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Viewing changes to File/src/Do.FilesAndFolders/FileItemSource.cs

  • Committer: David Siegel
  • Date: 2008-12-23 22:55:20 UTC
  • Revision ID: david@david-desktop-20081223225520-fqdedh21xtm635wl
Update File plugin (had to replace files, merge was very difficult).

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File/src/Do.FilesAndFolders/FileItemSource.cs
 
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/* FileItemSource.cs
 
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 *
 
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 * GNOME Do is the legal property of its developers. Please refer to the
 
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 * COPYRIGHT file distributed with this
 
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 * source distribution.
 
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 *
 
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 * This program is free software: you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation, either version 3 of the License, or
 
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 * (at your option) any later version.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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 */
 
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using System;
 
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using System.IO;
 
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using System.Linq;
 
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using System.Collections.Generic;
 
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using Mono.Unix;
 
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using Do.Universe;
 
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using Do.Platform;
 
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namespace Do.FilesAndFolders {
 
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        /// <summary>
 
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        /// Indexes files recursively starting in a specific directory.
 
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        /// </summary>
 
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        public class FileItemSource : ItemSource, IConfigurable {
 
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                public IEnumerable<IItem> Items { get; protected set; }
 
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                public FileItemSource ()
 
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                {
 
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                        Items = Enumerable.Empty<IItem> ();
 
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                }
 
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                public Gtk.Bin GetConfiguration ()
 
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                {
 
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                        return new Configuration ();
 
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                }
 
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                public override IEnumerable<Type> SupportedItemTypes {
 
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                        get {
 
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                                yield return typeof (IFileItem);
 
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                                yield return typeof (ITextItem);
 
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                                yield return typeof (IApplicationItem);
 
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                        }
 
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                }
 
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                public override string Name {
 
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                        get { return Catalog.GetString ("File Indexer"); }
 
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                }
 
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                public override string Description {
 
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                        get {
 
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                                return Catalog.GetString ("Frequently used files and folders.");
 
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                        }
 
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                }
 
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                public override string Icon {
 
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                        get { return "folder"; }
 
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                }
 
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                public override IEnumerable<IItem> ChildrenOfItem (IItem item)
 
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                {
 
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                        IFileItem file = null;
 
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                        if (item is ITextItem)
 
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                                file = Services.UniverseFactory.NewFileItem ((item as ITextItem).Text);
 
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                        else if (item is IFileItem)
 
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                                file = item as IFileItem;
 
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                        else if (item is IApplicationItem)
 
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                                return Enumerable.Empty<IItem> ();
 
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                        return RecursiveGetFileItems (file.Path, 0).Cast<IItem> ();
 
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                }
 
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                public void UpdateItems ()
 
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                {
 
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                        Items = Plugin.FolderIndex
 
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                                .SelectMany (folder => RecursiveGetFileItems (folder.Path, folder.Level))
 
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                                .Take (Plugin.Preferences.MaximumFilesIndexed)
 
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                                .ToArray ();
 
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                }
 
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                static IEnumerable<IFileItem> RecursiveGetFileItems (string path, int levels)
 
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                {
 
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                        return RecursiveListFiles (path, levels)
 
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                                .Select (filepath => Services.UniverseFactory.NewFileItem (filepath));
 
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                }
 
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                static IEnumerable<string> RecursiveListFiles (string path, int levels)
 
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                {
 
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                        IEnumerable<string> results = null;
 
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                        if (path == null) throw new ArgumentNullException ("path");
 
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                        if (levels < 0 || !Directory.Exists (path))
 
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                                return Enumerable.Empty<string> ();
 
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                        try {
 
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                                IEnumerable<string> files, directories, recursiveFiles;
 
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                                files = Directory.GetFiles (path).Where (ShouldIndexFile);
 
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                                directories = Directory.GetDirectories (path).Where (ShouldIndexFile);
 
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                                recursiveFiles = directories.SelectMany (dir => RecursiveListFiles (dir, levels - 1));
 
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                                results = files.Concat (directories).Concat (recursiveFiles);
 
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                        } catch (Exception e) {
 
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                                Log.Error ("Encountered an error while attempting to index {0}: {1}", path, e.Message);
 
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                                Log.Debug (e.StackTrace);
 
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                                results = Enumerable.Empty<string> ();
 
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                        }
 
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                        return results;
 
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                }
 
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                static bool ShouldIndexFile (string path)
 
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                {
 
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                        string filename = Path.GetFileName (path);
 
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                        return filename != "." && filename != ".." &&
 
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                                (Plugin.Preferences.IncludeHiddenFiles || !filename.StartsWith ("."));
 
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                }
 
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        }
 
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}