ImplementationFactory.java
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上传日期:2022-06-15
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- /*
- * Copyright 2008 Sun Microsystems, Inc. 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. Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- */
- package com.sun.lwuit.impl;
- import com.sun.lwuit.impl.midp.GameCanvasImplementation;
- /**
- * Generic class allowing 3rd parties to replace the underlying implementation in
- * LWUIT seamlessly. The factory can be replaced by 3rd parties to install a new
- * underlying implementation using elaborate logic.
- *
- * @author Shai Almog
- */
- public class ImplementationFactory {
- private static ImplementationFactory instance = new ImplementationFactory();
-
- /**
- * Allows third parties to replace the implementation factory
- */
- protected ImplementationFactory() {
- }
-
- /**
- * Returns the singleton instance of this class
- *
- * @return instanceof Implementation factory
- */
- public static ImplementationFactory getInstance() {
- return instance;
- }
-
- /**
- * Install a new implementation factory this method is invoked by implementors
- * to replace a factory.
- *
- * @param i implementation factory instance
- */
- public static void setInstance(ImplementationFactory i) {
- instance = i;
- }
-
- /**
- * Factory method to create the implementation instance
- *
- * @return a newly created implementation instance
- */
- public LWUITImplementation createImplementation() {
- return new GameCanvasImplementation();
- }
- }