restore HEAD after accidental deletion by error in automated build script

1 files changed, 697 insertions, 0 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeColumn.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeColumn.java
new file mode 100644
index 0000000000..a3b6ee52ff
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeColumn.java
@@ -0,0 +1,697 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2009 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.widgets;
+
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.internal.gtk.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.events.*;
+
+/**
+ * Instances of this class represent a column in a tree widget.
+ * <p><dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>LEFT, RIGHT, CENTER</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd> Move, Resize, Selection</dd>
+ * </dl>
+ * </p><p>
+ * Note: Only one of the styles LEFT, RIGHT and CENTER may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ *
+ * @see <a href="http://www.eclipse.org/swt/snippets/#tree">Tree, TreeItem, TreeColumn snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ * 
+ * @since 3.1
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class TreeColumn extends Item {
+	int /*long*/ labelHandle, imageHandle, buttonHandle;
+	Tree parent;
+	int modelIndex, lastButton, lastTime, lastX, lastWidth;
+	boolean customDraw, useFixedWidth;
+	String toolTipText;
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code>) and a style value
+ * describing its behavior and appearance. The item is added
+ * to the end of the items maintained by its parent.
+ * <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#LEFT
+ * @see SWT#RIGHT
+ * @see SWT#CENTER
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeColumn (Tree parent, int style) {
+	super (parent, checkStyle (style));
+	this.parent = parent;
+	createWidget (parent.getColumnCount ());
+}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code>), a style value
+ * describing its behavior and appearance, and the index
+ * at which to place it in the items maintained by its parent.
+ * <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>
+ * <p>
+ * Note that due to a restriction on some platforms, the first column
+ * is always left aligned.
+ * </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
+ * @param index the zero-relative index to store the receiver in its parent
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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#LEFT
+ * @see SWT#RIGHT
+ * @see SWT#CENTER
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeColumn (Tree parent, int style, int index) {
+	super (parent, checkStyle (style));
+	this.parent = parent;
+	createWidget (index);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the control is moved or resized, by sending
+ * it one of the messages defined in the <code>ControlListener</code>
+ * interface.
+ *
+ * @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 ControlListener
+ * @see #removeControlListener
+ */
+public void addControlListener(ControlListener listener) {
+	checkWidget();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	TypedListener typedListener = new TypedListener (listener);
+	addListener (SWT.Resize,typedListener);
+	addListener (SWT.Move,typedListener);
+}
+
+/**
+ * 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 column header is selected.
+ * <code>widgetDefaultSelected</code> is not called.
+ * </p>
+ *
+ * @param listener the listener which should be notified when the control is selected by the user
+ *
+ * @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);
+}
+
+static int checkStyle (int style) {
+	return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
+}
+
+protected void checkSubclass () {
+	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+void createWidget (int index) {
+	parent.createItem (this, index);
+	setOrientation ();
+	hookEvents ();
+	register ();
+	text = "";
+}
+
+void deregister() {
+	super.deregister ();
+	display.removeWidget (handle);
+	if (buttonHandle != 0) display.removeWidget (buttonHandle);
+	if (labelHandle != 0) display.removeWidget (labelHandle);
+}
+
+void destroyWidget () {
+	parent.destroyItem (this);
+	releaseHandle ();
+}
+
+/**
+ * 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>.
+ *
+ * @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.LEFT) != 0) return SWT.LEFT;
+	if ((style & SWT.CENTER) != 0) return SWT.CENTER;
+	if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
+	return SWT.LEFT;
+}
+
+/**
+ * Gets the moveable attribute. A column that is
+ * not moveable cannot be reordered by the user 
+ * by dragging the header but may be reordered 
+ * by the programmer.
+ *
+ * @return the moveable attribute
+ *
+ * @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 Tree#getColumnOrder()
+ * @see Tree#setColumnOrder(int[])
+ * @see TreeColumn#setMoveable(boolean)
+ * @see SWT#Move
+ * 
+ * @since 3.2
+ */
+public boolean getMoveable() {
+	checkWidget();
+	return OS.gtk_tree_view_column_get_reorderable (handle);
+}
+
+/**
+ * Returns the receiver's parent, which must be a <code>Tree</code>.
