wxPython/demo/MimeTypesManager.py

   1 #----------------------------------------------------------------------
   2 # Name:        wxMimeTypesManager
   3 # Purpose:     Demonstrate use of wx.MimeTypesManager, wx.FileType
   4 #
   5 # Author:      Jeff Grimmett (grimmtoo@softhome.net), adapted from original
   6 #              .wdr-derived demo
   7 #
   8 # Created:     12/31/03
   9 # RCS-ID:      $Id$
  10 # Copyright:
  11 # Licence:     wxWindows license
  12 #----------------------------------------------------------------------
  13 #
  14
  15
  16 import  pprint
  17 import  wx
  18 import  images
  19
  20 #----------------------------------------------------------------------------
  21
  22 class MimeTypesDemoPanel(wx.Panel):
  23     def __init__(self, parent, log):
  24
  25         self.log = log
  26
  27         wx.Panel.__init__(self, parent, -1)
  28
  29         # This will be used for all of the labels that follow (bold label)
  30         bfont = wx.Font(
  31                     self.GetFont().GetPointSize(),
  32                     self.GetFont().GetFamily(),
  33                     self.GetFont().GetStyle(),
  34                     wx.BOLD
  35                     )
  36
  37         # Contains everything
  38         tsizer = wx.BoxSizer(wx.VERTICAL)
  39
  40         # Contains upper controls
  41         usizer = wx.BoxSizer(wx.HORIZONTAL)
  42
  43         # Text control for ext / type entry plus label.
  44         t = wx.StaticText(self, -1, 'Extension / MIME type: ', style = wx.ALIGN_RIGHT )
  45         t.SetFont(bfont)
  46         usizer.Add(t, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 2)
  47
  48         self.ext = wx.TextCtrl(self, -1, value="wav", style = wx.TE_PROCESS_ENTER )
  49         usizer.Add(self.ext, 0, wx.ALL | wx.ALIGN_TOP, 4)
  50         self.Bind(wx.EVT_TEXT_ENTER, self.OnLookup, self.ext)
  51
  52         # Select how to look it up
  53         self.useExt = wx.RadioButton(self, -1, "By extension", style = wx.RB_GROUP)
  54         self.useMime = wx.RadioButton(self, -1, "By MIME type")
  55
  56         usizer.Add(self.useExt, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  57         usizer.Add(self.useMime, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  58         self.useExt.SetValue(1)
  59
  60         # Trigger a lookup (hitting ENTER in the text ctrl will do the same thing)
  61         self.go = wx.Button(self, -1, "Go get it!")
  62         usizer.Add(self.go, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  63         self.Bind(wx.EVT_BUTTON, self.OnLookup, self.go)
  64
  65         # StaticBox with larger label than usual
  66         lbox = wx.StaticBox(self, -1, 'wx.FileType')
  67         lbox.SetFont(
  68             wx.Font(
  69                 self.GetFont().GetPointSize() * 2,
  70                 self.GetFont().GetFamily(),
  71                 self.GetFont().GetStyle(),
  72                 wx.BOLD
  73                 ))
  74
  75         lsizer = wx.StaticBoxSizer(lbox, wx.HORIZONTAL)
  76
  77         # Contains the wx.FileType info
  78         llsizer = wx.GridBagSizer(2, 2)
  79         llsizer.AddGrowableCol(2)
  80
  81         #------- Icon info
  82
  83         t = wx.StaticText(self, -1, 'GetIconInfo: ', style = wx.ALIGN_RIGHT )
  84         t.SetFont(bfont)
  85         llsizer.Add(t, (0, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  86
  87         self.icon = wx.StaticBitmap(self, -1, images.getNoIconBitmap())
  88         llsizer.Add(self.icon, (0, 1), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  89
  90         self.iconsource = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
  91         llsizer.Add(self.iconsource, (0, 2), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  92
  93         self.iconoffset = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
  94         llsizer.Add(self.iconoffset, (0, 3), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  95
  96         #------- MIME Type
  97
  98         t = wx.StaticText(self, -1, 'GetMimeType: ', style = wx.ALIGN_RIGHT )
  99         t.SetFont(bfont)
 100         llsizer.Add(t, (1, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 101
 102         self.mimetype = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 103         llsizer.Add(self.mimetype, (1, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 104
 105         #------- MIME Types
 106
 107         t = wx.StaticText(self, -1, 'GetMimeTypes: ', style = wx.ALIGN_RIGHT )
 108         t.SetFont(bfont)
 109         llsizer.Add(t, (2, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 110
 111         self.mimetypes = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 112         llsizer.Add(self.mimetypes, (2, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 113
