upstream/ipython Files · IPython/frontend/qt/util.py

Move object inspection machinery out of the magics code....

Move object inspection machinery out of the magics code. Later we'll put this into a standalone object, but the least intrusive change for now is to put it in the main interactive shell object. At least now it's not embedded in the magics code, and we can start using this programatically via the messaging api.

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      """ Defines miscellaneous Qt-related helper classes and functions.

      """

      # System library imports.

      from PyQt4 import QtCore

      # IPython imports.

      from IPython.utils.traitlets import HasTraits

      #-----------------------------------------------------------------------------

      # Metaclasses

      #-----------------------------------------------------------------------------

      MetaHasTraits = type(HasTraits)

      MetaQObject = type(QtCore.QObject)

      # You can switch the order of the parents here and it doesn't seem to matter.

      class MetaQObjectHasTraits(MetaQObject, MetaHasTraits):

          """ A metaclass that inherits from the metaclasses of both HasTraits and

              QObject. 

              Using this metaclass allows a class to inherit from both HasTraits and

              QObject. See QtKernelManager for an example.

          """

          pass

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				""" Defines miscellaneous Qt-related helper classes and functions.
				"""

				# System library imports.
				from PyQt4 import QtCore

				# IPython imports.
				from IPython.utils.traitlets import HasTraits

				#-----------------------------------------------------------------------------
				# Metaclasses
				#-----------------------------------------------------------------------------

				MetaHasTraits = type(HasTraits)
				MetaQObject = type(QtCore.QObject)

				# You can switch the order of the parents here and it doesn't seem to matter.
				class MetaQObjectHasTraits(MetaQObject, MetaHasTraits):
				""" A metaclass that inherits from the metaclasses of both HasTraits and
				QObject.

				Using this metaclass allows a class to inherit from both HasTraits and
				QObject. See QtKernelManager for an example.
				"""
				pass