net.sourceforge.phpeclipse.webbrowser/src/org/eclipse/webbrowser/internal/BrowserSearcher.java

   1 package org.eclipse.webbrowser.internal;
   2 /**********************************************************************
   3  * Copyright (c) 2003 IBM Corporation and others.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Common Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/cpl-v10.html
   8   *
   9  * Contributors:
  10  *    IBM - Initial API and implementation
  11  **********************************************************************/
  12 import java.io.File;
  13 import java.io.IOException;
  14 import java.lang.reflect.InvocationTargetException;
  15 import java.text.MessageFormat;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
  19 import org.eclipse.jface.operation.IRunnableWithProgress;
  20 import org.eclipse.swt.widgets.DirectoryDialog;
  21 import org.eclipse.swt.widgets.Shell;
  22 import org.eclipse.webbrowser.IExternalWebBrowserWorkingCopy;
  23 import org.eclipse.core.runtime.IProgressMonitor;
  24 /**
  25  *
  26  */
  27 public class BrowserSearcher {
  28         private static boolean cancelled;
  29         private BrowserSearcher() {
  30                 super();
  31         }
  32
  33         /**
  34          * Search for installed VMs in the file system
  35          */
  36         protected static List search(Shell shell) {
  37                 final List foundBrowsers = new ArrayList();
  38                 final List existingPaths = WebBrowserUtil.getExternalBrowserPaths();
  39
  40                 // select a target directory for the search
  41                 DirectoryDialog dialog = new DirectoryDialog(shell);
  42                 dialog.setMessage(WebBrowserUIPlugin.getResource("%selectDirectory"));
  43                 dialog.setText(WebBrowserUIPlugin.getResource("%directoryDialogTitle"));
  44
  45                 String path = dialog.open();
  46                 if (path == null)
  47                         return null;
  48
  49                 cancelled = false;
  50
  51                 final File rootDir = new File(path);
  52                 ProgressMonitorDialog pm = new ProgressMonitorDialog(shell);
  53
  54                 IRunnableWithProgress r = new IRunnableWithProgress() {
  55                         public void run(IProgressMonitor monitor) {
  56                                 monitor.beginTask(
  57                                         WebBrowserUIPlugin.getResource("%searchingTaskName"),
  58                                         IProgressMonitor.UNKNOWN);
  59                                 search(rootDir, existingPaths, foundBrowsers, monitor);
  60                                 monitor.done();
  61                                 if (monitor.isCanceled())
  62                                         setCancelled(true);
  63                         }
  64                 };
  65
  66                 try {
  67                         pm.run(true, true, r);
  68                 } catch (InvocationTargetException e) {
  69                         Trace.trace(Trace.SEVERE, "Invocation Exception occured running monitor: " + e);
  70                 } catch (InterruptedException e) {
  71                         Trace.trace(Trace.SEVERE, "Interrupted exception occured running monitor: " + e);
  72                         return null;
  73                 }
  74
  75                 if (cancelled)
  76                         return null;
  77
  78                 return foundBrowsers;
  79         }
  80
  81         protected static void setCancelled(boolean b) {
  82                 cancelled = b;
  83         }
  84
  85         protected static void search(File directory, List existingPaths, List foundBrowsers, IProgressMonitor monitor) {
  86                 if (monitor.isCanceled())
  87                         return;
  88
  89                 String[] names = directory.list();
  90                 List subDirs = new ArrayList();
  91
  92                 for (int i = 0; i < names.length; i++) {
  93                         if (monitor.isCanceled())
  94                                 return;
  95
  96                         File file = new File(directory, names[i]);
  97
  98                         if (existingPaths.contains(file.getAbsolutePath().toLowerCase()))
  99                                 continue;
 100
 101                         IExternalWebBrowserWorkingCopy wc = WebBrowserUtil.createExternalBrowser(file);
 102                         if (wc != null)
 103                                 foundBrowsers.add(wc);
 104
 105                         try {
 106                                 monitor.subTask(
 107                                         MessageFormat.format(WebBrowserUIPlugin.getResource("%searching"),
 108                                                 new String[] { Integer.toString(foundBrowsers.size()), file.getCanonicalPath()}));
 109                         } catch (IOException ioe) {
 110                         }
 111
 112                         if (file.isDirectory()) {
 113                                 if (monitor.isCanceled())
 114                                         return;
 115                                 subDirs.add(file);
 116                         }
 117                 }
 118                 while (!subDirs.isEmpty()) {
 119                         File subDir = (File) subDirs.remove(0);
 120                         search(subDir, existingPaths, foundBrowsers, monitor);
 121                         if (monitor.isCanceled()) {
 122                                 return;
 123                         }
 124                 }
 125         }
 126 }