restore HEAD after accidental deletion by error in automated build script

1 files changed, 1769 insertions, 0 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeItem.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeItem.java
new file mode 100644
index 0000000000..1102499b31
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/TreeItem.java
@@ -0,0 +1,1769 @@
+/*******************************************************************************
+ * 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.*;
+
+/**
+ * Instances of this class represent a selectable user interface object
+ * that represents a hierarchy of tree items in a tree widget.
+ * 
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>(none)</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>(none)</dd>
+ * </dl>
+ * <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>
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class TreeItem extends Item {
+	Tree parent;
+	Font font;
+	Font[] cellFont;
+	boolean cached, grayed;
+	static final int EXPANDER_EXTRA_PADDING = 4;
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code> or a <code>TreeItem</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 tree control which will be the parent of the new instance (cannot be null)
+ * @param style the style of control to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see SWT
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeItem (Tree parent, int style) {
+	this (checkNull (parent), 0, style, -1, true);
+}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code> or a <code>TreeItem</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>
+ *
+ * @param parent a tree 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
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeItem (Tree parent, int style, int index) {
+	this (checkNull (parent), 0, style, checkIndex (index), true);
+}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code> or a <code>TreeItem</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 parentItem a tree control which will be the parent of the new instance (cannot be null)
+ * @param style the style of control to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see SWT
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeItem (TreeItem parentItem, int style) {
+	this (checkNull (parentItem).parent, parentItem.handle, style, -1, true);
+}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tree</code> or a <code>TreeItem</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>
+ *
+ * @param parentItem a tree 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
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TreeItem (TreeItem parentItem, int style, int index) {
+	this (checkNull (parentItem).parent, parentItem.handle, style, checkIndex (index), true);
+}
+
+TreeItem (Tree parent, int /*long*/ parentIter, int style, int index, boolean create) {
+	super (parent, style);
+	this.parent = parent;
+	if (create) {
+		parent.createItem (this, parentIter, index);
+	} else {
+		handle = OS.g_malloc (OS.GtkTreeIter_sizeof ());
+		OS.gtk_tree_model_iter_nth_child (parent.modelHandle, handle, parentIter, index);
+	}
+}
+
+static int checkIndex (int index) {
+	if (index < 0) SWT.error (SWT.ERROR_INVALID_RANGE);
+	return index;
+}
+
+static TreeItem checkNull (TreeItem item) {
+	if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	return item;
+}
+
+static Tree checkNull (Tree control) {
+	if (control == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	return control;
+}
+
+protected void checkSubclass () {
+	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+Color _getBackground () {
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	OS.gtk_tree_model_get (parent.modelHandle, handle, Tree.BACKGROUND_COLUMN, ptr, -1);
+	if (ptr [0] == 0) return parent.getBackground ();
+	GdkColor gdkColor = new GdkColor ();
+	OS.memmove (gdkColor, ptr [0], GdkColor.sizeof);
+	return Color.gtk_new (display, gdkColor);
+}
+
+Color _getBackground (int index) {
+	int count = Math.max (1, parent.columnCount);
+	if (0 > index || index > count - 1) return _getBackground ();
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_model_get (parent.modelHandle, handle, modelIndex + Tree.CELL_BACKGROUND, ptr, -1);
+	if (ptr [0] == 0) return _getBackground ();
+	GdkColor gdkColor = new GdkColor ();
+	OS.memmove (gdkColor, ptr [0], GdkColor.sizeof);
+	return Color.gtk_new (display, gdkColor);
+}
+
+boolean _getChecked () {
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	OS.gtk_tree_model_get (parent.modelHandle, handle, Tree.CHECKED_COLUMN, ptr, -1);
+	return ptr [0] != 0;
+}
+
+Color _getForeground () {
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	OS.gtk_tree_model_get (parent.modelHandle, handle, Tree.FOREGROUND_COLUMN, ptr, -1);
+	if (ptr [0] == 0) return parent.getForeground ();
+	GdkColor gdkColor = new GdkColor ();
+	OS.memmove (gdkColor, ptr [0], GdkColor.sizeof);
+	return Color.gtk_new (display, gdkColor);
+}
+
+Color _getForeground (int index) {
+	int count = Math.max (1, parent.columnCount);
+	if (0 > index || index > count - 1) return _getForeground ();
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	int modelIndex =  parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_model_get (parent.modelHandle, handle, modelIndex + Tree.CELL_FOREGROUND, ptr, -1);
+	if (ptr [0] == 0) return _getForeground ();
+	GdkColor gdkColor = new GdkColor ();
+	OS.memmove (gdkColor, ptr [0], GdkColor.sizeof);
+	return Color.gtk_new (display, gdkColor);
+}
+
+Image _getImage (int index) {
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return null;
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_model_get (parent.modelHandle, handle, modelIndex + Tree.CELL_PIXBUF, ptr, -1);
+	if (ptr [0] == 0) return null;
+	ImageList imageList = parent.imageList;
+	int imageIndex = imageList.indexOf (ptr [0]);
+	if (imageIndex == -1) return null;
+	return imageList.get (imageIndex);
+}
+
+String _getText (int index) {
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return "";
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_model_get (parent.modelHandle, handle, modelIndex + Tree.CELL_TEXT, ptr, -1);
+	if (ptr [0] == 0) return ""; //$NON-NLS-1$
+	int length = OS.strlen (ptr [0]);
+	byte[] buffer = new byte [length];
+	OS.memmove (buffer, ptr [0], length);
+	OS.g_free (ptr [0]);
+	return new String (Converter.mbcsToWcs (null, buffer));
+}
+
+void clear () {
+	if (parent.currentItem == this) return;
+	if (cached || (parent.style & SWT.VIRTUAL) == 0) {
+		int columnCount = OS.gtk_tree_model_get_n_columns (parent.modelHandle);
+		for (int i=Tree.CHECKED_COLUMN; i<columnCount; i++) {
+			OS.gtk_tree_store_set (parent.modelHandle, handle, i, 0, -1);
+		}
+		/*
+		* Bug in GTK.  When using fixed-height-mode,
+		* row changes do not cause the row to be repainted.  The fix is to
+		* invalidate the row when it is cleared.
