2007-01-07 Jonathan Pobst <monkey@jpobst.com>
[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / MimeIcon.cs
index 80300a1f73ef47179e02cf8dc68e0b5c0f249993..395a1caa127da0d8146af5a95634bd652d076677 100644 (file)
 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
-// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2006 Alexander Olk
 //
 // Authors:
 //
-//  Alexander Olk      xenomorph2@onlinehome.de
+//  Alexander Olk      alex.olk@googlemail.com
 //
 
-// short "how to" if you want to add an other platform handler, etc:
-// - first add mime type names and icon names (best is without extension) to MimeIconEngine, for example:
-//   MimeIconEngine.AddMimeTypeAndIconName( "inode/directory", "gnome-fs-directory" );
-// - next add the icon name (the same as used in AddMimeTypeAndIconName) and the full filename, for example:
-//   MimeIconEngine.AddIcon( "gnome-fs-directory", "/opt/gnome/share/icons/gnome/48x48/filesystems/gnome-fs-directory.png" );
-//   AddIcon adds the icon to the image lists SmallIconList and LargeIconList
-// - provide always a "unknown/unknown" 'mime type' with a default icon for unkown mime types,
-//   "desktop/desktop" 'mime type' for the desktop icon, "directory/home" 'mime type for the home dir of the user and so on
-//   (look at the default platform handler)
-//
 // use
 // public static int GetIconIndexForFile( string full_filename )
 // public static int GetIconIndexForMimeType( string mime_type )
 // to get the image index in MimeIconEngine.SmallIcons and MimeIconEngine.LargeIcons
-// use
-// public static Image GetIconForMimeTypeAndSize( string mime_type, Size size )
-// to get the image itself for a mime type with a specific size
 
 using System;
+using System.Reflection;
 using System.Drawing;
 using System.Collections;
-using System.Collections.Specialized;
 using System.IO;
 using System.Text;
+using System.Runtime.InteropServices;
+using System.Xml;
 
 namespace System.Windows.Forms
 {
        internal enum MimeExtensionHandlerStatus
        {
                OK,
-               NO_KDEGLOBALS,
-               NO_GNOMECONFIG,
-               NO_ICONS,
-               NO_MIMELNK
+               ERROR
        }
        
        internal enum EPlatformHandler
        {
                Default,
-               KDE,
                GNOME
-               // Win, Mac OSX...
+       }
+       
+       internal class ResourceImageLoader
+       {
+               static Assembly assembly = typeof (ResourceImageLoader).Assembly;
+               
+               static internal Bitmap Get (string name)
+               {
+                       using (Stream stream = assembly.GetManifestResourceStream (name)) {
+                               if (stream == null) {
+                                       Console.WriteLine ("Failed to read {0}", name);
+                                       return null;
+                               }
+                               
+                               return new Bitmap (stream);
+                       }
+               }
        }
        
        internal class MimeIconEngine
@@ -73,274 +74,169 @@ namespace System.Windows.Forms
                public static ImageList SmallIcons = new ImageList();
                public static ImageList LargeIcons = new ImageList();
                
-               private static PlatformMimeIconHandler platformMimeHandler = null;
-               
                private static EPlatformHandler platform = EPlatformHandler.Default;
                
-               private static Hashtable MimeTypeIconIndexHash = new Hashtable();
+               internal static Hashtable MimeIconIndex = new Hashtable ();
                
-               private static NameValueCollection IconNameMimeTypeNameValueCollection = new NameValueCollection();
-               
-               private static StringCollection added_icons = new StringCollection();
+               private static PlatformMimeIconHandler platformMimeHandler = null;
                
                private static object lock_object = new Object();
                
-               static MimeIconEngine)
+               static MimeIconEngine ()
                {
-                       // add some more aliases, kde for example uses other mime type names for some mime types...
-                       MimeGenerated.Aliases.Add( "application/x-compressed-tar", "application/x-tgz" );
-                       MimeGenerated.Aliases.Add( "application/x-bzip-compressed-tar", "application/x-tbz" );
-                       MimeGenerated.Aliases.Add( "application/zip", "application/x-zip" );
-                       MimeGenerated.Aliases.Add( "text/x-patch", "text/x-diff" );
-                       
                        SmallIcons.ColorDepth = ColorDepth.Depth32Bit;
                        SmallIcons.TransparentColor = Color.Transparent;
                        LargeIcons.ColorDepth = ColorDepth.Depth32Bit;
                        LargeIcons.TransparentColor = Color.Transparent;
                        
-                       string session =  Environment.GetEnvironmentVariable( "DESKTOP_SESSION" );
+                       string session =  Environment.GetEnvironmentVariable ("DESKTOP_SESSION");
                        
-                       if ( session != null )
-                       {
-                               session = session.ToUpper( );
+                       if (session != null) {
+                               session = session.ToUpper ();
                                
-                               if ( session == "DEFAULT" )
-                               {
-                                       string helper = Environment.GetEnvironmentVariable( "KDE_FULL_SESSION" );
+                               if (session == "DEFAULT") {
+                                       string helper = Environment.GetEnvironmentVariable ("GNOME_DESKTOP_SESSION_ID");
                                        
