1 /* 2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.glass.ui.monocle; 27 28 import java.security.AccessController; 29 import java.security.PrivilegedAction; 30 import java.util.Locale; 31 32 public abstract class NativePlatformFactory { 33 34 protected abstract boolean matches(); 35 36 protected abstract NativePlatform createNativePlatform(); 37 38 private static NativePlatform platform; 39 public static synchronized NativePlatform getNativePlatform() { 40 if (platform == null) { 41 String platformFactoryProperty = 42 AccessController.doPrivileged((PrivilegedAction<String>) () -> System.getProperty("monocle.platform", 43 "MX6,OMAP,Dispman,X11,Linux,Headless")); 44 String[] platformFactories = platformFactoryProperty.split(","); 45 for (int i = 0; i < platformFactories.length; i++) { 46 String factoryName = platformFactories[i].trim(); 47 String factoryClassName; 48 if (factoryName.contains(".")) { 49 factoryClassName = factoryName; 50 } else { 51 factoryClassName = "com.sun.glass.ui.monocle." 52 + factoryName.toLowerCase(Locale.ROOT) 53 + "." + factoryName + "PlatformFactory"; 54 } 55 if (MonocleSettings.settings.tracePlatformConfig) { 56 MonocleTrace.traceConfig("Trying platform %s with class %s", 57 factoryName, factoryClassName); 58 } 59 try { 60 NativePlatformFactory npf = (NativePlatformFactory) 61 Class.forName(factoryClassName) 62 .newInstance(); 63 if (npf.matches()) { 64 platform = npf.createNativePlatform(); 65 if (MonocleSettings.settings.tracePlatformConfig) { 66 MonocleTrace.traceConfig("Matched %s", factoryName); 67 } 68 return platform; 69 } 70 } catch (Exception e) { 71 if (MonocleSettings.settings.tracePlatformConfig) { 72 MonocleTrace.traceConfig("Failed to create platform %s", 73 factoryClassName); 74 } 75 e.printStackTrace(); 76 } 77 } 78 throw new UnsupportedOperationException( 79 "Cannot load a native platform from: '" 80 + platformFactoryProperty + "'"); 81 } 82 return platform; 83 } 84 85 }