+		*/
+		if ((parent.style & SWT.VIRTUAL) != 0) {
+			if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+				redraw ();
+			}
+		}
+	}
+	cached = false;
+	font = null;
+	cellFont = null;
+}
+
+/**
+ * Clears the item at the given zero-relative index in the receiver.
+ * The text, icon and other attributes of the item are set to the default
+ * value.  If the tree was created with the <code>SWT.VIRTUAL</code> style,
+ * these attributes are requested again as needed.
+ *
+ * @param index the index of the item to clear
+ * @param all <code>true</code> if all child items of the indexed item should be
+ * cleared recursively, and <code>false</code> otherwise
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 SWT#VIRTUAL
+ * @see SWT#SetData
+ * 
+ * @since 3.2
+ */
+public void clear (int index, boolean all) {
+	checkWidget ();
+	parent.clear (handle, index, all);
+}
+
+/**
+ * Clears all the items in the receiver. The text, icon and other
+ * attributes of the items are set to their default values. If the
+ * tree was created with the <code>SWT.VIRTUAL</code> style, these
+ * attributes are requested again as needed.
+ * 
+ * @param all <code>true</code> if all child items should be cleared
+ * recursively, 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>
+ * 
+ * @see SWT#VIRTUAL
+ * @see SWT#SetData
+ * 
+ * @since 3.2
+ */
+public void clearAll (boolean all) {
+	checkWidget ();
+	parent.clearAll (all, handle);
+}
+
+void destroyWidget () {
+	parent.releaseItem (this, false);
+	parent.destroyItem (this);
+	releaseHandle ();
+}
+
+/**
+ * Returns the receiver's background color.
+ *
+ * @return the background color
+ * 
+ * @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 2.0
+ * 
+ */
+public Color getBackground () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getBackground ();
+}
+
+/**
+ * Returns the background color at the given column index in the receiver.
+ *
+ * @param index the column index
+ * @return the background color
+ *
+ * @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 Color getBackground (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getBackground (index);
+}
+
+/**
+ * Returns a rectangle describing the receiver's size and location
+ * relative to its parent at a column in the tree.
+ *
+ * @param index the index that specifies the column
+ * @return the receiver's bounding column rectangle
+ *
+ * @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 Rectangle getBounds (int index) {
+	// TODO fully test on early and later versions of GTK
+	checkWidget();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int /*long*/ parentHandle = parent.handle;
+	int /*long*/ column = 0;
+	if (index >= 0 && index < parent.columnCount) {
+		column = parent.columns [index].handle;
+	} else {
+		column = OS.gtk_tree_view_get_column (parentHandle, index);
+	}
+	if (column == 0) return new Rectangle (0, 0, 0, 0);
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	OS.gtk_widget_realize (parentHandle);
+	GdkRectangle rect = new GdkRectangle ();
+	OS.gtk_tree_view_get_cell_area (parentHandle, path, column, rect);
+	if ((parent.getStyle () & SWT.MIRRORED) != 0) rect.x = parent.getClientWidth () - rect.width - rect.x;
+	
+	if (OS.GTK_VERSION < OS.VERSION (2, 8, 18) && OS.gtk_tree_view_get_expander_column (parentHandle) == column) {
+		int [] buffer = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, buffer, 0);
+		rect.x += buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+		rect.width -= buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+		OS.gtk_widget_style_get (parentHandle, OS.horizontal_separator, buffer, 0);
+		rect.x += buffer [0];
+		//rect.width -= buffer [0]; // TODO Is this required for some versions?
+	}
+	/*
+	* Bug in GTK. In GTK 2.8.x, the cell area is left aligned even
+	* when the widget is mirrored. The fix is to sum up the indentation
+	* of the expanders. 
+	*/
+	if ((parent.getStyle () & SWT.MIRRORED) != 0 && (OS.GTK_VERSION < OS.VERSION (2, 10, 0))) {
+		int depth = OS.gtk_tree_path_get_depth (path);
+		int [] expanderSize = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, expanderSize, 0);
+		rect.x += depth * (expanderSize[0] + TreeItem.EXPANDER_EXTRA_PADDING);  
+	}
+	OS.gtk_tree_path_free (path);
+	
+	if (index == 0 && (parent.style & SWT.CHECK) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 1, 3)) {
+			int [] x = new int [1], w = new int [1];
+			OS.gtk_tree_view_column_cell_get_position (column, parent.checkRenderer, x, w);
+			rect.x += x [0] + w [0];
+			rect.width -= x [0] + w [0];
+		} else {
+			int [] w = new int [1];
+			OS.gtk_cell_renderer_get_size (parent.checkRenderer, parentHandle, null, null, null, w, null);
+			int [] buffer = new int [1];
+			OS.gtk_widget_style_get (parentHandle, OS.horizontal_separator, buffer, 0);
+			rect.x += w [0]  + buffer [0];
+			rect.width -= w [0]  + buffer [0];
+		}
+	}
+	int width = OS.gtk_tree_view_column_get_visible (column) ? rect.width + 1 : 0;
+	return new Rectangle (rect.x, rect.y, width, rect.height + 1);
+}
+
+/**
+ * Returns a rectangle describing the receiver's size and location
+ * relative to its parent.
