ó æNXc@sŠdZddlmZdefd„ƒYZiZd„Zed„ƒZed„ƒZed„ƒZ ed „ƒZ ed „ƒZ d S( soInfrastructure for registering and firing callbacks on application events. Unlike :mod:`IPython.core.hooks`, which lets end users set single functions to be called at specific times, or a collection of alternative methods to try, callbacks are designed to be used by extension authors. A number of callbacks can be registered for the same event without needing to be aware of one another. The functions defined in this module are no-ops indicating the names of available events and the arguments which will be passed to them. .. note:: This API is experimental in IPython 2.0, and may be revised in future versions. iÿÿÿÿ(tprint_functiont EventManagercBs2eZdZd„Zd„Zd„Zd„ZRS(s3Manage a collection of events and a sequence of callbacks for each. This is attached to :class:`~IPython.core.interactiveshell.InteractiveShell` instances as an ``events`` attribute. .. note:: This API is experimental in IPython 2.0, and may be revised in future versions. cCs ||_d„|Dƒ|_dS(sInitialise the :class:`CallbackManager`. Parameters ---------- shell The :class:`~IPython.core.interactiveshell.InteractiveShell` instance available_callbacks An iterable of names for callback events. cSsi|]}g|“qS(((t.0tn((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pys &s N(tshellt callbacks(tselfRtavailable_events((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt__init__s cCs7t|ƒstd|ƒ‚n|j|j|ƒdS(sôRegister a new event callback Parameters ---------- event : str The event for which to register this callback. function : callable A function to be called on the given event. It should take the same parameters as the appropriate callback prototype. Raises ------ TypeError If ``function`` is not callable. KeyError If ``event`` is not one of the known events. sNeed a callable, got %rN(tcallablet TypeErrorRtappend(Rteventtfunction((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pytregister(s cCs|j|j|ƒdS(s'Remove a callback from the given event.N(Rtremove(RR R ((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt unregister>scOsdx]|j|D]N}y|||ŽWqtk r[tdj||ƒƒ|jjƒqXqWdS(sÑCall callbacks for ``event``. Any additional arguments are passed to all callbacks registered for this event. Exceptions raised by callbacks are caught, and a message printed. sError in callback {} (for {}):N(Rt ExceptiontprinttformatRt showtraceback(RR targstkwargstfunc((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyttriggerBs  (t__name__t __module__t__doc__RRRR(((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyRs    cCs|t|j<|S(N(RR(tcallback_proto((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt _define_eventRs cCsdS(s¨Fires before code is executed in response to user/frontend action. This includes comm and widget messages and silent execution, as well as user code cells.N((((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt pre_execute]scCsdS(s$Fires before user-entered code runs.N((((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt pre_run_cellescCsdS(s§Fires after code is executed in response to user/frontend action. This includes comm and widget messages and silent execution, as well as user code cells.N((((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt post_executejscCsdS(s#Fires after user-entered code runs.N((((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyt post_run_cellrscCsdS(sQFires after initialisation of :class:`~IPython.core.interactiveshell.InteractiveShell`. This is before extensions and startup scripts are loaded, so it can only be set by subclassing. Parameters ---------- ip : :class:`~IPython.core.interactiveshell.InteractiveShell` The newly initialised shell. N((tip((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pytshell_initializedws N( Rt __future__RtobjectRRRRRR R!R#(((sK/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/IPython/core/events.pyts?