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

   1 package net.sourceforge.phpeclipse.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
  19 import net.sourceforge.phpeclipse.webbrowser.IExternalWebBrowserWorkingCopy;
  20
  21 import org.eclipse.core.runtime.IProgressMonitor;
  22 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
  23 import org.eclipse.jface.operation.IRunnableWithProgress;
  24 import org.eclipse.swt.widgets.DirectoryDialog;
  25 import org.eclipse.swt.widgets.Shell;
  26 /**
  27  *
  28  */
  29 public class BrowserSearcher {
  30         private static boolean cancelled;
  31         private BrowserSearcher() {
  32                 super();
  33         }
  34
  35         /**
  36          * Search for installed VMs in the file system
  37          */
  38         protected static List search(Shell shell) {
  39                 final List foundBrowsers = new ArrayList();
  40                 final List existingPaths = WebBrowserUtil.getExternalBrowserPaths();
  41
  42                 // select a target directory for the search
  43                 DirectoryDialog dialog = new DirectoryDialog(shell);
  44                 dialog.setMessage(WebBrowserUIPlugin.getResource("%selectDirectory"));
  45                 dialog.setText(WebBrowserUIPlugin.getResource("%directoryDialogTitle"));
  46
  47                 String path = dialog.open();
  48                 if (path == null)
  49                         return null;
  50
  51                 cancelled = false;
  52
  53                 final File rootDir = new File(path);
  54                 ProgressMonitorDialog pm = new ProgressMonitorDialog(shell);
  55
  56                 IRunnableWithProgress r = new IRunnableWithProgress() {
  57                         public void run(IProgressMonitor monitor) {
  58                                 monitor.beginTask(
  59                                         WebBrowserUIPlugin.getResource("%searchingTaskName"),
  60                                         IProgressMonitor.UNKNOWN);
  61                                 search(rootDir, existingPaths, foundBrowsers, monitor);
  62                                 monitor.done();
  63                                 if (monitor.isCanceled())
  64                                         setCancelled(true);
  65                         }
  66                 };
  67
  68                 try {
  69                         pm.run(true, true, r);
  70                 } catch (InvocationTargetException e) {
  71                         Trace.trace(Trace.SEVERE, "Invocation Exception occured running monitor: " + e);
  72                 } catch (InterruptedException e) {
  73                         Trace.trace(Trace.SEVERE, "Interrupted exception occured running monitor: " + e);
  74                         return null;
  75                 }
  76
  77                 if (cancelled)
  78                         return null;
  79
  80                 return foundBrowsers;
  81         }
  82
  83         protected static void setCancelled(boolean b) {
  84                 cancelled = b;
  85         }
  86
  87         protected static void search(File directory, List existingPaths, List foundBrowsers, IProgressMonitor monitor) {
  88                 if (monitor.isCanceled())
  89                         return;
  90
  91                 String[] names = directory.list();
  92                 List subDirs = new ArrayList();
  93
  94                 for (int i = 0; i < names.length; i++) {
  95                         if (monitor.isCanceled())
  96                                 return;
  97
  98                         File file = new File(directory, names[i]);
  99
 100                         if (existingPaths.contains(file.getAbsolutePath().toLowerCase()))
 101                                 continue;
 102
 103                         IExternalWebBrowserWorkingCopy wc = WebBrowserUtil.createExternalBrowser(file);
 104                         if (wc != null)
 105                                 foundBrowsers.add(wc);
 106
 107                         try {
 108                                 monitor.subTask(
 109                                         MessageFormat.format(WebBrowserUIPlugin.getResource("%searching"),
 110                                                 new String[] { Integer.toString(foundBrowsers.size()), file.getCanonicalPath()}));
 111                         } catch (IOException ioe) {
 112                         }
 113
 114                         if (file.isDirectory()) {
 115                                 if (monitor.isCanceled())
 116                                         return;
 117                                 subDirs.add(file);
 118                         }
 119                 }
 120                 while (!subDirs.isEmpty()) {
 121                         File subDir = (File) subDirs.remove(0);
 122                         search(subDir, existingPaths, foundBrowsers, monitor);
 123                         if (monitor.isCanceled()) {
 124                                 return;
 125                         }
 126                 }
 127         }
 128 }