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# (Slightly less) primitive operations for sending Apple Events to applications.
# This could be the basis of a Script Editor like application.
from Carbon.AE import *
from Carbon.AppleEvents import *
import aetools
import types
class TalkTo:
def __init__(self, signature):
"""Create a communication channel with a particular application.
For now, the application must be given by its 4-character signature
(because I don't know yet how to do other target types).
"""
if type(signature) != types.StringType or len(signature) != 4:
raise TypeError, "signature should be 4-char string"
self.target = AECreateDesc(typeApplSignature, signature)
self.send_flags = kAEWaitReply
self.send_priority = kAENormalPriority
self.send_timeout = kAEDefaultTimeout
def newevent(self, code, subcode, parameters = {}, attributes = {}):
event = AECreateAppleEvent(code, subcode, self.target,
kAutoGenerateReturnID, kAnyTransactionID)
aetools.packevent(event, parameters, attributes)
return event
def sendevent(self, event):
reply = event.AESend(self.send_flags, self.send_priority,
self.send_timeout)
parameters, attributes = aetools.unpackevent(reply)
return reply, parameters, attributes
def send(self, code, subcode, parameters = {}, attributes = {}):
return self.sendevent(self.newevent(code, subcode, parameters, attributes))
def activate(self):
# Send undocumented but easily reverse engineered 'activate' command
self.send('misc', 'actv')
# This object is equivalent to "selection" in AppleScript
# (in the core suite, if that makes a difference):
get_selection = aetools.Property('sele', None)
# Test program. You can make it do what you want by passing parameters.
# The default gets the selection from Quill (Scriptable Text Editor).
def test(app = 'quil', suite = 'core', id = 'getd', arg = get_selection):
t = TalkTo(app)
t.activate()
if arg:
dict = {'----': arg}
else:
dict = {}
reply, parameters, attributes = t.send(suite, id, dict)
print reply, parameters
if parameters.has_key('----'): print "returns:", str(parameters['----'])
test()
# So we can see it:
import sys
sys.exit(1)
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