|
|
""" A KernelManager that provides channels that use signals and slots.
|
|
|
"""
|
|
|
|
|
|
# System library imports.
|
|
|
from PyQt4 import QtCore
|
|
|
|
|
|
# IPython imports.
|
|
|
from IPython.zmq.kernelmanager import KernelManager, SubSocketChannel, \
|
|
|
XReqSocketChannel, RepSocketChannel
|
|
|
|
|
|
|
|
|
class QtSubSocketChannel(SubSocketChannel, QtCore.QObject):
|
|
|
|
|
|
# Emitted when any message is received.
|
|
|
message_received = QtCore.pyqtSignal(object)
|
|
|
|
|
|
# Emitted when a message of type 'pyout' or 'stdout' is received.
|
|
|
output_received = QtCore.pyqtSignal(object)
|
|
|
|
|
|
# Emitted when a message of type 'pyerr' or 'stderr' is received.
|
|
|
error_received = QtCore.pyqtSignal(object)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'object' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def __init__(self, *args, **kw):
|
|
|
""" Reimplemented to ensure that QtCore.QObject is initialized first.
|
|
|
"""
|
|
|
QtCore.QObject.__init__(self)
|
|
|
SubSocketChannel.__init__(self, *args, **kw)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'SubSocketChannel' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def call_handlers(self, msg):
|
|
|
""" Reimplemented to emit signals instead of making callbacks.
|
|
|
"""
|
|
|
# Emit the generic signal.
|
|
|
self.message_received.emit(msg)
|
|
|
|
|
|
# Emit signals for specialized message types.
|
|
|
msg_type = msg['msg_type']
|
|
|
if msg_type in ('pyout', 'stdout'):
|
|
|
self.output_received.emit(msg)
|
|
|
elif msg_type in ('pyerr', 'stderr'):
|
|
|
self.error_received.emit(msg)
|
|
|
|
|
|
|
|
|
class QtXReqSocketChannel(XReqSocketChannel, QtCore.QObject):
|
|
|
|
|
|
# Emitted when any message is received.
|
|
|
message_received = QtCore.pyqtSignal(object)
|
|
|
|
|
|
# Emitted when a reply has been received for the corresponding request type.
|
|
|
execute_reply = QtCore.pyqtSignal(object)
|
|
|
complete_reply = QtCore.pyqtSignal(object)
|
|
|
object_info_reply = QtCore.pyqtSignal(object)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'object' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def __init__(self, *args, **kw):
|
|
|
""" Reimplemented to ensure that QtCore.QObject is initialized first.
|
|
|
"""
|
|
|
QtCore.QObject.__init__(self)
|
|
|
XReqSocketChannel.__init__(self, *args, **kw)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'XReqSocketChannel' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def call_handlers(self, msg):
|
|
|
""" Reimplemented to emit signals instead of making callbacks.
|
|
|
"""
|
|
|
# Emit the generic signal.
|
|
|
self.message_received.emit(msg)
|
|
|
|
|
|
# Emit signals for specialized message types.
|
|
|
msg_type = msg['msg_type']
|
|
|
signal = getattr(self, msg_type, None)
|
|
|
if signal:
|
|
|
signal.emit(msg)
|
|
|
|
|
|
def _queue_request(self, msg, callback):
|
|
|
""" Reimplemented to skip callback handling.
|
|
|
"""
|
|
|
self.command_queue.put(msg)
|
|
|
|
|
|
|
|
|
class QtRepSocketChannel(RepSocketChannel, QtCore.QObject):
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'object' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def __init__(self, *args, **kw):
|
|
|
""" Reimplemented to ensure that QtCore.QObject is initialized first.
|
|
|
"""
|
|
|
QtCore.QObject.__init__(self)
|
|
|
RepSocketChannel.__init__(self, *args, **kw)
|
|
|
|
|
|
|
|
|
class QtKernelManager(KernelManager):
|
|
|
""" A KernelManager that provides channels that use signals and slots.
|
|
|
"""
|
|
|
|
|
|
sub_channel_class = QtSubSocketChannel
|
|
|
xreq_channel_class = QtXReqSocketChannel
|
|
|
rep_channel_class = QtRepSocketChannel
|
|
|
|
