net.sourceforge.phpeclipse.webbrowser/src/net/sourceforge/phpeclipse/webbrowser/internal/WebBrowserUtil.java

   1 /**
   2  * Copyright (c) 2003 IBM Corporation and others.
   3  * All rights reserved.   This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *    IBM - Initial API and implementation
  10  */
  11 package net.sourceforge.phpeclipse.webbrowser.internal;
  12
  13 import java.io.File;
  14 import java.io.InputStreamReader;
  15 import java.io.Reader;
  16 import java.net.URL;
  17 import java.util.ArrayList;
  18 import java.util.Iterator;
  19 import java.util.List;
  20
  21 import net.sourceforge.phpeclipse.webbrowser.IExternalWebBrowser;
  22 import net.sourceforge.phpeclipse.webbrowser.IExternalWebBrowserWorkingCopy;
  23 import net.sourceforge.phpeclipse.webbrowser.IURLMap;
  24 import net.sourceforge.phpeclipse.webbrowser.IWebBrowser;
  25
  26 import org.eclipse.ui.IMemento;
  27 import org.eclipse.ui.XMLMemento;
  28 import org.eclipse.swt.widgets.Display;
  29 import org.eclipse.swt.widgets.Shell;
  30 import org.eclipse.core.runtime.*;
  31 import org.eclipse.jface.dialogs.MessageDialog;
  32 import org.eclipse.swt.SWT;
  33 import org.eclipse.swt.browser.Browser;
  34 /**
  35  * Utility class for the Web browser tooling.
  36  */
  37 public class WebBrowserUtil {
  38         private static List urlMaps;
  39         private static List lockedFavorites;
  40         private static List unlockedFavorites;
  41         private static final String BROWSER_PACKAGE_NAME = "org.eclipse.swt.browser.Browser";
  42         public static Boolean isInternalBrowserOperational;
  43
  44         private static List defaultBrowsers2;
  45
  46         static class DefaultBrowser {
  47                 String name;
  48                 String params;
  49                 String executable;
  50                 String[] locations;
  51
  52                 public DefaultBrowser(String name, String executable, String params, String[] locations) {
  53                         if (name == null)
  54                                 name = "<unknown>";
  55                         else if (name.startsWith("%"))
  56                                 name = WebBrowserUIPlugin.getResource(name);
  57
  58                         this.name = name;
  59                         this.executable = executable;
  60                         this.params = params;
  61                         this.locations = locations;
  62                 }
  63
  64                 public String toString() {
  65                         String s = "Browser: " + name + ", " + executable + ", " + params + ", ";
  66                         if (locations != null) {
  67                                 int size = locations.length;
  68                                 for (int i = 0; i < size; i++) {
  69                                         s += locations[i] + ";";
  70                                 }
  71                         }
  72                         return s;
  73                 }
  74         }
  75
  76         /**
  77          * WebBrowserUtil constructor comment.
  78          */
  79         public WebBrowserUtil() {
  80                 super();
  81         }
  82
  83         /**
  84          * Returns true if we're running on Windows.
  85          *
  86          * @return boolean
  87          */
  88         public static boolean isWindows() {
  89                 String os = System.getProperty("os.name");
  90                 if (os != null && os.toLowerCase().indexOf("win") >= 0)
  91                         return true;
  92                 else
  93                         return false;
  94         }
  95
  96         /**
  97          * Returns true if we're running on linux.
  98          *
  99          * @return boolean
 100          */
 101         public static boolean isLinux() {
 102                 String os = System.getProperty("os.name");
 103                 if (os != null && os.toLowerCase().indexOf("lin") >= 0)
 104                         return true;
 105                 else
 106                         return false;
 107         }
 108
 109         /**
 110          * Open a dialog window.
 111          *
 112          * @param title java.lang.String
 113          * @param message java.lang.String
 114          */
 115         public static void openError(String message) {
 116                 Display d = Display.getCurrent();
 117                 if (d == null)
 118                         d = Display.getDefault();
 119
 120                 Shell shell = d.getActiveShell();
 121                 MessageDialog.openError(shell, WebBrowserUIPlugin.getResource("%errorDialogTitle"), message);
 122         }
 123
 124         /**
 125          * Open a dialog window.
 126          *
 127          * @param title java.lang.String
 128          * @param message java.lang.String
 129          */
 130         public static void openMessage(String message) {
 131                 Display d = Display.getCurrent();
 132                 if (d == null)
 133                         d = Display.getDefault();
 134
 135                 Shell shell = d.getActiveShell();
 136                 MessageDialog.openInformation(shell, WebBrowserUIPlugin.getResource("%searchingTaskName"), message);
 137         }
 138
 139         /**
 140          * Returns a List of all URL maps.
 141          *
 142          * @return java.util.List
 143          */
 144         public static List getURLMaps() {
 145                 if (urlMaps == null)
 146                         loadURLMaps();
 147                 return urlMaps;
 148         }
 149
 150         /**
 151          * Load the url map extension point.
