-/*
-* Jalview - A Sequence Alignment Editor and Viewer
-* Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version 2
-* of the License, or (at your option) any later version.
-*
-* This program 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 for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
-*/
-
-package jalview.util;
-
-import java.io.File;
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
-/**
- * BrowserLauncher is a class that provides one static method, openURL, which opens the default
- * web browser for the current user of the system to the given URL. It may support other
- * protocols depending on the system -- mailto, ftp, etc. -- but that has not been rigorously
- * tested and is not guaranteed to work.
- * <p>
- * Yes, this is platform-specific code, and yes, it may rely on classes on certain platforms
- * that are not part of the standard JDK. What we're trying to do, though, is to take something
- * that's frequently desirable but inherently platform-specific -- opening a default browser --
- * and allow programmers (you, for example) to do so without worrying about dropping into native
- * code or doing anything else similarly evil.
- * <p>
- * Anyway, this code is completely in Java and will run on all JDK 1.1-compliant systems without
- * modification or a need for additional libraries. All classes that are required on certain
- * platforms to allow this to run are dynamically loaded at runtime via reflection and, if not
- * found, will not cause this to do anything other than returning an error when opening the
- * browser.
- * <p>
- * There are certain system requirements for this class, as it's running through Runtime.exec(),
- * which is Java's way of making a native system call. Currently, this requires that a Macintosh
- * have a Finder which supports the GURL event, which is true for Mac OS 8.0 and 8.1 systems that
- * have the Internet Scripting AppleScript dictionary installed in the Scripting Additions folder
- * in the Extensions folder (which is installed by default as far as I know under Mac OS 8.0 and
- * 8.1), and for all Mac OS 8.5 and later systems. On Windows, it only runs under Win32 systems
- * (Windows 95, 98, and NT 4.0, as well as later versions of all). On other systems, this drops
- * back from the inherently platform-sensitive concept of a default browser and simply attempts
- * to launch Netscape via a shell command.
- * <p>
- * This code is Copyright 1999-2001 by Eric Albert (ejalbert\@cs.stanford.edu) and may be
- * redistributed or modified in any form without restrictions as long as the portion of this
- * comment from this paragraph through the end of the comment is not removed. The author
- * requests that he be notified of any application, applet, or other binary that makes use of
- * this code, but that's more out of curiosity than anything and is not required. This software
- * includes no warranty. The author is not repsonsible for any loss of data or functionality
- * or any adverse or unexpected effects of using this software.
- * <p>
- * Credits:
- * <br>Steven Spencer, JavaWorld magazine (<a href="http://www.javaworld.com/javaworld/javatips/jw-javatip66.html">Java Tip 66</a>)
- * <br>Thanks also to Ron B. Yeh, Eric Shapiro, Ben Engber, Paul Teitlebaum, Andrea Cantatore,
- * Larry Barowski, Trevor Bedzek, Frank Miedrich, and Ron Rabakukk
- *
- * @author Eric Albert (<a href="mailto:ejalbert@cs.stanford.edu">ejalbert@cs.stanford.edu</a>)
- * @version 1.4b1 (Released June 20, 2001)
- */
-public class BrowserLauncher {
-
- /**
- * The Java virtual machine that we are running on. Actually, in most cases we only care
- * about the operating system, but some operating systems require us to switch on the VM. */
- private static int jvm;
-
- /** The browser for the system */
- private static Object browser;
-
- /**
- * Caches whether any classes, methods, and fields that are not part of the JDK and need to
- * be dynamically loaded at runtime loaded successfully.
- * <p>
- * Note that if this is <code>false</code>, <code>openURL()</code> will always return an
- * IOException.
- */
- private static boolean loadedWithoutErrors;
-
- /** The com.apple.mrj.MRJFileUtils class */
- private static Class mrjFileUtilsClass;
-
- /** The com.apple.mrj.MRJOSType class */
- private static Class mrjOSTypeClass;
-
- /** The com.apple.MacOS.AEDesc class */
- private static Class aeDescClass;
-
- /** The <init>(int) method of com.apple.MacOS.AETarget */
- private static Constructor aeTargetConstructor;
-
- /** The <init>(int, int, int) method of com.apple.MacOS.AppleEvent */
- private static Constructor appleEventConstructor;
-
- /** The <init>(String) method of com.apple.MacOS.AEDesc */
- private static Constructor aeDescConstructor;
-
- /** The findFolder method of com.apple.mrj.MRJFileUtils */
- private static Method findFolder;
-
- /** The getFileCreator method of com.apple.mrj.MRJFileUtils */
- private static Method getFileCreator;
-
- /** The getFileType method of com.apple.mrj.MRJFileUtils */
- private static Method getFileType;
-
- /** The openURL method of com.apple.mrj.MRJFileUtils */
- private static Method openURL;
-
- /** The makeOSType method of com.apple.MacOS.OSUtils */
- private static Method makeOSType;
-
- /** The putParameter method of com.apple.MacOS.AppleEvent */
- private static Method putParameter;
-
- /** The sendNoReply method of com.apple.MacOS.AppleEvent */
- private static Method sendNoReply;
-
- /** Actually an MRJOSType pointing to the System Folder on a Macintosh */
- private static Object kSystemFolderType;
-
- /** The keyDirectObject AppleEvent parameter type */
- private static Integer keyDirectObject;
-
- /** The kAutoGenerateReturnID AppleEvent code */
- private static Integer kAutoGenerateReturnID;
-
- /** The kAnyTransactionID AppleEvent code */
- private static Integer kAnyTransactionID;
-
- /** The linkage object required for JDirect 3 on Mac OS X. */
- private static Object linkage;
-
- /** The framework to reference on Mac OS X */
- private static final String JDirect_MacOSX = "/System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/HIToolbox";
-
- /** JVM constant for MRJ 2.0 */
- private static final int MRJ_2_0 = 0;
-
- /** JVM constant for MRJ 2.1 or later */
- private static final int MRJ_2_1 = 1;
-
- /** JVM constant for Java on Mac OS X 10.0 (MRJ 3.0) */
- private static final int MRJ_3_0 = 3;
-
- /** JVM constant for MRJ 3.1 */
- private static final int MRJ_3_1 = 4;
-
- /** JVM constant for any Windows NT JVM */
- private static final int WINDOWS_NT = 5;
-
- /** JVM constant for any Windows 9x JVM */
- private static final int WINDOWS_9x = 6;
-
- /** JVM constant for any other platform */
- private static final int OTHER = -1;
-
- /**
- * The file type of the Finder on a Macintosh. Hardcoding "Finder" would keep non-U.S. English
- * systems from working properly.