+ *
+ * @return the receiver's bounding rectangle
+ *
+ * @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 Rectangle getBounds () {
+	// TODO fully test on early and later versions of GTK
+	// shifted a bit too far right on later versions of GTK - however, old Tree also had this problem
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int /*long*/ parentHandle = parent.handle;
+	int /*long*/ column = OS.gtk_tree_view_get_column (parentHandle, 0);
+	if (column == 0) return new Rectangle (0, 0, 0, 0);
+	int /*long*/ textRenderer = parent.getTextRenderer (column);
+	int /*long*/ pixbufRenderer = parent.getPixbufRenderer (column);
+	if (textRenderer == 0 || pixbufRenderer == 0)  return new Rectangle (0, 0, 0, 0);
+
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	OS.gtk_widget_realize (parentHandle);
+	
+	boolean isExpander = OS.gtk_tree_model_iter_n_children (parent.modelHandle, handle) > 0;
+	boolean isExpanded = OS.gtk_tree_view_row_expanded (parentHandle, path);
+	OS.gtk_tree_view_column_cell_set_cell_data (column, parent.modelHandle, handle, isExpander, isExpanded);
+	
+	GdkRectangle rect = new GdkRectangle ();
+	OS.gtk_tree_view_get_cell_area (parentHandle, path, column, rect);
+	if ((parent.getStyle () & SWT.MIRRORED) != 0) rect.x = parent.getClientWidth () - rect.width - rect.x;
+	int right = rect.x + rect.width;
+
+	int [] x = new int [1], w = new int [1];
+	parent.ignoreSize = true;
+	OS.gtk_cell_renderer_get_size (textRenderer, parentHandle, null, null, null, w, null);
+	parent.ignoreSize = false;
+	rect.width = w [0];
+	int [] buffer = new int [1];
+	if (OS.GTK_VERSION < OS.VERSION (2, 8, 18) && OS.gtk_tree_view_get_expander_column (parentHandle) == column) {
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, buffer, 0);
+		rect.x += buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+	}
+	/*
+	* Bug in GTK. In GTK 2.8.x, the cell area is left aligned even
+	* when the widget is mirrored. The fix is to sum up the indentation
+	* of the expanders. 
+	*/
+	if ((parent.getStyle () & SWT.MIRRORED) != 0 && (OS.GTK_VERSION < OS.VERSION (2, 10, 0))) {
+		int depth = OS.gtk_tree_path_get_depth (path);
+		int [] expanderSize = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, expanderSize, 0);
+		rect.x += depth * (expanderSize[0] + TreeItem.EXPANDER_EXTRA_PADDING); 
+	}
+	OS.gtk_tree_path_free (path);
+	
+	OS.gtk_widget_style_get (parentHandle, OS.horizontal_separator, buffer, 0);
+	int horizontalSeparator = buffer[0];
+	rect.x += horizontalSeparator;
+	
+	if (OS.GTK_VERSION >= OS.VERSION (2, 1, 3)) {
+		OS.gtk_tree_view_column_cell_get_position (column, textRenderer, x, null);
+		rect.x += x [0];
+	} else {
+		if ((parent.style & SWT.CHECK) != 0) {
+			OS.gtk_cell_renderer_get_size (parent.checkRenderer, parentHandle, null, null, null, w, null);
+			rect.x += w [0] + horizontalSeparator;
+		}
+		OS.gtk_cell_renderer_get_size (pixbufRenderer, parentHandle, null, null, null, w, null);
+		rect.x += w [0] + horizontalSeparator;
+	}
+	if (parent.columnCount > 0) {
+		if (rect.x + rect.width > right) {
+			rect.width = Math.max (0, right - rect.x);
+		}
+	}
+	int width = OS.gtk_tree_view_column_get_visible (column) ? rect.width + 1 : 0;
+	return new Rectangle (rect.x, rect.y, width, rect.height + 1);
+}
+
+/**
+ * Returns <code>true</code> if the receiver is checked,
+ * and false otherwise.  When the parent does not have
+ * the <code>CHECK style, return false.
+ * <p>
+ *
+ * @return the checked 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 getChecked () {
+	checkWidget();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	if ((parent.style & SWT.CHECK) == 0) return false;
+	return _getChecked ();
+}
+
+/**
+ * Returns <code>true</code> if the receiver is expanded,
+ * and false otherwise.
+ * <p>
+ *
+ * @return the expanded 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 getExpanded () {
+	checkWidget();
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	boolean answer = OS.gtk_tree_view_row_expanded (parent.handle, path);
+	OS.gtk_tree_path_free (path);
+	return answer;
+}
+
+/**
+ * Returns the font that the receiver will use to paint textual information for this item.
+ *
+ * @return the receiver's font
+ *
+ * @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 3.0
+ */
+public Font getFont () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return font != null ? font : parent.getFont ();
+}
+
+/**
+ * Returns the font that the receiver will use to paint textual information
+ * for the specified cell in this item.
+ *
+ * @param index the column index
+ * @return the receiver's font
+ *
+ * @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 Font getFont (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int count = Math.max (1, parent.columnCount);
+	if (0 > index || index > count - 1) return getFont ();
+	if (cellFont == null || cellFont [index] == null) return getFont ();
+	return cellFont [index];
+}
+
+
+/**
+ * Returns the foreground color that the receiver will use to draw.
+ *
+ * @return the receiver's foreground color
+ *
+ * @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 2.0
+ * 
+ */
+public Color getForeground () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getForeground ();
+}
+
+/**
+ * 
+ * Returns the foreground color at the given column index in the receiver.
+ *
+ * @param index the column index
+ * @return the foreground color
+ *
+ * @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 Color getForeground (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getForeground (index);
+}
+
+/**
+ * Returns <code>true</code> if the receiver is grayed,
+ * and false otherwise. When the parent does not have
+ * the <code>CHECK style, return false.
+ * <p>
+ *
+ * @return the grayed state of the checkbox
+ *
+ * @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 getGrayed () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	if ((parent.style & SWT.CHECK) == 0) return false;
+	return grayed;
+}
+
+public Image getImage () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return getImage (0);
+}
+
+/**
+ * Returns the image stored at the given column index in the receiver,
+ * or null if the image has not been set or if the column does not exist.
