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| 1 | /* | ||
| 2 | * Copyright (c) 2008, 2010, 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 sun.font; | ||
| 27 | |||
| 28 | import java.awt.AWTError; | ||
| 29 | import java.awt.Font; | ||
| 30 | import java.awt.GraphicsEnvironment; | ||
| 31 | import java.awt.Toolkit; | ||
| 32 | import java.security.AccessController; | ||
| 33 | import java.security.PrivilegedAction; | ||
| 34 | |||
| 35 | import sun.security.action.GetPropertyAction; | ||
| 36 | |||
| 37 | |||
| 38 | /** | ||
| 39 | * Factory class used to retrieve a valid FontManager instance for the current | ||
| 40 | * platform. | ||
| 41 | * | ||
| 42 | * A default implementation is given for Linux, Solaris and Windows. | ||
| 43 | * You can alter the behaviour of the {@link #getInstance()} method by setting | ||
| 44 | * the {@code sun.font.fontmanager} property. For example: | ||
| 45 | * {@code sun.font.fontmanager=sun.awt.X11FontManager} | ||
| 46 | */ | ||
| 47 | public final class FontManagerFactory { | ||
| 48 | |||
| 49 | /** Our singleton instance. */ | ||
| 50 | private static FontManager instance = null; | ||
| 51 | |||
| 52 | private static final String DEFAULT_CLASS; | ||
| 53 | static { | ||
| 54 | if (FontUtilities.isWindows) | ||
| 55 | DEFAULT_CLASS = "sun.awt.Win32FontManager"; | ||
| 56 | else | ||
| 57 | DEFAULT_CLASS = "sun.awt.X11FontManager"; | ||
| 58 | } | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Get a valid FontManager implementation for the current platform. | ||
| 62 | * | ||
| 63 | * @return a valid FontManager instance for the current platform | ||
| 64 | */ | ||
| 65 | public static synchronized FontManager getInstance() { | ||
| 66 | |||
| 67 | if (instance != null) { | ||
| 68 | return instance; | ||
| 69 | } | ||
| 70 | |||
| 71 | AccessController.doPrivileged(new PrivilegedAction() { | ||
| 72 | |||
| 73 | public Object run() { | ||
| 74 | try { | ||
| 75 | String fmClassName = | ||
| 76 | System.getProperty("sun.font.fontmanager", | ||
| 77 | DEFAULT_CLASS); | ||
| 78 | ClassLoader cl = ClassLoader.getSystemClassLoader(); | ||
| 79 | Class fmClass = Class.forName(fmClassName, true, cl); | ||
| 80 | instance = (FontManager) fmClass.newInstance(); | ||
| 81 | } catch (ClassNotFoundException ex) { | ||
| 82 | InternalError err = new InternalError(); | ||
| 83 | err.initCause(ex); | ||
| 84 | throw err; | ||
| 85 | |||
| 86 | } catch (InstantiationException ex) { | ||
| 87 | InternalError err = new InternalError(); | ||
| 88 | err.initCause(ex); | ||
| 89 | throw err; | ||
| 90 | |||
| 91 | } catch (IllegalAccessException ex) { | ||
| 92 | InternalError err = new InternalError(); | ||
| 93 | err.initCause(ex); | ||
| 94 | throw err; | ||
| 95 | } | ||
| 96 | return null; | ||
| 97 | } | ||
| 98 | }); | ||
| 99 | |||
| 100 | return instance; | ||
| 101 | } | ||
| 102 | } | ||