- */
- private static final String FINDER_TYPE = "FNDR";
-
- /**
- * The creator code of the Finder on a Macintosh, which is needed to send AppleEvents to the
- * application.
- */
- private static final String FINDER_CREATOR = "MACS";
-
- /** The name for the AppleEvent type corresponding to a GetURL event. */
- private static final String GURL_EVENT = "GURL";
-
- /**
- * The first parameter that needs to be passed into Runtime.exec() to open the default web
- * browser on Windows.
- */
- private static final String FIRST_WINDOWS_PARAMETER = "/c";
-
- /** The second parameter for Runtime.exec() on Windows. */
- private static final String SECOND_WINDOWS_PARAMETER = "start";
-
- /**
- * The third parameter for Runtime.exec() on Windows. This is a "title"
- * parameter that the command line expects. Setting this parameter allows
- * URLs containing spaces to work.
- */
- private static final String THIRD_WINDOWS_PARAMETER = "\"\"";
-
- /**
- * The shell parameters for Netscape that opens a given URL in an already-open copy of Netscape
- * on many command-line systems.
- */
- private static final String NETSCAPE_REMOTE_PARAMETER = "-remote";
- private static final String NETSCAPE_OPEN_PARAMETER_START = "openURL(";
- private static final String NETSCAPE_OPEN_NEW_WINDOW = ", new-window";
- private static final String NETSCAPE_OPEN_PARAMETER_END = ")";
-
- /**
- * The message from any exception thrown throughout the initialization process.
- */
- private static String errorMessage;
-
- /**
- * An initialization block that determines the operating system and loads the necessary
- * runtime data.
- */
- static {
- loadedWithoutErrors = true;
- String osName = System.getProperty("os.name");
- if (osName.startsWith("Mac OS")) {
- String mrjVersion = System.getProperty("mrj.version");
- String majorMRJVersion = mrjVersion.substring(0, 3);
- try {
- double version = Double.valueOf(majorMRJVersion).doubleValue();
- if (version == 2) {
- jvm = MRJ_2_0;
- } else if (version >= 2.1 && version < 3) {
- // Assume that all 2.x versions of MRJ work the same. MRJ 2.1 actually
- // works via Runtime.exec() and 2.2 supports that but has an openURL() method
- // as well that we currently ignore.
- jvm = MRJ_2_1;
- } else if (version == 3.0) {
- jvm = MRJ_3_0;
- } else if (version >= 3.1) {
- // Assume that all 3.1 and later versions of MRJ work the same.
- jvm = MRJ_3_1;
- } else {
- loadedWithoutErrors = false;
- errorMessage = "Unsupported MRJ version: " + version;
- }
- } catch (NumberFormatException nfe) {
- loadedWithoutErrors = false;
- errorMessage = "Invalid MRJ version: " + mrjVersion;
- }
- } else if (osName.startsWith("Windows")) {
- if (osName.indexOf("9") != -1) {
- jvm = WINDOWS_9x;
- } else {
- jvm = WINDOWS_NT;
- }
- } else {
- jvm = OTHER;
- }
-
- if (loadedWithoutErrors) { // if we haven't hit any errors yet
- loadedWithoutErrors = loadClasses();
- }
- }
-
- /**
- * This class should be never be instantiated; this just ensures so.
- */
- private BrowserLauncher() { }
-
- /**
- * Called by a static initializer to load any classes, fields, and methods required at runtime
- * to locate the user's web browser.
- * @return <code>true</code> if all intialization succeeded
- * <code>false</code> if any portion of the initialization failed
- */
- private static boolean loadClasses() {
- switch (jvm) {
- case MRJ_2_0:
- try {
- Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");
- Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");
- Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent");
- Class aeClass = Class.forName("com.apple.MacOS.ae");
- aeDescClass = Class.forName("com.apple.MacOS.AEDesc");
-
- aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class [] { int.class });
- appleEventConstructor = appleEventClass.getDeclaredConstructor(new Class[] { int.class, int.class, aeTargetClass, int.class, int.class });
- aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[] { String.class });
-
- makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class [] { String.class });
- putParameter = appleEventClass.getDeclaredMethod("putParameter", new Class[] { int.class, aeDescClass });
- sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[] { });
-
- Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject");
- keyDirectObject = (Integer) keyDirectObjectField.get(null);
- Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID");
- kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);
- Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID");
- kAnyTransactionID = (Integer) anyTransactionIDField.get(null);
- } catch (ClassNotFoundException cnfe) {
- errorMessage = cnfe.getMessage();
- return false;
- } catch (NoSuchMethodException nsme) {
- errorMessage = nsme.getMessage();
- return false;
- } catch (NoSuchFieldException nsfe) {
- errorMessage = nsfe.getMessage();
- return false;
- } catch (IllegalAccessException iae) {
- errorMessage = iae.getMessage();
- return false;
- }
- break;
- case MRJ_2_1:
- try {
- mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
- mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");
- Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType");
- kSystemFolderType = systemFolderField.get(null);
- findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[] { mrjOSTypeClass });
- getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", new Class[] { File.class });
- getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[] { File.class });
- } catch (ClassNotFoundException cnfe) {
- errorMessage = cnfe.getMessage();
- return false;
- } catch (NoSuchFieldException nsfe) {
- errorMessage = nsfe.getMessage();
- return false;
- } catch (NoSuchMethodException nsme) {
- errorMessage = nsme.getMessage();
- return false;
- } catch (SecurityException se) {
- errorMessage = se.getMessage();
- return false;
- } catch (IllegalAccessException iae) {
- errorMessage = iae.getMessage();
- return false;
- }
- break;
- case MRJ_3_0:
- try {
- Class linker = Class.forName("com.apple.mrj.jdirect.Linker");
- Constructor constructor = linker.getConstructor(new Class[]{ Class.class });
- linkage = constructor.newInstance(new Object[] { BrowserLauncher.class });
- } catch (ClassNotFoundException cnfe) {
- errorMessage = cnfe.getMessage();
- return false;
- } catch (NoSuchMethodException nsme) {
- errorMessage = nsme.getMessage();
- return false;
- } catch (InvocationTargetException ite) {
- errorMessage = ite.getMessage();
- return false;
- } catch (InstantiationException ie) {
- errorMessage = ie.getMessage();
- return false;
- } catch (IllegalAccessException iae) {
- errorMessage = iae.getMessage();
- return false;
- }
- break;
- case MRJ_3_1:
- try {
- mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
- openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", new Class[] { String.class });
- } catch (ClassNotFoundException cnfe) {
- errorMessage = cnfe.getMessage();
- return false;
- } catch (NoSuchMethodException nsme) {
- errorMessage = nsme.getMessage();
- return false;
- }
- break;
- default:
- break;
- }
- return true;
- }
-
- /**
- * Attempts to locate the default web browser on the local system. Caches results so it
- * only locates the browser once for each use of this class per JVM instance.