+ *
+ * @param index the column index
+ * @return the image stored at the given column index in the receiver
+ *
+ * @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 Image getImage (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getImage (index);
+}
+
+/**
+ * Returns a rectangle describing the size and location
+ * relative to its parent of an image at a column in the
+ * tree.
+ *
+ * @param index the index that specifies the column
+ * @return the receiver's bounding image rectangle
+ *
+ * @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 Rectangle getImageBounds (int index) {
+	// TODO fully test on early and later versions of GTK
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int /*long*/ parentHandle = parent.handle;
+	int /*long*/ column = 0;
+	if (index >= 0 && index < parent.getColumnCount ()) {
+		column = parent.columns [index].handle;
+	} else {
+		column = OS.gtk_tree_view_get_column (parentHandle, index);
+	}
+	if (column == 0) return new Rectangle (0, 0, 0, 0);
+	int /*long*/ pixbufRenderer = parent.getPixbufRenderer (column);
+	if (pixbufRenderer == 0)  return new Rectangle (0, 0, 0, 0);
+	GdkRectangle rect = new GdkRectangle ();
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	OS.gtk_widget_realize (parentHandle);
+	OS.gtk_tree_view_get_cell_area (parentHandle, path, column, rect);
+	if ((parent.getStyle () & SWT.MIRRORED) != 0) rect.x = parent.getClientWidth () - rect.width - rect.x;
+	if (OS.GTK_VERSION < OS.VERSION (2, 8, 18) && OS.gtk_tree_view_get_expander_column (parentHandle) == column) {
+		int [] buffer = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, buffer, 0);
+		rect.x += buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+		rect.width -= buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+		//OS.gtk_widget_style_get (parentHandle, OS.horizontal_separator, buffer, 0);
+		//int horizontalSeparator = buffer[0];
+		//rect.x += horizontalSeparator;
+	}
+	/*
+	* Bug in GTK. In GTK 2.8.x, the cell area is left aligned even
+	* when the widget is mirrored. The fix is to sum up the indentation
+	* of the expanders. 
+	*/
+	if ((parent.getStyle () & SWT.MIRRORED) != 0 && (OS.GTK_VERSION < OS.VERSION (2, 10, 0))) {
+		int depth = OS.gtk_tree_path_get_depth (path);
+		int [] expanderSize = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, expanderSize, 0);
+		rect.x += depth * (expanderSize[0] + TreeItem.EXPANDER_EXTRA_PADDING);  
+	}
+	OS.gtk_tree_path_free (path);
+	
+	/*
+	* The OS call gtk_cell_renderer_get_size() provides the width of image to be drawn
+	* by the cell renderer.  If there is no image in the cell, the width is zero.  If the table contains
+	* images of varying widths, gtk_cell_renderer_get_size() will return the width of the image, 
+	* not the width of the area in which the image is drawn.
+	* New API was added in GTK 2.1.3 for determining the full width of the renderer area.
+	* For earlier versions of GTK, the result is only correct if all rows have images of the same
+	* width.
+	*/
+	if (OS.GTK_VERSION >= OS.VERSION (2, 1, 3)) {
+		int [] x = new int [1], w = new int[1];
+		OS.gtk_tree_view_column_cell_get_position (column, pixbufRenderer, x, w);
+		rect.x += x [0];
+		rect.width = w [0];
+	} else {
+		int [] w = new int [1];
+		OS.gtk_tree_view_column_cell_set_cell_data (column, parent.modelHandle, handle, false, false);
+		OS.gtk_cell_renderer_get_size (pixbufRenderer, parentHandle, null, null, null, w, null);
+		rect.width = w [0];
+	}
+	int width = OS.gtk_tree_view_column_get_visible (column) ? rect.width : 0;
+	return new Rectangle (rect.x, rect.y, width, rect.height + 1);
+}
+
+/**
+ * Returns the number of items contained in the receiver
+ * that are direct item children of the receiver.
+ *
+ * @return the number of items
+ *
+ * @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 getItemCount () {
+	checkWidget();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return OS.gtk_tree_model_iter_n_children (parent.modelHandle, handle);
+}
+
+/**
+ * Returns the item at the given, zero-relative index in the
+ * receiver. Throws an exception if the index is out of range.
+ *
+ * @param index the index of the item to return
+ * @return the item at the given index
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 TreeItem getItem (int index) {
+	checkWidget();
+	if (index < 0) error (SWT.ERROR_INVALID_RANGE);
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int itemCount = OS.gtk_tree_model_iter_n_children (parent.modelHandle, handle);
+	if (index >= itemCount)  error (SWT.ERROR_INVALID_RANGE);
+	return  parent._getItem (handle, index);
+}
+
+/**
+ * Returns a (possibly empty) array of <code>TreeItem</code>s which
+ * are the direct item children of the receiver.
+ * <p>
+ * Note: This is not the actual structure used by the receiver
+ * to maintain its list of items, so modifying the array will
+ * not affect the receiver. 
+ * </p>
+ *
+ * @return the receiver's items
+ *
+ * @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 TreeItem [] getItems () {
+	checkWidget();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return parent.getItems (handle);
+}
+
+String getNameText () {
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (!cached) return "*virtual*"; //$NON-NLS-1$
+	}
+	return super.getNameText ();
+}
+
+/**
+ * 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;
+}
+
+/**
+ * Returns the receiver's parent item, which must be a
+ * <code>TreeItem</code> or null when the receiver is a
+ * root.
+ *
+ * @return the receiver's parent item
+ *
+ * @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 TreeItem getParentItem () {
+	checkWidget();
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	TreeItem item = null;
+	int depth = OS.gtk_tree_path_get_depth (path); 
+	if (depth > 1) {
+		OS.gtk_tree_path_up (path);
+		int /*long*/ iter = OS.g_malloc (OS.GtkTreeIter_sizeof ());
+		if (OS.gtk_tree_model_get_iter (parent.modelHandle, iter, path)) {
+			item = parent._getItem (iter);
+		}
+		OS.g_free (iter);
+	}
+	OS.gtk_tree_path_free (path);
+	return item;
+}
+
+public String getText () {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return getText (0);
+}
+
+/**
+ * Returns the text stored at the given column index in the receiver,
+ * or empty string if the text has not been set.
