001: /*BEGIN_COPYRIGHT_BLOCK
002: *
003: * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
004: * All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions are met:
008: * * Redistributions of source code must retain the above copyright
009: * notice, this list of conditions and the following disclaimer.
010: * * Redistributions in binary form must reproduce the above copyright
011: * notice, this list of conditions and the following disclaimer in the
012: * documentation and/or other materials provided with the distribution.
013: * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
014: * names of its contributors may be used to endorse or promote products
015: * derived from this software without specific prior written permission.
016: *
017: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
018: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
019: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
020: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
021: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
022: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
023: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
024: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
025: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
026: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
027: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
028: *
029: * This software is Open Source Initiative approved Open Source Software.
030: * Open Source Initative Approved is a trademark of the Open Source Initiative.
031: *
032: * This file is part of DrJava. Download the current version of this project
033: * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/
034: *
035: * END_COPYRIGHT_BLOCK*/
036:
037: package edu.rice.cs.drjava.platform;
038:
039: import edu.rice.cs.drjava.DrJava;
040: import edu.rice.cs.drjava.config.Configuration;
041: import edu.rice.cs.drjava.config.FileOption;
042: import edu.rice.cs.drjava.config.OptionConstants;
043: import edu.rice.cs.util.ArgumentTokenizer;
044: import edu.rice.cs.util.StringOps;
045:
046: import javax.swing.*;
047: import java.io.File;
048: import java.lang.reflect.Method;
049: import java.net.URL;
050: import java.util.List;
051:
052: /** Default platform-neutral implementation of PlatformSupport. Most implementations
053: * will extend this class to inherit default behaviors.
054: * @version $Id: DefaultPlatform.java 4255 2007-08-28 19:17:37Z mgricken $
055: */
056: class DefaultPlatform implements PlatformSupport {
057: /** Singleton instance. */
058: public static DefaultPlatform ONLY = new DefaultPlatform();
059:
060: /** Private constructor for singleton pattern. */
061: protected DefaultPlatform() {
062: }
063:
064: /** Utility method to determine if the current Swing look and feel is the platform-specific look and feel for the
065: * client platform.
066: * @return true if current Swing look and feel is the system look and feel
067: */
068: public boolean isUsingSystemLAF() {
069: String sysLAF = UIManager.getSystemLookAndFeelClassName();
070: String curLAF = UIManager.getLookAndFeel().getClass().getName();
071: return (sysLAF.equals(curLAF));
072: }
073:
074: /** Hook for performing general UI setup. Called before all other UI setup is done. The default implementation
075: * does nothing.
076: */
077: public void beforeUISetup() {
078: }
079:
080: /** Hook for performing general UI setup. Called after all other UI setup is done. The default implementation
081: * does nothing.
082: *
083: * @param about the Action associated with openning the About dialog
084: * @param prefs the Action associated with openning the Preferences dialog
085: * @param quit the Action associated with quitting the DrJava application
086: */
087: public void afterUISetup(Action about, Action prefs, Action quit) {
088: }
089:
090: /** Returns whether this is a Mac OS X platform. */
091: public boolean isMacPlatform() {
092: return false;
093: }
094:
095: /** Returns whether this is a Windows platform. */
096: public boolean isWindowsPlatform() {
097: return false;
098: }
099:
100: /** Returns the current Java specification version. */
101: public String getJavaSpecVersion() {
102: return System.getProperty("java.specification.version");
103: }
104:
105: /** Returns true if the classpath's tools.jar is from version 1.3. */
106: public boolean has13ToolsJar() {
107: // Javadoc's Main class should not have an execute(String[]) method.
108: try {
109: Class<?> main = Class.forName("com.sun.tools.javadoc.Main");
110: return !_javadocMainHasExecuteMethod(main);
111: } catch (Throwable t) {
112: return false;
113: }
114: }
115:
116: /** Returns true if the classpath's tools.jar is from version 1.4. */
117: public boolean has14ToolsJar() {
118: // Javadoc's Main class should have an execute(String[]) method.
119: try {
120: Class<?> main = Class.forName("com.sun.tools.javadoc.Main");
121: return _javadocMainHasExecuteMethod(main);
122: } catch (Throwable t) {
123: return false;
124: }
125: }
126:
127: /** Returns true if the given class object for com.sun.tools.javadoc.Main
128: * has an execute(String[]) method. If so, that means we have a 1.4
129: * version of tools.jar.
130: *
131: * @param main Class object for com.sun.tools.javadoc.Main
132: */
133: @SuppressWarnings("unchecked")
134: private boolean _javadocMainHasExecuteMethod(Class main) {
135: try {
136: Class<String[]>[] arr = new Class[] { String[].class };
137: main.getMethod("execute", arr);
138: return true;
139: } catch (Throwable t) {
140: return false;
141: }
142: }
143:
144: /** Utility method for opening a URL in a browser in a platform-specific way.
145: * The default implementation uses Runtime.exec to execute a command specified
146: * in Preferences. Platform implementations should attempt the default method
147: * first, then try to use a "default browser", if such a thing exists on the
148: * specific platform.
149: *
150: * @param address the URL to open
151: * @return true if the URL was successfully handled, false otherwise
152: */
153: public boolean openURL(URL address) {
154: // Get the two config options.
155: Configuration config = DrJava.getConfig();
156: File exe = config.getSetting(OptionConstants.BROWSER_FILE);
157: String command = config
158: .getSetting(OptionConstants.BROWSER_STRING);
159:
160: // Check for empty settings.
161: if ((exe == FileOption.NULL_FILE) && (command.equals(""))) {
162: // If the user hasn't specified anything, don't try to run it.
163: return false;
164: } else {
165: String addr = address.toString();
166: if (command.equals("")) {
167: // If there is no command, simply use the URL.
168: command = addr;
169: } else {
170: // Otherwise, replace any <URL> tags in the command with the address.
171: String tag = "<URL>";
172: if (command.indexOf(tag) != -1) {
173: command = StringOps.replace(command, tag, addr);
174: } else {
175: // No <URL> specified, so tack it onto the end.
176: command = command + " " + addr;
177: }
178: }
179:
180: // Build a string array of command and arguments.
181: List<String> args = ArgumentTokenizer.tokenize(command);
182:
183: // Prepend the file only if it exists.
184: if (exe != FileOption.NULL_FILE)
185: args.add(0, exe.getAbsolutePath());
186:
187: // Call the command.
188: try {
189: // Process proc =
190: Runtime.getRuntime().exec(
191: args.toArray(new String[args.size()]));
192: } catch (Throwable t) {
193: // If there was any kind of problem, ignore it and report failure.
194: return false;
195: }
196: }
197:
198: // Otherwise, trust that it worked.
199: return true;
200: }
201: }
|