857 lines
32 KiB
Python
857 lines
32 KiB
Python
"""Base class for activities written in Python
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This is currently the only definitive reference for what an
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activity must do to participate in the Sugar desktop.
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A Basic Activity
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All activities must implement a class derived from 'Activity' in this class.
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The convention is to call it ActivitynameActivity, but this is not required as
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the activity.info file associated with your activity will tell the sugar-shell
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which class to start.
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For example the most minimal Activity:
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from sugar.activity import activity
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class ReadActivity(activity.Activity):
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pass
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To get a real, working activity, you will at least have to implement:
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__init__(), read_file() and write_file()
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Aditionally, you will probably need a at least a Toolbar so you can have some
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interesting buttons for the user, like for example 'exit activity'
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See the methods of the Activity class below for more information on what you
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will need for a real activity.
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"""
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# Copyright (C) 2006-2007 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library 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 GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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from gettext import gettext as _
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import logging
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import os
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import time
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import tempfile
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from hashlib import sha1
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import gtk, gobject
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import dbus
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import json
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from sugar import util
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from sugar.presence import presenceservice
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from sugar.activity.activityservice import ActivityService
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from sugar.graphics import style
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from sugar.graphics.window import Window
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from sugar.graphics.toolbox import Toolbox
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from sugar.graphics.toolbutton import ToolButton
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from sugar.graphics.toolcombobox import ToolComboBox
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from sugar.datastore import datastore
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from sugar import wm
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from sugar import profile
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from sugar import _sugarbaseext
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SCOPE_PRIVATE = "private"
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SCOPE_INVITE_ONLY = "invite" # shouldn't be shown in UI, it's implicit when you invite somebody
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SCOPE_NEIGHBORHOOD = "public"
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class ActivityToolbar(gtk.Toolbar):
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"""The Activity toolbar with the Journal entry title, sharing, Keep and Stop buttons
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All activities should have this toolbar. It is easiest to add it to your
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Activity by using the ActivityToolbox.
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"""
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def __init__(self, activity):
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gtk.Toolbar.__init__(self)
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self._activity = activity
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self._updating_share = False
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activity.connect('shared', self.__activity_shared_cb)
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activity.connect('joined', self.__activity_shared_cb)
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activity.connect('notify::max_participants',
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self.__max_participants_changed_cb)
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if activity.metadata:
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self.title = gtk.Entry()
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self.title.set_size_request(int(gtk.gdk.screen_width() / 6), -1)
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self.title.set_text(activity.metadata['title'])
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self.title.connect('changed', self.__title_changed_cb)
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self._add_widget(self.title)
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activity.metadata.connect('updated', self.__jobject_updated_cb)
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separator = gtk.SeparatorToolItem()
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separator.props.draw = False
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separator.set_expand(True);
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self.insert(separator, -1)
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separator.show()
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self.share = ToolComboBox(label_text=_('Share with:'))
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self.share.combo.connect('changed', self.__share_changed_cb)
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self.share.combo.append_item(SCOPE_PRIVATE, _('Private'), 'zoom-home')
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self.share.combo.append_item(SCOPE_NEIGHBORHOOD, _('My Neighborhood'),
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'zoom-neighborhood')
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self.insert(self.share, -1)
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self.share.show()
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self._update_share()
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self.keep = ToolButton('document-save')
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self.keep.set_tooltip(_('Keep'))
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self.keep.connect('clicked', self.__keep_clicked_cb)
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self.insert(self.keep, -1)
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self.keep.show()
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self.stop = ToolButton('activity-stop')
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self.stop.set_tooltip(_('Stop'))
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self.stop.connect('clicked', self.__stop_clicked_cb)
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self.insert(self.stop, -1)
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self.stop.show()
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self._update_title_sid = None
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def _update_share(self):
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self._updating_share = True
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if self._activity.props.max_participants == 1:
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self.share.hide()
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if self._activity.get_shared():
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self.share.set_sensitive(False)
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self.share.combo.set_active(1)
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else:
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self.share.set_sensitive(True)
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self.share.combo.set_active(0)
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self._updating_share = False
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def __share_changed_cb(self, combo):
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if self._updating_share:
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return
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model = self.share.combo.get_model()
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it = self.share.combo.get_active_iter()
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(scope, ) = model.get(it, 0)
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if scope == SCOPE_NEIGHBORHOOD:
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self._activity.share()
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def __keep_clicked_cb(self, button):
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self._activity.copy()
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def __stop_clicked_cb(self, button):
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self._activity.take_screenshot()
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self._activity.close()
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def __jobject_updated_cb(self, jobject):
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self.title.set_text(jobject['title'])
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def __title_changed_cb(self, entry):
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if not self._update_title_sid:
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self._update_title_sid = gobject.timeout_add(1000, self.__update_title_cb)
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def __update_title_cb(self):
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title = self.title.get_text()
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self._activity.metadata['title'] = title
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self._activity.metadata['title_set_by_user'] = '1'
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self._activity.save()
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shared_activity = self._activity._shared_activity
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if shared_activity:
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shared_activity.props.name = title
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self._update_title_sid = None
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return False
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def _add_widget(self, widget, expand=False):
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tool_item = gtk.ToolItem()
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tool_item.set_expand(expand)
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tool_item.add(widget)
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widget.show()
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self.insert(tool_item, -1)
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tool_item.show()
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def __activity_shared_cb(self, activity):
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self._update_share()
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def __max_participants_changed_cb(self, activity, pspec):
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self._update_share()
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class EditToolbar(gtk.Toolbar):
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"""Provides the standard edit toolbar for Activities.
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Members:
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undo -- the undo button
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redo -- the redo button
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copy -- the copy button
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paste -- the paste button
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separator -- A separator between undo/redo and copy/paste
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This class only provides the 'edit' buttons in a standard layout, your activity
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will need to either hide buttons which make no sense for your Activity, or you
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need to connect the button events to your own callbacks:
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## Example from Read.activity:
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# Create the edit toolbar:
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self._edit_toolbar = EditToolbar(self._view)
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# Hide undo and redo, they're not needed
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self._edit_toolbar.undo.props.visible = False
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self._edit_toolbar.redo.props.visible = False
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# Hide the separator too:
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self._edit_toolbar.separator.props.visible = False
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# As long as nothing is selected, copy needs to be insensitive:
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self._edit_toolbar.copy.set_sensitive(False)
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# When the user clicks the button, call _edit_toolbar_copy_cb()
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self._edit_toolbar.copy.connect('clicked', self._edit_toolbar_copy_cb)
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# Add the edit toolbar:
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toolbox.add_toolbar(_('Edit'), self._edit_toolbar)
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# And make it visible:
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self._edit_toolbar.show()
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"""
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def __init__(self):
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gtk.Toolbar.__init__(self)
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self.undo = ToolButton('edit-undo')
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self.undo.set_tooltip(_('Undo'))
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self.insert(self.undo, -1)
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self.undo.show()
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self.redo = ToolButton('edit-redo')
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self.redo.set_tooltip(_('Redo'))
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self.insert(self.redo, -1)
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self.redo.show()
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self.separator = gtk.SeparatorToolItem()
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self.separator.set_draw(True)
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self.insert(self.separator, -1)
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self.separator.show()
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self.copy = ToolButton('edit-copy')
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self.copy.set_tooltip(_('Copy'))
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self.insert(self.copy, -1)
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self.copy.show()
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self.paste = ToolButton('edit-paste')
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self.paste.set_tooltip(_('Paste'))
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self.insert(self.paste, -1)
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self.paste.show()
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class ActivityToolbox(Toolbox):
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"""Creates the Toolbox for the Activity
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By default, the toolbox contains only the ActivityToolbar. After creating the
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toolbox, you can add your activity specific toolbars, for example the
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EditToolbar.
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To add the ActivityToolbox to your Activity in MyActivity.__init__() do:
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# Create the Toolbar with the ActivityToolbar:
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toolbox = activity.ActivityToolbox(self)
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... your code, inserting all other toolbars you need, like EditToolbar ...
