src/gpodder/gtkui/macosx.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # gPodder - A media aggregator and podcast client
   4 # Copyright (c) 2005-2013 Thomas Perl and the gPodder Team
   5 #
   6 # gPodder is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # gPodder 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 import struct
  21 import sys
  22
  23 from gpodder import util
  24
  25 def aeKeyword(fourCharCode):
  26     """transform four character code into a long"""
  27     return struct.unpack('I', fourCharCode)[0]
  28
  29
  30 # for the kCoreEventClass, kAEOpenDocuments, ... constants
  31 # comes with macpython
  32 from Carbon.AppleEvents import *
  33
  34 # all this depends on pyObjc (http://pyobjc.sourceforge.net/).
  35 # There may be a way to achieve something equivalent with only
  36 # what's in MacPython (see for instance http://mail.python.org/pipermail/pythonmac-sig/2006-May/017373.html)
  37 # but I couldn't achieve this !
  38
  39 # Also note that it only works when gPodder is not running !
  40 # For some reason I don't get the events afterwards...
  41 try:
  42     from AppKit import NSObject
  43     from AppKit import NSAppleEventManager
  44     from AppKit import NSAppleEventDescriptor
  45
  46     class gPodderEventHandler(NSObject):
  47         """ handles Apple Events for :
  48             - Open With... (and dropping a file on the icon)
  49             - "subscribe to podcast" from firefox
  50         The code was largely inspired by gedit-osx-delegate.m, from the
  51         gedit project
  52         (see http://git.gnome.org/browse/gedit/tree/gedit/osx/gedit-osx-delegate.m?id=GEDIT_2_28_3).
  53         """
  54
  55         # keeps a reference to the gui.gPodder class
  56         gp = None
  57
  58         def register(self, gp):
  59             """ register all handlers with NSAppleEventManager """
  60             self.gp = gp
  61             aem = NSAppleEventManager.sharedAppleEventManager()
  62             aem.setEventHandler_andSelector_forEventClass_andEventID_(
  63                 self, 'openFileEvent:reply:', aeKeyword(kCoreEventClass), aeKeyword(kAEOpenDocuments))
  64             aem.setEventHandler_andSelector_forEventClass_andEventID_(
  65                 self, 'subscribeEvent:reply:', aeKeyword('GURL'), aeKeyword('GURL'))
  66
  67         def openFileEvent_reply_(self, event, reply):
  68             """ handles an 'Open With...' event"""
  69             urls = []
  70             filelist = event.paramDescriptorForKeyword_(aeKeyword(keyDirectObject))
  71             numberOfItems = filelist.numberOfItems()
  72             for i in range(1,numberOfItems+1):
  73                 fileAliasDesc = filelist.descriptorAtIndex_(i)
  74                 fileURLDesc = fileAliasDesc.coerceToDescriptorType_(aeKeyword(typeFileURL))
  75                 fileURLData = fileURLDesc.data()
  76                 url = buffer(fileURLData.bytes(),0,fileURLData.length())
  77                 url = str(url)
  78                 util.idle_add(self.gp.on_item_import_from_file_activate, None,url)
  79                 urls.append(str(url))
  80
  81             print >>sys.stderr,("open Files :",urls)
  82             result = NSAppleEventDescriptor.descriptorWithInt32_(42)
  83             reply.setParamDescriptor_forKeyword_(result, aeKeyword('----'))
  84
  85         def subscribeEvent_reply_(self, event, reply):
  86             """ handles a 'Subscribe to...' event"""
  87             filelist = event.paramDescriptorForKeyword_(aeKeyword(keyDirectObject))
  88             fileURLData = filelist.data()
  89             url = buffer(fileURLData.bytes(),0,fileURLData.length())
  90             url = str(url)
  91             print >>sys.stderr,("Subscribe to :"+url)
  92             util.idle_add(self.gp.subscribe_to_url, url)
  93
  94             result = NSAppleEventDescriptor.descriptorWithInt32_(42)
  95             reply.setParamDescriptor_forKeyword_(result, aeKeyword('----'))
  96
  97     # global reference to the handler (mustn't be destroyed)
  98     handler = gPodderEventHandler.alloc().init()
  99 except ImportError:
 100     print >> sys.stderr, """
 101     Warning: pyobjc not found. Disabling "Subscribe with" events handling
 102     """
 103     handler = None
 104
 105 def register_handlers(gp):
 106     """ register the events handlers (and keep a reference to gPodder's instance)"""
 107     if handler is not None:
 108         handler.register(gp)
 109