- * @return The browser for the system. Note that this may not be what you would consider
- * to be a standard web browser; instead, it's the application that gets called to
- * open the default web browser. In some cases, this will be a non-String object
- * that provides the means of calling the default browser.
- */
- private static Object locateBrowser() {
- if (browser != null) {
- return browser;
- }
- switch (jvm) {
- case MRJ_2_0:
- try {
- Integer finderCreatorCode = (Integer) makeOSType.invoke(null, new Object[] { FINDER_CREATOR });
- Object aeTarget = aeTargetConstructor.newInstance(new Object[] { finderCreatorCode });
- Integer gurlType = (Integer) makeOSType.invoke(null, new Object[] { GURL_EVENT });
- Object appleEvent = appleEventConstructor.newInstance(new Object[] { gurlType, gurlType, aeTarget, kAutoGenerateReturnID, kAnyTransactionID });
- // Don't set browser = appleEvent because then the next time we call
- // locateBrowser(), we'll get the same AppleEvent, to which we'll already have
- // added the relevant parameter. Instead, regenerate the AppleEvent every time.
- // There's probably a way to do this better; if any has any ideas, please let
- // me know.
- return appleEvent;
- } catch (IllegalAccessException iae) {
- browser = null;
- errorMessage = iae.getMessage();
- return browser;
- } catch (InstantiationException ie) {
- browser = null;
- errorMessage = ie.getMessage();
- return browser;
- } catch (InvocationTargetException ite) {
- browser = null;
- errorMessage = ite.getMessage();
- return browser;
- }
- case MRJ_2_1:
- File systemFolder;
- try {
- systemFolder = (File) findFolder.invoke(null, new Object[] { kSystemFolderType });
- } catch (IllegalArgumentException iare) {
- browser = null;
- errorMessage = iare.getMessage();
- return browser;
- } catch (IllegalAccessException iae) {
- browser = null;
- errorMessage = iae.getMessage();
- return browser;
- } catch (InvocationTargetException ite) {
- browser = null;
- errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage();
- return browser;
- }
- String[] systemFolderFiles = systemFolder.list();
- // Avoid a FilenameFilter because that can't be stopped mid-list
- for(int i = 0; i < systemFolderFiles.length; i++) {
- try {
- File file = new File(systemFolder, systemFolderFiles[i]);
- if (!file.isFile()) {
- continue;
- }
- // We're looking for a file with a creator code of 'MACS' and
- // a type of 'FNDR'. Only requiring the type results in non-Finder
- // applications being picked up on certain Mac OS 9 systems,
- // especially German ones, and sending a GURL event to those
- // applications results in a logout under Multiple Users.
- Object fileType = getFileType.invoke(null, new Object[] { file });
- if (FINDER_TYPE.equals(fileType.toString())) {
- Object fileCreator = getFileCreator.invoke(null, new Object[] { file });
- if (FINDER_CREATOR.equals(fileCreator.toString())) {
- browser = file.toString(); // Actually the Finder, but that's OK
- return browser;
- }
- }
- } catch (IllegalArgumentException iare) {
- browser = browser;
- errorMessage = iare.getMessage();
- return null;
- } catch (IllegalAccessException iae) {
- browser = null;
- errorMessage = iae.getMessage();
- return browser;
- } catch (InvocationTargetException ite) {
- browser = null;
- errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage();
- return browser;
- }
- }
- browser = null;
- break;
- case MRJ_3_0:
- case MRJ_3_1:
- browser = ""; // Return something non-null
- break;
- case WINDOWS_NT:
- browser = "cmd.exe";
- break;
- case WINDOWS_9x:
- browser = "command.com";
- break;
- case OTHER:
- default:
- browser = jalview.bin.Cache.applicationProperties.getProperty("jalview.browser");
- if (browser==null) {
- // hope firefox exists :-/
- browser = "firefox";
- }
- break;
- }
- return browser;
- }
-
- /**
- * Attempts to open the default web browser to the given URL.
- * @param url The URL to open
- * @throws IOException If the web browser could not be located or does not run
- */
- public static void openURL(String url) throws IOException {
- if (!loadedWithoutErrors) {
- throw new IOException("Exception in finding browser: " + errorMessage);
- }
- Object browser = locateBrowser();
- if (browser == null) {
- throw new IOException("Unable to locate browser: " + errorMessage);
- }
-
- switch (jvm) {
- case MRJ_2_0:
- Object aeDesc = null;
- try {
- aeDesc = aeDescConstructor.newInstance(new Object[] { url });
- putParameter.invoke(browser, new Object[] { keyDirectObject, aeDesc });
- sendNoReply.invoke(browser, new Object[] { });
- } catch (InvocationTargetException ite) {
- throw new IOException("InvocationTargetException while creating AEDesc: " + ite.getMessage());
- } catch (IllegalAccessException iae) {
- throw new IOException("IllegalAccessException while building AppleEvent: " + iae.getMessage());
- } catch (InstantiationException ie) {
- throw new IOException("InstantiationException while creating AEDesc: " + ie.getMessage());
- } finally {
- aeDesc = null; // Encourage it to get disposed if it was created
- browser = null; // Ditto
- }
- break;
- case MRJ_2_1:
- Runtime.getRuntime().exec(new String[] { (String) browser, url } );
- break;
- case MRJ_3_0:
- int[] instance = new int[1];
- int result = ICStart(instance, 0);
- if (result == 0) {
- int[] selectionStart = new int[] { 0 };
- byte[] urlBytes = url.getBytes();
- int[] selectionEnd = new int[] { urlBytes.length };
- result = ICLaunchURL(instance[0], new byte[] { 0 }, urlBytes,
- urlBytes.length, selectionStart,
- selectionEnd);
- if (result == 0) {
- // Ignore the return value; the URL was launched successfully
- // regardless of what happens here.