-                                       if ( helper != null )
-                                               session = "KDE";
-                                       else
-                                       {
-                                               helper = Environment.GetEnvironmentVariable( "GNOME_DESKTOP_SESSION_ID" );
-                                               
-                                               if ( helper != null )
-                                                       session = "GNOME";
-                                       }
+                                       if (helper != null)
+                                               session = "GNOME";
                                }
-                       }
-                       else
-                               session = "";
-                       
-                       Console.WriteLine( "Desktop session is: " + session );
+                       } else
+                               session = String.Empty;
                        
-                       if ( session == "KDE" )
-                       {
-                               SmallIcons.ImageSize = new Size( 24, 24 );
-                               LargeIcons.ImageSize = new Size( 48, 48 );
+                       if (Mime.MimeAvailable && session == "GNOME") {
+                               SmallIcons.ImageSize = new Size (24, 24);
+                               LargeIcons.ImageSize = new Size (48, 48);
                                
-                               platformMimeHandler = new KdeHandler( );
-                               if ( platformMimeHandler.Start( ) == MimeExtensionHandlerStatus.OK )
-                               {
-                                       Console.WriteLine( "Kde icons ready..." );
-                                       platform = EPlatformHandler.KDE;
-                               }
-                               else // fallback to default
-                               {
-                                       MimeIconEngine.LargeIcons.Images.Clear( );
-                                       MimeIconEngine.SmallIcons.Images.Clear( );
-                                       platformMimeHandler = new PlatformDefaultHandler( );
-                                       platformMimeHandler.Start( );
-                               }
-                       }
-                       else
-                       if ( session == "GNOME" )
-                       {
-                               SmallIcons.ImageSize = new Size( 24, 24 );
-                               LargeIcons.ImageSize = new Size( 48, 48 );
-                               
-                               platformMimeHandler = new GnomeHandler( );
-                               if ( platformMimeHandler.Start( ) == MimeExtensionHandlerStatus.OK )
-                               {
-                                       Console.WriteLine( "Gnome icons ready..." );
+                               platformMimeHandler = new GnomeHandler ();
+                               if (platformMimeHandler.Start () == MimeExtensionHandlerStatus.OK) {
                                        platform = EPlatformHandler.GNOME;
+                               } else {
+                                       MimeIconEngine.LargeIcons.Images.Clear ();
+                                       MimeIconEngine.SmallIcons.Images.Clear ();
+                                       platformMimeHandler = new PlatformDefaultHandler ();
+                                       platformMimeHandler.Start ();
                                }
-                               else // fallback to default
-                               {
-                                       MimeIconEngine.LargeIcons.Images.Clear( );
-                                       MimeIconEngine.SmallIcons.Images.Clear( );
-                                       platformMimeHandler = new PlatformDefaultHandler( );
-                                       platformMimeHandler.Start( );
-                               }
-                       }
-                       else
-                       {
-                               SmallIcons.ImageSize = new Size( 16, 16 );
-                               LargeIcons.ImageSize = new Size( 48, 48 );
+                       } else {
+                               SmallIcons.ImageSize = new Size (16, 16);
+                               LargeIcons.ImageSize = new Size (48, 48);
                                
-                               platformMimeHandler = new PlatformDefaultHandler);
-                               platformMimeHandler.Start);
+                               platformMimeHandler = new PlatformDefaultHandler ();
+                               platformMimeHandler.Start ();
                        }
-                       
-                       IconNameMimeTypeNameValueCollection = null;
-                       added_icons = null;
                }
                
-               public static int GetIconIndexForFile( string full_filename )
+               public static int GetIconIndexForFile (string full_filename)
                {
-                       lock ( lock_object )
-                       {
-                               string mime_type = Mime.GetMimeTypeForFile( full_filename );
-                               
-                               if ( platform == EPlatformHandler.Default )
-                               {
-                                       if ( mime_type == "inode/directory" )
-                                       {
-                                               return (int)MimeTypeIconIndexHash[ "inode/directory" ];
-                                       }
-                                       else
-                                       {
-                                               return (int)MimeTypeIconIndexHash[ "unknown/unknown" ];
-                                       }
+                       lock (lock_object) {
+                               if (platform == EPlatformHandler.Default) {
+                                       return (int)MimeIconIndex ["unknown/unknown"];
                                }
                                
-                               object oindex = GetIconIndex( mime_type );
+                               string mime_type = Mime.GetMimeTypeForFile (full_filename);
                                
-                               if ( oindex == null )
-                                       oindex = MimeTypeIconIndexHash[ "unknown/unknown" ];
+                               object oindex = GetIconIndex (mime_type);
+                               
+                               // not found, add it
+                               if (oindex == null) {
+                                       int index = full_filename.IndexOf (':');
+                                       
+                                       if (index > 1) {
+                                               oindex = MimeIconIndex ["unknown/unknown"];
+                                               
+                                       } else {
+                                               oindex = platformMimeHandler.AddAndGetIconIndex (full_filename, mime_type);
+                                               
+                                               // sanity check
+                                               if (oindex == null)
+                                                       oindex = MimeIconIndex ["unknown/unknown"];
+                                       }
+                               }
                                