 114         #------- Extensions
 115
 116         t = wx.StaticText(self, -1, 'GetExtensions: ', style = wx.ALIGN_RIGHT )
 117         t.SetFont(bfont)
 118         llsizer.Add(t, (3, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 119
 120         self.extensions = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 121         llsizer.Add(self.extensions, (3, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 122
 123         #------- Description
 124
 125         t = wx.StaticText(self, -1, 'GetDescription: ', style = wx.ALIGN_RIGHT )
 126         t.SetFont(bfont)
 127         llsizer.Add(t, (4, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 128
 129         self.description = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY)
 130         llsizer.Add(self.description, (4, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 131
 132         #------- Open command
 133
 134         t = wx.StaticText(self, -1, 'GetOpenCommand: ', style = wx.ALIGN_RIGHT )
 135         t.SetFont(bfont)
 136         llsizer.Add(t, (5, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 137
 138         self.opencommand = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 139         llsizer.Add(self.opencommand, (5, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 140
 141         #------- Print command
 142
 143         t = wx.StaticText(self, -1, 'GetPrintCommand: ', style = wx.ALIGN_RIGHT )
 144         t.SetFont(bfont)
 145         llsizer.Add(t, (6, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 146
 147         self.printcommand = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 148         llsizer.Add(self.printcommand, (6, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 149
 150         #------- All commands
 151
 152         t = wx.StaticText(self, -1, 'GetAllCommands: ', style = wx.ALIGN_RIGHT )
 153         t.SetFont(bfont)
 154         llsizer.Add(t, (7, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 155
 156         self.allcommands = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY | wx.TE_DONTWRAP | wx.TE_MULTILINE )
 157
 158         # Set the default height to be smaller than normal (for
 159         # multi-line) so the sizer can then expand it to whatever
 160         # space is available
 161         self.allcommands.SetSize((-1, 20))
 162
 163         llsizer.Add(self.allcommands, (7, 1), (1, 3), wx.ALL | wx.GROW | wx.ALIGN_CENTER, 2)
 164
 165         # Tell the sizer to expand this row as needed
 166         llsizer.AddGrowableRow(7)
 167
 168         #----------------------------------------------------------------------------
 169
 170         lrsizer = wx.BoxSizer(wx.VERTICAL)
 171
 172         #------- List box with known MIME types
 173
 174         t = wx.StaticText(self, -1, 'Known MIME types')
 175         t.SetFont(bfont)
 176         lrsizer.Add(t, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 177
 178         self.mimelist = wx.ListBox(self, -1, choices=[], style = wx.LB_SINGLE | wx.LB_SORT)
 179         lrsizer.Add(self.mimelist, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 180         self.Bind(wx.EVT_LISTBOX, self.OnListbox, self.mimelist)
 181
 182         #----------------------------------------------------------------------------
 183
 184         lsizer.Add(llsizer, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 185         lsizer.Add(lrsizer, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 186
 187         #----------------------------------------------------------------------------
 188
 189         tsizer.Add(usizer, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 190         tsizer.Add(lsizer, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 191
 192         #----------------------------------------------------------------------------
 193
 194         self.SetSizer(tsizer)
 195         tsizer.Fit(self)
 196
 197         # Populate the Known MIME types list with what is in the database
 198         try:
 199             mtypes = wx.TheMimeTypesManager.EnumAllFileTypes()
 200         except wx.PyAssertionError:
 201             mtypes = []
 202         for mt in mtypes:
 203             self.mimelist.Append(mt)
 204
 205         # Do a lookup of *.wav for a starting position
 206         self.OnLookup()
 207
 208     # Grab the selection from the listbox, push that into
 209     # the text box at top, select 'MIME', and then look it up.
 210     def OnListbox(self, event):
 211         mimetype = event.GetString()
 212         self.ext.SetValue(mimetype)
 213         self.useMime.SetValue(1)
 214         self.OnLookup()
 215
 216     # Look up a given file extension or MIME type.
