com.codename1.impl.ImplementationFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2008, 2010, 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.codename1.impl;
import com.codename1.impl.javase.JavaCEFSEPortWithSVGSupport;
import com.codename1.impl.javase.JavaFXSEPortWithSVGSupport;
import com.codename1.impl.javase.JavaJMFSEPort;
import com.codename1.impl.javase.JavaSEPortWithSVGSupport;
import com.codename1.impl.javase.cef.JavaCEFSEPort;
import com.codename1.impl.javase.fx.JavaFXSEPort;
/**
* Generic class allowing 3rd parties to replace the underlying implementation in
* Codename One 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 Object createImplementation() {
boolean cefSupported = false;
boolean fxSupported = false;
try {
Class.forName("javafx.embed.swing.JFXPanel");
fxSupported = true;
} catch (Throwable ex) {}
try {
Class.forName("org.cef.CefApp");
cefSupported = true;
} catch (Throwable ex){}
String implementation = System.getProperty("cn1.javase.implementation", "");
if (implementation.equalsIgnoreCase("cef") && cefSupported) {
// We will use CEF
return new JavaCEFSEPortWithSVGSupport();
}
if (implementation.equalsIgnoreCase("fx") && fxSupported) {
return new JavaFXSEPortWithSVGSupport();
}
if (implementation.equalsIgnoreCase("jmf")) {
return new JavaSEPortWithSVGSupport();
}
if ("".equals(implementation)) {
if (cefSupported) {
return new JavaCEFSEPortWithSVGSupport();
} else if (fxSupported) {
return new JavaFXSEPortWithSVGSupport();
} else {
return new JavaSEPortWithSVGSupport();
}
}
return new JavaSEPortWithSVGSupport();
}
}