                                return (int)oindex;
                        }
                }
                
-               public static int GetIconIndexForMimeType( string mime_type )
+               public static int GetIconIndexForMimeType (string mime_type)
                {
-                       lock ( lock_object )
-                       {
-                               if ( platform == EPlatformHandler.Default )
-                               {
-                                       if ( mime_type == "inode/directory" )
-                                       {
-                                               return (int)MimeTypeIconIndexHash[ "inode/directory" ];
-                                       }
-                                       else
-                                       {
-                                               return (int)MimeTypeIconIndexHash[ "unknown/unknown" ];
+                       lock (lock_object) {
+                               if (platform == EPlatformHandler.Default) {
+                                       if (mime_type == "inode/directory") {
+                                               return (int)MimeIconIndex ["inode/directory"];
+                                       } else {
+                                               return (int)MimeIconIndex ["unknown/unknown"];
                                        }
                                }
                                
-                               object oindex = GetIconIndex( mime_type );
+                               object oindex = GetIconIndex (mime_type);
                                
-                               if ( oindex == null )
-                                       oindex = MimeTypeIconIndexHash[ "unknown/unknown" ];
+                               // not found, add it
+                               if (oindex == null) {
+                                       oindex = platformMimeHandler.AddAndGetIconIndex (mime_type);
+                                       
+                                       // sanity check
+                                       if (oindex == null)
+                                               oindex = MimeIconIndex ["unknown/unknown"];
+                               }
                                
                                return (int)oindex;
                        }
                }
                
-               public static Image GetIconForMimeTypeAndSize( string mime_type, Size size )
+               public static Image GetIconForMimeTypeAndSize (string mime_type, Size size)
                {
-                       lock ( lock_object )
-                       {
-                               object oindex = GetIconIndex( mime_type );
+                       lock (lock_object) {
+                               object oindex = GetIconIndex (mime_type);
                                
-                               if ( oindex == null )
-                                       oindex = MimeTypeIconIndexHash[ "unknown/unknown" ];
-                               
-                               Bitmap bmp = new Bitmap( LargeIcons.Images[ (int)oindex ], size );
+                               Bitmap bmp = new Bitmap (LargeIcons.Images [(int)oindex], size);
                                
                                return bmp;
                        }
                }
                
-               internal static void AddIcon( string name, string fullname )
+               internal static void AddIconByImage (string mime_type, Image image)
                {
-                       if ( !CheckIfIconIsNeeded( name ) )
-                               return;
-                       
-                       if ( added_icons.Contains( name ) )
-                               return;
-                       
-                       added_icons.Add( name );
-                       
-                       Bitmap bmp = new Bitmap( fullname );
-                       
-                       int index = SmallIcons.Images.Add( bmp, Color.Transparent );
-                       LargeIcons.Images.Add( bmp, Color.Transparent );
+                       int index = SmallIcons.Images.Add (image, Color.Transparent);
+                       LargeIcons.Images.Add (image, Color.Transparent);
                        
-                       AddMimeTypeIconIndexHash( name, index );
+                       MimeIconIndex.Add (mime_type, index);
                }
                
-               private static bool CheckIfIconIsNeeded( string name )
-               {
-                       string mime_types = IconNameMimeTypeNameValueCollection[ name ];
-                       
-                       if ( mime_types != null )
-                               return true;
-                       
-                       return false;
-               }
-               
-               internal static void AddMimeTypeIconIndexHash( string name, int index )
-               {
-                       string mime_type = IconNameMimeTypeNameValueCollection[ name ];
-                       
-                       if ( mime_type == null )
-                               return;
-                       
-                       string[] split = mime_type.Split( new char[] { ',' } );
-                       
-                       foreach ( string s in split )
-                       {
-                               if ( MimeTypeIconIndexHash.ContainsKey( s ) )
-                                       continue;
-                               
-                               MimeTypeIconIndexHash.Add( s, index );
-                       }
-               }
-               
-               internal static void AddIconByImage( string name, Image image )
-               {
-                       int index = SmallIcons.Images.Add( image, Color.Transparent );
-                       LargeIcons.Images.Add( image, Color.Transparent );
-                       
-                       AddMimeTypeIconIndexHash( name, index );
-               }
-               
-               internal static void AddMimeTypeAndIconName( string mimetype, string iconname )
-               {
-                       if ( iconname.Equals( String.Empty ) )
-                               return;
-                       
-                       IconNameMimeTypeNameValueCollection.Add( iconname, mimetype );
-               }
-               
-               private static object GetIconIndex( string mime_type )
+               private static object GetIconIndex (string mime_type)
                {
                        object oindex = null;
                        
-                       if ( mime_type != null )
-                       {
+                       if (mime_type != null) {
                                // first check if mime_type is available in the mimetype/icon hashtable
-                               oindex = MimeTypeIconIndexHash[ mime_type ];
+                               oindex = MimeIconIndex [mime_type];
                                
-                               if ( oindex == null )
-                               {
+                               if (oindex == null) {
                                        // it is not available, check if an alias exist for mime_type
-                                       string alias = Mime.GetMimeAlias( mime_type );
+                                       string alias = Mime.GetMimeAlias (mime_type);
                                        
-                                       if ( alias != null )
-                                       {
-                                               string[] split = alias.Split( new char[] { ',' } );
+                                       if (alias != null) {
+                                               string[] split = alias.Split (new char [] { ',' });
                                                
-                                               foreach ( string s in split )
-                                               {
-                                                       oindex = MimeTypeIconIndexHash[ s ];
+                                               for (int i = 0; i < split.Length; i++) {
+                                                       oindex = MimeIconIndex [split [i]];
                                                        