- ICStop(instance);
- } else {
- throw new IOException("Unable to launch URL: " + result);
- }
- } else {
- throw new IOException("Unable to create an Internet Config instance: " + result);
- }
- break;
- case MRJ_3_1:
- try {
- openURL.invoke(null, new Object[] { url });
- } catch (InvocationTargetException ite) {
- throw new IOException("InvocationTargetException while calling openURL: " + ite.getMessage());
- } catch (IllegalAccessException iae) {
- throw new IOException("IllegalAccessException while calling openURL: " + iae.getMessage());
- }
- break;
- case WINDOWS_NT:
- case WINDOWS_9x:
- // Add quotes around the URL to allow ampersands and other special
- // characters to work.
- Process process = Runtime.getRuntime().exec(new String[] { (String) browser,
- FIRST_WINDOWS_PARAMETER,
- SECOND_WINDOWS_PARAMETER,
- THIRD_WINDOWS_PARAMETER,
- '"' + url + '"' });
- // This avoids a memory leak on some versions of Java on Windows.
- // That's hinted at in <http://developer.java.sun.com/developer/qow/archive/68/>.
- try {
- process.waitFor();
- process.exitValue();
- } catch (InterruptedException ie) {
- throw new IOException("InterruptedException while launching browser: " + ie.getMessage());
- }
- break;
- case OTHER:
- // Assume that we're on Unix and that Netscape (actually Firefox) is installed
-
- // First, attempt to open the URL in a currently running session of Netscape
-
- // JBPNote log debug
- /* System.out.println("Executing : "+browser+" "+
- NETSCAPE_REMOTE_PARAMETER+" "+
- NETSCAPE_OPEN_PARAMETER_START +
- url +
- NETSCAPE_OPEN_NEW_WINDOW +
- NETSCAPE_OPEN_PARAMETER_END);
- */
- process = Runtime.getRuntime().exec(new String[] { (String) browser,
- NETSCAPE_REMOTE_PARAMETER,
- NETSCAPE_OPEN_PARAMETER_START +
- url +
- NETSCAPE_OPEN_NEW_WINDOW +
- NETSCAPE_OPEN_PARAMETER_END });
- try {
- int exitCode = process.waitFor();
- if (exitCode != 0) { // if Netscape was not open
- // JBPNote log debug
- // System.out.println("Executing : "+browser+" "+url+"\n");
- Runtime.getRuntime().exec(new String[] { (String) browser, url });
- }
- } catch (InterruptedException ie) {
- throw new IOException("InterruptedException while launching browser: " + ie.getMessage());
- }
- break;
- default:
- // This should never occur, but if it does, we'll try the simplest thing possible
- Runtime.getRuntime().exec(new String[] { (String) browser, url });
- break;
- }
- }
-
- /**
- * Methods required for Mac OS X. The presence of native methods does not cause
- * any problems on other platforms.
- */
- private native static int ICStart(int[] instance, int signature);
- private native static int ICStop(int[] instance);
- private native static int ICLaunchURL(int instance, byte[] hint, byte[] data, int len,
- int[] selectionStart, int[] selectionEnd);
-}
+/*\r
+ * Jalview - A Sequence Alignment Editor and Viewer\r
+ * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
+ *\r
+ * This program is free software; you can redistribute it and/or\r
+ * modify it under the terms of the GNU General Public License\r
+ * as published by the Free Software Foundation; either version 2\r
+ * of the License, or (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA\r
+ */\r
+package jalview.util;\r
+\r
+import java.io.*;\r
+import java.lang.reflect.*;\r
+\r
+/**\r
+ * BrowserLauncher is a class that provides one static method, openURL, which opens the default\r
+ * web browser for the current user of the system to the given URL. It may support other\r
+ * protocols depending on the system -- mailto, ftp, etc. -- but that has not been rigorously\r
+ * tested and is not guaranteed to work.\r
+ * <p>\r
+ * Yes, this is platform-specific code, and yes, it may rely on classes on certain platforms\r
+ * that are not part of the standard JDK. What we're trying to do, though, is to take something\r
+ * that's frequently desirable but inherently platform-specific -- opening a default browser --\r
+ * and allow programmers (you, for example) to do so without worrying about dropping into native\r
+ * code or doing anything else similarly evil.\r
+ * <p>\r
+ * Anyway, this code is completely in Java and will run on all JDK 1.1-compliant systems without\r
+ * modification or a need for additional libraries. All classes that are required on certain\r
+ * platforms to allow this to run are dynamically loaded at runtime via reflection and, if not\r
+ * found, will not cause this to do anything other than returning an error when opening the\r
+ * browser.\r
+ * <p>\r
+ * There are certain system requirements for this class, as it's running through Runtime.exec(),\r
+ * which is Java's way of making a native system call. Currently, this requires that a Macintosh\r
+ * have a Finder which supports the GURL event, which is true for Mac OS 8.0 and 8.1 systems that\r
+ * have the Internet Scripting AppleScript dictionary installed in the Scripting Additions folder\r
+ * in the Extensions folder (which is installed by default as far as I know under Mac OS 8.0 and\r
+ * 8.1), and for all Mac OS 8.5 and later systems. On Windows, it only runs under Win32 systems\r
+ * (Windows 95, 98, and NT 4.0, as well as later versions of all). On other systems, this drops\r
+ * back from the inherently platform-sensitive concept of a default browser and simply attempts\r
+ * to launch Netscape via a shell command.\r
+ * <p>\r
+ * This code is Copyright 1999-2001 by Eric Albert (ejalbert\@cs.stanford.edu) and may be\r
+ * redistributed or modified in any form without restrictions as long as the portion of this\r
+ * comment from this paragraph through the end of the comment is not removed. The author\r
