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

   1 package net.sourceforge.phpeclipse.webbrowser.internal;
   2
   3 /**********************************************************************
   4  * Copyright (c) 2003 IBM Corporation and others.
   5  * All rights reserved. This program and the accompanying materials
   6  * are made available under the terms of the Common Public License v1.0
   7  * which accompanies this distribution, and is available at
   8  * http://www.eclipse.org/legal/cpl-v10.html
   9  �*
  10  * Contributors:
  11  *    IBM - Initial API and implementation
  12  **********************************************************************/
  13 import java.io.File;
  14 import java.io.IOException;
  15 import java.lang.reflect.InvocationTargetException;
  16 import java.text.MessageFormat;
  17 import java.util.ArrayList;
  18 import java.util.List;
  19
  20 import net.sourceforge.phpeclipse.webbrowser.IExternalWebBrowserWorkingCopy;
  21
  22 import org.eclipse.core.runtime.IProgressMonitor;
  23 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
  24 import org.eclipse.jface.operation.IRunnableWithProgress;
  25 import org.eclipse.swt.widgets.DirectoryDialog;
  26 import org.eclipse.swt.widgets.Shell;
  27
  28 /**
  29  *
  30  */
  31 public class BrowserSearcher {
  32         private static boolean cancelled;
  33
  34         private BrowserSearcher() {
  35                 super();
  36         }
  37
  38         /**
  39          * Search for installed VMs in the file system
  40          */
  41         protected static List search(Shell shell) {
  42                 final List foundBrowsers = new ArrayList();
  43                 final List existingPaths = WebBrowserUtil.getExternalBrowserPaths();
  44
  45                 // select a target directory for the search
  46                 DirectoryDialog dialog = new DirectoryDialog(shell);
  47                 dialog.setMessage(WebBrowserUIPlugin.getResource("%selectDirectory"));
  48                 dialog.setText(WebBrowserUIPlugin.getResource("%directoryDialogTitle"));
  49
  50                 String path = dialog.open();
  51                 if (path == null)
  52                         return null;
  53
  54                 cancelled = false;
  55
  56                 final File rootDir = new File(path);
  57                 ProgressMonitorDialog pm = new ProgressMonitorDialog(shell);
  58
  59                 IRunnableWithProgress r = new IRunnableWithProgress() {
  60                         public void run(IProgressMonitor monitor) {
  61                                 monitor.beginTask(WebBrowserUIPlugin
  62                                                 .getResource("%searchingTaskName"),
  63                                                 IProgressMonitor.UNKNOWN);
  64                                 search(rootDir, existingPaths, foundBrowsers, monitor);
  65                                 monitor.done();
  66                                 if (monitor.isCanceled())
  67                                         setCancelled(true);
  68                         }
  69                 };
  70
  71                 try {
  72                         pm.run(true, true, r);
  73                 } catch (InvocationTargetException e) {
  74                         Trace.trace(Trace.SEVERE,
  75                                         "Invocation Exception occured running monitor: " + e);
  76                 } catch (InterruptedException e) {
  77                         Trace.trace(Trace.SEVERE,
  78                                         "Interrupted exception occured running monitor: " + e);
  79                         return null;
  80                 }
  81
  82                 if (cancelled)
  83                         return null;
  84
  85                 return foundBrowsers;
  86         }
  87
  88         protected static void setCancelled(boolean b) {
  89                 cancelled = b;
  90         }
  91
  92         protected static void search(File directory, List existingPaths,
  93                         List foundBrowsers, IProgressMonitor monitor) {
  94                 if (monitor.isCanceled())
  95                         return;
  96
  97                 String[] names = directory.list();
  98                 List subDirs = new ArrayList();
  99
 100                 for (int i = 0; i < names.length; i++) {
 101                         if (monitor.isCanceled())
 102                                 return;
 103
 104                         File file = new File(directory, names[i]);
 105
 106                         if (existingPaths.contains(file.getAbsolutePath().toLowerCase()))
 107                                 continue;
 108
 109                         IExternalWebBrowserWorkingCopy wc = WebBrowserUtil
 110                                         .createExternalBrowser(file);
 111                         if (wc != null)
 112                                 foundBrowsers.add(wc);
 113
 114                         try {
 115                                 monitor.subTask(MessageFormat.format(WebBrowserUIPlugin
 116                                                 .getResource("%searching"), new String[] {
 117                                                 Integer.toString(foundBrowsers.size()),
 118                                                 file.getCanonicalPath() }));
 119                         } catch (IOException ioe) {
 120                         }
 121
 122                         if (file.isDirectory()) {
 123                                 if (monitor.isCanceled())
 124                                         return;
 125                                 subDirs.add(file);
 126                         }
 127                 }
 128                 while (!subDirs.isEmpty()) {
 129                         File subDir = (File) subDirs.remove(0);
 130                         search(subDir, existingPaths, foundBrowsers, monitor);
 131                         if (monitor.isCanceled()) {
 132                                 return;
 133                         }
 134                 }
 135         }
 136 }