the following constants defined in class <code>SWT</code>:
+ * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>,
+ * <code>INHERIT_FORCE</code>.
+ *
+ * @param mode the new background mode
+ *
+ * @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 SWT
+ *
+ * @since 3.2
+ */
+public void setBackgroundMode (int mode) {
+	checkWidget ();
+	backgroundMode = mode;
+	Control[] children = _getChildren ();
+	for (int i = 0; i < children.length; i++) {
+		children [i].updateBackgroundMode ();
+	}
+}
+
+int setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
+	int result = super.setBounds (x, y, width, height, move, resize);
+	if ((result & RESIZED) != 0 && layout != null) {
+		markLayout (false, false);
+		updateLayout (false);
+	}
+	return result;
+}
+
+public boolean setFocus () {
+	checkWidget();
+	Control [] children = _getChildren ();
+	for (int i=0; i<children.length; i++) {
+		Control child = children [i];
+		if (child.getVisible () && child.setFocus ()) return true;
+	}
+	return super.setFocus ();
+}
+
+/**
+ * Sets the layout which is associated with the receiver to be
+ * the argument which may be null.
+ *
+ * @param layout the receiver's new layout or null
+ *
+ * @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 setLayout (Layout layout) {
+	checkWidget();
+	this.layout = layout;
+}
+
+/**
+ * If the argument is <code>true</code>, causes subsequent layout
+ * operations in the receiver or any of its children to be ignored.
+ * No layout of any kind can occur in the receiver or any of its
+ * children until the flag is set to false.
+ * Layout operations that occurred while the flag was
+ * <code>true</code> are remembered and when the flag is set to
+ * <code>false</code>, the layout operations are performed in an
+ * optimized manner.  Nested calls to this method are stacked.
+ *
+ * @param defer the new defer 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>
+ *
+ * @see #layout(boolean)
+ * @see #layout(Control[])
+ *
+ * @since 3.1
+ */
+public void setLayoutDeferred (boolean defer) {
+	if (!defer) {
+		if (--layoutCount == 0) {
+			if ((state & LAYOUT_CHILD) != 0 || (state & LAYOUT_NEEDED) != 0) {
+				updateLayout (true);
+			}
+		}
+	} else {
+		layoutCount++;
+	}
+}
+
+boolean setScrollBarVisible (ScrollBar bar, boolean visible) {
+	boolean changed = super.setScrollBarVisible (bar, visible);
+	if (changed && layout != null) {
+		markLayout (false, false);
+		updateLayout (false);
+	}
+	return changed;
+}
+
+boolean setTabGroupFocus (boolean next) {
+	if (isTabItem ()) return setTabItemFocus (next);
+	boolean takeFocus = (style & SWT.NO_FOCUS) == 0;
+	if ((state & CANVAS) != 0) takeFocus = hooksKeys ();
+	if (socketHandle != 0) takeFocus = true;
+	if (takeFocus  && setTabItemFocus (next)) return true;
+	Control [] children = _getChildren ();
+	for (int i=0; i<children.length; i++) {
+		Control child = children [i];
+		if (child.isTabItem () && child.setTabItemFocus (next)) return true;
+	}
+	return false;
+}
+
+boolean setTabItemFocus (boolean next) {
+	if (!super.setTabItemFocus (next)) return false;
+	if (socketHandle != 0) {
+		int direction = next ? OS.GTK_DIR_TAB_FORWARD : OS.GTK_DIR_TAB_BACKWARD;
+		OS.GTK_WIDGET_UNSET_FLAGS (socketHandle, OS.GTK_HAS_FOCUS);
+		OS.gtk_widget_child_focus (socketHandle, direction);
+		OS.GTK_WIDGET_SET_FLAGS (socketHandle, OS.GTK_HAS_FOCUS);
+	}
+	return true;
+}
+
+/**
+ * Sets the tabbing order for the specified controls to
+ * match the order that they occur in the argument list.
+ *
+ * @param tabList the ordered list of controls representing the tab order or null
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li>
+ *    <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</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 setTabList (Control [] tabList) {
+	checkWidget ();
+	if (tabList != null) {
+		for (int i=0; i<tabList.length; i++) {
+			Control control = tabList [i];
+			if (control == null) error (SWT.ERROR_INVALID_ARGUMENT);
+			if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+			if (control.parent != this) error (SWT.ERROR_INVALID_PARENT);
+		}
+		Control [] newList = new Control [tabList.length];
+		System.arraycopy (tabList, 0, newList, 0, tabList.length);
+		tabList = newList;
+	}
+	this.tabList = tabList;
+}
+
+void showWidget () {
+	super.showWidget ();
+	if (socketHandle != 0) {
+		OS.gtk_widget_show (socketHandle);
+		embeddedHandle = OS.gtk_socket_get_id (socketHandle);
+	}
+	if (scrolledHandle == 0) fixStyle (handle);
+}
+
+boolean translateMnemonic (Event event, Control control) {
+	if (super.translateMnemonic (event, control)) return true;
+	if (control != null) {
+		Control [] children = _getChildren ();
+		for (int i=0; i<children.length; i++) {
+			Control child = children [i];
+			if (child.translateMnemonic (event, control)) return true;
+		}
+	}
+	return false;
+}
+
+int traversalCode(int key, GdkEventKey event) {
+	if ((state & CANVAS) != 0) {
+		if ((style & SWT.NO_FOCUS) != 0) return 0;
+		if (hooksKeys ()) return 0;
+	}
+	return super.traversalCode (key, event);
+}
+
+boolean translateTraversal (GdkEventKey keyEvent) {
+	if (socketHandle != 0) return false;
+	return super.translateTraversal (keyEvent);
+}
+
+void updateBackgroundMode () {
+	super.updateBackgroundMode ();
+	Control [] children = _getChildren ();
+	for (int i = 0; i < children.length; i++) {
+		children [i].updateBackgroundMode ();
+	}
+}
+
+void updateLayout (boolean all) {
+	Composite parent = findDeferredControl ();
+	if (parent != null) {
+		parent.state |= LAYOUT_CHILD;
+		return;
+	}
+	if ((state & LAYOUT_NEEDED) != 0) {
+		boolean changed = (state & LAYOUT_CHANGED) != 0;
+		state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED);
+		layout.layout (this, changed);
+	}
+	if (all) {
+		state &= ~LAYOUT_CHILD;
+		Control [] children = _getChildren ();
+		for (int i=0; i<children.length; i++) {
+			children [i].updateLayout (all);
+		}
+	}
+}
+}
++/
\ No newline at end of file