+ * requests that he be notified of any application, applet, or other binary that makes use of\r
+ * this code, but that's more out of curiosity than anything and is not required. This software\r
+ * includes no warranty. The author is not repsonsible for any loss of data or functionality\r
+ * or any adverse or unexpected effects of using this software.\r
+ * <p>\r
+ * Credits:\r
+ * <br>Steven Spencer, JavaWorld magazine (<a href="http://www.javaworld.com/javaworld/javatips/jw-javatip66.html">Java Tip 66</a>)\r
+ * <br>Thanks also to Ron B. Yeh, Eric Shapiro, Ben Engber, Paul Teitlebaum, Andrea Cantatore,\r
+ * Larry Barowski, Trevor Bedzek, Frank Miedrich, and Ron Rabakukk\r
+ *\r
+ * @author Eric Albert (<a href="mailto:ejalbert@cs.stanford.edu">ejalbert@cs.stanford.edu</a>)\r
+ * @version 1.4b1 (Released June 20, 2001)\r
+ */\r
+public class BrowserLauncher\r
+{\r
+ /**\r
+ * The Java virtual machine that we are running on. Actually, in most cases we only care\r
+ * about the operating system, but some operating systems require us to switch on the VM. */\r
+ private static int jvm;\r
+\r
+ /** The browser for the system */\r
+ private static Object browser;\r
+\r
+ /**\r
+ * Caches whether any classes, methods, and fields that are not part of the JDK and need to\r
+ * be dynamically loaded at runtime loaded successfully.\r
+ * <p>\r
+ * Note that if this is <code>false</code>, <code>openURL()</code> will always return an\r
+ * IOException.\r
+ */\r
+ private static boolean loadedWithoutErrors;\r
+\r
+ /** The com.apple.mrj.MRJFileUtils class */\r
+ private static Class mrjFileUtilsClass;\r
+\r
+ /** The com.apple.mrj.MRJOSType class */\r
+ private static Class mrjOSTypeClass;\r
+\r
+ /** The com.apple.MacOS.AEDesc class */\r
+ private static Class aeDescClass;\r
+\r
+ /** The <init>(int) method of com.apple.MacOS.AETarget */\r
+ private static Constructor aeTargetConstructor;\r
+\r
+ /** The <init>(int, int, int) method of com.apple.MacOS.AppleEvent */\r
+ private static Constructor appleEventConstructor;\r
+\r
+ /** The <init>(String) method of com.apple.MacOS.AEDesc */\r
+ private static Constructor aeDescConstructor;\r
+\r
+ /** The findFolder method of com.apple.mrj.MRJFileUtils */\r
+ private static Method findFolder;\r
+\r
+ /** The getFileCreator method of com.apple.mrj.MRJFileUtils */\r
+ private static Method getFileCreator;\r
+\r
+ /** The getFileType method of com.apple.mrj.MRJFileUtils */\r
+ private static Method getFileType;\r
+\r
+ /** The openURL method of com.apple.mrj.MRJFileUtils */\r
+ private static Method openURL;\r
+\r
+ /** The makeOSType method of com.apple.MacOS.OSUtils */\r
+ private static Method makeOSType;\r
+\r
+ /** The putParameter method of com.apple.MacOS.AppleEvent */\r
+ private static Method putParameter;\r
+\r
+ /** The sendNoReply method of com.apple.MacOS.AppleEvent */\r
+ private static Method sendNoReply;\r
+\r
+ /** Actually an MRJOSType pointing to the System Folder on a Macintosh */\r
+ private static Object kSystemFolderType;\r
+\r
+ /** The keyDirectObject AppleEvent parameter type */\r
+ private static Integer keyDirectObject;\r
+\r
+ /** The kAutoGenerateReturnID AppleEvent code */\r
+ private static Integer kAutoGenerateReturnID;\r
+\r
+ /** The kAnyTransactionID AppleEvent code */\r
+ private static Integer kAnyTransactionID;\r
+\r
+ /** The linkage object required for JDirect 3 on Mac OS X. */\r
+ private static Object linkage;\r
+\r
+ /** The framework to reference on Mac OS X */\r
+ private static final String JDirect_MacOSX = "/System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/HIToolbox";\r
+\r
+ /** JVM constant for MRJ 2.0 */\r
+ private static final int MRJ_2_0 = 0;\r
+\r
+ /** JVM constant for MRJ 2.1 or later */\r
+ private static final int MRJ_2_1 = 1;\r
+\r
+ /** JVM constant for Java on Mac OS X 10.0 (MRJ 3.0) */\r
+ private static final int MRJ_3_0 = 3;\r
+\r
+ /** JVM constant for MRJ 3.1 */\r
+ private static final int MRJ_3_1 = 4;\r
+\r
+ /** JVM constant for any Windows NT JVM */\r
+ private static final int WINDOWS_NT = 5;\r
+\r
+ /** JVM constant for any Windows 9x JVM */\r
+ private static final int WINDOWS_9x = 6;\r
+\r
+ /** JVM constant for any other platform */\r
+ private static final int OTHER = -1;\r
+\r
+ /**\r
+ * The file type of the Finder on a Macintosh. Hardcoding "Finder" would keep non-U.S. English\r
+ * systems from working properly.\r
+ */\r
+ private static final String FINDER_TYPE = "FNDR";\r
+\r
+ /**\r
+ * The creator code of the Finder on a Macintosh, which is needed to send AppleEvents to the\r
+ * application.\r
+ */\r
+ private static final String FINDER_CREATOR = "MACS";\r
+\r
+ /** The name for the AppleEvent type corresponding to a GetURL event. */\r
+ private static final String GURL_EVENT = "GURL";\r
+\r
+ /**\r
+ * The first parameter that needs to be passed into Runtime.exec() to open the default web\r
+ * browser on Windows.\r
+ */\r
+ private static final String FIRST_WINDOWS_PARAMETER = "/c";\r
+\r
+ /** The second parameter for Runtime.exec() on Windows. */\r
+ private static final String SECOND_WINDOWS_PARAMETER = "start";\r
+\r
+ /**\r
+ * The third parameter for Runtime.exec() on Windows. This is a "title"\r
+ * parameter that the command line expects. Setting this parameter allows\r
+ * URLs containing spaces to work.\r
+ */\r
+ private static final String THIRD_WINDOWS_PARAMETER = "\"\"";\r
+\r
+ /**\r
+ * The shell parameters for Netscape that opens a given URL in an already-open copy of Netscape\r
+ * on many command-line systems.\r
+ */\r
+ private static final String NETSCAPE_REMOTE_PARAMETER = "-remote";\r
