mcs/class/Managed.Windows.Forms/System.Windows.Forms/DataFormats.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 // COMPLETE
  28
  29 using System;
  30 using System.Collections;
  31 using System.Text;
  32
  33 namespace System.Windows.Forms {
  34         public class DataFormats {
  35                 public class Format {
  36                         static readonly object lockobj = new object ();
  37
  38                         private static Format   formats;
  39                         private string          name;
  40                         private int             id;
  41                         private Format          next;
  42
  43                         public Format (string name, int ID)
  44                         {
  45                                 this.name = name;
  46                                 this.id = ID;
  47
  48                                 lock (lockobj) {
  49                                         if (formats == null)
  50                                                 formats = this;
  51                                         else {
  52                                                 Format f = formats;
  53                                                 while (f.next != null)
  54                                                         f = f.next;
  55                                                 f.next = this;
  56                                         }
  57                                 }
  58                         }
  59
  60                         #region Public Instance Properties
  61                         public int Id {
  62                                 get {
  63                                         return this.id;
  64                                 }
  65                         }
  66
  67                         public string Name {
  68                                 get {
  69                                         return this.name;
  70                                 }
  71                         }
  72
  73                         internal Format Next {
  74                                 get {
  75                                         return this.next;
  76                                 }
  77                         }
  78                         #endregion      // Public Instance Properties
  79
  80                         #region Private Methods
  81                         internal static Format Add(string name) {
  82                                 Format f;
  83
  84                                 f = Find(name);
  85                                 if (f == null) {
  86                                         IntPtr cliphandle;
  87
  88                                         cliphandle = XplatUI.ClipboardOpen(false);
  89                                         f = new Format(name, XplatUI.ClipboardGetID(cliphandle, name));
  90                                         XplatUI.ClipboardClose(cliphandle);
  91                                 }
  92                                 return f;
  93                         }
  94
  95                         internal static Format Add(int id) {
  96                                 Format f;
  97
  98                                 f = Find(id);
  99                                 if (f == null) {
 100                                         f = new Format("Format"+id.ToString(), id);
 101                                 }
 102                                 return f;
 103                         }
 104
 105                         internal static Format Find(int id) {
 106                                 Format f;
 107
 108                                 f = formats;
 109                                 while ((f != null) && (f.Id != id)) {
 110                                         f = f.next;
 111                                 }
 112                                 return f;
 113                         }
 114
 115                         internal static Format Find(string name) {
 116                                 Format f;
 117
 118                                 f = formats;
 119                                 while ((f != null) && (!f.Name.Equals(name))) {
 120                                         f = f.next;
 121                                 }
 122                                 return f;
 123                         }
 124
 125                         internal static Format List {
 126                                 get {
 127                                         return formats;
 128                                 }
 129                         }
 130                         #endregion      // Private Methods
 131
 132                 }
 133
 134                 private DataFormats () {}
 135
 136                 #region Public Static Fields
 137                 public static readonly string Bitmap                    = "Bitmap";
 138                 public static readonly string CommaSeparatedValue       = "Csv";
 139                 public static readonly string Dib                       = "DeviceIndependentBitmap";
 140                 public static readonly string Dif                       = "DataInterchangeFormat";
 141                 public static readonly string EnhancedMetafile          = "EnhancedMetafile";
 142                 public static readonly string FileDrop                  = "FileDrop";
 143                 public static readonly string Html                      = "HTML Format";
 144                 public static readonly string Locale                    = "Locale";
 145                 public static readonly string MetafilePict              = "MetaFilePict";
 146                 public static readonly string OemText                   = "OEMText";
 147                 public static readonly string Palette                   = "Palette";
 148                 public static readonly string PenData                   = "PenData";
 149                 public static readonly string Riff                      = "RiffAudio";
 150                 public static readonly string Rtf                       = "Rich Text Format";
 151                 public static readonly string Serializable              = "WindowsForms10PersistentObject";
 152                 public static readonly string StringFormat              = "System.String";
 153                 public static readonly string SymbolicLink              = "SymbolicLink";
 154                 public static readonly string Text                      = "Text";
 155                 public static readonly string Tiff                      = "Tiff";
 156                 public static readonly string UnicodeText               = "UnicodeText";
 157                 public static readonly string WaveAudio                 = "WaveAudio";
 158                 #endregion      // Public Static Fields
 159
 160                 private static object lock_object = new object ();
 161                 private static bool initialized;
 162
 163                 public static Format GetFormat (int ID)
 164                 {
 165                         lock (lock_object) {
 166                                 if (!initialized)
 167                                         Init ();
 168                                 return Format.Find (ID);
 169                         }
 170                 }
 171
 172                 public static Format GetFormat (string format)
 173                 {
 174                         lock (lock_object) {
 175                                 if (!initialized)
 176                                         Init ();
 177                                 return Format.Add (format);
 178                         }
 179                 }
 180
 181                 // Assumes we are locked on the lock_object when it is called
 182                 private static void Init ()
 183                 {
 184                         if (initialized)
 185                                 return;
 186                         IntPtr cliphandle = XplatUI.ClipboardOpen(false);
 187
 188                         new Format (Text, XplatUI.ClipboardGetID (cliphandle, Text));
 189                         new Format (Bitmap, XplatUI.ClipboardGetID (cliphandle, Bitmap));
 190                         new Format (MetafilePict, XplatUI.ClipboardGetID (cliphandle, MetafilePict));
 191                         new Format (SymbolicLink, XplatUI.ClipboardGetID (cliphandle, SymbolicLink));
 192                         new Format (Dif, XplatUI.ClipboardGetID (cliphandle, Dif)) ;
 193                         new Format (Tiff, XplatUI.ClipboardGetID (cliphandle, Tiff));
 194                         new Format (OemText, XplatUI.ClipboardGetID (cliphandle, OemText));
 195                         new Format (Dib, XplatUI.ClipboardGetID (cliphandle, Dib));
 196                         new Format (Palette, XplatUI.ClipboardGetID (cliphandle, Palette));
 197                         new Format (PenData, XplatUI.ClipboardGetID (cliphandle, PenData));
 198                         new Format (Riff, XplatUI.ClipboardGetID (cliphandle, Riff));
 199                         new Format (WaveAudio, XplatUI.ClipboardGetID (cliphandle, WaveAudio));
 200                         new Format (UnicodeText, XplatUI.ClipboardGetID (cliphandle, UnicodeText));
 201                         new Format (EnhancedMetafile, XplatUI.ClipboardGetID (cliphandle, EnhancedMetafile));
 202                         new Format (FileDrop, XplatUI.ClipboardGetID (cliphandle, FileDrop));
 203                         new Format (Locale, XplatUI.ClipboardGetID (cliphandle, Locale));
 204                         new Format (CommaSeparatedValue, XplatUI.ClipboardGetID (cliphandle, CommaSeparatedValue));
 205                         new Format (Html, XplatUI.ClipboardGetID (cliphandle, Html));
 206                         new Format (Rtf, XplatUI.ClipboardGetID (cliphandle, Rtf));
 207                         new Format (Serializable, XplatUI.ClipboardGetID (cliphandle, Serializable));
 208                         new Format (StringFormat, XplatUI.ClipboardGetID (cliphandle, StringFormat));
 209
 210                         XplatUI.ClipboardClose (cliphandle);
 211
 212                         initialized = true;
 213                 }
 214         }
 215 }