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authorGeorg Brandl <georg@python.org>2007-08-15 14:28:01 +0000
committerGeorg Brandl <georg@python.org>2007-08-15 14:28:01 +0000
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+:mod:`MiniAEFrame` --- Open Scripting Architecture server support
+=================================================================
+
+.. module:: MiniAEFrame
+ :platform: Mac
+ :synopsis: Support to act as an Open Scripting Architecture (OSA) server ("Apple Events").
+
+
+.. index::
+ single: Open Scripting Architecture
+ single: AppleEvents
+ module: FrameWork
+
+The module :mod:`MiniAEFrame` provides a framework for an application that can
+function as an Open Scripting Architecture (OSA) server, i.e. receive and
+process AppleEvents. It can be used in conjunction with :mod:`FrameWork` or
+standalone. As an example, it is used in :program:`PythonCGISlave`.
+
+The :mod:`MiniAEFrame` module defines the following classes:
+
+
+.. class:: AEServer()
+
+ A class that handles AppleEvent dispatch. Your application should subclass this
+ class together with either :class:`MiniApplication` or
+ :class:`FrameWork.Application`. Your :meth:`__init__` method should call the
+ :meth:`__init__` method for both classes.
+
+
+.. class:: MiniApplication()
+
+ A class that is more or less compatible with :class:`FrameWork.Application` but
+ with less functionality. Its event loop supports the apple menu, command-dot and
+ AppleEvents; other events are passed on to the Python interpreter and/or Sioux.
+ Useful if your application wants to use :class:`AEServer` but does not provide
+ its own windows, etc.
+
+
+.. _aeserver-objects:
+
+AEServer Objects
+----------------
+
+
+.. method:: AEServer.installaehandler(classe, type, callback)
+
+ Installs an AppleEvent handler. *classe* and *type* are the four-character OSA
+ Class and Type designators, ``'****'`` wildcards are allowed. When a matching
+ AppleEvent is received the parameters are decoded and your callback is invoked.
+
+
+.. method:: AEServer.callback(_object, **kwargs)
+
+ Your callback is called with the OSA Direct Object as first positional
+ parameter. The other parameters are passed as keyword arguments, with the
+ 4-character designator as name. Three extra keyword parameters are passed:
+ ``_class`` and ``_type`` are the Class and Type designators and ``_attributes``
+ is a dictionary with the AppleEvent attributes.
+
+ The return value of your method is packed with :func:`aetools.packevent` and
+ sent as reply.
+
+Note that there are some serious problems with the current design. AppleEvents
+which have non-identifier 4-character designators for arguments are not
+implementable, and it is not possible to return an error to the originator. This
+will be addressed in a future release.
+