Showing the changes to java/pkg/sun/awt/im/InputMethodLocator.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 1999, 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.awt.im; | |
| 27 | + | |
| 28 | +import java.awt.AWTException; | |
| 29 | +import java.awt.im.spi.InputMethodDescriptor; | |
| 30 | +import java.util.Locale; | |
| 31 | + | |
| 32 | +/** | |
| 33 | + * Provides complete information to make and handle the selection | |
| 34 | + * of an input method and a locale. Immutable class. | |
| 35 | + */ | |
| 36 | +final class InputMethodLocator { | |
| 37 | + | |
| 38 | + private InputMethodDescriptor descriptor; | |
| 39 | + | |
| 40 | + // Currently `loader' is always the class loader for a | |
| 41 | + // descriptor. `loader' is provided for future extensions to be | |
| 42 | + // able to load input methods from somewhere else, and to support | |
| 43 | + // per input method name space. | |
| 44 | + private ClassLoader loader; | |
| 45 | + | |
| 46 | + private Locale locale; | |
| 47 | + | |
| 48 | + InputMethodLocator(InputMethodDescriptor descriptor, ClassLoader loader, Locale locale) { | |
| 49 | + if (descriptor == null) { | |
| 50 | + throw new NullPointerException("descriptor can't be null"); | |
| 51 | + } | |
| 52 | + this.descriptor = descriptor; | |
| 53 | + this.loader = loader; | |
| 54 | + this.locale = locale; | |
| 55 | + } | |
| 56 | + | |
| 57 | + public boolean equals(Object other) { | |
| 58 | + if (other == this) { | |
| 59 | + return true; | |
| 60 | + } | |
| 61 | + if (other == null || this.getClass() != other.getClass()) { | |
| 62 | + return false; | |
| 63 | + } | |
| 64 | + | |
| 65 | + InputMethodLocator otherLocator = (InputMethodLocator) other; | |
| 66 | + if (!descriptor.getClass().equals(otherLocator.descriptor.getClass())) { | |
| 67 | + return false; | |
| 68 | + } | |
| 69 | + if (loader == null && otherLocator.loader != null | |
| 70 | + || loader != null && !loader.equals(otherLocator.loader)) { | |
| 71 | + return false; | |
| 72 | + } | |
| 73 | + if (locale == null && otherLocator.locale != null | |
| 74 | + || locale != null && !locale.equals(otherLocator.locale)) { | |
| 75 | + return false; | |
| 76 | + } | |
| 77 | + return true; | |
| 78 | + } | |
| 79 | + | |
| 80 | + public int hashCode() { | |
| 81 | + int result = descriptor.hashCode(); | |
| 82 | + if (loader != null) { | |
| 83 | + result |= loader.hashCode() << 10; | |
| 84 | + } | |
| 85 | + if (locale != null) { | |
| 86 | + result |= locale.hashCode() << 20; | |
| 87 | + } | |
| 88 | + return result; | |
| 89 | + } | |
| 90 | + | |
| 91 | + InputMethodDescriptor getDescriptor() { | |
| 92 | + return descriptor; | |
| 93 | + } | |
| 94 | + | |
| 95 | + ClassLoader getClassLoader() { | |
| 96 | + return loader; | |
| 97 | + } | |
| 98 | + | |
| 99 | + Locale getLocale() { | |
| 100 | + return locale; | |
| 101 | + } | |
| 102 | + | |
| 103 | + /** | |
| 104 | + * Returns whether support for locale is available from | |
| 105 | + * the input method. | |
| 106 | + */ | |
| 107 | + boolean isLocaleAvailable(Locale locale) { | |
| 108 | + try { | |
| 109 | + Locale[] locales = descriptor.getAvailableLocales(); | |
| 110 | + for (int i = 0; i < locales.length; i++) { | |
| 111 | + if (locales[i].equals(locale)) { | |
| 112 | + return true; | |
| 113 | + } | |
| 114 | + } | |
| 115 | + } catch (AWTException e) { | |
| 116 | + // treat this as no locale available | |
| 117 | + } | |
| 118 | + return false; | |
| 119 | + } | |
| 120 | + | |
| 121 | + /** | |
| 122 | + * Returns an input method locator that has locale forLocale, | |
| 123 | + * but otherwise the same data as this locator. Does not | |
| 124 | + * check whether the input method actually supports forLocale - | |
| 125 | + * use {@link #isLocaleAvailable} for that. | |
| 126 | + */ | |
| 127 | + InputMethodLocator deriveLocator(Locale forLocale) { | |
| 128 | + if (forLocale == locale) { | |
| 129 | + return this; | |
| 130 | + } else { | |
| 131 | + return new InputMethodLocator(descriptor, loader, forLocale); | |
| 132 | + } | |
| 133 | + } | |
| 134 | + | |
| 135 | + /** | |
| 136 | + * Returns whether this and other describe the same input method | |
| 137 | + * engine, ignoring the locale setting. | |
| 138 | + */ | |
| 139 | + boolean sameInputMethod(InputMethodLocator other) { | |
| 140 | + if (other == this) { | |
| 141 | + return true; | |
| 142 | + } | |
| 143 | + if (other == null) { | |
| 144 | + return false; | |
| 145 | + } | |
| 146 | + | |
| 147 | + if (!descriptor.getClass().equals(other.descriptor.getClass())) { | |
| 148 | + return false; | |
| 149 | + } | |
| 150 | + if (loader == null && other.loader != null | |
| 151 | + || loader != null && !loader.equals(other.loader)) { | |
| 152 | + return false; | |
| 153 | + } | |
| 154 | + return true; | |
| 155 | + } | |
| 156 | + | |
| 157 | + /** | |
| 158 | + * Returns a string that can be used as an action command string. | |
| 159 | + * The first part of the string identifies the input method; it does | |
| 160 | + * not include '\n'. If getLocale is not null, getLocale().toString() | |
| 161 | + * is appended, separated by '\n'. | |
| 162 | + */ | |
| 163 | + String getActionCommandString() { | |
| 164 | + String inputMethodString = descriptor.getClass().getName(); | |
| 165 | + if (locale == null) { | |
| 166 | + return inputMethodString; | |
| 167 | + } else { | |
| 168 | + return inputMethodString + "\n" + locale.toString(); | |
| 169 | + } | |
| 170 | + } | |
| 171 | +} | |