+ *
+ * @param index the column index
+ * @return the text stored at the given column index in the receiver
+ *
+ * @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 String getText (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	return _getText (index);
+}
+
+/**
+ * Returns a rectangle describing the size and location
+ * relative to its parent of the text at a column in the
+ * tree.
+ *
+ * @param index the index that specifies the column
+ * @return the receiver's bounding text rectangle
+ *
+ * @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 3.3
+ */
+public Rectangle getTextBounds (int index) {
+	checkWidget ();
+	if (!parent.checkData (this)) error (SWT.ERROR_WIDGET_DISPOSED);
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return new Rectangle (0, 0, 0, 0);
+	// TODO fully test on early and later versions of GTK
+	// shifted a bit too far right on later versions of GTK - however, old Tree also had this problem
+	int /*long*/ parentHandle = parent.handle;
+	int /*long*/ column = 0;
+	if (index >= 0 && index < parent.columnCount) {
+		column = parent.columns [index].handle;
+	} else {
+		column = OS.gtk_tree_view_get_column (parentHandle, index);
+	}
+	if (column == 0) return new Rectangle (0, 0, 0, 0);
+	int /*long*/ textRenderer = parent.getTextRenderer (column);
+	int /*long*/ pixbufRenderer = parent.getPixbufRenderer (column);
+	if (textRenderer == 0 || pixbufRenderer == 0)  return new Rectangle (0, 0, 0, 0);
+
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	OS.gtk_widget_realize (parentHandle);
+	
+	boolean isExpander = OS.gtk_tree_model_iter_n_children (parent.modelHandle, handle) > 0;
+	boolean isExpanded = OS.gtk_tree_view_row_expanded (parentHandle, path);
+	OS.gtk_tree_view_column_cell_set_cell_data (column, parent.modelHandle, handle, isExpander, isExpanded);
+	
+	GdkRectangle rect = new GdkRectangle ();
+	OS.gtk_tree_view_get_cell_area (parentHandle, path, column, rect);
+	if ((parent.getStyle () & SWT.MIRRORED) != 0) rect.x = parent.getClientWidth () - rect.width - rect.x;
+	int right = rect.x + rect.width;
+
+	int [] x = new int [1], w = new int [1];
+	parent.ignoreSize = true;
+	OS.gtk_cell_renderer_get_size (textRenderer, parentHandle, null, null, null, w, null);
+	parent.ignoreSize = false;
+	int [] buffer = new int [1];
+	if (OS.GTK_VERSION < OS.VERSION (2, 8, 18) && OS.gtk_tree_view_get_expander_column (parentHandle) == column) {
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, buffer, 0);
+		rect.x += buffer [0] + TreeItem.EXPANDER_EXTRA_PADDING;
+	}
+	/*
+	* Bug in GTK. In GTK 2.8.x, the cell area is left aligned even
+	* when the widget is mirrored. The fix is to sum up the indentation
+	* of the expanders. 
+	*/
+	if ((parent.getStyle () & SWT.MIRRORED) != 0 && (OS.GTK_VERSION < OS.VERSION (2, 10, 0))) {
+		int depth = OS.gtk_tree_path_get_depth (path);
+		int [] expanderSize = new int [1];
+		OS.gtk_widget_style_get (parentHandle, OS.expander_size, expanderSize, 0);
+		rect.x += depth * (expanderSize[0] + TreeItem.EXPANDER_EXTRA_PADDING);  
+	}
+	OS.gtk_tree_path_free (path);
+	
+	OS.gtk_widget_style_get (parentHandle, OS.horizontal_separator, buffer, 0);
+	int horizontalSeparator = buffer[0];
+	rect.x += horizontalSeparator;
+	if (OS.GTK_VERSION >= OS.VERSION (2, 1, 3)) {
+		OS.gtk_tree_view_column_cell_get_position (column, textRenderer, x, null);
+		rect.x += x [0];
+	} else {
+		if ((parent.style & SWT.CHECK) != 0) {
+			OS.gtk_cell_renderer_get_size (parent.checkRenderer, parentHandle, null, null, null, w, null);
+			rect.x += w [0] + horizontalSeparator;
+		}
+		OS.gtk_cell_renderer_get_size (pixbufRenderer, parentHandle, null, null, null, w, null);
+		rect.x += w [0] + horizontalSeparator;
+	}
+	if (parent.columnCount > 0) {
+		if (rect.x + rect.width > right) {
+			rect.width = Math.max (0, right - rect.x);
+		}
+	}
+	int width = OS.gtk_tree_view_column_get_visible (column) ? rect.width + 1 : 0;
+	return new Rectangle (rect.x, rect.y, width, rect.height + 1);
+}
+
+/**
+ * Searches the receiver's list starting at the first item
+ * (index 0) until an item is found that is equal to the 
+ * argument, and returns the index of that item. If no item
+ * is found, returns -1.
