/******************************************************************************* * Copyright (c) 2000, 2009 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.widgets; import org.eclipse.swt.*; /** * Instances of this class represent the system tray that is part * of the task bar status area on some operating systems. * *
* IMPORTANT: This class is not intended to be subclassed. *
* * @see Display#getSystemTray * @see Tray, TrayItem snippets * @see Sample code and further information * * @since 3.0 * @noextend This class is not intended to be subclassed by clients. */ public class Tray extends Widget { int itemCount; TrayItem [] items = new TrayItem [4]; Tray (Display display, int style) { this.display = display; reskinWidget (); } void createItem (TrayItem item, int index) { if (!(0 <= index && index <= itemCount)) error (SWT.ERROR_INVALID_RANGE); if (itemCount == 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] == item) break; index++; } if (index == 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 IllegalArgumentExceptionTrayItem
s which are the items
* in the receiver.
* * 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. *
* * @return the items in the receiver * * @exception SWTException