| /* |
| * Copyright (c) 1997, 2017, 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 javax.accessibility; |
| |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.Locale; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| |
| import sun.awt.AWTAccessor; |
| |
| /** |
| * Base class used to maintain a strongly typed enumeration. This is the |
| * superclass of {@link AccessibleState} and {@link AccessibleRole}. |
| * <p> |
| * The {@link #toDisplayString()} method allows you to obtain the localized |
| * string for a locale independent key from a predefined {@code ResourceBundle} |
| * for the keys defined in this class. This localized string is intended to be |
| * readable by humans. |
| * |
| * @author Willie Walker |
| * @author Peter Korn |
| * @author Lynn Monsanto |
| * @see AccessibleRole |
| * @see AccessibleState |
| */ |
| public abstract class AccessibleBundle { |
| |
| private static Hashtable<Locale, Hashtable<String, Object>> table = new Hashtable<>(); |
| |
| private final String defaultResourceBundleName |
| = "com.sun.accessibility.internal.resources.accessibility"; |
| |
| static { |
| AWTAccessor.setAccessibleBundleAccessor( |
| new AWTAccessor.AccessibleBundleAccessor() { |
| |
| @Override |
| public String getKey(AccessibleBundle accessibleBundle) { |
| return accessibleBundle.key; |
| } |
| }); |
| } |
| |
| /** |
| * Construct an {@code AccessibleBundle}. |
| */ |
| public AccessibleBundle() { |
| } |
| |
| /** |
| * The locale independent name of the state. This is a programmatic name |
| * that is not intended to be read by humans. |
| * |
| * @see #toDisplayString |
| */ |
| protected String key = null; |
| |
| /** |
| * Obtains the key as a localized string. If a localized string cannot be |
| * found for the key, the locale independent key stored in the role will be |
| * returned. This method is intended to be used only by subclasses so that |
| * they can specify their own resource bundles which contain localized |
| * strings for their keys. |
| * |
| * @param resourceBundleName the name of the resource bundle to use for |
| * lookup |
| * @param locale the locale for which to obtain a localized string |
| * @return a localized string for the key |
| */ |
| protected String toDisplayString(String resourceBundleName, |
| Locale locale) { |
| |
| // loads the resource bundle if necessary |
| loadResourceBundle(resourceBundleName, locale); |
| |
| // returns the localized string |
| Hashtable<String, Object> ht = table.get(locale); |
| if (ht != null) { |
| Object o = ht.get(key); |
| if (o != null && o instanceof String) { |
| return (String)o; |
| } |
| } |
| return key; |
| } |
| |
| /** |
| * Obtains the key as a localized string. If a localized string cannot be |
| * found for the key, the locale independent key stored in the role will be |
| * returned. |
| * |
| * @param locale the locale for which to obtain a localized string |
| * @return a localized string for the key |
| */ |
| public String toDisplayString(Locale locale) { |
| return toDisplayString(defaultResourceBundleName, locale); |
| } |
| |
| /** |
| * Gets localized string describing the key using the default locale. |
| * |
| * @return a localized string describing the key using the default locale |
| */ |
| public String toDisplayString() { |
| return toDisplayString(Locale.getDefault()); |
| } |
| |
| /** |
| * Gets localized string describing the key using the default locale. |
| * |
| * @return a localized string describing the key using the default locale |
| * @see #toDisplayString |
| */ |
| public String toString() { |
| return toDisplayString(); |
| } |
| |
| /** |
| * Loads the Accessibility resource bundle if necessary. |
| */ |
| private void loadResourceBundle(String resourceBundleName, |
| Locale locale) { |
| if (! table.contains(locale)) { |
| |
| try { |
| Hashtable<String, Object> resourceTable = new Hashtable<>(); |
| |
| ResourceBundle bundle = ResourceBundle.getBundle(resourceBundleName, locale); |
| |
| Enumeration<String> iter = bundle.getKeys(); |
| while(iter.hasMoreElements()) { |
| String key = iter.nextElement(); |
| resourceTable.put(key, bundle.getObject(key)); |
| } |
| |
| table.put(locale, resourceTable); |
| } |
| catch (MissingResourceException e) { |
| System.err.println("loadResourceBundle: " + e); |
| // Just return so toDisplayString() returns the |
| // non-localized key. |
| return; |
| } |
| } |
| } |
| } |