+ *
+ * @param item the search item
+ * @return the index of the item
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the item is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the item 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>
+ * 
+ * @since 3.1
+ */
+public int indexOf (TreeItem item) {
+	checkWidget();
+	if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (item.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+	int index = -1;
+	boolean isParent = false;
+	int /*long*/ currentPath = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	int /*long*/ parentPath = OS.gtk_tree_model_get_path (parent.modelHandle, item.handle);
+	int depth = OS.gtk_tree_path_get_depth (parentPath);
+	if (depth > 1 && OS.gtk_tree_path_up(parentPath)) {
+		if (OS.gtk_tree_path_compare(currentPath, parentPath) == 0) isParent = true;
+	}
+	OS.gtk_tree_path_free (currentPath);
+	OS.gtk_tree_path_free (parentPath);
+	if (!isParent) return index;
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, item.handle);
+	if (depth > 1) {
+		int /*long*/ indices = OS.gtk_tree_path_get_indices (path);
+		if (indices != 0) {	
+			int[] temp = new int[depth];
+			OS.memmove (temp, indices, 4 * temp.length);
+			index = temp[temp.length - 1];
+		}
+	}
+	OS.gtk_tree_path_free (path);
+	return index;
+}
+
+void redraw () {
+	int /*long*/ parentHandle = parent.handle;
+	if ((OS.GTK_WIDGET_FLAGS (parentHandle) & OS.GTK_REALIZED) != 0) {
+		int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+		GdkRectangle rect = new GdkRectangle ();
+		OS.gtk_tree_view_get_cell_area (parentHandle, path, 0, rect);
+		OS.gtk_tree_path_free (path);
+		int /*long*/ window = OS.gtk_tree_view_get_bin_window (parentHandle);
+		rect.x = 0;
+		int [] w = new int [1], h = new int [1];
+		OS.gdk_drawable_get_size (window, w, h);
+		rect.width = w [0];
+		OS.gdk_window_invalidate_rect (window, rect, false);
+	}
+}
+
+void releaseChildren (boolean destroy) {
+	if (destroy) {
+		parent.releaseItems (handle);
+	}
+	super.releaseChildren (destroy);
+}
+
+void releaseHandle () {
+	if (handle != 0) OS.g_free (handle);
+	handle = 0;
+	super.releaseHandle ();
+	parent = null;
+}
+
+void releaseWidget () {
+	super.releaseWidget ();
+	font = null;
+	cellFont = null;
+}
+
+/**
+ * Removes all of the items from the receiver.
+ * <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>
+ *
+ * @since 3.1
+ */
+public void removeAll () {
+	checkWidget ();
+	int /*long*/ modelHandle = parent.modelHandle;
+	int length = OS.gtk_tree_model_iter_n_children (modelHandle, handle);
+	if (length == 0) return;
+	int /*long*/ iter = OS.g_malloc (OS.GtkTreeIter_sizeof ());
+	if (iter == 0) error (SWT.ERROR_NO_HANDLES);
+	if (parent.fixAccessibility ()) {
+		parent.ignoreAccessibility = true;
+	}
+	int /*long*/ selection = OS.gtk_tree_view_get_selection (parent.handle);
+	int [] value = new int [1];
+	while (OS.gtk_tree_model_iter_children (modelHandle, iter, handle)) {
+		OS.gtk_tree_model_get (modelHandle, iter, Tree.ID_COLUMN, value, -1);
+		TreeItem item = value [0] != -1 ? parent.items [value [0]] : null;
+		if (item != null && !item.isDisposed ()) {
+			item.dispose ();
+		} else {
+			OS.g_signal_handlers_block_matched (selection, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+			OS.gtk_tree_store_remove (modelHandle, iter);
+			OS.g_signal_handlers_unblock_matched (selection, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+		}
+	}
+	if (parent.fixAccessibility ()) {
+		parent.ignoreAccessibility = false;
+		OS.g_object_notify (parent.handle, OS.model);
+	}
+	OS.g_free (iter);
+}
+
+/**
+ * Sets the receiver's background color to the color specified
+ * by the argument, or to the default system color for the item
+ * if the argument is null.
+ *
+ * @param color the new color (or null)
+ * 
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 2.0
+ * 
+ */
+public void setBackground (Color color) {
+	checkWidget ();
+	if (color != null && color.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (_getBackground ().equals (color)) return;
+	GdkColor gdkColor = color != null ? color.handle : null;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.BACKGROUND_COLUMN, gdkColor, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+}
+
+/**
+ * Sets the background color at the given column index in the receiver 
+ * to the color specified by the argument, or to the default system color for the item
+ * if the argument is null.
+ *
+ * @param index the column index
+ * @param color the new color (or null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 3.1
+ * 
+ */
+public void setBackground (int index, Color color) {
+	checkWidget ();
+	if (color != null && color.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (_getBackground (index).equals (color)) return;
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return;
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	GdkColor gdkColor = color != null ? color.handle : null;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, modelIndex + Tree.CELL_BACKGROUND, gdkColor, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+	
+	if (color != null) {
+		boolean customDraw = (parent.columnCount == 0)  ? parent.firstCustomDraw : parent.columns [index].customDraw;
+		if (!customDraw) {
+			if ((parent.style & SWT.VIRTUAL) == 0) {
+				int /*long*/ parentHandle = parent.handle;
+				int /*long*/ column = 0;
+				if (parent.columnCount > 0) {
+					column = parent.columns [index].handle;
+				} else {
+					column = OS.gtk_tree_view_get_column (parentHandle, index);
+				}
+				if (column == 0) return;
+				int /*long*/ textRenderer = parent.getTextRenderer (column);
+				int /*long*/ imageRenderer = parent.getPixbufRenderer (column);
+				OS.gtk_tree_view_column_set_cell_data_func (column, textRenderer, display.cellDataProc, parentHandle, 0);
+				OS.gtk_tree_view_column_set_cell_data_func (column, imageRenderer, display.cellDataProc, parentHandle, 0);
+			}
+			if (parent.columnCount == 0) {
+				parent.firstCustomDraw = true;
+			} else {
+				parent.columns [index].customDraw = true;
+			}
+		}
+	}
+}
+
+/**
+ * Sets the checked state of the receiver.
+ * <p>
+ *
+ * @param checked the new checked 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 setChecked (boolean checked) {
+	checkWidget();
+	if ((parent.style & SWT.CHECK) == 0) return;
+	if (_getChecked () == checked) return;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.CHECKED_COLUMN, checked, -1);
+	/*
+	* GTK+'s "inconsistent" state does not match SWT's concept of grayed.  To
+	* show checked+grayed differently from unchecked+grayed, we must toggle the
+	* grayed state on check and uncheck. 