+ private static final String NETSCAPE_OPEN_PARAMETER_START = "openURL(";\r
+ private static final String NETSCAPE_OPEN_NEW_WINDOW = ", new-window";\r
+ private static final String NETSCAPE_OPEN_PARAMETER_END = ")";\r
+\r
+ /**\r
+ * The message from any exception thrown throughout the initialization process.\r
+ */\r
+ private static String errorMessage;\r
+\r
+ /**\r
+ * An initialization block that determines the operating system and loads the necessary\r
+ * runtime data.\r
+ */\r
+ static\r
+ {\r
+ loadedWithoutErrors = true;\r
+\r
+ String osName = System.getProperty("os.name");\r
+\r
+ if (osName.startsWith("Mac OS"))\r
+ {\r
+ String mrjVersion = System.getProperty("mrj.version");\r
+ String majorMRJVersion = mrjVersion.substring(0, 3);\r
+\r
+ try\r
+ {\r
+ double version = Double.valueOf(majorMRJVersion).doubleValue();\r
+\r
+ if (version == 2)\r
+ {\r
+ jvm = MRJ_2_0;\r
+ }\r
+ else if ( (version >= 2.1) && (version < 3))\r
+ {\r
+ // Assume that all 2.x versions of MRJ work the same. MRJ 2.1 actually\r
+ // works via Runtime.exec() and 2.2 supports that but has an openURL() method\r
+ // as well that we currently ignore.\r
+ jvm = MRJ_2_1;\r
+ }\r
+ else if (version == 3.0)\r
+ {\r
+ jvm = MRJ_3_0;\r
+ }\r
+ else if (version >= 3.1)\r
+ {\r
+ // Assume that all 3.1 and later versions of MRJ work the same.\r
+ jvm = MRJ_3_1;\r
+ }\r
+ else\r
+ {\r
+ loadedWithoutErrors = false;\r
+ errorMessage = "Unsupported MRJ version: " + version;\r
+ }\r
+ }\r
+ catch (NumberFormatException nfe)\r
+ {\r
+ loadedWithoutErrors = false;\r
+ errorMessage = "Invalid MRJ version: " + mrjVersion;\r
+ }\r
+ }\r
+ else if (osName.startsWith("Windows"))\r
+ {\r
+ if (osName.indexOf("9") != -1)\r
+ {\r
+ jvm = WINDOWS_9x;\r
+ }\r
+ else\r
+ {\r
+ jvm = WINDOWS_NT;\r
+ }\r
+ }\r
+ else\r
+ {\r
+ jvm = OTHER;\r
+ }\r
+\r
+ if (loadedWithoutErrors)\r
+ { // if we haven't hit any errors yet\r
+ loadedWithoutErrors = loadClasses();\r
+ }\r
+ }\r
+\r
+ /**\r
+ * This class should be never be instantiated; this just ensures so.\r
+ */\r
+ private BrowserLauncher()\r
+ {\r
+ }\r
+\r
+ /**\r
+ * Called by a static initializer to load any classes, fields, and methods required at runtime\r
+ * to locate the user's web browser.\r
+ * @return <code>true</code> if all intialization succeeded\r
+ * <code>false</code> if any portion of the initialization failed\r
+ */\r
+ private static boolean loadClasses()\r
+ {\r
+ switch (jvm)\r
+ {\r
+ case MRJ_2_0:\r
+\r
+ try\r
+ {\r
+ Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");\r
+ Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");\r
+ Class appleEventClass = Class.forName(\r
+ "com.apple.MacOS.AppleEvent");\r
+ Class aeClass = Class.forName("com.apple.MacOS.ae");\r
+ aeDescClass = Class.forName("com.apple.MacOS.AEDesc");\r
+\r
+ aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[]\r
+ {\r
+ int.class\r
+ });\r
+ appleEventConstructor = appleEventClass.getDeclaredConstructor(new\r
+ Class[]\r
+ {\r
+ int.class, int.class, aeTargetClass, int.class,\r
+ int.class\r
+ });\r
+ aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[]\r
+ {\r
+ String.class\r
+ });\r
+\r
+ makeOSType = osUtilsClass.getDeclaredMethod("makeOSType",\r
+ new Class[]\r
+ {String.class});\r
+ putParameter = appleEventClass.getDeclaredMethod("putParameter",\r
+ new Class[]\r
+ {int.class, aeDescClass});\r
+ sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply",\r
+ new Class[]\r
+ {});\r
+\r
+ Field keyDirectObjectField = aeClass.getDeclaredField(\r
+ "keyDirectObject");\r
+ keyDirectObject = (Integer) keyDirectObjectField.get(null);\r
+\r
+ Field autoGenerateReturnIDField = appleEventClass.getDeclaredField(\r
+ "kAutoGenerateReturnID");\r
+ kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);\r
+\r
+ Field anyTransactionIDField = appleEventClass.getDeclaredField(\r
+ "kAnyTransactionID");\r
+ kAnyTransactionID = (Integer) anyTransactionIDField.get(null);\r
+ }\r
+ catch (ClassNotFoundException cnfe)\r
+ {\r
+ errorMessage = cnfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchMethodException nsme)\r
+ {\r
+ errorMessage = nsme.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchFieldException nsfe)\r
+ {\r
+ errorMessage = nsfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ errorMessage = iae.getMessage();\r
+\r
+ return false;\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ case MRJ_2_1:\r
+\r
+ try\r
+ {\r
+ mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");\r
+ mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");\r
+\r
+ Field systemFolderField = mrjFileUtilsClass.getDeclaredField(\r
+ "kSystemFolderType");\r
+ kSystemFolderType = systemFolderField.get(null);\r
+ findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder",\r
+ new Class[]\r
+ {mrjOSTypeClass});\r
+ getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator",\r
+ new Class[]\r
+ {File.class});\r
+ getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType",\r
+ new Class[]\r
+ {File.class});\r
+ }\r
+ catch (ClassNotFoundException cnfe)\r
+ {\r
+ errorMessage = cnfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchFieldException nsfe)\r
+ {\r
+ errorMessage = nsfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchMethodException nsme)\r
+ {\r
+ errorMessage = nsme.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (SecurityException se)\r
+ {\r
+ errorMessage = se.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ errorMessage = iae.getMessage();\r
+\r
+ return false;\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ case MRJ_3_0:\r
+\r
+ try\r
+ {\r
