Move the activity register to the clipboard service.

2007-08-08 18:08:07 +02:00
parent bfcab6b0b6
commit fa8bcd2ba5
10 changed files with 140 additions and 101 deletions
@@ -1,13 +1,18 @@
 servicedir = $(datadir)/dbus-1/services

 service_in_files =                              \
+    org.laptop.ActivityRegistry.service.in      \
    org.laptop.Clipboard.service.in             \
    org.laptop.ObjectTypeRegistry.service.in

 service_DATA =					\
+    org.laptop.ActivityRegistry.service		\
    org.laptop.Clipboard.service		\
    org.laptop.ObjectTypeRegistry.service

+org.laptop.ActivityRegistry.service: org.laptop.ActivityRegistry.service.in Makefile
+	@sed -e "s|\@bindir\@|$(bindir)|" $< > $@
+
 org.laptop.Clipboard.service: org.laptop.Clipboard.service.in Makefile
 	@sed -e "s|\@bindir\@|$(bindir)|" $< > $@

@@ -16,10 +21,11 @@ org.laptop.ObjectTypeRegistry.service: org.laptop.ObjectTypeRegistry.service.in

 sugardir = $(pkgdatadir)/services/clipboard

-sugar_PYTHON =			\
-	__init__.py		\
-	clipboardobject.py      \
-	clipboardservice.py     \
+sugar_PYTHON =				\
+	__init__.py			\
+	activityregistryservice.py	\
+	clipboardobject.py      	\
+	clipboardservice.py     	\
 	objecttypeservice.py