+	*/
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.GRAYED_COLUMN, !checked ? false : grayed, -1);
+	cached = true;
+}
+
+/**
+ * Sets the expanded state of the receiver.
+ * <p>
+ *
+ * @param expanded the new expanded 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 setExpanded (boolean expanded) {
+	checkWidget();
+	int /*long*/ path = OS.gtk_tree_model_get_path (parent.modelHandle, handle);
+	if (expanded) {
+		OS.g_signal_handlers_block_matched (parent.handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEST_EXPAND_ROW);
+		OS.gtk_tree_view_expand_row (parent.handle, path, false);
+		OS.g_signal_handlers_unblock_matched (parent.handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEST_EXPAND_ROW);
+	} else {
+		OS.g_signal_handlers_block_matched (parent.handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEST_COLLAPSE_ROW);
+		OS.gtk_widget_realize (parent.handle);
+		OS.gtk_tree_view_collapse_row (parent.handle, path);
+		OS.g_signal_handlers_unblock_matched (parent.handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEST_COLLAPSE_ROW);
+	}
+	OS.gtk_tree_path_free (path);
+	cached = true;
+}
+
+
+/**
+ * Sets the font that the receiver will use to paint textual information
+ * for this item to the font specified by the argument, or to the default font
+ * for that kind of control if the argument is null.
+ *
+ * @param font the new font (or null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 3.0
+ */
+public void setFont (Font font){
+	checkWidget ();
+	if (font != null && font.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	Font oldFont = this.font;
+	if (oldFont == font) return;
+	this.font = font;
+	if (oldFont != null && oldFont.equals (font)) return;
+	int /*long*/ fontHandle = font != null ? font.handle : 0;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.FONT_COLUMN, fontHandle, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+}
+
+/**
+ * Sets the font that the receiver will use to paint textual information
+ * for the specified cell in this item to the font specified by the 
+ * argument, or to the default font for that kind of control if the 
+ * argument is null.
+ *
+ * @param index the column index
+ * @param font the new font (or null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 3.1
+ */
+public void setFont (int index, Font font) {
+	checkWidget ();
+	if (font != null && font.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return;
+	if (cellFont == null) {
+		if (font == null) return;
+		cellFont = new Font [count];
+	}
+	Font oldFont = cellFont [index];
+	if (oldFont == font) return;
+	cellFont [index] = font;
+	if (oldFont != null && oldFont.equals (font)) return;
+	
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	int /*long*/ fontHandle  = font != null ? font.handle : 0;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, modelIndex + Tree.CELL_FONT, fontHandle, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+	
+	if (font != null) {
+		boolean customDraw = (parent.columnCount == 0)  ? parent.firstCustomDraw : parent.columns [index].customDraw;
+		if (!customDraw) {
+			if ((parent.style & SWT.VIRTUAL) == 0) {
+				int /*long*/ parentHandle = parent.handle;
+				int /*long*/ column = 0;
+				if (parent.columnCount > 0) {
+					column = parent.columns [index].handle;
+				} else {
+					column = OS.gtk_tree_view_get_column (parentHandle, index);
+				}
+				if (column == 0) return;
+				int /*long*/ textRenderer = parent.getTextRenderer (column);
+				int /*long*/ imageRenderer = parent.getPixbufRenderer (column);
+				OS.gtk_tree_view_column_set_cell_data_func (column, textRenderer, display.cellDataProc, parentHandle, 0);
+				OS.gtk_tree_view_column_set_cell_data_func (column, imageRenderer, display.cellDataProc, parentHandle, 0);
+			}
+			if (parent.columnCount == 0) {
+				parent.firstCustomDraw = true;
+			} else {
+				parent.columns [index].customDraw = true;
+			}
+		}
+	}
+}
+
+/**
+ * Sets the receiver's foreground color to the color specified
+ * by the argument, or to the default system color for the item
+ * if the argument is null.
+ *
+ * @param color the new color (or null)
+ *
+ * @since 2.0
+ * 
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 2.0
+ * 
+ */
+public void setForeground (Color color){
+	checkWidget ();
+	if (color != null && color.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (_getForeground ().equals (color)) return;
+	GdkColor gdkColor = color != null ? color.handle : null;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.FOREGROUND_COLUMN, gdkColor, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+}
+
+/**
+ * Sets the foreground color at the given column index in the receiver 
+ * to the color specified by the argument, or to the default system color for the item
+ * if the argument is null.
+ *
+ * @param index the column index
+ * @param color the new color (or null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the argument 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>
+ * 
+ * @since 3.1
+ * 
+ */
+public void setForeground (int index, Color color){
+	checkWidget ();
+	if (color != null && color.isDisposed ()) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (_getForeground (index).equals (color)) return;
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return;
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	GdkColor gdkColor = color != null ? color.handle : null;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, modelIndex + Tree.CELL_FOREGROUND, gdkColor, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when it is cleared.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+	
+	if (color != null) {
+		boolean customDraw = (parent.columnCount == 0)  ? parent.firstCustomDraw : parent.columns [index].customDraw;
+		if (!customDraw) {
+			if ((parent.style & SWT.VIRTUAL) == 0) {
+				int /*long*/ parentHandle = parent.handle;
+				int /*long*/ column = 0;
+				if (parent.columnCount > 0) {
+					column = parent.columns [index].handle;
+				} else {
+					column = OS.gtk_tree_view_get_column (parentHandle, index);
+				}
+				if (column == 0) return;
+				int /*long*/ textRenderer = parent.getTextRenderer (column);
+				int /*long*/ imageRenderer = parent.getPixbufRenderer (column);
+				OS.gtk_tree_view_column_set_cell_data_func (column, textRenderer, display.cellDataProc, parentHandle, 0);
+				OS.gtk_tree_view_column_set_cell_data_func (column, imageRenderer, display.cellDataProc, parentHandle, 0);
+			}
+			if (parent.columnCount == 0) {
+				parent.firstCustomDraw = true;
+			} else {
+				parent.columns [index].customDraw = true;
+			}
+		}
+	}
+}
+
+/**
+ * Sets the grayed state of the checkbox for this item.  This state change 
+ * only applies if the Tree was created with the SWT.CHECK style.