-                                                       if ( oindex != null )
+                                                       if (oindex != null)
                                                                return oindex;
                                                }
                                        }
                                        
                                        // if oindex is still null check if mime_type is a sub class of an other mime type
-                                       string sub_class = MimeGenerated.SubClasses[ mime_type ];
+                                       string sub_class = Mime.SubClasses [mime_type];
                                        
-                                       if ( sub_class != null )
-                                               return MimeTypeIconIndexHash[ sub_class ];
+                                       if (sub_class != null) {
+                                               oindex = MimeIconIndex [sub_class];
+                                               
+                                               if (oindex != null)
+                                                       return oindex;
+                                       }
                                        
                                        // last check, see if we find an entry for the main mime type class
-                                       string mime_class_main = mime_type.Substring( 0, mime_type.IndexOf( '/' ) );
-                                       return MimeTypeIconIndexHash[ mime_class_main ];
+                                       string mime_class_main = mime_type.Substring (0, mime_type.IndexOf ('/'));
+                                       return MimeIconIndex [mime_class_main];
                                }
                        }
                        
@@ -350,417 +246,290 @@ namespace System.Windows.Forms
        
        internal abstract class PlatformMimeIconHandler
        {
-               protected StringCollection mime_paths = new StringCollection();
-               
-               protected StringCollection icon_paths = new StringCollection();
-               
-               protected string icon_theme = "";
-               
                protected MimeExtensionHandlerStatus mimeExtensionHandlerStatus = MimeExtensionHandlerStatus.OK;
                
-               public MimeExtensionHandlerStatus MimeExtensionHandlerStatus
-               {
+               public MimeExtensionHandlerStatus MimeExtensionHandlerStatus {
                        get {
                                return mimeExtensionHandlerStatus;
                        }
                }
                
-               public abstract MimeExtensionHandlerStatus Start( );
+               public abstract MimeExtensionHandlerStatus Start ();
+               
+               public virtual object AddAndGetIconIndex (string filename, string mime_type)
+               {
+                       return null;
+               }
                
-               // check, if icon, mime, etc., directories exist
-               protected virtual bool CheckPlatformDirectories( )
+               public virtual object AddAndGetIconIndex (string mime_type)
                {
-                       return true;
+                       return null;
                }
        }
        
        internal class PlatformDefaultHandler : PlatformMimeIconHandler
        {
-               public override MimeExtensionHandlerStatus Start)
+               public override MimeExtensionHandlerStatus Start ()
                {
-                       MimeIconEngine.AddMimeTypeAndIconName( "unknown/unknown", "paper" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "inode/directory", "folder" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "desktop/desktop", "desktop" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "directory/home", "folder_with_paper" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "network/network", "monitor-planet" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "recently/recently", "last_open" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "workplace/workplace", "monitor-computer" );
-                       
-                       MimeIconEngine.AddIconByImage( "folder",  (Image)Locale.GetResource( "folder" ) );
-                       MimeIconEngine.AddIconByImage( "paper",  (Image)Locale.GetResource( "paper" ) );
-                       MimeIconEngine.AddIconByImage( "desktop",  (Image)Locale.GetResource( "desktop" ) );
-                       MimeIconEngine.AddIconByImage( "folder_with_paper",  (Image)Locale.GetResource( "folder_with_paper" ) );
-                       MimeIconEngine.AddIconByImage( "monitor-planet",  (Image)Locale.GetResource( "monitor-planet" ) );
-                       MimeIconEngine.AddIconByImage( "last_open",  (Image)Locale.GetResource( "last_open" ) );
-                       MimeIconEngine.AddIconByImage( "monitor-computer",  (Image)Locale.GetResource( "monitor-computer" ) );
+                       MimeIconEngine.AddIconByImage ("inode/directory",  ResourceImageLoader.Get ("folder.png"));
+                       MimeIconEngine.AddIconByImage ("unknown/unknown",  ResourceImageLoader.Get ("text-x-generic.png"));
+                       MimeIconEngine.AddIconByImage ("desktop/desktop",  ResourceImageLoader.Get ("user-desktop.png"));
+                       MimeIconEngine.AddIconByImage ("directory/home",  ResourceImageLoader.Get ("user-home.png"));
+                       
+                       MimeIconEngine.AddIconByImage ("network/network",  ResourceImageLoader.Get ("folder-remote.png"));
+                       MimeIconEngine.AddIconByImage ("recently/recently",  ResourceImageLoader.Get ("document-open.png"));
+                       MimeIconEngine.AddIconByImage ("workplace/workplace",  ResourceImageLoader.Get ("computer.png"));
                        
                        return MimeExtensionHandlerStatus.OK; // return always ok
                }
        }
        
-       internal class KdeHandler : PlatformMimeIconHandler
+       internal class GnomeHandler : PlatformMimeIconHandler
        {
-               string full_kdegloabals_filename = Environment.GetFolderPath( Environment.SpecialFolder.Personal )
-               + "/"
-               + ".kde/share/config/kdeglobals";
-               
-               public override MimeExtensionHandlerStatus Start( )
+               public override MimeExtensionHandlerStatus Start ()
                {
-                       if ( !ReadKdeglobals( ) )
-                               return mimeExtensionHandlerStatus;
-                       
-                       if ( !CheckPlatformDirectories( ) )
-                               return mimeExtensionHandlerStatus;
-                       
-                       // check if the theme is svg only
-                       // if true, use theme "default.kde"
-                       // don't know if that is available in every linux distribution
-                       // MWF has no svg support yet (cairo's libsvg!?!)
-                       if ( SVGOnly( ) )
-                               icon_theme = "default.kde";
-                       else
-                       // check if there is a /48x48 directory
-                       if( No48x48( ) )
-                               icon_theme = "default.kde";
+                       CreateUIIcons ();
                        
