--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Tray.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,149 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+module dwt.widgets.Tray;
+
+import dwt.dwthelper.utils;
+
+
+import dwt.DWT;
+import dwt.DWTException;
+
+/**
+ * Instances of this class represent the system tray that is part
+ * of the task bar status area on some operating systems.
+ * 
+ * <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 Display#getSystemTray
+ * 
+ * @since 3.0
+ */
+public class Tray extends Widget {
+    int itemCount;
+    TrayItem [] items = new TrayItem [4];
+
+Tray (Display display, int style) {
+    if (display is null) display = Display.getCurrent ();
+    if (display is null) display = Display.getDefault ();
+    if (!display.isValidThread ()) {
+        error (DWT.ERROR_THREAD_INVALID_ACCESS);
+    }
+    this.display = display;
+}
+    
+void createItem (TrayItem item, int index) {
+    if (!(0 <= index && index <= itemCount)) error (DWT.ERROR_INVALID_RANGE);
+    if (itemCount is items.length) {
+        TrayItem [] newItems = new TrayItem [items.length + 4];
+        System.arraycopy (items, 0, newItems, 0, items.length);
+        items = newItems;
+    }
+    System.arraycopy (items, index, items, index + 1, itemCount++ - index);
+    items [index] = item;
+}
+
+void destroyItem (TrayItem item) {
+    int index = 0;
+    while (index < itemCount) {
+        if (items [index] is item) break;
+        index++;
+    }
+    if (index is itemCount) return;
+    System.arraycopy (items, index + 1, items, index, --itemCount - index);
+    items [itemCount] = null;
+}
+
+/**
+ * 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 DWTException <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 TrayItem getItem (int index) {
+    checkWidget ();
+    if (!(0 <= index && index < itemCount)) error (DWT.ERROR_INVALID_RANGE);
+    return items [index];
+}
+
+/**
+ * Returns the number of items contained in the receiver.
+ *
+ * @return the number of items
+ *
+ * @exception DWTException <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 ();
+    return itemCount;
+}
+
+/**
+ * Returns an array of <code>TrayItem</code>s which are the items
+ * in 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 items in the receiver
+ *
+ * @exception DWTException <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 TrayItem [] getItems () {
+    checkWidget ();
+    TrayItem [] result = new TrayItem [itemCount];
+    System.arraycopy (items, 0, result, 0, result.length);
+    return result;
+}
+
+void releaseChildren (bool destroy) {
+    if (items !is null) {
+        for (int i=0; i<items.length; i++) {
+            TrayItem item = items [i];
+            if (item !is null && !item.isDisposed ()) {
+                item.release (false);
+            }
+        }
+        items = null;
+    }
+    super.releaseChildren (destroy);
+}
+
+void releaseParent () {
+    super.releaseParent ();
+    if (display.tray is this) display.tray = null;
+}
+
+}