Util/Vfs.cs

   1 /*
   2  * Vfs.cs (from MonoTagEditor)
   3  *
   4  * Copyright (C) 2003, Mariano Cano Pérez <mariano.cano@hispalinux.es>
   5  *
   6  * Redistribution and use in source and binary forms, with or without modification,
   7  * are permitted provided that the following conditions are met:
   8  *
   9  *   1.Redistributions of source code must retain the above copyright notice, this
  10  *     list of conditions and the following disclaimer.
  11  *   2.Redistributions in binary form must reproduce the above copyright notice, this
  12  *     list of conditions and the following disclaimer in the documentation and/or other
  13  *     materials provided with the distribution.
  14  *   3.The name of the author may not be used to endorse or promote products derived
  15  *     from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  20  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  23  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  24  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 using System;
  28 using Gtk;
  29 using GLib;
  30 using System.Runtime.InteropServices;
  31
  32 namespace Beagle.Util {
  33
  34 public enum GnomeVFSMimeApplicationArgumentType
  35 {
  36         Uris,
  37         Path,
  38         UrisForNonFiles
  39 }
  40
  41 [StructLayout(LayoutKind.Sequential)]
  42 public struct GnomeVFSMimeApplication
  43 {
  44         public string id;
  45         public string name;
  46         public string command;
  47         public bool can_open_multiple_files;
  48         public GnomeVFSMimeApplicationArgumentType expects_uris;
  49         //public List supported_uri_schemes;
  50         private IntPtr supported_uri_schemes;
  51         public bool requires_terminal;
  52
  53         public IntPtr reserved1;
  54         public IntPtr reserved2;
  55
  56         public static GnomeVFSMimeApplication Zero = new GnomeVFSMimeApplication ();
  57
  58         public static GnomeVFSMimeApplication New (IntPtr raw)
  59         {
  60                 if(raw == IntPtr.Zero)
  61                 {
  62                         return GnomeVFSMimeApplication.Zero;
  63                 }
  64                 GnomeVFSMimeApplication self = new GnomeVFSMimeApplication();
  65                 self = (GnomeVFSMimeApplication) Marshal.PtrToStructure (raw, self.GetType ());
  66                 return self;
  67         }
  68
  69         //Fixme: Create the supported uri schemes struct
  70         public List SupportedUriSchemes {
  71                 get {
  72                         List list = new List (supported_uri_schemes);
  73                         return list;
  74                 }
  75         }
  76
  77         public static bool operator == (GnomeVFSMimeApplication a, GnomeVFSMimeApplication b)
  78         {
  79                 return a.Equals (b);
  80         }
  81
  82         public static bool operator != (GnomeVFSMimeApplication a, GnomeVFSMimeApplication b)
  83         {
  84                 return ! a.Equals (b);
  85         }
  86
  87         public override bool Equals (object o)
  88         {
  89                 //if (!(o is GnomeVFSMimeApplication))
  90                 //       return false;
  91                 return base.Equals(o)  ;
  92         }
  93
  94         public override int GetHashCode ()
  95         {
  96                 return base.GetHashCode ();
  97         }
  98 }
  99
 100 public enum GnomeIconLookupFlags
 101 {
 102         None,
 103         EmbeddingText,
 104         SmallImages
 105 }
 106
 107 public enum GnomeIconLookupResultsFlags
 108 {
 109         None,
 110         Thumbnail
 111 }
 112
 113 public class GnomeIconLookup{
 114
 115         [DllImport("libgnomeui-2")]
 116         static extern IntPtr gnome_icon_lookup (IntPtr icon_theme,
 117                                                 IntPtr thumbnail_factory,
 118                                                 string uri,
 119                                                 string custim_icon,
 120                                                 IntPtr file_info,
 121                                                 string mime_type,
 122                                                 GnomeIconLookupFlags flags,
 123                                                 ref GnomeIconLookupResultsFlags result);
