##// END OF EJS Templates
cleanup kernelspec loading...
cleanup kernelspec loading - kernel_selector.set_kernel validates selection and triggers 'spec_changed.Kernel'. It does not start the session anymore. - notebook calls kernel_selector.set_kernel when: - kernelspec is in notebook metadata - session is loaded (e.g. no kernelspec metadata) - notebook starts session, loads metadata on spec_changed.kernel The only case where starting the session is not triggered by spec_changed is on notebook load with no kernel metadata

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kernel_mixins.py
50 lines | 1.6 KiB | text/x-python | PythonLexer
"""Defines a KernelManager that provides signals and slots."""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
from IPython.external.qt import QtCore
from IPython.utils.traitlets import HasTraits, Type
from .util import MetaQObjectHasTraits, SuperQObject
class QtKernelRestarterMixin(MetaQObjectHasTraits('NewBase', (HasTraits, SuperQObject), {})):
_timer = None
class QtKernelManagerMixin(MetaQObjectHasTraits('NewBase', (HasTraits, SuperQObject), {})):
""" A KernelClient that provides signals and slots.
"""
kernel_restarted = QtCore.Signal()
class QtKernelClientMixin(MetaQObjectHasTraits('NewBase', (HasTraits, SuperQObject), {})):
""" A KernelClient that provides signals and slots.
"""
# Emitted when the kernel client has started listening.
started_channels = QtCore.Signal()
# Emitted when the kernel client has stopped listening.
stopped_channels = QtCore.Signal()
#---------------------------------------------------------------------------
# 'KernelClient' interface
#---------------------------------------------------------------------------
#------ Channel management -------------------------------------------------
def start_channels(self, *args, **kw):
""" Reimplemented to emit signal.
"""
super(QtKernelClientMixin, self).start_channels(*args, **kw)
self.started_channels.emit()
def stop_channels(self):
""" Reimplemented to emit signal.
"""
super(QtKernelClientMixin, self).stop_channels()
self.stopped_channels.emit()