restore HEAD after accidental deletion by error in automated build script

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diff --git a/bundles/org.eclipse.swt/Eclipse SWT/emulated/tray/org/eclipse/swt/widgets/TrayItem.java b/bundles/org.eclipse.swt/Eclipse SWT/emulated/tray/org/eclipse/swt/widgets/TrayItem.java
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+++ b/bundles/org.eclipse.swt/Eclipse SWT/emulated/tray/org/eclipse/swt/widgets/TrayItem.java
@@ -0,0 +1,350 @@
+/*******************************************************************************
+ * 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.events.*;
+import org.eclipse.swt.graphics.*;
+
+/**
+ * Instances of this class represent icons that can be placed on the
+ * system tray or task bar status area.
+ * <p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>(none)</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>DefaultSelection, MenuDetect, Selection</dd>
+ * </dl>
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ *
+ * @see <a href="http://www.eclipse.org/swt/snippets/#tray">Tray, TrayItem snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ * 
+ * @since 3.0
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class TrayItem extends Item {
+	Tray parent;
+	ToolTip toolTip;
+	String toolTipText;
+	boolean visible = true;
+	
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>Tray</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
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public TrayItem (Tray parent, int style) {
+	super (parent, style);
+	this.parent = parent;
+	parent.createItem (this, parent.getItemCount ());
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the platform-specific context menu trigger
+ * has occurred, by sending it one of the messages defined in
+ * the <code>MenuDetectListener</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 MenuDetectListener
+ * @see #removeMenuDetectListener
+ *
+ * @since 3.3
+ */
+public void addMenuDetectListener (MenuDetectListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the receiver 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 receiver is selected
+ * <code>widgetDefaultSelected</code> is called when the receiver is double-clicked
+ * </p>
+ *
+ * @param listener the listener which should be notified when the receiver 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);
+}
+
+protected void checkSubclass () {
+	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+void destroyWidget () {
+	parent.destroyItem (this);
+	releaseHandle ();
+}
+
+Point getLocation () {
+	return display.getCursorLocation ();
+}
+
+/**
+ * Returns the receiver's parent, which must be a <code>Tray</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>
+ * 
+ * @since 3.2
+ */
+public Tray getParent () {
+	checkWidget ();
+	return parent;
+}
+
+/**
+ * Returns the receiver's tool tip, 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 ToolTip getToolTip () {
+	checkWidget ();
+	return toolTip;
+}
+
+/**
+ * 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>
+ */
+public String getToolTipText () {
+	checkWidget ();
+	return toolTipText;
+}
+
+/**
+ * Returns <code>true</code> if the receiver is visible and 
+ * <code>false</code> otherwise.
+ *
+ * @return the receiver's visibility
+ *
+ * @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 getVisible () {
+	checkWidget ();
+	return visible;
+}
+
+void releaseHandle () {
+	super.releaseHandle ();
+	parent = null;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the platform-specific context menu trigger has
+ * occurred.
+ *
+ * @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 MenuDetectListener
+ * @see #addMenuDetectListener
+ *
+ * @since 3.3
+ */
+public void removeMenuDetectListener (MenuDetectListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the receiver 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);
+}
+
+/**
+ * Sets the receiver's image.
+ *
+ * @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>
+ */
+public void setImage (Image image) {
+	checkWidget ();
+	if (image != null && image.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+	super.setImage (image);
+}
+
+/**
+ * Sets the receiver's tool tip to the argument, which
+ * may be null indicating that no tool tip should be shown.
+ *
+ * @param toolTip the new tool tip (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 setToolTip (ToolTip toolTip) {
+	checkWidget ();
+	ToolTip oldTip = this.toolTip, newTip = toolTip;
+	if (oldTip != null) oldTip.item = null;
+	this.toolTip = newTip;
+	if (newTip != null) newTip.item = this;
+}
+
+/**
+ * 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>
+ */
+public void setToolTipText (String string) {
+	checkWidget ();
+	toolTipText = string;
+}
+
+/**
+ * Makes the receiver visible if the argument is <code>true</code>,
+ * and makes it invisible otherwise. 
+ *
+ * @param visible the new visibility 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 setVisible (boolean visible) {
+	checkWidget ();
+	if (this.visible == visible) return;
+	if (visible) sendEvent (SWT.Show);
+	this.visible = visible;
+	if (!visible) sendEvent (SWT.Hide);
+}
+}