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# Add the toolbox to the activity frame:
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self.set_toolbox(toolbox)
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# And make it visible:
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toolbox.show()
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"""
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def __init__(self, activity):
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Toolbox.__init__(self)
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self._activity_toolbar = ActivityToolbar(activity)
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self.add_toolbar('Activity', self._activity_toolbar)
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self._activity_toolbar.show()
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def get_activity_toolbar(self):
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return self._activity_toolbar
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class Activity(Window, gtk.Container):
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"""This is the base Activity class that all other Activities derive from. This is where your activity starts.
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To get a working Activity:
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0. Derive your Activity from this class:
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class MyActivity(activity.Activity):
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...
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1. implement an __init__() method for your Activity class.
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Use your init method to create your own ActivityToolbar which will
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contain some standard buttons:
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toolbox = activity.ActivityToolbox(self)
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Add extra Toolbars to your toolbox.
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You should setup Activity sharing here too.
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Finaly, your Activity may need some resources which you can claim
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here too.
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The __init__() method is also used to make the distinction between
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being resumed from the Journal, or starting with a blank document.
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2. Implement read_file() and write_file()
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Most activities revolve around creating and storing Journal entries.
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For example, Write: You create a document, it is saved to the Journal
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and then later you resume working on the document.
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read_file() and write_file() will be called by sugar to tell your
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Activity that it should load or save the document the user is working
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on.
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3. Implement our Activity Toolbars.
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The Toolbars are added to your Activity in step 1 (the toolbox), but
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you need to implement them somewhere. Now is a good time.
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There are a number of standard Toolbars. The most basic one, the one
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your almost absolutely MUST have is the ActivityToolbar. Without
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this, you're not really making a proper Sugar Activity (which may be
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okay, but you should really stop and think about why not!) You do
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this with the ActivityToolbox(self) call in step 1.
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Usually, you will also need the standard EditToolbar. This is the one
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which has the standard copy and paste buttons. You need to derive
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your own EditToolbar class from sugar.EditToolbar:
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class EditToolbar(activity.EditToolbar):
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...
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See EditToolbar for the methods you should implement in your class.
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Finaly, your Activity will very likely need some activity specific
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buttons and options you can create your own toolbars by deriving a
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class from gtk.Toolbar:
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class MySpecialToolbar(gtk.Toolbar):
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...
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4. Use your creativity. Make your Activity something special and share
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it with your friends!
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Read through the methods of the Activity class below, to learn more about
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how to make an Activity work.
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Hint: A good and simple Activity to learn from is the Read activity. To
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create your own activity, you may want to copy it and use it as a template.
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"""
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__gtype_name__ = 'SugarActivity'
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__gsignals__ = {
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'shared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([])),
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'joined': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
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}
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__gproperties__ = {
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'active' : (bool, None, None, False,
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gobject.PARAM_READWRITE),
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'max-participants': (int, None, None, 0, 1000, 0,
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gobject.PARAM_READWRITE)
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}
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def __init__(self, handle, create_jobject=True):
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"""Initialise the Activity
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handle -- sugar.activity.activityhandle.ActivityHandle
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instance providing the activity id and access to the
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presence service which *may* provide sharing for this
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application
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create_jobject -- boolean
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define if it should create a journal object if we are
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not resuming
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Side effects:
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Sets the gdk screen DPI setting (resolution) to the
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Sugar screen resolution.
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Connects our "destroy" message to our _destroy_cb
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method.
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Creates a base gtk.Window within this window.
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Creates an ActivityService (self._bus) servicing
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this application.
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Usage:
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If your Activity implements __init__(), it should call
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the base class __init()__ before doing Activity specific things.
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"""
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Window.__init__(self)
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# process titles will only show 15 characters
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# but they get truncated anyway so if more characters
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# are supported in the future we will get a better view
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# of the processes
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proc_title = "%s <%s>" % (get_bundle_name(), handle.activity_id)
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util.set_proc_title(proc_title)
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self.connect('realize', self.__realize_cb)
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self.connect('delete-event', self.__delete_event_cb)
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self._active = False
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self._activity_id = handle.activity_id
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self._pservice = presenceservice.get_instance()
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self._shared_activity = None
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self._share_id = None
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self._join_id = None
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self._preview = None
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self._updating_jobject = False
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self._closing = False
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self._deleting = False
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self._max_participants = 0
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self._invites_queue = []
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self._bus = ActivityService(self)
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self._owns_file = False
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share_scope = SCOPE_PRIVATE
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if handle.object_id:
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self._jobject = datastore.get(handle.object_id)
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# TODO: Don't create so many objects until we have versioning
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# support in the datastore
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#self._jobject.object_id = ''
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#del self._jobject.metadata['ctime']
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del self._jobject.metadata['mtime']
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self.set_title(self._jobject.metadata['title'])
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if self._jobject.metadata.has_key('share-scope'):
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share_scope = self._jobject.metadata['share-scope']
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elif create_jobject:
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logging.debug('Creating a jobject.')