-                       ReadMimetypes( );
-                       
-                       ReadIcons( );
-                       
-                       return mimeExtensionHandlerStatus;
+                       return MimeExtensionHandlerStatus.OK;
                }
                
-               private bool SVGOnly( )
+               private void CreateUIIcons ()
                {
-                       // check only the first path in icon_paths
-                       if ( icon_paths.Count > 0 )
-                       {
-                               string icon_path = icon_paths[ 0 ] + icon_theme;
-                               string[] dirs = Directory.GetDirectories( icon_path );
-                               
-                               if ( dirs.Length == 1 && dirs[ 0 ] == "scalable" )
-                                       return true;
-                       }
-                       
-                       return false;
+                       AddGnomeIcon ("unknown/unknown", "gnome-fs-regular");
+                       AddGnomeIcon ("inode/directory", "gnome-fs-directory");
+                       AddGnomeIcon ("directory/home", "gnome-fs-home");
+                       AddGnomeIcon ("desktop/desktop", "gnome-fs-desktop");
+                       AddGnomeIcon ("recently/recently", "gnome-fs-directory-accept");
+                       AddGnomeIcon ("workplace/workplace", "gnome-fs-client");
+                       
+                       AddGnomeIcon ("network/network", "gnome-fs-network");
+                       AddGnomeIcon ("nfs/nfs", "gnome-fs-nfs");
+                       AddGnomeIcon ("smb/smb", "gnome-fs-smb");
+                       
+                       AddGnomeIcon ("harddisk/harddisk", "gnome-dev-harddisk");
+                       AddGnomeIcon ("cdrom/cdrom", "gnome-dev-cdrom");
+                       AddGnomeIcon ("removable/removable", "gnome-dev-removable");
                }
                
-               private bool No48x48( )
+               private void AddGnomeIcon (string internal_mime_type, string name)
                {
-                       // check only the first path in icon_paths
-                       if ( icon_paths.Count > 0 )
-                       {
-                               string icon_path = icon_paths[ 0 ] + icon_theme;
-                               string[] dirs = Directory.GetDirectories( icon_path );
-                               
-                               foreach( string path in dirs )
-                               {
-                                       if ( path.EndsWith( "48x48" ) )
-                                               return false;
-                               }
+                       int index = -1;
+                       
+                       if (MimeIconEngine.MimeIconIndex.ContainsKey (internal_mime_type)) {
+                               return;
                        }
                        
-                       return true;
+                       Image image = GnomeUtil.GetIcon (name, 48);
+                       
+                       if (image == null) {
+                               if (internal_mime_type == "unknown/unknown")
+                                       image = ResourceImageLoader.Get ("text-x-generic.png");
+                               else
+                               if (internal_mime_type == "inode/directory")
+                                       image = ResourceImageLoader.Get ("folder.png");
+                               else
+                               if (internal_mime_type == "directory/home")
+                                       image = ResourceImageLoader.Get ("user-home.png");
+                               else
+                               if (internal_mime_type == "desktop/desktop")
+                                       image = ResourceImageLoader.Get ("user-desktop.png");
+                               else
+                               if (internal_mime_type == "recently/recently")
+                                       image = ResourceImageLoader.Get ("document-open.png");
+                               else
+                               if (internal_mime_type == "workplace/workplace")
+                                       image = ResourceImageLoader.Get ("computer.png");
+                               else
+                               if (internal_mime_type == "network/network" || internal_mime_type == "nfs/nfs" || internal_mime_type == "smb/smb")
+                                       image = ResourceImageLoader.Get ("folder-remote.png");
+                               else
+                               if (internal_mime_type == "harddisk/harddisk" || internal_mime_type == "cdrom/cdrom" || internal_mime_type == "removable/removable")
+                                       image = ResourceImageLoader.Get ("text-x-generic.png");
+                       }
+                       
+                       index = MimeIconEngine.SmallIcons.Images.Add (image, Color.Transparent);
+                       MimeIconEngine.LargeIcons.Images.Add (image, Color.Transparent);
+                       
+                       MimeIconEngine.MimeIconIndex.Add (internal_mime_type, index);
                }
                
-               protected override bool CheckPlatformDirectories( )
+               public override object AddAndGetIconIndex (string filename, string mime_type)
                {
-                       bool icons_found = false;
+                       int index = -1;
                        
-                       // default icon dirs
-                       if ( Directory.Exists( "/opt/kde3/share/icons/default.kde" ) )
-                       {
-                               icon_paths.Add( "/opt/kde3/share/icons" + "/" );
-                               icons_found = true;
-                       }
-                       else
-                       if ( Directory.Exists( "/usr/share/icons/default.kde" ) )
-                       {
-                               icon_paths.Add( "/usr/share/icons" + "/" );
-                               icons_found = true;
-                       }
-                       else
-                       if ( Directory.Exists( "/usr/local/share/icons/default.kde" ) )
-                       {
-                               icon_paths.Add( "/usr/local/share/icons"  + "/" );
-                               icons_found = true;
-                       }
-                       else
-                       if ( !icons_found )
-                       {
-                               mimeExtensionHandlerStatus = MimeExtensionHandlerStatus.NO_ICONS;
-                               return false;
-                       }
+                       Image image = GnomeUtil.GetIcon (filename, mime_type, 48);
                        