 bin_SCRIPTS = sugar-clipboard
@@ -0,0 +1,104 @@
+# Copyright (C) 2006-2007 Red Hat, Inc.
+# Copyright (C) 2007 One Laptop Per Child
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import dbus
+import dbus.service
+
+import bundleregistry
+
+_ACTIVITY_REGISTRY_SERVICE_NAME = 'org.laptop.ActivityRegistry'
+_ACTIVITY_REGISTRY_IFACE = 'org.laptop.ActivityRegistry'
+_ACTIVITY_REGISTRY_PATH = '/org/laptop/ActivityRegistry'
+
+class ActivityRegistry(dbus.service.Object):
+    def __init__(self):
+        bus = dbus.SessionBus()
+        bus_name = dbus.service.BusName(_ACTIVITY_REGISTRY_SERVICE_NAME, bus=bus)
+        dbus.service.Object.__init__(self, bus_name, _ACTIVITY_REGISTRY_PATH)
+
+        bundle_registry = bundleregistry.get_registry()
+        bundle_registry.connect('bundle-added', self._bundle_added_cb)
+
+    @dbus.service.method(_ACTIVITY_REGISTRY_IFACE,
+                         in_signature='s', out_signature='b')
+    def AddBundle(self, bundle_path):
+        '''Register the activity bundle with the global registry 
+        
+        bundle_path -- path to the activity bundle's root directory,
+            that is, the directory with activity/activity.info as a 
+            child of the directory.
+        
+        The bundleregistry.BundleRegistry is responsible for setting 
+        up a set of d-bus service mappings for each available activity.
+        '''
+        registry = bundleregistry.get_registry()
+        return registry.add_bundle(bundle_path)
+
+    @dbus.service.method(_ACTIVITY_REGISTRY_IFACE,
+                         in_signature='s', out_signature='a{sv}')
+    def GetActivity(self, service_name):
+        registry = bundleregistry.get_registry()
+        bundle = registry.get_bundle(service_name)
+        if not bundle:
+            return {}
+        
+        return self._bundle_to_dict(bundle)
+
+    @dbus.service.method(_ACTIVITY_REGISTRY_IFACE,
+                         in_signature='s', out_signature='aa{sv}')
+    def FindActivity(self, name):
+        result = []
+        key = name.lower()
+
+        for bundle in bundleregistry.get_registry():
+            name = bundle.get_name().lower()
+            service_name = bundle.get_service_name().lower()
+            if name.find(key) != -1 or service_name.find(key) != -1:
+                result.append(self._bundle_to_dict(bundle))
+
+        return result
+
+    @dbus.service.method(_ACTIVITY_REGISTRY_IFACE,
+                         in_signature='s', out_signature='aa{sv}')
+    def GetActivitiesForType(self, mime_type):
+        result = []
+        registry = bundleregistry.get_registry()
+        for bundle in registry.get_activities_for_type(mime_type):
+            result.append(self._bundle_to_dict(bundle))
+        return result
+
+    @dbus.service.signal(_ACTIVITY_REGISTRY_IFACE, signature='a{sv}')
+    def ActivityAdded(self, activity_info):
+        pass
+
+    def _bundle_to_dict(self, bundle):
+        return {'name': bundle.get_name(),
+                'icon': bundle.get_icon(),
+                'service_name': bundle.get_service_name(),
+                'path': bundle.get_path()}
+
+    def _bundle_added_cb(self, bundle_registry, bundle):
+        self.ActivityAdded(self._bundle_to_dict(bundle))
+
+_instance = None
+
+def get_instance():
+    global _instance
+    if not _instance:
+        _instance = ActivityRegistry()
+    return _instance
+
@@ -0,0 +1,125 @@
+# Copyright (C) 2006-2007 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import os
+
+import gobject
+
+from sugar.activity.bundle import Bundle
+from sugar import env
+from sugar import util
+
+# http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
+def _get_data_dirs():
+    if os.environ.has_key('XDG_DATA_DIRS'):
+        return os.environ['XDG_DATA_DIRS'].split(':')
+    else:
+        return [ '/usr/local/share/', '/usr/share/' ]
+
+class _ServiceManager(object):
+    """Internal class responsible for creating dbus service files
+    
+    DBUS services are defined in files which bind a service name 
+    to the name of an executable which provides the service name.
+    
+    In Sugar, the service files are automatically generated from 
+    the activity registry (by this class).  When an activity's 
+    dbus launch service is requested, dbus will launch the 
+    specified executable in order to allow it to provide the 
+    requested activity-launching service.
+    
+    In the case of activities which provide a "class", instead of 
+    an "exec" attribute in their activity.info, the 
+    sugar-activity-factory script is used with an appropriate 
+    argument to service that bundle.
+    """
+    SERVICE_DIRECTORY = '~/.local/share/dbus-1/services'
+    def __init__(self):
+        service_dir = os.path.expanduser(self.SERVICE_DIRECTORY)
+        if not os.path.isdir(service_dir):
+            os.makedirs(service_dir)
+
+        self._path = service_dir
+
+    def add(self, bundle):
+        util.write_service(bundle.get_service_name(),
+                           bundle.get_exec(), self._path)
+
+class BundleRegistry(gobject.GObject):
+    """Service that tracks the available activity bundles"""
+
+    __gsignals__ = {
+        'bundle-added': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                        ([gobject.TYPE_PYOBJECT]))
+    }
+
+    def __init__(self):
+        gobject.GObject.__init__(self)
+        
+        self._bundles = {}
+        self._search_path = []
+        self._service_manager = _ServiceManager()
+
+    def get_bundle(self, service_name):
+        """Returns an bundle given his service name"""
+        if self._bundles.has_key(service_name):
+            return self._bundles[service_name]
+        else:
+            return None
+
+    def add_search_path(self, path):
+        """Add a directory to the bundles search path"""
+        self._search_path.append(path)
+        self._scan_directory(path)
+    
+    def __iter__(self):
+        return self._bundles.values().__iter__()
+
+    def _scan_directory(self, path):
+        if os.path.isdir(path):
+            for f in os.listdir(path):
+                bundle_dir = os.path.join(path, f)
+                if os.path.isdir(bundle_dir) and \
+                   bundle_dir.endswith('.activity'):
+                    self.add_bundle(bundle_dir)
+
+    def add_bundle(self, bundle_path):
+        bundle = Bundle(bundle_path)
+        if bundle.is_valid():
+            self._bundles[bundle.get_service_name()] = bundle
+            self._service_manager.add(bundle)
+            self.emit('bundle-added', bundle)
+            return True
+        else:
+            return False
+
+    def get_activities_for_type(self, mime_type):
+        result = []
+        for bundle in self._bundles.values():
+            if bundle.get_mime_types() and mime_type in bundle.get_mime_types():
+                result.append(bundle)
+        return result
+
+def get_registry():
+    return _bundle_registry
+
+_bundle_registry = BundleRegistry()
+
+for path in _get_data_dirs():
+    bundles_path = os.path.join(path, 'activities')
+    _bundle_registry.add_search_path(bundles_path)
+
+_bundle_registry.add_search_path(env.get_user_activities_path())
@@ -19,9 +19,9 @@ import logging
 import urlparse