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self._jobject = datastore.create()
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self._jobject.metadata['title'] = _('%s Activity') % get_bundle_name()
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self.set_title(self._jobject.metadata['title'])
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self._jobject.metadata['title_set_by_user'] = '0'
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self._jobject.metadata['activity'] = self.get_bundle_id()
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self._jobject.metadata['activity_id'] = self.get_id()
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self._jobject.metadata['keep'] = '0'
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self._jobject.metadata['preview'] = ''
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self._jobject.metadata['share-scope'] = SCOPE_PRIVATE
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if self._shared_activity is not None:
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icon_color = self._shared_activity.props.color
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else:
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icon_color = profile.get_color().to_string()
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self._jobject.metadata['icon-color'] = icon_color
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self._jobject.file_path = ''
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# Cannot call datastore.write async for creates: https://dev.laptop.org/ticket/3071
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datastore.write(self._jobject)
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else:
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self._jobject = None
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# handle activity share/join
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mesh_instance = self._pservice.get_activity(self._activity_id,
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warn_if_none=False)
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logging.debug("*** Act %s, mesh instance %r, scope %s",
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self._activity_id, mesh_instance, share_scope)
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if mesh_instance is not None:
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# There's already an instance on the mesh, join it
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logging.debug("*** Act %s joining existing mesh instance %r", self._activity_id, mesh_instance)
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self._shared_activity = mesh_instance
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self._shared_activity.connect('notify::private',
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self.__privacy_changed_cb)
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self._join_id = self._shared_activity.connect("joined", self.__joined_cb)
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if not self._shared_activity.props.joined:
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self._shared_activity.join()
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else:
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self.__joined_cb(self._shared_activity, True, None)
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elif share_scope != SCOPE_PRIVATE:
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logging.debug("*** Act %s no existing mesh instance, but used to be shared, will share" % self._activity_id)
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# no existing mesh instance, but activity used to be shared, so
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# restart the share
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if share_scope == SCOPE_INVITE_ONLY:
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self.share(private=True)
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elif share_scope == SCOPE_NEIGHBORHOOD:
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self.share(private=False)
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else:
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logging.debug("Unknown share scope %r" % share_scope)
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def do_set_property(self, pspec, value):
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if pspec.name == 'active':
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if self._active != value:
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self._active = value
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if not self._active and self._jobject:
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self.save()
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elif pspec.name == 'max-participants':
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self._max_participants = value
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def do_get_property(self, pspec):
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if pspec.name == 'active':
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return self._active
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elif pspec.name == 'max-participants':
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return self._max_participants
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def get_id(self):
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"""Returns the activity id of the current instance of your activity.
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The activity id is sort-of-like the unix process id (PID). However,
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unlike PIDs it is only different for each new instance (with
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create_jobject = True set) and stays the same everytime a user
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resumes an activity. This is also the identity of your Activity to other
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XOs for use when sharing.
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"""
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return self._activity_id
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|
|
def get_bundle_id(self):
|
|
"""Returns the bundle_id from the activity.info file"""
|
|
return os.environ['SUGAR_BUNDLE_ID']
|
|
|
|
def set_canvas(self, canvas):
|
|
"""Sets the 'work area' of your activity with the canvas of your choice.
