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"""MiniAEFrame - A minimal AppleEvent Application framework.
There are two classes:
AEServer -- a mixin class offering nice AE handling.
MiniApplication -- a very minimal alternative to FrameWork.py,
only suitable for the simplest of AppleEvent servers.
"""
from warnings import warnpy3k
warnpy3k("In 3.x, the MiniAEFrame module is removed.")
import traceback
import MacOS
from Carbon import AE
from Carbon.AppleEvents import *
from Carbon import Evt
from Carbon.Events import *
from Carbon import Menu
from Carbon import Win
from Carbon.Windows import *
from Carbon import Qd
import aetools
import EasyDialogs
kHighLevelEvent = 23 # Not defined anywhere for Python yet?
class MiniApplication:
"""A minimal FrameWork.Application-like class"""
def __init__(self):
self.quitting = 0
# Initialize menu
self.appleid = 1
self.quitid = 2
Menu.ClearMenuBar()
self.applemenu = applemenu = Menu.NewMenu(self.appleid, "\024")
applemenu.AppendMenu("%s;(-" % self.getaboutmenutext())
if MacOS.runtimemodel == 'ppc':
applemenu.AppendResMenu('DRVR')
applemenu.InsertMenu(0)
self.quitmenu = Menu.NewMenu(self.quitid, "File")
self.quitmenu.AppendMenu("Quit")
self.quitmenu.SetItemCmd(1, ord("Q"))
self.quitmenu.InsertMenu(0)
Menu.DrawMenuBar()
def __del__(self):
self.close()
def close(self):
pass
def mainloop(self, mask = everyEvent, timeout = 60*60):
while not self.quitting:
self.dooneevent(mask, timeout)
def _quit(self):
self.quitting = 1
def dooneevent(self, mask = everyEvent, timeout = 60*60):
got, event = Evt.WaitNextEvent(mask, timeout)
if got:
self.lowlevelhandler(event)
def lowlevelhandler(self, event):
what, message, when, where, modifiers = event
h, v = where
if what == kHighLevelEvent:
msg = "High Level Event: %r %r" % (code(message), code(h | (v<<16)))
try:
AE.AEProcessAppleEvent(event)
except AE.Error, err:
print 'AE error: ', err
print 'in', msg
traceback.print_exc()
return
elif what == keyDown:
c = chr(message & charCodeMask)
if modifiers & cmdKey:
if c == '.':
raise KeyboardInterrupt, "Command-period"
if c == 'q':
if hasattr(MacOS, 'OutputSeen'):
MacOS.OutputSeen()
self.quitting = 1
return
elif what == mouseDown:
partcode, window = Win.FindWindow(where)
if partcode == inMenuBar:
result = Menu.MenuSelect(where)
id = (result>>16) & 0xffff # Hi word
item = result & 0xffff # Lo word
if id == self.appleid:
if item == 1:
EasyDialogs.Message(self.getabouttext())
elif item > 1 and hasattr(Menu, 'OpenDeskAcc'):
name = self.applemenu.GetMenuItemText(item)
Menu.OpenDeskAcc(name)
elif id == self.quitid and item == 1:
if hasattr(MacOS, 'OutputSeen'):
MacOS.OutputSeen()
self.quitting = 1
Menu.HiliteMenu(0)
return
# Anything not handled is passed to Python/SIOUX
if hasattr(MacOS, 'HandleEvent'):
MacOS.HandleEvent(event)
else:
print "Unhandled event:", event
def getabouttext(self):
return self.__class__.__name__
def getaboutmenutext(self):
return "About %s\311" % self.__class__.__name__
class AEServer:
def __init__(self):
self.ae_handlers = {}
def installaehandler(self, classe, type, callback):
AE.AEInstallEventHandler(classe, type, self.callback_wrapper)
self.ae_handlers[(classe, type)] = callback
def close(self):
for classe, type in self.ae_handlers.keys():
AE.AERemoveEventHandler(classe, type)
def callback_wrapper(self, _request, _reply):
_parameters, _attributes = aetools.unpackevent(_request)
_class = _attributes['evcl'].type
_type = _attributes['evid'].type
if self.ae_handlers.has_key((_class, _type)):
_function = self.ae_handlers[(_class, _type)]
elif self.ae_handlers.has_key((_class, '****')):
_function = self.ae_handlers[(_class, '****')]
elif self.ae_handlers.has_key(('****', '****')):
_function = self.ae_handlers[('****', '****')]
else:
raise 'Cannot happen: AE callback without handler', (_class, _type)
# XXXX Do key-to-name mapping here
_parameters['_attributes'] = _attributes
_parameters['_class'] = _class
_parameters['_type'] = _type
if _parameters.has_key('----'):
_object = _parameters['----']
del _parameters['----']
# The try/except that used to be here can mask programmer errors.
# Let the program crash, the programmer can always add a **args
# to the formal parameter list.
rv = _function(_object, **_parameters)
else:
#Same try/except comment as above
rv = _function(**_parameters)
if rv is None:
aetools.packevent(_reply, {})
else:
aetools.packevent(_reply, {'----':rv})
def code(x):
"Convert a long int to the 4-character code it really is"
s = ''
for i in range(4):
x, c = divmod(x, 256)
s = chr(c) + s
return s
class _Test(AEServer, MiniApplication):
"""Mini test application, handles required events"""
def __init__(self):
MiniApplication.__init__(self)
AEServer.__init__(self)
self.installaehandler('aevt', 'oapp', self.open_app)
self.installaehandler('aevt', 'quit', self.quit)
self.installaehandler('****', '****', self.other)
self.mainloop()
def quit(self, **args):
self._quit()
def open_app(self, **args):
pass
def other(self, _object=None, _class=None, _type=None, **args):
print 'AppleEvent', (_class, _type), 'for', _object, 'Other args:', args
if __name__ == '__main__':
_Test()
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