+ *
+ * @return the receiver's parent
+ *
+ * @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 Tree getParent () {
+	checkWidget();
+	return parent;
+}
+
+/**
+ * Gets the resizable attribute. A column that is
+ * not resizable cannot be dragged by the user but
+ * may be resized by the programmer.
+ *
+ * @return the resizable attribute
+ *
+ * @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 getResizable () {
+	checkWidget();
+	return OS.gtk_tree_view_column_get_resizable (handle);
+}
+
+/**
+ * Returns the receiver's tool tip text, or null if it has
+ * not been set.
+ *
+ * @return the receiver's tool tip 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>
+ * 
+ * @since 3.2
+ */
+public String getToolTipText () {
+	checkWidget();
+	return toolTipText;
+}
+
+/**
+ * Gets the width of the receiver.
+ *
+ * @return the width
+ *
+ * @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 getWidth () {
+	checkWidget();
+	if (!OS.gtk_tree_view_column_get_visible (handle)) {
+		return 0;
+	}
+	if (useFixedWidth) return OS.gtk_tree_view_column_get_fixed_width (handle);
+	return OS.gtk_tree_view_column_get_width (handle);
+}
+
+int /*long*/ gtk_clicked (int /*long*/ widget) {
+	/*
+	* There is no API to get a double click on a table column.  Normally, when
+	* the mouse is double clicked, this is indicated by GDK_2BUTTON_PRESS
+	* but the table column sends the click signal on button release.  The fix is to
+	* test for double click by remembering the last click time and mouse button
+	* and testing for the double click interval.
+	*/
+	boolean doubleClick = false;
+	boolean postEvent = true;
+	int /*long*/ eventPtr = OS.gtk_get_current_event ();
+	if (eventPtr != 0) {
+		GdkEventButton gdkEvent = new GdkEventButton ();
+		OS.memmove (gdkEvent, eventPtr, GdkEventButton.sizeof);
+		OS.gdk_event_free (eventPtr);
+		switch (gdkEvent.type) {
+			case OS.GDK_BUTTON_RELEASE: {
+				int clickTime = display.getDoubleClickTime ();
+				int eventTime = gdkEvent.time, eventButton = gdkEvent.button;
+				if (lastButton == eventButton && lastTime != 0 && Math.abs (lastTime - eventTime) <= clickTime) {
+					doubleClick = true;
+				}
+				lastTime = eventTime == 0 ? 1: eventTime;
+				lastButton = eventButton;
+				break;
+			}
+			case OS.GDK_MOTION_NOTIFY: {
+				/*
+				* Bug in GTK.  Dragging a column in a GtkTreeView causes a clicked 
+				* signal to be emitted even though the mouse button was never released.
+				* The fix to ignore the signal if the current GDK event is a motion notify.