-                       bool mimelnk_found = false;
+                       index = MimeIconEngine.SmallIcons.Images.Add (image, Color.Transparent);
+                       MimeIconEngine.LargeIcons.Images.Add (image, Color.Transparent);
                        
-                       if ( Directory.Exists( "/usr/share/mimelnk" ) )
-                       {
-                               mime_paths.Add( "/usr/share/mimelnk" + "/" );
-                               mimelnk_found = true;
-                       }
+                       MimeIconEngine.MimeIconIndex.Add (mime_type, index);
                        
-                       if ( Directory.Exists( "/usr/local/share/mimelnk" ) )
-                       {
-                               mime_paths.Add( "/usr/local/share/mimelnk" + "/" );
-                               mimelnk_found = true;
-                       }
+                       return index;
+               }
+               
+               public override object AddAndGetIconIndex (string mime_type)
+               {
+                       int index = -1;
                        
-                       if ( Directory.Exists( "/opt/kde3/share/mimelnk" ) )
-                       {
-                               mime_paths.Add( "/opt/kde3/share/mimelnk" + "/" );
-                               mimelnk_found = true;
-                       }
+                       Image image = GnomeUtil.GetIcon (mime_type, 48);
                        
-                       if ( !mimelnk_found )
-                       {
-                               mimeExtensionHandlerStatus = MimeExtensionHandlerStatus.NO_MIMELNK;
-                               return false;
-                       }
+                       index = MimeIconEngine.SmallIcons.Images.Add (image, Color.Transparent);
+                       MimeIconEngine.LargeIcons.Images.Add (image, Color.Transparent);
+                       
+                       MimeIconEngine.MimeIconIndex.Add (mime_type, index);
                        
-                       return true;
+                       return index;
                }
+       }
+       
+       internal class GnomeUtil
+       {
+               const string libgdk = "libgdk-x11-2.0.so.0";
+               const string libgdk_pixbuf = "libgdk_pixbuf-2.0.so.0";
+               const string libgtk = "libgtk-x11-2.0.so.0";
+               const string libglib = "libglib-2.0.so.0";
+               const string libgobject = "libgobject-2.0.so.0";
+               const string libgnomeui = "libgnomeui-2.so.0";
+               const string librsvg = "librsvg-2.so.2";
+               
+               [DllImport(librsvg)]
+               static extern IntPtr rsvg_pixbuf_from_file_at_size (string file_name, int  width, int  height, out IntPtr error);
+               
+               [DllImport(libgdk_pixbuf)]
+               static extern bool gdk_pixbuf_save_to_buffer (IntPtr pixbuf, out IntPtr buffer, out UIntPtr buffer_size, string type, out IntPtr error, IntPtr option_dummy);
+               
+               [DllImport(libglib)]
+               static extern void g_free (IntPtr mem);
+               
+               [DllImport(libgdk)]
+               static extern bool gdk_init_check (IntPtr argc, IntPtr argv);
+               
+               [DllImport(libgobject)]
+               static extern void g_object_unref (IntPtr nativeObject);
+               
+               [DllImport(libgnomeui)]
+               static extern string gnome_icon_lookup (IntPtr icon_theme, IntPtr thumbnail_factory, string file_uri, string custom_icon, IntPtr file_info, string mime_type, GnomeIconLookupFlags flags, IntPtr result);
+               
+               [DllImport(libgtk)]
+               static extern IntPtr gtk_icon_theme_get_default ();
+               
+               [DllImport(libgtk)]
+               static extern IntPtr gtk_icon_theme_load_icon (IntPtr icon_theme, string icon_name, int size, GtkIconLookupFlags flags, out IntPtr error);
                
-               private void ReadIcons( )
+               [DllImport(libgtk)]
+               static extern bool gtk_icon_theme_has_icon (IntPtr icon_theme, string icon_name);
+               
+               enum GnomeIconLookupFlags
                {
-                       foreach ( string icon_path_in in icon_paths )
-                       {
-                               string icon_path = icon_path_in + icon_theme + "/48x48";
-                               
-                               string[] directories = Directory.GetDirectories( icon_path );
-                               
-                               foreach ( string d in directories )
-                               {
-                                       DirectoryInfo di = new DirectoryInfo( d );
-                                       
-                                       FileInfo[] fileinfo = di.GetFiles( );
-                                       
-                                       foreach ( FileInfo fi in fileinfo )
-                                       {
-                                               string name = Path.GetFileNameWithoutExtension( fi.Name );
-                                               
-                                               MimeIconEngine.AddIcon( name, fi.FullName );
-                                       }
-                               }
-                       }
-               }
+                       GNOME_ICON_LOOKUP_FLAGS_NONE = 0,
+                       GNOME_ICON_LOOKUP_FLAGS_EMBEDDING_TEXT = 1<<0,
+                       GNOME_ICON_LOOKUP_FLAGS_SHOW_SMALL_IMAGES_AS_THEMSELVES = 1<<1,
+                       GNOME_ICON_LOOKUP_FLAGS_ALLOW_SVG_AS_THEMSELVES = 1<<2
+               };
                