+ Class linker = Class.forName("com.apple.mrj.jdirect.Linker");\r
+ Constructor constructor = linker.getConstructor(new Class[]\r
+ {\r
+ Class.class\r
+ });\r
+ linkage = constructor.newInstance(new Object[]\r
+ {\r
+ BrowserLauncher.class\r
+ });\r
+ }\r
+ catch (ClassNotFoundException cnfe)\r
+ {\r
+ errorMessage = cnfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchMethodException nsme)\r
+ {\r
+ errorMessage = nsme.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ errorMessage = ite.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (InstantiationException ie)\r
+ {\r
+ errorMessage = ie.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ errorMessage = iae.getMessage();\r
+\r
+ return false;\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ case MRJ_3_1:\r
+\r
+ try\r
+ {\r
+ mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");\r
+ openURL = mrjFileUtilsClass.getDeclaredMethod("openURL",\r
+ new Class[]\r
+ {String.class});\r
+ }\r
+ catch (ClassNotFoundException cnfe)\r
+ {\r
+ errorMessage = cnfe.getMessage();\r
+\r
+ return false;\r
+ }\r
+ catch (NoSuchMethodException nsme)\r
+ {\r
+ errorMessage = nsme.getMessage();\r
+\r
+ return false;\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ default:\r
+ break;\r
+ }\r
+\r
+ return true;\r
+ }\r
+\r
+ /**\r
+ * Attempts to locate the default web browser on the local system. s results so it\r
+ * only locates the browser once for each use of this class per JVM instance.\r
+ * @return The browser for the system. Note that this may not be what you would consider\r
+ * to be a standard web browser; instead, it's the application that gets called to\r
+ * open the default web browser. In some cases, this will be a non-String object\r
+ * that provides the means of calling the default browser.\r
+ */\r
+ private static Object locateBrowser()\r
+ {\r
+ if (browser != null)\r
+ {\r
+ return browser;\r
+ }\r
+\r
+ switch (jvm)\r
+ {\r
+ case MRJ_2_0:\r
+\r
+ try\r
+ {\r
+ Integer finderCreatorCode = (Integer) makeOSType.invoke(null,\r
+ new Object[]\r
+ {FINDER_CREATOR});\r
+ Object aeTarget = aeTargetConstructor.newInstance(new Object[]\r
+ {\r
+ finderCreatorCode\r
+ });\r
+ Integer gurlType = (Integer) makeOSType.invoke(null,\r
+ new Object[]\r
+ {GURL_EVENT});\r
+ Object appleEvent = appleEventConstructor.newInstance(new Object[]\r
+ {\r
+ gurlType, gurlType, aeTarget, kAutoGenerateReturnID,\r
+ kAnyTransactionID\r
+ });\r
+\r
+ // Don't set browser = appleEvent because then the next time we call\r
+ // locateBrowser(), we'll get the same AppleEvent, to which we'll already have\r
+ // added the relevant parameter. Instead, regenerate the AppleEvent every time.\r
+ // There's probably a way to do this better; if any has any ideas, please let\r
+ // me know.\r
+ return appleEvent;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ browser = null;\r
+ errorMessage = iae.getMessage();\r
+\r
+ return browser;\r
+ }\r
+ catch (InstantiationException ie)\r
+ {\r
+ browser = null;\r
+ errorMessage = ie.getMessage();\r
+\r
+ return browser;\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ browser = null;\r
+ errorMessage = ite.getMessage();\r
+\r
+ return browser;\r
+ }\r
+\r
+ case MRJ_2_1:\r
+\r
+ File systemFolder;\r
+\r
+ try\r
+ {\r
+ systemFolder = (File) findFolder.invoke(null,\r
+ new Object[]\r
+ {kSystemFolderType});\r
+ }\r
+ catch (IllegalArgumentException iare)\r
+ {\r
+ browser = null;\r
+ errorMessage = iare.getMessage();\r
+\r
+ return browser;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ browser = null;\r
+ errorMessage = iae.getMessage();\r
+\r
+ return browser;\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ browser = null;\r
+ errorMessage = ite.getTargetException().getClass() + ": " +\r
+ ite.getTargetException().getMessage();\r
+\r
+ return browser;\r
+ }\r
+\r
+ String[] systemFolderFiles = systemFolder.list();\r
+\r
+ // Avoid a FilenameFilter because that can't be stopped mid-list\r
+ for (int i = 0; i < systemFolderFiles.length; i++)\r
+ {\r
+ try\r
+ {\r
+ File file = new File(systemFolder, systemFolderFiles[i]);\r
+\r
+ if (!file.isFile())\r
+ {\r
+ continue;\r
+ }\r
+\r
+ // We're looking for a file with a creator code of 'MACS' and\r
+ // a type of 'FNDR'. Only requiring the type results in non-Finder\r
+ // applications being picked up on certain Mac OS 9 systems,\r
+ // especially German ones, and sending a GURL event to those\r
+ // applications results in a logout under Multiple Users.\r
+ Object fileType = getFileType.invoke(null,\r
+ new Object[]\r
+ {file});\r
+\r
+ if (FINDER_TYPE.equals(fileType.toString()))\r
+ {\r
+ Object fileCreator = getFileCreator.invoke(null,\r
+ new Object[]\r
+ {file});\r
+\r
+ if (FINDER_CREATOR.equals(fileCreator.toString()))\r
+ {\r
+ browser = file.toString(); // Actually the Finder, but that's OK\r
+\r
+ return browser;\r
+ }\r
+ }\r
+ }\r
+ catch (IllegalArgumentException iare)\r
+ {\r
+ errorMessage = iare.getMessage();\r
+\r
+ return null;\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ browser = null;\r
+ errorMessage = iae.getMessage();\r
+\r
+ return browser;\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ browser = null;\r
+ errorMessage = ite.getTargetException().getClass() + ": " +\r
+ ite.getTargetException().getMessage();\r
+\r
+ return browser;\r
+ }\r
+ }\r
+\r
+ browser = null;\r
+\r
+ break;\r
+\r
+ case MRJ_3_0:\r
+ case MRJ_3_1:\r
+ browser = ""; // Return something non-null\r
+\r
+ break;\r
+\r
+ case WINDOWS_NT:\r
+ browser = "cmd.exe";\r
+\r
+ break;\r
+\r
+ case WINDOWS_9x:\r
+ browser = "command.com";\r
+\r
+ break;\r
+\r
+ case OTHER:\r