+				* The GTK bug was fixed in version 2.6
+				*/
+				if (OS.GTK_VERSION < OS.VERSION (2, 6, 0)) postEvent = false;
+				break;
+			}
+		}
+	}
+	if (postEvent) postEvent (doubleClick ? SWT.DefaultSelection : SWT.Selection);
+	return 0;
+}
+
+int /*long*/ gtk_event_after (int /*long*/ widget, int /*long*/ gdkEvent) {
+	GdkEvent event = new GdkEvent ();
+	OS.memmove (event, gdkEvent, GdkEvent.sizeof);
+	switch (event.type) {
+		case OS.GDK_BUTTON_PRESS: {
+			GdkEventButton gdkEventButton = new GdkEventButton ();
+			OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
+			if (gdkEventButton.button == 3) {
+				parent.showMenu ((int) gdkEventButton.x_root, (int) gdkEventButton.y_root);
+			}
+			break;
+		}
+	}
+	return 0;
+}
+
+int /*long*/ gtk_mnemonic_activate (int /*long*/ widget, int /*long*/ arg1) {
+	return parent.gtk_mnemonic_activate (widget, arg1);
+}
+
+int /*long*/ gtk_size_allocate (int /*long*/ widget, int /*long*/ allocation) {
+	useFixedWidth = false;
+	int x = OS.GTK_WIDGET_X (widget);
+	int width = OS.GTK_WIDGET_WIDTH (widget);
+	if (x != lastX) {
+		lastX = x;
+		sendEvent (SWT.Move);
+	}
+	if (width != lastWidth) {
+		lastWidth = width;
+		sendEvent (SWT.Resize);
+	}
+	return 0;
+}
+
+void hookEvents () {
+	super.hookEvents ();
+	OS.g_signal_connect_closure (handle, OS.clicked, display.closures [CLICKED], false);
+	if (buttonHandle != 0) {
+		OS.g_signal_connect_closure_by_id (buttonHandle, display.signalIds [SIZE_ALLOCATE], 0, display.closures [SIZE_ALLOCATE], false);
+		OS.g_signal_connect_closure_by_id (buttonHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
+	}
+	if (labelHandle != 0) OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false);
+}
+
+/**
+ * Causes the receiver to be resized to its preferred size.
+ * For a composite, this involves computing the preferred size
+ * from its layout, if there is one.
+ *
+ * @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 pack () {
+	checkWidget();
+	int width = 0;
+	if (buttonHandle != 0) {
+		GtkRequisition requisition = new GtkRequisition ();
+		OS.gtk_widget_size_request (buttonHandle, requisition);
+		width = requisition.width;
+	}
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		//NOT DONE
+	} else {
+		int /*long*/ iter = OS.g_malloc (OS.GtkTreeIter_sizeof ());
+		if (OS.gtk_tree_model_get_iter_first (parent.modelHandle, iter)) {
+			do {
+				width = Math.max (width, parent.calculateWidth (handle, iter, true));
+			} while (OS.gtk_tree_model_iter_next(parent.modelHandle, iter));
+		}
+		OS.g_free (iter);
+	}
+	setWidth(width);
+}
+
+void register () {
+	super.register ();
+	display.addWidget (handle, this);
+	if (buttonHandle != 0) display.addWidget (buttonHandle, this);
+	if (labelHandle != 0) display.addWidget (labelHandle, this);
+}
+
+void releaseHandle () {
+	super.releaseHandle ();
+	handle = buttonHandle = labelHandle = imageHandle = 0;
+	modelIndex = -1;
+	parent = null;
+}
+
+void releaseParent () {
+	super.releaseParent ();
+	if (parent.sortColumn == this) {
+		parent.sortColumn = null;
+	}
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the control is moved or resized.
+ *
+ * @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 ControlListener
+ * @see #addControlListener
+ */
+public void removeControlListener (ControlListener listener) {
+	checkWidget();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable == null) return;
+	eventTable.unhook (SWT.Move, listener);
+	eventTable.unhook (SWT.Resize, listener);
+}
+
+/**
+ * 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);	
+}
+
+/**
+ * Controls how text and images will be displayed in the receiver.
+ * The argument should be one of <code>LEFT</code>, <code>RIGHT</code>
+ * or <code>CENTER</code>.
+ * <p>
+ * Note that due to a restriction on some platforms, the first column
+ * is always left aligned.
+ * </p>
+ * @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 ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return;
+	int index = parent.indexOf (this);
+	if (index == -1 || index == 0) return;
+	style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
+	style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
+	parent.createRenderers (handle, modelIndex, index == 0, style);
+}
+
+void setFontDescription (int /*long*/ font) {
+	OS.gtk_widget_modify_font (labelHandle, font);
+	OS.gtk_widget_modify_font (imageHandle, font);
+}
+
+public void setImage (Image image) {
+	checkWidget ();
+	super.setImage (image);
+	if (image != null) {
+		ImageList headerImageList = parent.headerImageList;
+		if (headerImageList == null) {
+			headerImageList = parent.headerImageList = new ImageList ();
+		}
+		int imageIndex = headerImageList.indexOf (image);
+		if (imageIndex == -1) imageIndex = headerImageList.add (image);
+		int /*long*/ pixbuf = headerImageList.getPixbuf (imageIndex);
+		OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf);
+		OS.gtk_widget_show (imageHandle);
+	} else {
+		OS.gtk_image_set_from_pixbuf (imageHandle, 0);
+		OS.gtk_widget_hide (imageHandle);
+	}
+}
+
+/**
+ * Sets the moveable attribute.  A column that is
+ * moveable can be reordered by the user by dragging
+ * the header. A column that is not moveable cannot be 
+ * dragged by the user but may be reordered 
+ * by the programmer.
