| /* |
| * Copyright (c) 2004, 2013, 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 sun.tools.jconsole; |
| |
| import java.awt.event.KeyEvent; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Modifier; |
| import java.text.MessageFormat; |
| import java.util.Collections; |
| import java.util.IdentityHashMap; |
| import java.util.Map; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| |
| /** |
| * Toolkit that provides resource support for JConsole. |
| */ |
| public final class Resources { |
| private static Map<String, Integer> MNEMONIC_LOOKUP = Collections |
| .synchronizedMap(new IdentityHashMap<String, Integer>()); |
| |
| private Resources() { |
| throw new AssertionError(); |
| } |
| |
| /** |
| * Convenience method for {@link MessageFormat#format(String, Object...)}. |
| * |
| * @param pattern the pattern |
| * @param objects the arguments for the pattern |
| * |
| * @return a formatted string |
| */ |
| public static String format(String pattern, Object... arguments) { |
| return MessageFormat.format(pattern, arguments); |
| } |
| |
| /** |
| * Returns the mnemonic for a message. |
| * |
| * @param message the message |
| * |
| * @return the mnemonic <code>int</code> |
| */ |
| public static int getMnemonicInt(String message) { |
| Integer integer = MNEMONIC_LOOKUP.get(message); |
| if (integer != null) { |
| return integer.intValue(); |
| } |
| return 0; |
| } |
| |
| /** |
| * Initializes all non-final public static fields in the given class with |
| * messages from a {@link ResourceBundle}. |
| * |
| * @param clazz the class containing the fields |
| */ |
| public static void initializeMessages(Class<?> clazz, String rbName) { |
| ResourceBundle rb = null; |
| try { |
| rb = ResourceBundle.getBundle(rbName); |
| } catch (MissingResourceException mre) { |
| // fall through, handled later |
| } |
| for (Field field : clazz.getFields()) { |
| if (isWritableField(field)) { |
| String key = field.getName(); |
| String message = getMessage(rb, key); |
| int mnemonicInt = findMnemonicInt(message); |
| message = removeMnemonicAmpersand(message); |
| message = replaceWithPlatformLineFeed(message); |
| setFieldValue(field, message); |
| MNEMONIC_LOOKUP.put(message, mnemonicInt); |
| } |
| } |
| } |
| |
| private static boolean isWritableField(Field field) { |
| int modifiers = field.getModifiers(); |
| return Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers) |
| && !Modifier.isFinal(modifiers); |
| } |
| |
| /** |
| * Returns the message corresponding to the key in the bundle or a text |
| * describing it's missing. |
| * |
| * @param rb the resource bundle |
| * @param key the key |
| * |
| * @return the message |
| */ |
| private static String getMessage(ResourceBundle rb, String key) { |
| if (rb == null) { |
| return "missing resource bundle"; |
| } |
| try { |
| return rb.getString(key); |
| } catch (MissingResourceException mre) { |
| return "missing message for key = \"" + key |
| + "\" in resource bundle "; |
| } |
| } |
| |
| private static void setFieldValue(Field field, String value) { |
| try { |
| field.set(null, value); |
| } catch (IllegalArgumentException | IllegalAccessException e) { |
| throw new Error("Unable to access or set message for field " + field.getName()); |
| } |
| } |
| |
| /** |
| * Returns a {@link String} where all <code>\n</code> in the <text> have |
| * been replaced with the line separator for the platform. |
| * |
| * @param text the to be replaced |
| * |
| * @return the replaced text |
| */ |
| private static String replaceWithPlatformLineFeed(String text) { |
| return text.replace("\n", System.getProperty("line.separator")); |
| } |
| |
| /** |
| * Removes the mnemonic identifier (<code>&</code>) from a string unless |
| * it's escaped by <code>&&</code> or placed at the end. |
| * |
| * @param message the message |
| * |
| * @return a message with the mnemonic identifier removed |
| */ |
| private static String removeMnemonicAmpersand(String message) { |
| StringBuilder s = new StringBuilder(); |
| for (int i = 0; i < message.length(); i++) { |
| char current = message.charAt(i); |
| if (current != '&' || i == message.length() - 1 |
| || message.charAt(i + 1) == '&') { |
| s.append(current); |
| } |
| } |
| return s.toString(); |
| } |
| |
| /** |
| * Finds the mnemonic character in a message. |
| * |
| * The mnemonic character is the first character followed by the first |
| * <code>&</code> that is not followed by another <code>&</code>. |
| * |
| * @return the mnemonic as an <code>int</code>, or <code>0</code> if it |
| * can't be found. |
| */ |
| private static int findMnemonicInt(String s) { |
| for (int i = 0; i < s.length() - 1; i++) { |
| if (s.charAt(i) == '&') { |
| if (s.charAt(i + 1) != '&') { |
| return lookupMnemonicInt(s.substring(i + 1, i + 2)); |
| } else { |
| i++; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * Lookups the mnemonic for a key in the {@link KeyEvent} class. |
| * |
| * @param c the character to lookup |
| * |
| * @return the mnemonic as an <code>int</code>, or <code>0</code> if it |
| * can't be found. |
| */ |
| private static int lookupMnemonicInt(String c) { |
| try { |
| return KeyEvent.class.getDeclaredField("VK_" + c.toUpperCase()) |
| .getInt(null); |
| } catch (IllegalArgumentException | IllegalAccessException |
| | NoSuchFieldException | SecurityException e) { |
| // Missing VK is okay |
| return 0; |
| } |
| } |
| } |