 124         [DllImport("libgnomeui-2")]
 125         static extern IntPtr gnome_icon_theme_lookup_icon (IntPtr icon_theme,
 126                                                 string icon_name,
 127                                                 IconSize icon_size,
 128                                                 ref IntPtr icon_data,
 129                                                 ref int base_size);
 130
 131         [DllImport("libgnomeui-2")]
 132         static extern void gnome_icon_data_free (IntPtr icon_data);
 133
 134         [DllImport("libgnomeui-2")]
 135         static extern IntPtr gnome_icon_theme_new ();
 136
 137         [DllImport("libgnomevfs-2")]
 138         static extern IntPtr gnome_vfs_mime_type_from_name (string mime_type);
 139
 140         [DllImport("libgnomevfs-2")]
 141         static extern IntPtr gnome_vfs_get_file_mime_type (string filename,
 142                                                            IntPtr optional_stat_info,
 143                                                            bool suffix_only);
 144
 145         [DllImport("libgnomevfs-2")]
 146         static extern IntPtr gnome_vfs_application_registry_get_applications(string mime_type);
 147
 148         [DllImport("libgnomevfs-2")]
 149         static extern IntPtr gnome_vfs_mime_get_default_application(string mime_type);
 150
 151         static IntPtr icon_theme = IntPtr.Zero;
 152
 153         public static string LookupMimeIcon(string mime,IconSize size)
 154         {
 155                 string icon_name=String.Empty;
 156                 string icon_path=String.Empty;
 157                 GnomeIconLookupResultsFlags result=0;
 158                 IntPtr icon_data=IntPtr.Zero;
 159                 int base_size=0;
 160
 161                 if (icon_theme == IntPtr.Zero) {
 162                         icon_theme = gnome_icon_theme_new ();
 163                 }
 164
 165                 if(icon_theme==IntPtr.Zero)
 166                 {
 167                         return String.Empty;
 168                 }
 169
 170                 icon_name=GLib.Marshaller.PtrToStringGFree (gnome_icon_lookup(
 171                         icon_theme,
 172                         IntPtr.Zero,
 173                         String.Empty,
 174                         String.Empty,
 175                         IntPtr.Zero,
 176                         mime,
 177                         GnomeIconLookupFlags.None,
 178                         ref result));
 179
 180                 if(icon_name.Length>0)
 181                 {
 182                         icon_path=GLib.Marshaller.PtrToStringGFree (gnome_icon_theme_lookup_icon (
 183                                 icon_theme,
 184                                 icon_name,
 185                                 size,
 186                                 ref icon_data,
 187                                 ref base_size));
 188                 }
 189                 return icon_path;
 190         }
 191
 192         public static string LookupFileIcon(string file,IconSize size)
 193         {
 194                 string mime = Marshal.PtrToStringAnsi (gnome_vfs_mime_type_from_name(file));
 195
 196                 if(mime.Length>0)
 197                         return LookupMimeIcon(mime,size);
 198
 199                 return String.Empty;
 200         }
 201
 202         public static string GetMimeType(string file)
 203         {
 204                 return Marshal.PtrToStringAnsi (gnome_vfs_mime_type_from_name(file));
 205         }
 206
 207         public static string GetFileMimeType (string file)
 208         {
 209                 return Marshal.PtrToStringAnsi (gnome_vfs_get_file_mime_type (file, (IntPtr)null, false));
 210         }
 211
 212         public static GLib.List GetApplications(string mime_type)
 213         {
 214                 IntPtr raw_ret = gnome_vfs_application_registry_get_applications(mime_type);
 215                 GLib.List app = new GLib.List(raw_ret);
 216                 return app;
 217         }
 218
 219         public static GnomeVFSMimeApplication GetDefaultAction(string mime_type)
 220         {
 221                 IntPtr ptr = gnome_vfs_mime_get_default_application(mime_type);
 222                 GnomeVFSMimeApplication ret = GnomeVFSMimeApplication.New(ptr);
 223                 return ret;
 224         }
 225 }
 226
 227 }