 152          */
 153         private static void loadURLMaps() {
 154                 Trace.trace(Trace.FINEST, "->- Loading .urlMap extension point ->-");
 155                 IExtensionRegistry registry = Platform.getExtensionRegistry();
 156                 IConfigurationElement[] cf = registry.getConfigurationElementsFor(WebBrowserUIPlugin.PLUGIN_ID, "urlMap");
 157
 158                 int size = cf.length;
 159                 urlMaps = new ArrayList(size);
 160                 for (int i = 0; i < size; i++) {
 161                         try {
 162                                 IURLMap mapper = (IURLMap) cf[i].createExecutableExtension("class");
 163                                 urlMaps.add(mapper);
 164                                 Trace.trace(Trace.FINEST, "  Loaded url map: " + cf[i].getAttribute("id"));
 165                         } catch (Throwable t) {
 166                                 Trace.trace(Trace.SEVERE, "  Could not load url map: " + cf[i].getAttribute("id"), t);
 167                         }
 168                 }
 169
 170                 Trace.trace(Trace.FINEST, "-<- Done loading .urlMap extension point -<-");
 171         }
 172
 173         /**
 174          * Returns a List of all unlocked favorites.
 175          *
 176          * @return java.util.List
 177          */
 178         public static List getUnlockedFavorites() {
 179                 if (unlockedFavorites == null)
 180                         loadFavorites();
 181                 return unlockedFavorites;
 182         }
 183
 184         /**
 185          * Returns a List of all locked favorites.
 186          *
 187          * @return java.util.List
 188          */
 189         public static List getLockedFavorites() {
 190                 if (lockedFavorites == null)
 191                         loadFavorites();
 192                 return lockedFavorites;
 193         }
 194
 195         /**
 196          * Load the favorites extension point.
 197          */
 198         private static void loadFavorites() {
 199                 Trace.trace(Trace.FINEST, "->- Loading .favorites extension point ->-");
 200                 IExtensionRegistry registry = Platform.getExtensionRegistry();
 201                 IConfigurationElement[] cf = registry.getConfigurationElementsFor(WebBrowserUIPlugin.PLUGIN_ID, "favorites");
 202
 203                 int size = cf.length;
 204                 unlockedFavorites = new ArrayList(size);
 205                 lockedFavorites = new ArrayList(size);
 206                 for (int i = 0; i < size; i++) {
 207                         try {
 208                                 Favorite f = new Favorite(cf[i].getAttribute("name"), cf[i].getAttribute("url"));
 209                                 String locked = cf[i].getAttribute("locked");
 210                                 if (!"true".equals(locked))
 211                                         unlockedFavorites.add(f);
 212                                 else
 213                                         lockedFavorites.add(f);
 214                                 Trace.trace(Trace.FINEST, "  Loaded favorite: " + cf[i].getAttribute("id"));
 215                         } catch (Throwable t) {
 216                                 Trace.trace(Trace.SEVERE, "  Could not load favorite: " + cf[i].getAttribute("id"), t);
 217                         }
 218                 }
 219
 220                 Trace.trace(Trace.FINEST, "-<- Done loading .favorites extension point -<-");
 221         }
 222
 223         /**
 224          * Returns whether it should be possible to use the internal browser or not, based on whether or not
 225          * the org.eclipse.swt.Browser class can be found/loaded. If it can it means is is supported on the platform in which
 226          * this plugin is running. If not, disable the ability to use the internal browser.
 227          *
 228          * @return boolean
 229          */
 230         public static boolean canUseInternalWebBrowser() {
 231                 try {
 232                         Class clazz = Class.forName(BROWSER_PACKAGE_NAME);
 233                         if (clazz != null)
 234                                 return true;
 235                 } catch (ClassNotFoundException e) { }
 236                 return false;
 237         }
 238
 239         /**
 240          * This method checks to see if it can new up a new Browser. If the SWT widget can not be bound
 241          * to the particular operating system it throws an SWTException. We catch that and set a boolean
 242          * flag which represents whether or not we were successfully able to create a Browser instance or not.
 243          * If not, don't bother adding the Internal Web Browser that uses this widget. Designed to be attemped
 244          * only once and the flag set used throughout.
 245          *
 246          * @return boolean
 247          */
 248         protected static boolean isInternalBrowserOperational() {
 249                 // if we have already figured this out, don't do it again.
