Mac/Lib/test/echo.py

   1 """'echo' -- an AppleEvent handler which handles all events the same.
   2
   3 It replies to each event by echoing the parameter back to the client.
   4 This is a good way to find out how the Script Editor formats AppleEvents,
   5 especially to figure out all the different forms an object specifier
   6 can have (without having to rely on Apple's implementation).
   7 """
   8
   9 import addpack
  10 addpack.addpack('Demo')
  11 addpack.addpack('bgen')
  12 addpack.addpack('ae')
  13 addpack.addpack('evt')
  14 #addpack.addpack('menu')
  15 addpack.addpack('win')
  16
  17 import sys
  18 sys.stdout = sys.stderr
  19 import traceback
  20 import MacOS
  21 import AE
  22 from AppleEvents import *
  23 import Evt
  24 from Events import *
  25 import Menu
  26 import Dlg
  27 import Win
  28 from Windows import *
  29 import Qd
  30
  31 import aetools
  32 import EasyDialogs
  33
  34 kHighLevelEvent = 23                            # Not defined anywhere for Python yet?
  35
  36
  37 def main():
  38         echo = EchoServer()
  39         yield = MacOS.EnableAppswitch(-1)               # Disable Python's own "event handling"
  40         try:
  41                 echo.mainloop(everyEvent, 0)
  42         finally:
  43                 MacOS.EnableAppswitch(yield)    # Let Python have a go at events
  44                 echo.close()
  45
  46
  47 class EchoServer:
  48
  49         suites = ['aevt', 'core']
  50
  51         def __init__(self):
  52                 self.active = 0
  53                 for suite in self.suites:
  54                         AE.AEInstallEventHandler(suite, typeWildCard, self.aehandler)
  55                 self.active = 1
  56                 self.appleid = 1
  57                 Menu.ClearMenuBar()
  58                 self.applemenu = applemenu = Menu.NewMenu(self.appleid, "\024")
  59                 applemenu.AppendMenu("All about echo...;(-")
  60                 applemenu.AddResMenu('DRVR')
  61                 applemenu.InsertMenu(0)
  62                 Menu.DrawMenuBar()
  63
  64         def __del__(self):
  65                 self.close()
  66
  67         def close(self):
  68                 if self.active:
  69                         self.active = 0
  70                         for suite in self.suites:
  71                                 AE.AERemoveEventHandler(suite, typeWildCard)
  72
  73         def mainloop(self, mask = everyEvent, timeout = 60*60):
  74                 while 1:
  75                         self.dooneevent(mask, timeout)
  76
  77         def dooneevent(self, mask = everyEvent, timeout = 60*60):
  78                         got, event = Evt.WaitNextEvent(mask, timeout)
  79                         if got:
  80                                 self.lowlevelhandler(event)
  81
  82         def lowlevelhandler(self, event):
  83                 what, message, when, where, modifiers = event
  84                 h, v = where
  85                 if what == kHighLevelEvent:
  86                         msg = "High Level Event: %s %s" % \
  87                                 (`code(message)`, `code(h | (v<<16))`)
  88                         try:
  89                                 AE.AEProcessAppleEvent(event)
  90                         except AE.Error, err:
  91                                 EasyDialogs.Message(msg + "\015AEProcessAppleEvent error: %s" % str(err))
  92                                 traceback.print_exc()
  93                         else:
  94                                 EasyDialogs.Message(msg + "\015OK!")
  95                 elif what == keyDown:
  96                         c = chr(message & charCodeMask)
  97                         if c == '.' and modifiers & cmdKey:
  98                                 raise KeyboardInterrupt, "Command-period"
  99                         MacOS.HandleEvent(event)
 100                 elif what == mouseDown:
 101                         partcode, window = Win.FindWindow(where)
 102                         if partcode == inMenuBar:
 103                                 result = Menu.MenuSelect(where)
 104                                 id = (result>>16) & 0xffff      # Hi word
 105                                 item = result & 0xffff          # Lo word
 106                                 if id == self.appleid:
 107                                         if item == 1:
 108                                                 EasyDialogs.Message("Echo -- echo AppleEvents")
 109                                         elif item > 1:
 110                                                 name = self.applemenu.GetItem(item)
 111                                                 Qd.OpenDeskAcc(name)
 112                 elif what <> autoKey:
 113                         print "Event:", (eventname(what), message, when, (h, v), modifiers)
 114 ##                      MacOS.HandleEvent(event)
 115
 116         def aehandler(self, request, reply):
 117                 print "Apple Event",
 118                 parameters, attributes = aetools.unpackevent(request)
 119                 print "class =", `attributes['evcl'].type`,
 120                 print "id =", `attributes['evid'].type`
 121                 print "Parameters:"
 122                 keys = parameters.keys()
 123                 keys.sort()
 124                 for key in keys:
 125                         print "%s: %.150s" % (`key`, `parameters[key]`)
 126                         print "      :", str(parameters[key])
 127                 print "Attributes:"
 128                 keys = attributes.keys()
 129                 keys.sort()
 130                 for key in keys:
 131                         print "%s: %.150s" % (`key`, `attributes[key]`)
 132                 aetools.packevent(reply, parameters)
 133
 134
 135 _eventnames = {
 136         keyDown: 'keyDown',
 137         autoKey: 'autoKey',
 138         mouseDown: 'mouseDown',
 139         mouseUp: 'mouseUp',
 140         updateEvt: 'updateEvt',
 141         diskEvt: 'diskEvt',
 142         activateEvt: 'activateEvt',
 143         osEvt: 'osEvt',
 144 }
 145
 146 def eventname(what):
 147         if _eventnames.has_key(what): return _eventnames[what]
 148         else: return `what`
 149
 150 def code(x):
 151         "Convert a long int to the 4-character code it really is"
 152         s = ''
 153         for i in range(4):
 154                 x, c = divmod(x, 256)
 155                 s = chr(c) + s
 156         return s
 157
 158
 159 if __name__ == '__main__':
 160         main()