 217     def OnLookup(self, event=None):
 218         txt = self.ext.GetValue()
 219
 220         # For MIME lookups
 221         if self.useMime.GetValue() == 1:
 222             fileType = wx.TheMimeTypesManager.GetFileTypeFromMimeType(txt)
 223             msg = "Mime type"
 224
 225             # Select the entered value in the list
 226             if fileType:
 227                 if self.mimelist.FindString(txt) != -1:
 228                     self.mimelist.SetSelection(self.mimelist.FindString(txt))
 229
 230         # Must be an extension lookup
 231         else:
 232             fileType = wx.TheMimeTypesManager.GetFileTypeFromExtension(txt)
 233             msg = "File extension"
 234
 235             # Select the entered value in the list
 236             if fileType:
 237                 if self.mimelist.FindString(str(fileType.GetMimeType())) != -1:
 238                     # Using CallAfter to ensure that GUI is ready before trying to
 239                     # select it (otherwise, it's selected but not visible)
 240                     wx.CallAfter(self.mimelist.SetSelection, self.mimelist.FindString(str(fileType.GetMimeType())))
 241
 242
 243         if fileType is None:
 244             wx.MessageBox(msg + " not found.", "Oops!")
 245         else:
 246             self.Update(fileType)
 247
 248     # Populate the wx.FileType fields with actual values.
 249     def Update(self, ft):
 250
 251         #------- Icon info
 252         info = ft.GetIconInfo()
 253
 254         if info is None:
 255             bmp = images.getNoIconBitmap()
 256             self.icon.SetBitmap(bmp)
 257             self.iconsource.SetValue("")
 258             self.iconoffset.SetValue("")
 259         else:
 260             icon, file, idx = info
 261             if icon.Ok():
 262                 self.icon.SetIcon(icon)
 263             else:
 264                 bmp = images.getNoIconBitmap()
 265                 self.icon.SetBitmap(bmp)
 266             self.iconsource.SetValue(file)
 267             self.iconoffset.SetValue(str(idx))
 268
 269         #------- MIME type
 270         self.mimetype.SetValue(str(ft.GetMimeType()))
 271         #------- MIME types
 272         self.mimetypes.SetValue(str(ft.GetMimeTypes()))
 273         #------- Associated extensions
 274         self.extensions.SetValue(str(ft.GetExtensions()))
 275         #------- Description of file type
 276         self.description.SetValue(str(ft.GetDescription()))
 277
 278         #------- Prep a fake command line command
 279         extList = ft.GetExtensions()
 280
 281         if extList:
 282             ext = extList[0]
 283             if ext[0] == ".": ext = ext[1:]
 284         else:
 285             ext = ""
 286
 287         filename = "SPAM" + "." + ext
 288         mime = ft.GetMimeType() or ""
 289
 290         #------- OPEN command
 291         cmd = ft.GetOpenCommand(filename, mime)
 292         self.opencommand.SetValue(str(cmd))
 293
 294         #------- PRINT command
 295         cmd = ft.GetPrintCommand(filename, mime)
 296         self.printcommand.SetValue(str(cmd))
 297
 298         #------- All commands
 299         all = ft.GetAllCommands(filename, mime)
 300
 301         if all is None:
 302             self.allcommands.SetValue("")
 303         else:
 304             verbs, commands = all
 305             text = pprint.pformat(map(None, verbs, commands))
 306             self.allcommands.SetValue(text)
 307
 308
 309 #----------------------------------------------------------------------
 310
 311 def runTest(frame, nb, log):
 312     win = MimeTypesDemoPanel(nb, log)
 313     return win
 314
 315 #----------------------------------------------------------------------
 316
 317 overview = """\
 318
 319 The <b>wx.MimeTypesManager</b> class allows the application to retrieve the
 320 information about all known MIME types from a system-specific location and the
 321 filename extensions to the MIME types and vice versa. After initialization the
 322 methods <b>GetFileTypeFromMimeType()</b> and <b>GetFileTypeFromExtension()</b>
 323 may be called: they will return a <b>wx.FileType</b> object which may be further
 324 queried for file description, icon and other attributes.
 325
 326 A global instance of <b>wx.MimeTypesManager</b> is always available as
 327 <b>wx.TheMimeTypesManager</b>. It is recommended to use this instance instead
 328 of creating your own because gathering MIME information may take quite a long
 329 on Unix systems.
 330
 331 This demo shows how to use wx.TheMimeTypesManager to list all known MIME types
 332 and retrieve that information as a wx.FileType from either an extension or
 333 MIME type.
 334
 335 For further information please consult the wxWindows documentation for
 336 <b>wx.MimeTypesManager</b> and <b>wx.FileType</b>.
 337
 338 """
 339
 340 #----------------------------------------------------------------------
 341
 342 if __name__ == '__main__':
 343     import sys,os
 344     import run
 345     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])