Package pyraf :: Module gki :: Class GkiController

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Class GkiController

Proxy that switches between interactive and other kernels

This can gracefully handle changes in kernels which can appear in any open workstation instruction. It also uses lazy instantiation of the real kernel (which can be expensive). In one sense it is a factory class that will instantiate the necessary kernels as they are requested.

Most external modules should access the gki functions through an instance of this class, gki.kernel.

Instance Methods

source code

taskStart(self, name)
Hook for stuff that needs to be done at start of task

source code

taskDone(self, name)
Hook for stuff that needs to be done at completion of task

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control(self, gkiMetacode)

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control_openws(self, arg)

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openKernel(self, device=None)
Open kernel specified by device or by current value of stdgraph

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getDevice(self, device=None)
Starting with stdgraph, drill until a device is found in the graphcap or isn't

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Inherited from GkiProxy: __del__, append, clear, clearReturnData, errorMessage, flush, gcur, getBuffer, getStderr, getStdin, getStdout, popStdio, prepareToRedraw, pushStdio, redrawOriginal, translate, undoN

Inherited from GkiKernel: createFunctionTables, pre_imcur, preferTtyIpc, redoN

Method Details

init(self)
(Constructor)

Overrides: GkiKernel.__init__

taskStart(self, name)

Hook for stuff that needs to be done at start of task

Overrides: GkiKernel.taskStart: (inherited documentation)

taskDone(self, name)

Hook for stuff that needs to be done at completion of task

Overrides: GkiKernel.taskDone: (inherited documentation)

control(self, gkiMetacode)

Overrides: GkiKernel.control

openKernel(self, device=None)

Open kernel specified by device or by current value of stdgraph

Overrides: GkiProxy.openKernel