|
|
|
|
One commonly used canvas is gtk.ScrolledWindow
|
|
"""
|
|
Window.set_canvas(self, canvas)
|
|
canvas.connect('map', self.__canvas_map_cb)
|
|
|
|
def __canvas_map_cb(self, canvas):
|
|
if self._jobject and self._jobject.file_path:
|
|
self.read_file(self._jobject.file_path)
|
|
|
|
def __jobject_create_cb(self):
|
|
pass
|
|
|
|
def __jobject_error_cb(self, err):
|
|
logging.debug("Error creating activity datastore object: %s" % err)
|
|
|
|
def get_activity_root(self):
|
|
"""Returns a path for saving Activity specific preferences, etc.
|
|
|
|
Returns a path to the location in the filesystem where the activity can
|
|
store activity related data that doesn't pertain to the current
|
|
execution of the activity and thus cannot go into the DataStore.
|
|
|
|
Currently, this will return something like ~/.sugar/default/MyActivityName/
|
|
|
|
Activities should ONLY save settings, user preferences and other data
|
|
which isn't specific to a journal item here. If (meta-)data is in anyway
|
|
specific to a journal entry, it MUST be stored in the DataStore.
|
|
"""
|
|
if os.environ.has_key('SUGAR_ACTIVITY_ROOT') and \
|
|
os.environ['SUGAR_ACTIVITY_ROOT']:
|
|
return os.environ['SUGAR_ACTIVITY_ROOT']
|
|
else:
|
|
return '/'
|
|
|
|
def read_file(self, file_path):
|
|
"""
|
|
Subclasses implement this method if they support resuming objects from
|
|
the journal. 'file_path' is the file to read from.
|
|
|
|
You should immediately open the file from the file_path, because the
|
|
file_name will be deleted immediately after returning from read_file().
|
|
Once the file has been opened, you do not have to read it immediately:
|
|
After you have opened it, the file will only be really gone when you
|
|
close it.
|
|
|
|
Although not required, this is also a good time to read all meta-data:
|
|
the file itself cannot be changed externally, but the title, description
|
|
and other metadata['tags'] may change. So if it is important for you to
|
|
notice changes, this is the time to record the originals.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def write_file(self, file_path):
|
|
"""
|
|
Subclasses implement this method if they support saving data to objects
|
|
in the journal. 'file_path' is the file to write to.
|
|
|
|
If the user did make changes, you should create the file_path and save
|
|
all document data to it.
|
|
|
|
Additionally, you should also write any metadata needed to resume your
|
|
activity. For example, the Read activity saves the current page and zoom
|
|
level, so it can display the page.
|
|
|
|
Note: Currently, the file_path *WILL* be different from the one you
|
|
received in file_read(). Even if you kept the file_path from file_read()
|
|
open until now, you must still write the entire file to this file_path.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def __save_cb(self):
|
|
logging.debug('Activity.__save_cb')
|
|
self._updating_jobject = False
|
|
if self._closing:
|
|
self._cleanup_jobject()
|
|
self.destroy()
|
|
|
|
def __save_error_cb(self, err):
|
|
logging.debug('Activity.__save_error_cb')
|
|
self._updating_jobject = False
|
|
if self._closing:
|
|
self._cleanup_jobject()
|
|
self.destroy()
|
|
logging.debug("Error saving activity object to datastore: %s" % err)
|
|
|
|
def _cleanup_jobject(self):
|
|
if self._jobject:
|
|
if self._owns_file and os.path.isfile(self._jobject.file_path):
|
|
logging.debug('_cleanup_jobject: removing %r' % self._jobject.file_path)
|
|
os.remove(self._jobject.file_path)
|
|
self._owns_file = False
|
|
self._jobject.destroy()
|
|
self._jobject = None
|
|
|
|
def _get_preview(self):
|
|
preview_pixbuf = self.get_canvas_screenshot()
|
|
if preview_pixbuf is None:
|
|
return None
|
|
preview_pixbuf = preview_pixbuf.scale_simple(style.zoom(300),
|
|
style.zoom(225),
|
|
gtk.gdk.INTERP_BILINEAR)