+ default:\r
+ browser = jalview.bin.Cache.getDefault("DEFAULT_BROWSER", "firefox");\r
+\r
+ break;\r
+ }\r
+\r
+ return browser;\r
+ }\r
+ /**\r
+ * used to ensure that browser is up-to-date after a configuration\r
+ * change (Unix DEFAULT_BROWSER property change).\r
+ */\r
+ public static void resetBrowser() {\r
+ browser = null;\r
+ }\r
+ /**\r
+ * Attempts to open the default web browser to the given URL.\r
+ * @param url The URL to open\r
+ * @throws IOException If the web browser could not be located or does not run\r
+ */\r
+ public static void openURL(String url)\r
+ throws IOException\r
+ {\r
+ if (!loadedWithoutErrors)\r
+ {\r
+ throw new IOException("Exception in finding browser: " +\r
+ errorMessage);\r
+ }\r
+\r
+ Object browser = locateBrowser();\r
+\r
+ if (browser == null)\r
+ {\r
+ throw new IOException("Unable to locate browser: " + errorMessage);\r
+ }\r
+\r
+ switch (jvm)\r
+ {\r
+ case MRJ_2_0:\r
+\r
+ Object aeDesc = null;\r
+\r
+ try\r
+ {\r
+ aeDesc = aeDescConstructor.newInstance(new Object[]\r
+ {url});\r
+ putParameter.invoke(browser,\r
+ new Object[]\r
+ {keyDirectObject, aeDesc});\r
+ sendNoReply.invoke(browser, new Object[]\r
+ {});\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ throw new IOException(\r
+ "InvocationTargetException while creating AEDesc: " +\r
+ ite.getMessage());\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ throw new IOException(\r
+ "IllegalAccessException while building AppleEvent: " +\r
+ iae.getMessage());\r
+ }\r
+ catch (InstantiationException ie)\r
+ {\r
+ throw new IOException(\r
+ "InstantiationException while creating AEDesc: " +\r
+ ie.getMessage());\r
+ }\r
+ finally\r
+ {\r
+ aeDesc = null; // Encourage it to get disposed if it was created\r
+ browser = null; // Ditto\r
+ }\r
+\r
+ break;\r
+\r
+ case MRJ_2_1:\r
+ Runtime.getRuntime().exec(new String[]\r
+ { (String) browser, url});\r
+\r
+ break;\r
+\r
+ case MRJ_3_0:\r
+\r
+ int[] instance = new int[1];\r
+ int result = ICStart(instance, 0);\r
+\r
+ if (result == 0)\r
+ {\r
+ int[] selectionStart = new int[]\r
+ {\r
+ 0};\r
+ byte[] urlBytes = url.getBytes();\r
+ int[] selectionEnd = new int[]\r
+ {\r
+ urlBytes.length};\r
+ result = ICLaunchURL(instance[0], new byte[]\r
+ {0}, urlBytes,\r
+ urlBytes.length, selectionStart, selectionEnd);\r
+\r
+ if (result == 0)\r
+ {\r
+ // Ignore the return value; the URL was launched successfully\r
+ // regardless of what happens here.\r
+ ICStop(instance);\r
+ }\r
+ else\r
+ {\r
+ throw new IOException("Unable to launch URL: " + result);\r
+ }\r
+ }\r
+ else\r
+ {\r
+ throw new IOException(\r
+ "Unable to create an Internet Config instance: " + result);\r
+ }\r
+\r
+ break;\r
+\r
+ case MRJ_3_1:\r
+\r
+ try\r
+ {\r
+ openURL.invoke(null, new Object[]\r
+ {url});\r
+ }\r
+ catch (InvocationTargetException ite)\r
+ {\r
+ throw new IOException(\r
+ "InvocationTargetException while calling openURL: " +\r
+ ite.getMessage());\r
+ }\r
+ catch (IllegalAccessException iae)\r
+ {\r
+ throw new IOException(\r
+ "IllegalAccessException while calling openURL: " +\r
+ iae.getMessage());\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ case WINDOWS_NT:\r
+ case WINDOWS_9x:\r
+\r
+ // Add quotes around the URL to allow ampersands and other special\r
+ // characters to work.\r
+ Process process = Runtime.getRuntime().exec(new String[]\r
+ {\r
+ (String) browser, FIRST_WINDOWS_PARAMETER,\r
+ SECOND_WINDOWS_PARAMETER, THIRD_WINDOWS_PARAMETER,\r
+ '"' + url + '"'\r
+ });\r
+\r
+ // This avoids a memory leak on some versions of Java on Windows.\r
+ // That's hinted at in <http://developer.java.sun.com/developer/qow/archive/68/>.\r
+ try\r
+ {\r
+ process.waitFor();\r
+ process.exitValue();\r
+ }\r
+ catch (InterruptedException ie)\r
+ {\r
+ throw new IOException(\r
+ "InterruptedException while launching browser: " +\r
+ ie.getMessage());\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ case OTHER:\r
+\r
+ // Assume that we're on Unix and that Netscape (actually Firefox) is installed\r
+ // First, attempt to open the URL in a currently running session of Netscape\r
+ // JBPNote log debug\r
+\r
+ /* System.out.println("Executing : "+browser+" "+\r
+ NETSCAPE_REMOTE_PARAMETER+" "+\r
+ NETSCAPE_OPEN_PARAMETER_START +\r
+ url +\r
+ NETSCAPE_OPEN_NEW_WINDOW +\r
+ NETSCAPE_OPEN_PARAMETER_END);\r
+ */\r
+ process = Runtime.getRuntime().exec(new String[]\r
+ {\r
+ (String) browser,\r
+ NETSCAPE_REMOTE_PARAMETER,\r
+\r
+ NETSCAPE_OPEN_PARAMETER_START + url +\r
+ NETSCAPE_OPEN_NEW_WINDOW +\r
+ NETSCAPE_OPEN_PARAMETER_END\r
+ });\r
+\r
+ try\r
+ {\r
+ int exitCode = process.waitFor();\r
+\r
+ if (exitCode != 0)\r
+ { // if Netscape was not open\r
+ Runtime.getRuntime().exec(new String[]\r
+ { (String) browser, url});\r
+ }\r
+ }\r
+ catch (InterruptedException ie)\r
+ {\r
+ throw new IOException(\r
+ "InterruptedException while launching browser: " +\r
+ ie.getMessage());\r
+ }\r
+\r
+ break\r
+ ;\r
+\r
+ default:\r
+\r
+ // This should never occur, but if it does, we'll try the simplest thing possible\r
+ Runtime.getRuntime().exec(new String[]\r
+ { (String) browser, url});\r
+\r
+ break;\r
+ }\r
+ }\r
+\r
+ /**\r
+ * Methods required for Mac OS X. The presence of native methods does not cause\r
+ * any problems on other platforms.\r
+ */\r
+ private native static int ICStart(int[] instance, int signature);\r
+\r
+ private native static int ICStop(int[] instance);\r
+\r
+ private native static int ICLaunchURL(int instance, byte[] hint,\r
+ byte[] data, int len,\r
+ int[] selectionStart,\r
+ int[] selectionEnd);\r
+}\r
git://source.jalview.org / jalview.git / blobdiff