150 lines
4.9 KiB
Python
150 lines
4.9 KiB
Python
# Copyright (C) 2006-2007 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import os
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import logging
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import gobject
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from sugar.bundle.activitybundle import ActivityBundle
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from sugar.bundle.bundle import MalformedBundleException
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from sugar import env
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from sugar import util
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# http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
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def _get_data_dirs():
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if os.environ.has_key('XDG_DATA_DIRS'):
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return os.environ['XDG_DATA_DIRS'].split(':')
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else:
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return [ '/usr/local/share/', '/usr/share/' ]
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def _load_mime_defaults():
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defaults = {}
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f = open(env.get_data_path('mime.defaults'), 'r')
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for line in f.readlines():
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line = line.strip()
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if line and not line.startswith('#'):
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mime = line[:line.find(' ')]
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handler = line[line.rfind(' ') + 1:]
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defaults[mime] = handler
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f.close()
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return defaults
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class BundleRegistry(gobject.GObject):
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"""Service that tracks the available activity bundles"""
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__gsignals__ = {
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'bundle-added': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT])),
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'bundle-removed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT]))
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}
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def __init__(self):
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gobject.GObject.__init__(self)
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self._bundles = []
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self._search_path = []
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self._mime_defaults = _load_mime_defaults()
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def get_bundle(self, bundle_id):
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"""Returns an bundle given his service name"""
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for bundle in self._bundles:
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if bundle.get_bundle_id() == bundle_id:
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return bundle
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return None
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def add_search_path(self, path):
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"""Add a directory to the bundles search path"""
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self._search_path.append(path)
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self._scan_directory(path)
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def __iter__(self):
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return self._bundles.__iter__()
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def _scan_directory(self, path):
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if not os.path.isdir(path):
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return
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# Sort by mtime to ensure a stable activity order
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bundles = {}
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for f in os.listdir(path):
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if not f.endswith('.activity'):
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continue
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try:
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bundle_dir = os.path.join(path, f)
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if os.path.isdir(bundle_dir):
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bundles[bundle_dir] = os.stat(bundle_dir).st_mtime
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except Exception, e:
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logging.error('Error while processing installed activity ' \
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'bundle: %s, %s, %s' % (f, e.__class__, e))
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bundle_dirs = bundles.keys()
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bundle_dirs.sort(lambda d1,d2: cmp(bundles[d1], bundles[d2]))
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for dir in bundle_dirs:
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try:
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self.add_bundle(dir)
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except Exception, e:
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logging.error('Error while processing installed activity ' \
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'bundle: %s, %s, %s' % (dir, e.__class__, e))
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def add_bundle(self, bundle_path):
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try:
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bundle = ActivityBundle(bundle_path)
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except MalformedBundleException:
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return False
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self._bundles.append(bundle)
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self.emit('bundle-added', bundle)
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return True
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def remove_bundle(self, bundle_path):
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for bundle in self._bundles:
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if bundle.get_path() == bundle_path:
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self._bundles.remove(bundle)
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self.emit('bundle-removed', bundle)
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return True
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return False
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def get_activities_for_type(self, mime_type):
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result = []
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for bundle in self._bundles:
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if bundle.get_mime_types() and mime_type in bundle.get_mime_types():
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if self.get_default_for_type(mime_type) == bundle.get_bundle_id():
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result.insert(0, bundle)
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else:
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result.append(bundle)
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return result
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def get_default_for_type(self, mime_type):
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if self._mime_defaults.has_key(mime_type):
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return self._mime_defaults[mime_type]
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else:
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return None
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def get_registry():
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return _bundle_registry
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_bundle_registry = BundleRegistry()
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for path in _get_data_dirs():
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bundles_path = os.path.join(path, 'activities')
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_bundle_registry.add_search_path(bundles_path)
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_bundle_registry.add_search_path(env.get_user_activities_path())
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