+ *
+ * @param moveable the moveable attribute
+ *
+ * @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 Tree#setColumnOrder(int[])
+ * @see Tree#getColumnOrder()
+ * @see TreeColumn#getMoveable()
+ * @see SWT#Move
+ * 
+ * @since 3.2
+ */
+public void setMoveable (boolean moveable) {
+	checkWidget();
+	OS.gtk_tree_view_column_set_reorderable (handle, moveable);
+}
+
+void setOrientation() {
+	if ((parent.style & SWT.RIGHT_TO_LEFT) != 0) {
+		if (buttonHandle != 0) {
+			OS.gtk_widget_set_direction (buttonHandle, OS.GTK_TEXT_DIR_RTL);
+			OS.gtk_container_forall (buttonHandle, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL);	
+		}
+	}
+}
+
+/**
+ * Sets the resizable attribute.  A column that is
+ * not resizable cannot be dragged by the user but
+ * may be resized by the programmer.
+ *
+ * @param resizable the resize attribute
+ *
+ * @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 setResizable (boolean resizable) {
+	checkWidget();
+	OS.gtk_tree_view_column_set_resizable (handle, resizable);
+}
+
+public void setText (String string) {
+	checkWidget();
+	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+	super.setText (string);
+	char [] chars = fixMnemonic (string);
+	byte [] buffer = Converter.wcsToMbcs (null, chars, true);
+	OS.gtk_label_set_text_with_mnemonic (labelHandle, buffer);
+	if (string.length () != 0) {
+		OS.gtk_widget_show (labelHandle);
+	} else {
+		OS.gtk_widget_hide (labelHandle);
+	}
+}
+
+/**
+ * Sets the receiver's tool tip text to the argument, which
+ * may be null indicating that the default tool tip for the 
+ * control will be shown. For a control that has a default
+ * tool tip, such as the Tree control on Windows, setting
+ * the tool tip text to an empty string replaces the default,
+ * causing no tool tip text to be shown.
+ * <p>
+ * The mnemonic indicator (character '&amp;') is not displayed in a tool tip.
+ * To display a single '&amp;' in the tool tip, the character '&amp;' can be 
+ * escaped by doubling it in the string.
+ * </p>
+ * 
+ * @param string the new tool tip text (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>
+ * 
+ * @since 3.2
+ */
+public void setToolTipText (String string) {
+	checkWidget();
+	Shell shell = parent._getShell ();
+	setToolTipText (shell, string);
+	toolTipText = string;
+}
+
+void setToolTipText (Shell shell, String newString) {
+	shell.setToolTipText (buttonHandle, newString);
+}
+
+/**
+ * Sets the width of the receiver.
+ *
+ * @param width the new width
+ *
+ * @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 setWidth (int width) {
+	checkWidget();
+	if (width < 0) return;
+	if (width == lastWidth) return;
+	if (width > 0) {
+		useFixedWidth = true;
+		OS.gtk_tree_view_column_set_fixed_width (handle, width);
+	}
+	/*
+	 * Bug in GTK.  For some reason, calling gtk_tree_view_column_set_visible()
+	 * when the parent is not realized fails to show the column. The fix is to
+	 * ensure that the table has been realized.
+	 */
+	if (width != 0) OS.gtk_widget_realize (parent.handle);
+	OS.gtk_tree_view_column_set_visible (handle, width != 0);
+	lastWidth = width;
+	sendEvent (SWT.Resize);
+}
+
+}