|
|
|
|
# TODO: Find a way of taking a png out of the pixbuf without saving to a temp file.
|
|
# Impementing gtk.gdk.Pixbuf.save_to_buffer in pygtk would solve this.
|
|
fd, file_path = tempfile.mkstemp('.png')
|
|
del fd
|
|
preview_pixbuf.save(file_path, 'png')
|
|
f = open(file_path)
|
|
try:
|
|
preview_data = f.read()
|
|
finally:
|
|
f.close()
|
|
os.remove(file_path)
|
|
|
|
return preview_data
|
|
|
|
def _get_buddies(self):
|
|
if self._shared_activity is not None:
|
|
buddies = {}
|
|
for buddy in self._shared_activity.get_joined_buddies():
|
|
if not buddy.props.owner:
|
|
buddy_id = sha1(buddy.props.key).hexdigest()
|
|
buddies[buddy_id] = [buddy.props.nick, buddy.props.color]
|
|
return buddies
|
|
else:
|
|
return {}
|
|
|
|
def take_screenshot(self):
|
|
self._preview = self._get_preview()
|
|
|
|
def save(self):
|
|
"""Request that the activity is saved to the Journal.
|
|
|
|
This method is called by the close() method below. In general,
|
|
activities should not override this method. This method is part of the
|
|
public API of an Acivity, and should behave in standard ways. Use your
|
|
own implementation of write_file() to save your Activity specific data.
|
|
"""
|
|
|
|
logging.debug('Activity.save: %r' % self._jobject.object_id)
|
|
|
|
if self._updating_jobject:
|
|
logging.info('Activity.save: still processing a previous request.')
|
|
return
|
|
|
|
buddies_dict = self._get_buddies()
|
|
if buddies_dict:
|
|
self.metadata['buddies_id'] = json.write(buddies_dict.keys())
|
|
self.metadata['buddies'] = json.write(self._get_buddies())
|
|
|
|
if self._preview is None:
|
|
self.metadata['preview'] = ''
|
|
else:
|
|
self.metadata['preview'] = dbus.ByteArray(self._preview)
|
|
|
|
try:
|
|
if self._jobject.file_path:
|
|
self.write_file(self._jobject.file_path)
|
|
else:
|
|
file_path = os.path.join(self.get_activity_root(), 'data',
|
|
'%i' % time.time())
|
|
self.write_file(file_path)
|
|
self._owns_file = True
|
|
self._jobject.file_path = file_path
|
|
except NotImplementedError:
|
|
pass
|
|
|
|
# Cannot call datastore.write async for creates: https://dev.laptop.org/ticket/3071
|
|
if self._jobject.object_id is None:
|
|
datastore.write(self._jobject, transfer_ownership=True)
|
|
else:
|
|
self._updating_jobject = True
|
|
datastore.write(self._jobject,
|
|
transfer_ownership=True,
|
|
reply_handler=self.__save_cb,
|
|
error_handler=self.__save_error_cb)
|
|
|
|
def copy(self):
|
|
"""Request that the activity 'Keep in Journal' the current state of the activity.
|
|
|
|
Activities should not override this method. Instead, like save() do any
|
|
copy work that needs to be done in write_file()
|
|
"""
|
|
logging.debug('Activity.copy: %r' % self._jobject.object_id)
|
|
self._preview = self._get_preview()
|
|
self.save()
|
|
self._jobject.object_id = None
|
|
|
|
def __privacy_changed_cb(self, shared_activity, param_spec):
|
|
if shared_activity.props.private:
|
|
self._jobject.metadata['share-scope'] = SCOPE_INVITE_ONLY
|
|
else:
|
|
self._jobject.metadata['share-scope'] = SCOPE_NEIGHBORHOOD
|
|
|
|
def __joined_cb(self, activity, success, err):
|
|
"""Callback when join has finished"""
|
|
self._shared_activity.disconnect(self._join_id)
|
|
self._join_id = None
|
|
if not success:
|
|
logging.debug("Failed to join activity: %s" % err)
|
|
return
|
|
|
|
self.present()
|
|
self.emit('joined')
|
|
self.__privacy_changed_cb(self._shared_activity, None)
|
|
|
|
def get_shared(self):
|
|
"""Returns TRUE if the activity is shared on the mesh."""