+ *
+ * @param grayed the new grayed state of the checkbox
+ *
+ * @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 setGrayed (boolean grayed) {
+	checkWidget();
+	if ((parent.style & SWT.CHECK) == 0) return;
+	if (this.grayed == grayed) return;
+	this.grayed = grayed;
+	/*
+	* GTK+'s "inconsistent" state does not match SWT's concept of grayed.
+	* Render checked+grayed as "inconsistent", unchecked+grayed as blank.
+	*/
+	int /*long*/ [] ptr = new int /*long*/ [1];
+	OS.gtk_tree_model_get (parent.modelHandle, handle, Tree.CHECKED_COLUMN, ptr, -1);
+	OS.gtk_tree_store_set (parent.modelHandle, handle, Tree.GRAYED_COLUMN, ptr [0] == 0 ? false : grayed, -1);
+	cached = true;
+}
+
+/**
+ * Sets the receiver's image at a column.
+ *
+ * @param index the column index
+ * @param image the new image
+ *
+ * @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>
+ * 
+ * @since 3.1
+ */
+public void setImage (int index, Image image) {
+	checkWidget ();
+	if (image != null && image.isDisposed()) {
+		error(SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (image != null && image.type == SWT.ICON) {
+		if (image.equals (_getImage (index))) return;
+	}
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return;
+	int /*long*/ pixbuf = 0;
+	if (image != null) {
+		ImageList imageList = parent.imageList;
+		if (imageList == null) imageList = parent.imageList = new ImageList ();
+		int imageIndex = imageList.indexOf (image);
+		if (imageIndex == -1) imageIndex = imageList.add (image);
+		pixbuf = imageList.getPixbuf (imageIndex);
+	}
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, modelIndex + Tree.CELL_PIXBUF, pixbuf, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when the image changes.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			if (parent.columnCount == 0) {
+				redraw ();
+			}
+		}
+	}
+	/*
+	* Bug in GTK.  When using fixed-height-mode, GTK does not recalculate the cell renderer width
+	* when the image is changed in the model.  The fix is to force it to recalculate the width if
+	* more space is required.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0 && parent.currentItem == null) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2)) {
+			if (image != null) {
+				int /*long*/parentHandle = parent.handle;
+				int /*long*/ column = OS.gtk_tree_view_get_column (parentHandle, index);
+				int [] w = new int [1];
+				int /*long*/ pixbufRenderer = parent.getPixbufRenderer(column);
+				OS.gtk_tree_view_column_cell_get_position (column, pixbufRenderer, null, w);
+				if (w[0] < image.getBounds().width) {
+					/*
+					 * There is no direct way to clear the cell renderer width so we
+					 * are relying on the fact that it is done as part of modifying
+					 * the style.
+					 */
+					int /*long*/ style = OS.gtk_widget_get_modifier_style (parentHandle);
+					parent.modifyStyle (parentHandle, style);
+				}
+			} 
+		}
+	}
+	cached = true;
+}
+
+public void setImage (Image image) {
+	checkWidget ();
+	setImage (0, image);
+}
+
+/**
+ * Sets the image for multiple columns in the tree. 
+ * 
+ * @param images the array of new images
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the array of images is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if one of the images 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>
+ * 
+ * @since 3.1
+ */
+public void setImage (Image [] images) {
+	checkWidget ();
+	if (images == null) error (SWT.ERROR_NULL_ARGUMENT);
+	for (int i=0; i<images.length; i++) {
+		setImage (i, images [i]);
+	}
+}
+
+/**
+ * Sets the number of child items contained in the receiver.
+ *
+ * @param count the number of items
+ *
+ * @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 setItemCount (int count) {
+	checkWidget ();
+	count = Math.max (0, count);
+	parent.setItemCount (handle, count);
+}
+
+/**
+ * Sets the receiver's text at a column
+ *
+ * @param index the column index
+ * @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>
+ * 
+ * @since 3.1
+ */
+public void setText (int index, String string) {
+	checkWidget ();
+	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (_getText (index).equals (string)) return;
+	int count = Math.max (1, parent.getColumnCount ());
+	if (0 > index || index > count - 1) return;
+	byte[] buffer = Converter.wcsToMbcs (null, string, true);
+	int modelIndex = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex;
+	OS.gtk_tree_store_set (parent.modelHandle, handle, modelIndex + Tree.CELL_TEXT, buffer, -1);
+	/*
+	* Bug in GTK.  When using fixed-height-mode,
+	* row changes do not cause the row to be repainted.  The fix is to
+	* invalidate the row when the text changes.
+	*/
+	if ((parent.style & SWT.VIRTUAL) != 0) {
+		if (OS.GTK_VERSION >= OS.VERSION (2, 3, 2) && OS.GTK_VERSION < OS.VERSION (2, 6, 3)) {
+			redraw ();
+		}
+	}
+	cached = true;
+}
+
+public void setText (String string) {
+	checkWidget ();
+	setText (0, string);
+}
+
+/**
+ * Sets the text for multiple columns in the tree. 
+ * 
+ * @param strings the array of new strings
+ *
+ * @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>
+ * 
+ * @since 3.1
+ */
+public void setText (String [] strings) {
+	checkWidget ();
+	if (strings == null) error (SWT.ERROR_NULL_ARGUMENT);
+	for (int i=0; i<strings.length; i++) {
+		String string = strings [i];
+		if (string != null) setText (i, string);
+	}
+}
+}