src/gtkspell.py

   1 ## src/gtkspell.py
   2 ##
   3 ## (C) 2008 Thorsten P. 'dGhvcnN0ZW5wIEFUIHltYWlsIGNvbQ==\n'.decode("base64")
   4 ##
   5 ## This file is part of Gajim.
   6 ##
   7 ## Gajim is free software; you can redistribute it and/or modify
   8 ## it under the terms of the GNU General Public License as published
   9 ## by the Free Software Foundation; version 3 only.
  10 ##
  11 ## Gajim is distributed in the hope that it will be useful,
  12 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 ## GNU General Public License for more details.
  15 ##
  16 ## You should have received a copy of the GNU General Public License
  17 ## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
  18
  19 import ctypes
  20 import ctypes.util
  21
  22 import gtk
  23
  24
  25 gboolean = ctypes.c_int
  26 gchar_p = ctypes.c_char_p
  27 gerror_p = ctypes.c_void_p
  28 gobject_p = ctypes.c_void_p
  29 gtkspell_p = ctypes.c_void_p
  30 gtktextview_p = ctypes.c_void_p
  31
  32
  33 class PyGObject(ctypes.Structure):
  34     _fields_ = [
  35             ("PyObject_HEAD", ctypes.c_byte * object.__basicsize__),
  36             ("obj", gobject_p)
  37     ]
  38
  39
  40 libgtkspell_path = ctypes.util.find_library("gtkspell")
  41 if libgtkspell_path == None:
  42     raise ImportError("libgtkspell not found")
  43 libgtkspell = ctypes.cdll.LoadLibrary(libgtkspell_path)
  44 libgtkspell.gtkspell_new_attach.restype = gtkspell_p
  45 libgtkspell.gtkspell_new_attach.argtypes = [gtktextview_p, gchar_p, gerror_p]
  46 libgtkspell.gtkspell_set_language.restype = gboolean
  47 libgtkspell.gtkspell_set_language.argtypes = [gtkspell_p, gchar_p, gerror_p]
  48 libgtkspell.gtkspell_recheck_all.argtypes = [gtkspell_p]
  49 libgtkspell.gtkspell_get_from_text_view.restype = gtkspell_p
  50 libgtkspell.gtkspell_get_from_text_view.argtypes = [gtktextview_p]
  51 libgtkspell.gtkspell_detach.argtypes = [gtkspell_p]
  52
  53
  54 def ensure_attached(func):
  55     def f(self, *args, **kwargs):
  56         if self.spell:
  57             func(self, *args, **kwargs)
  58         else:
  59             raise RuntimeError("Spell object is already detached")
  60     return f
  61
  62
  63 class Spell(object):
  64
  65     def __init__(self, textview, language=None, create=True):
  66         if not isinstance(textview, gtk.TextView):
  67             raise TypeError("Textview must be derived from gtk.TextView")
  68         tv = PyGObject.from_address(id(textview)).obj
  69         spell = libgtkspell.gtkspell_get_from_text_view(tv)
  70         if create:
  71             if spell:
  72                 raise RuntimeError("Textview has already a Spell obj attached")
  73             self.spell = libgtkspell.gtkspell_new_attach(tv, language, None)
  74             if not self.spell:
  75                 raise OSError("Unable to attach spell object. "
  76                               "Language: '%s'" % str(language))
  77         else:
  78             if spell:
  79                 self.spell = spell
  80             else:
  81                 raise RuntimeError("Textview has no Spell object attached")
  82
  83     @ensure_attached
  84     def set_language(self, language):
  85         if libgtkspell.gtkspell_set_language(self.spell, language, None) == 0:
  86             raise OSError("Unable to set language '%s'" % str(language))
  87
  88     @ensure_attached
  89     def recheck_all(self):
  90         libgtkspell.gtkspell_recheck_all(self.spell)
  91
  92     @ensure_attached
  93     def detach(self):
  94         libgtkspell.gtkspell_detach(self.spell)
  95         self.spell = None
  96
  97
  98 def get_from_text_view(textview):
  99     return Spell(textview, create=False)