 from sugar.objects import mime
-from sugar import activity

 import objecttypeservice
+import bundleregistry

 class ClipboardObject:

@@ -66,30 +66,15 @@ class ClipboardObject:
        return ''

    def get_activity(self):
-        logging.debug('get_activity')
-        mapping = {'text/html'        : 'org.laptop.WebActivity',
-                   'image/jpeg'       : 'org.laptop.WebActivity',
-                   'image/gif'        : 'org.laptop.WebActivity',
-                   'image/png'        : 'org.laptop.WebActivity',
-                   'text/plain'       : 'org.laptop.AbiWordActivity',
-                   'text/rtf'         : 'org.laptop.AbiWordActivity',
-                   'text/richtext'    : 'org.laptop.AbiWordActivity',
-                   'application/pdf'  : 'org.laptop.sugar.ReadActivity',
-                   'application/x-squeak-project' : 'org.vpri.EtoysActivity'}
        mime = self.get_mime_type()
        if not mime:
            return ''
-        """
-        registry = activity.get_registry()
+
+        registry = bundleregistry.get_registry()
        activities = registry.get_activities_for_type(self.get_mime_type())
        # TODO: should we return several activities?
        if activities:
-            return activities[0]
-        else:
-            return ''
-        """
-        if mapping.has_key(mime):
-            return mapping[mime]
+            return activities[0].get_service_name()
        else:
            return ''

@@ -101,8 +86,6 @@ class ClipboardObject:
    
    def add_format(self, format):
        self._formats[format.get_type()] = format
-        # We want to get the activity early in order to prevent a DBus lockup.
-        activity = self.get_activity()
    
    def get_formats(self):
        return self._formats
@@ -74,7 +74,7 @@ class ClipboardService(dbus.service.Object):
    def add_object_format(self, object_path, format_type, data, on_disk):
        logging.debug('ClipboardService.add_object_format')
        cb_object = self._objects[str(object_path)]
-        
+
        if on_disk and cb_object.get_percent() == 100:
            new_uri = self._copy_file(data)
            cb_object.add_format(Format(format_type, new_uri, on_disk))
@@ -0,0 +1,4 @@
+[D-BUS Service]
+Name = org.laptop.ActivityRegistry
+Exec = @bindir@/sugar-clipboard
+
@@ -34,6 +34,7 @@ sys.path.append(env.get_service_path('clipboard'))

 import clipboardservice
 import objecttypeservice
+import activityregistryservice

 logging.info('Starting clipboard service.')

@@ -42,9 +43,11 @@ dbus.glib.threads_init()

 clipboard_service = clipboardservice.get_instance()
 object_type_registry = objecttypeservice.get_instance()
+activity_registry = activityregistryservice.get_instance()

 loop = gobject.MainLoop()
 try:
    loop.run()
 except KeyboardInterrupt:
    print 'Ctrl+C pressed, exiting...'
+