forked from openlp/openlp
86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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OpenLP - Open Source Lyrics Projection
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Copyright (c) 2008 Raoul Snyman
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Portions copyright (c) 2008-2009 Martin Thompson, Tim Bentley,
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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import logging
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from PyQt4 import QtCore
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class EventReceiver(QtCore.QObject):
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"""
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Class to allow events to be passed from different parts of the system.
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This is a private class and should not be used directly but via the Receiver class
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``stop_import``
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Stops the Bible Import
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``pre_load_bibles``
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Triggers the plugin to relaod the bible lists
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``process_events``
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Requests the Application to flush the events queue
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``{preview|live}_slide_first``
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display the first slide on the list
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``{preview|live}_slide_previous``
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display the previous slide on the list
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``{preview|live}_slide_next``
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display the next slide on the list
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``{preview|live}_slide_last``
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display the last slide on the list
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``{plugin}_add_service_item ``
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ask the plugin to push the selected items to the service item
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``update_themes ``
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send out message with new themes
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``update_global_theme ``
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Tell the components we have a new global theme
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``load_song_list``
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Tells the the song plugin to reload the song list
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"""
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global log
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log = logging.getLogger(u'EventReceiver')
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def __init__(self):
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QtCore.QObject.__init__(self)
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def send_message(self, event, msg=None):
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log.debug(u'Event %s passed with payload %s' % (event, msg))
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self.emit(QtCore.SIGNAL(event), msg)
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class Receiver():
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"""
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Class to allow events to be passed from different parts of the system.
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This is a static wrapper around the EventReceiver class.
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As there is only one instance of it in the systems the QT signal/slot architecture
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can send messages across the system
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``Send message``
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Receiver().send_message(u'<<Message ID>>', data)
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``Receive Message``
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QtCore.QObject.connect(Receiver().get_receiver(),QtCore.SIGNAL(u'<<Message ID>>'),<<ACTION>>)
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"""
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eventreceiver = EventReceiver()
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@staticmethod
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def send_message(event, msg=None):
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Receiver.eventreceiver.send_message(event, msg)
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@staticmethod
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def get_receiver():
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return Receiver.eventreceiver
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