| /* |
| * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.java.browser.dom; |
| |
| public abstract class DOMService |
| { |
| /** |
| * Returns new instance of a DOMService. The implementation |
| * of the DOMService returns depends on the setting of the |
| * com.sun.java.browser.dom.DOMServiceProvider property or, |
| * if the property is not set, a platform specific default. |
| * |
| * Throws DOMUnsupportedException if the DOMService is not |
| * available to the obj. |
| * |
| * @param obj Object to leverage the DOMService |
| */ |
| public static DOMService getService(Object obj) |
| throws DOMUnsupportedException |
| { |
| try |
| { |
| String provider = (String) java.security.AccessController.doPrivileged( |
| new sun.security.action.GetPropertyAction("com.sun.java.browser.dom.DOMServiceProvider")); |
| |
| Class clazz = DOMService.class.forName("sun.plugin.dom.DOMService"); |
| |
| return (DOMService) clazz.newInstance(); |
| } |
| catch (Throwable e) |
| { |
| throw new DOMUnsupportedException(e.toString()); |
| } |
| } |
| |
| /** |
| * An empty constructor is provided. Implementations of this |
| * abstract class must provide a public no-argument constructor |
| * in order for the static getService() method to work correctly. |
| * Application programmers should not be able to directly |
| * construct implementation subclasses of this abstract subclass. |
| */ |
| public DOMService() |
| { |
| } |
| |
| /** |
| * Causes action.run() to be executed synchronously on the |
| * DOM action dispatching thread. This call will block until all |
| * pending DOM actions have been processed and (then) |
| * action.run() returns. This method should be used when an |
| * application thread needs to access the browser's DOM. |
| * It should not be called from the DOMActionDispatchThread. |
| * |
| * Note that if the DOMAction.run() method throws an uncaught |
| * exception (on the DOM action dispatching thread), it's caught |
| * and re-thrown, as an DOMAccessException, on the caller's thread. |
| * |
| * If the DOMAction.run() method throws any DOM security related |
| * exception (on the DOM action dispatching thread), it's caught |
| * and re-thrown, as an DOMSecurityException, on the caller's thread. |
| * |
| * @param action DOMAction. |
| */ |
| public abstract Object invokeAndWait(DOMAction action) throws DOMAccessException; |
| |
| /** |
| * Causes action.run() to be executed asynchronously on the |
| * DOM action dispatching thread. This method should be used |
| * when an application thread needs to access the browser's |
| * DOM. It should not be called from the DOMActionDispatchThread. |
| * |
| * Note that if the DOMAction.run() method throws an uncaught |
| * exception (on the DOM action dispatching thread), it will not be |
| * caught and re-thrown on the caller's thread. |
| * |
| * @param action DOMAction. |
| */ |
| public abstract void invokeLater(DOMAction action); |
| } |