|
|
if not self._shared_activity:
|
|
return False
|
|
return self._shared_activity.props.joined
|
|
|
|
def __share_cb(self, ps, success, activity, err):
|
|
self._pservice.disconnect(self._share_id)
|
|
self._share_id = None
|
|
if not success:
|
|
logging.debug('Share of activity %s failed: %s.' % (self._activity_id, err))
|
|
return
|
|
|
|
logging.debug('Share of activity %s successful, PS activity is %r.',
|
|
self._activity_id, activity)
|
|
|
|
activity.props.name = self._jobject.metadata['title']
|
|
|
|
self._shared_activity = activity
|
|
self._shared_activity.connect('notify::private',
|
|
self.__privacy_changed_cb)
|
|
self.emit('shared')
|
|
self.__privacy_changed_cb(self._shared_activity, None)
|
|
|
|
self._send_invites()
|
|
|
|
def _invite_response_cb(self, error):
|
|
if error:
|
|
logging.error('Invite failed: %s' % error)
|
|
|
|
def _send_invites(self):
|
|
while self._invites_queue:
|
|
buddy_key = self._invites_queue.pop()
|
|
buddy = self._pservice.get_buddy(buddy_key)
|
|
if buddy:
|
|
self._shared_activity.invite(buddy, '', self._invite_response_cb)
|
|
else:
|
|
logging.error('Cannot invite %s, no such buddy.' % buddy_key)
|
|
|
|
def invite(self, buddy_key):
|
|
"""Invite a buddy to join this Activity.
|
|
|
|
Side Effects:
|
|
Calls self.share(True) to privately share the activity if it wasn't
|
|
shared before.
|
|
"""
|
|
self._invites_queue.append(buddy_key)
|
|
|
|
if (self._shared_activity is None
|
|
or not self._shared_activity.props.joined):
|
|
self.share(True)
|
|
else:
|
|
self._send_invites()
|
|
|
|
def share(self, private=False):
|
|
"""Request that the activity be shared on the network.
|
|
|
|
private -- bool: True to share by invitation only,
|
|
False to advertise as shared to everyone.
|
|
|
|
Once the activity is shared, its privacy can be changed by setting
|
|
its 'private' property.
|
|
"""
|
|
if self._shared_activity and self._shared_activity.props.joined:
|
|
raise RuntimeError("Activity %s already shared." %
|
|
self._activity_id)
|
|
verb = private and 'private' or 'public'
|
|
logging.debug('Requesting %s share of activity %s.' %
|
|
(verb, self._activity_id))
|
|
self._share_id = self._pservice.connect("activity-shared",
|
|
self.__share_cb)
|
|
self._pservice.share_activity(self, private=private)
|
|
|
|
def close(self):
|
|
"""Request that the activity be stopped and saved to the Journal
|
|
|
|
Activities should not override this method, but should implement write_file() to
|
|
do any state saving instead.
|
|
"""
|
|
self.save()
|
|
|
|
if self._shared_activity:
|
|
self._shared_activity.leave()
|
|
|
|
if self._updating_jobject:
|
|
self._closing = True
|
|
else:
|
|
self.destroy()
|
|
|
|
def __realize_cb(self, window):
|
|
wm.set_bundle_id(window.window, self.get_bundle_id())
|
|
wm.set_activity_id(window.window, str(self._activity_id))
|
|
|
|
def __delete_event_cb(self, widget, event):
|
|
self.close()
|
|
return True
|
|
|
|
def get_metadata(self):
|
|
"""Returns the jobject metadata or None if there is no jobject.
|
|
|
|
Activities can set metadata in write_file() using:
|
|
self.metadata['MyKey'] = "Something"
|
|
|
|
and retrieve metadata in read_file() using:
|
|
self.metadata.get('MyKey', 'aDefaultValue')
|
|
|
|
Note: Make sure your activity works properly if one or more of the
|
|
metadata items is missing. Never assume they will all be present.
|
|
"""
|
|
if self._jobject:
|
|
return self._jobject.metadata
|
|
else:
|
|
return None
|
|
|
|
metadata = property(get_metadata, None)
|
|
|
|
def get_bundle_name():
|
|
"""Return the bundle name for the current process' bundle"""
|
|
return os.environ['SUGAR_BUNDLE_NAME']
|
|
|
|
def get_bundle_path():
|
|
"""Return the bundle path for the current process' bundle"""
|
|
return os.environ['SUGAR_BUNDLE_PATH']
|
|
|