 250                 if (isInternalBrowserOperational != null)
 251                         return isInternalBrowserOperational.booleanValue();
 252
 253                 try {
 254                         new Browser(new Shell(Display.getCurrent()), SWT.NONE);
 255                         isInternalBrowserOperational = new Boolean(true);
 256                 } catch (Throwable t) {
 257                         WebBrowserUIPlugin.getInstance().getLog().log(new Status(IStatus.WARNING,
 258                                 WebBrowserUIPlugin.PLUGIN_ID, 0, "Internal browser is not operational", t));
 259                         isInternalBrowserOperational = new Boolean(false);
 260                 }
 261                 return isInternalBrowserOperational.booleanValue();
 262         }
 263
 264         public static List getExternalBrowserPaths() {
 265                 List paths = new ArrayList();
 266                 Iterator iterator = BrowserManager.getInstance().getWebBrowsers().iterator();
 267                 while (iterator.hasNext()) {
 268                         IWebBrowser wb = (IWebBrowser) iterator.next();
 269                         if (wb instanceof IExternalWebBrowser) {
 270                                 IExternalWebBrowser ext = (IExternalWebBrowser) wb;
 271                                 paths.add(ext.getLocation().toLowerCase());
 272                         }
 273                 }
 274                 return paths;
 275         }
 276
 277         // Add any supported EXTERNAL web browsers found after an arbitrary check in specific paths
 278         public static void addFoundBrowsers(List list) {
 279                 List paths = getExternalBrowserPaths();
 280
 281                 Iterator iterator = getDefaultBrowsers().iterator();
 282                 while (iterator.hasNext()) {
 283                         DefaultBrowser browser2 = (DefaultBrowser) iterator.next();
 284                         if (browser2.locations != null) {
 285                                 int size = browser2.locations.length;
 286                                 for (int j = 0; j < size; j++) {
 287                                         String location = browser2.locations[j];
 288                                         if (!paths.contains(location.toLowerCase())) {
 289                                                 try {
 290                                                         File f = new File(location);
 291                                                         if (f.exists()) {
 292                                                                 ExternalWebBrowser browser = new ExternalWebBrowser();
 293                                                                 browser.name = browser2.name;
 294                                                                 browser.location = location;
 295                                                                 browser.parameters = browser2.params;
 296                                                                 list.add(browser);
 297                                                                 //Add browser here so that it get added to the table
 298                                                                 BrowserManager.getInstance().addBrowser(browser);
 299                                                                 j += size;
 300                                                         }
 301                                                 } catch (Exception e) { }
 302                                         }
 303                                 }
 304                         }
 305                 }
 306         }
 307
 308         /**
 309          * Create an external Web browser if the file matches the default (known) browsers.
 310          * @param file
 311          * @return
 312          */
 313         public static IExternalWebBrowserWorkingCopy createExternalBrowser(File file) {
 314                 if (file == null || !file.isFile())
 315                         return null;
 316
 317                 String executable = file.getName();
 318                 Iterator iterator = getDefaultBrowsers().iterator();
 319                 while (iterator.hasNext()) {
 320                         DefaultBrowser db = (DefaultBrowser) iterator.next();
 321                         if (executable.equals(db.executable)) {
 322                                 IExternalWebBrowserWorkingCopy browser = BrowserManager.getInstance().createExternalWebBrowser();
 323                                 browser.setName(db.name);
 324                                 browser.setLocation(file.getAbsolutePath());
 325                                 browser.setParameters(db.params);
 326                                 return browser;
 327                         }
 328                 }
 329
 330                 return null;
 331         }
 332
 333         protected static List getDefaultBrowsers() {
 334                 if (defaultBrowsers2 != null)
 335                         return defaultBrowsers2;
 336
 337                 Reader reader = null;
 338                 defaultBrowsers2 = new ArrayList();
 339                 try {
 340                         URL url = WebBrowserUIPlugin.getInstance().getBundle().getEntry("defaultBrowsers.xml");
 341                         URL url2 = Platform.resolve(url);
 342                         reader = new InputStreamReader(url2.openStream());
 343                         IMemento memento = XMLMemento.createReadRoot(reader);
 344                         IMemento[] children = memento.getChildren("browser");
 345                         if (children != null) {
 346                                 int size = children.length;
 347                                 for (int i = 0; i < size; i++) {
 348                                         IMemento child = children[i];
 349                                         String name = child.getString("name");
 350                                         String executable = child.getString("executable");
 351                                         String params = child.getString("params");
 352                                         List locations = new ArrayList();
 353
 354                                         IMemento[] locat = child.getChildren("location");
 355                                         if (locat != null) {
 356                                                 int size2 = locat.length;
 357                                                 for (int j = 0; j < size2; j++)
 358                                                         locations.add(locat[j].getTextData());
 359                                         }
 360
 361                                         String[] loc = new String[locations.size()];
 362                                         locations.toArray(loc);
 363                                         DefaultBrowser db = new DefaultBrowser(name, executable, params, loc);
 364                                         Trace.trace(Trace.CONFIG, "Default browser: " + db);
 365                                         defaultBrowsers2.add(db);
 366                                 }
 367                         }
 368                 } catch (Exception e) {
 369                         Trace.trace(Trace.SEVERE, "Error loading default browsers", e);
 370                 } finally {
 371                         try {
 372                                 reader.close();
 373                         } catch (Exception e) { }
 374                 }
 375                 return defaultBrowsers2;
 376         }
 377 }