-               private void ReadMimetypes( )
+               enum GtkIconLookupFlags
                {
-                       MimeIconEngine.AddMimeTypeAndIconName( "unknown/unknown", "unknown" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "desktop/desktop", "desktop" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "directory/home", "folder_home" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "network/network", "network" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "recently/recently", "folder_man" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "workplace/workplace", "system" );
-                       
-                       foreach ( string mime_path in mime_paths )
-                       {
-                               string[] directories = Directory.GetDirectories( mime_path );
-                               
-                               foreach ( string d in directories )
-                               {
-                                       string[] files = Directory.GetFiles( d );
-                                       
-                                       foreach ( string f in files )
-                                       {
-                                           try {
-                                               ReadDotDesktop( f );
-                                           } catch {
-                                               // Ignore errors if the file can not be read.
-                                           }
-                                       }
-                               }
-                       }
-               }
+                       GTK_ICON_LOOKUP_NO_SVG = 1 << 0,
+                       GTK_ICON_LOOKUP_FORCE_SVG = 1 << 1,
+                       GTK_ICON_LOOKUP_USE_BUILTIN = 1 << 2
+               };
                
-               private void ReadDotDesktop( string filename )
+               static bool inited = false;
+               
+               static IntPtr default_icon_theme = IntPtr.Zero;
+               
+               static void Init ()
                {
-                       StreamReader sr = new StreamReader( filename );
-                       
-                       string line = sr.ReadLine( );
-                       
-                       string icon_name = "";
-                       
-                       string mime_type = "";
-                       
-                       bool have_icon = false;
-                       bool have_mimetype = false;
-                       
-                       while ( line != null )
-                       {
-                               line = line.Trim( );
-                               
-                               if ( line.StartsWith( "Icon" ) )
-                               {
-                                       icon_name = line.Substring( line.IndexOf( '=' ) + 1 );
-                                       icon_name = icon_name.Trim( );
-                                       if ( have_mimetype )
-                                               break;
-                                       have_icon = true;
-                               }
-                               else
-                               if ( line.StartsWith( "MimeType" ) )
-                               {
-                                       mime_type = line.Substring( line.IndexOf( '=' ) + 1 );
-                                       mime_type = mime_type.Trim( );
-                                       if ( have_icon )
-                                               break;
-                                       have_mimetype = true;
-                               }
-                               
-                               line = sr.ReadLine( );
-                       }
+                       gdk_init_check (IntPtr.Zero, IntPtr.Zero);
                        
-                       sr.Close( );
+                       inited = true;
                        
-                       MimeIconEngine.AddMimeTypeAndIconName( mime_type, icon_name );
+                       default_icon_theme = gtk_icon_theme_get_default ();
                }
                
-               private bool ReadKdeglobals( )
+               public static Image GetIcon (string file_name, string mime_type, int size)
                {
-                       if ( !File.Exists( full_kdegloabals_filename ) )
-                       {
-                               mimeExtensionHandlerStatus = MimeExtensionHandlerStatus.NO_KDEGLOBALS;
-                               
-                               return false;
-                       }
+                       if (!inited)
+                               Init ();
                        
-                       StreamReader sr = new StreamReader( full_kdegloabals_filename );
+                       Uri uri = new Uri (file_name);
                        
-                       string line = sr.ReadLine( );
+                       string icon = gnome_icon_lookup (default_icon_theme, IntPtr.Zero, uri.AbsoluteUri,
+                                                        null, IntPtr.Zero, mime_type,
+                                                        GnomeIconLookupFlags.GNOME_ICON_LOOKUP_FLAGS_NONE, IntPtr.Zero);
                        
-                       while ( line != null )
-                       {
-                               if ( line.IndexOf( "[Icons]" ) != -1 )
-                               {
-                                       line = sr.ReadLine( );
-                                       
-                                       if ( line != null && line.IndexOf( "Theme" ) != -1 )
-                                       {
-                                               line = line.Trim( );
-                                               
-                                               icon_theme = line.Substring( line.IndexOf( '=' ) + 1 );
-                                               
-                                               icon_theme = icon_theme.Trim( );
-                                               
-                                               break;
-                                       }
-                               }
-                               
-                               line = sr.ReadLine( );
-                       }
+                       IntPtr error = IntPtr.Zero;
+                       IntPtr pixbuf = gtk_icon_theme_load_icon (default_icon_theme, icon, size,
+                                                                 GtkIconLookupFlags.GTK_ICON_LOOKUP_USE_BUILTIN, out error);
                        
-                       sr.Close( );
+                       if (error != IntPtr.Zero)
+                               return null;
                        
-                       return true;
+                       return GdkPixbufToImage (pixbuf);
                }
-       }
-       
-       // GnomeHandler uses the default gnome icon theme (many others are svg only)
-       internal class GnomeHandler : PlatformMimeIconHandler
-       {
-               public override MimeExtensionHandlerStatus Start( )
+               
+               public static Image GetIcon (string icon, int size)
                {
-                       if ( !CheckPlatformDirectories( ) )
-                               return mimeExtensionHandlerStatus;
+                       if (!inited)
+                               Init ();
                        
-                       CreateMimeTypeFromIconName( );
+                       IntPtr error = IntPtr.Zero;
+                       IntPtr pixbuf = gtk_icon_theme_load_icon (default_icon_theme, icon, size,
+                                                                 GtkIconLookupFlags.GTK_ICON_LOOKUP_USE_BUILTIN, out error);
                        
-                       ReadIcons( );
+                       if (error != IntPtr.Zero)
+                               return null;
                        
-                       return MimeExtensionHandlerStatus.OK;
+                       return GdkPixbufToImage (pixbuf);
                }
                
-               protected override bool CheckPlatformDirectories( )
+               public static Image GdkPixbufToImage (IntPtr pixbuf)
                {
-                       // add more directories ???
-                       if ( Directory.Exists( "/opt/gnome/share/icons/gnome/48x48" ) )
-                       {
-                               icon_paths.Add( "/opt/gnome/share/icons/gnome/48x48/" );
-                       }
-                       else
-                       if ( Directory.Exists( "/usr/share/icons/gnome/48x48" ) )
-                       {
-                               icon_paths.Add( "/usr/share/icons/gnome/48x48/" );
-                       }
-                       else
-                       if ( Directory.Exists( "/usr/local/share/icons/gnome/48x48" ) )
-                       {
-                               icon_paths.Add( "/usr/local/share/icons/gnome/48x48/" );
-                       }
-                       else
-                       {
-                               mimeExtensionHandlerStatus = MimeExtensionHandlerStatus.NO_ICONS;
-                               return false;
-                       }
+                       IntPtr error = IntPtr.Zero;
+                       IntPtr buffer;
+                       UIntPtr buffer_size_as_ptr;
+                       string type = "png";
+                       
+                       bool saved = gdk_pixbuf_save_to_buffer (pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
                        
-                       return true;
+                       if (!saved)
+                               return null;
+                       
+                       int buffer_size = (int) (uint) buffer_size_as_ptr;
+                       byte[] result = new byte [buffer_size];
+                       Marshal.Copy (buffer, result, 0, (int) buffer_size);
+                       g_free (buffer);
+                       g_object_unref (pixbuf);
+                       
+                       Image image = null;
+                       using (MemoryStream s = new MemoryStream (result))
+                               image = Image.FromStream (s);
+                       
+                       return image;
                }
                
-               private void CreateMimeTypeFromIconName( )
+               public static Image GetSVGasImage (string filename, int width, int height)
                {
-                       MimeIconEngine.AddMimeTypeAndIconName( "inode/directory", "gnome-fs-directory" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "unknown/unknown", "gnome-fs-regular" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "desktop/desktop", "gnome-fs-desktop" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "directory/home", "gnome-fs-home" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "network/network", "gnome-fs-network" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "recently/recently", "gnome-fs-directory-accept" );
-                       MimeIconEngine.AddMimeTypeAndIconName( "workplace/workplace", "gnome-fs-client" );
-                       
-                       foreach ( string ip in icon_paths )
-                       {
-                               string[] files = Directory.GetFiles( ip + "mimetypes" );
-                               
-                               foreach ( string file in files )
-                               {
-                                       string extension = Path.GetExtension( file );
-                                       
-                                       if ( extension != ".png" )
-                                               continue;
-                                       
-                                       string file_name = Path.GetFileNameWithoutExtension( file );
-                                       
-                                       if ( !file_name.StartsWith( "gnome-mime-" ) )
-                                               continue;
-                                       
-                                       StringBuilder mime_type = new StringBuilder( file_name.Replace( "gnome-mime-", "" ) );
-                                       
-                                       for ( int i = 0; i < mime_type.Length; i++ )
-                                               if ( mime_type[ i ] == '-' )
-                                               {
-                                                       mime_type[ i ] = '/';
-                                                       break;
-                                               }
-                                       
-                                       MimeIconEngine.AddMimeTypeAndIconName( mime_type.ToString( ), file_name );
-                               }
-                       }
+                       if (!inited)
+                               Init ();
+                       
+                       if (!File.Exists (filename))
+                               return null;
+                       IntPtr error = IntPtr.Zero;
+                       IntPtr pixbuf = rsvg_pixbuf_from_file_at_size (filename, width, height, out error);
+                       
+                       if (error != IntPtr.Zero)
+                               return null;
+                       
+                       return GdkPixbufToImage (pixbuf);
                }
                
-               private void ReadIcons( )
+               public static bool HasImage (string name)
                {
-                       foreach ( string icon_path in icon_paths )
-                       {
-                               string[] directories = Directory.GetDirectories( icon_path );
-                               
-                               foreach ( string directory in directories )
-                               {
-                                       DirectoryInfo di = new DirectoryInfo( directory );
-                                       
-                                       FileInfo[] fileinfo = di.GetFiles( );
-                                       
-                                       foreach ( FileInfo fi in fileinfo )
-                                       {
-                                               if ( fi.Extension != ".png" )
-                                                       continue;
-                                               
-                                               string name = Path.GetFileNameWithoutExtension( fi.Name );
-                                               
-                                               MimeIconEngine.AddIcon( name, fi.FullName );
-                                       }
-                               }
-                       }
+                       if (!inited)
+                               Init ();
+                       
+                       return gtk_icon_theme_has_icon (default_icon_theme, name);
                }
        }
 }