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 sys
  10 sys.stdout = sys.stderr
  11 import traceback
  12 import MacOS
  13 import AE
  14 from AppleEvents import *
  15 import Evt
  16 from Events import *
  17 import Menu
  18 import Dlg
  19 import Win
  20 from Windows import *
  21 import Qd
  22
  23 import aetools
  24 import EasyDialogs
  25
  26 kHighLevelEvent = 23                            # Not defined anywhere for Python yet?
  27
  28 def mymessage(str):
  29         err = AE.AEInteractWithUser(kAEDefaultTimeout)
  30         if err:
  31                 print str
  32         EasyDialogs.Message(str)
  33
  34 def main():
  35         echo = EchoServer()
  36         saveparams = MacOS.SchedParams(0, 0)    # Disable Python's own "event handling"
  37         try:
  38                 echo.mainloop(everyEvent, 0)
  39         finally:
  40                 apply(MacOS.SchedParams, saveparams)    # Let Python have a go at events
  41                 echo.close()
  42
  43
  44 class EchoServer:
  45
  46         #suites = ['aevt', 'core', 'reqd']
  47         suites = ['****']
  48
  49         def __init__(self):
  50                 self.active = 0
  51                 for suite in self.suites:
  52                         AE.AEInstallEventHandler(suite, typeWildCard, self.aehandler)
  53                         print (suite, typeWildCard, self.aehandler)
  54                 self.active = 1
  55                 self.appleid = 1
  56                 Menu.ClearMenuBar()
  57                 self.applemenu = applemenu = Menu.NewMenu(self.appleid, "\024")
  58                 applemenu.AppendMenu("All about echo...;(-")
  59                 applemenu.AppendResMenu('DRVR')
  60                 applemenu.InsertMenu(0)
  61                 Menu.DrawMenuBar()
  62
  63         def __del__(self):
  64                 self.close()
  65
  66         def close(self):
  67                 if self.active:
  68                         self.active = 0
  69                         for suite in self.suites:
  70                                 AE.AERemoveEventHandler(suite, typeWildCard)
  71
  72         def mainloop(self, mask = everyEvent, timeout = 60*60):
  73                 while 1:
  74                         self.dooneevent(mask, timeout)
  75
  76         def dooneevent(self, mask = everyEvent, timeout = 60*60):
  77                         got, event = Evt.WaitNextEvent(mask, timeout)
  78                         if got:
  79                                 self.lowlevelhandler(event)
  80
  81         def lowlevelhandler(self, event):
  82                 what, message, when, where, modifiers = event
  83                 h, v = where
  84                 if what == kHighLevelEvent:
  85                         msg = "High Level Event: %s %s" % \
  86                                 (`code(message)`, `code(h | (v<<16))`)
  87                         try:
  88                                 AE.AEProcessAppleEvent(event)
  89                         except AE.Error, err:
  90                                 mymessage(msg + "\015AEProcessAppleEvent error: %s" % str(err))
  91                                 traceback.print_exc()
  92                         else:
  93                                 mymessage(msg + "\015OK!")
  94                 elif what == keyDown:
  95                         c = chr(message & charCodeMask)
  96                         if c == '.' and modifiers & cmdKey:
  97                                 raise KeyboardInterrupt, "Command-period"
  98                         MacOS.HandleEvent(event)
  99                 elif what == mouseDown:
 100                         partcode, window = Win.FindWindow(where)
 101                         if partcode == inMenuBar:
 102                                 result = Menu.MenuSelect(where)
 103                                 id = (result>>16) & 0xffff      # Hi word
 104                                 item = result & 0xffff          # Lo word
 105                                 if id == self.appleid:
 106                                         if item == 1:
 107                                                 mymessage("Echo -- echo AppleEvents")
 108                                         elif item > 1:
 109                                                 name = self.applemenu.GetItem(item)
 110                                                 Qd.OpenDeskAcc(name)
 111                 elif what <> autoKey:
 112                         print "Event:", (eventname(what), message, when, (h, v), modifiers)
 113 ##                      MacOS.HandleEvent(event)
 114
 115         def aehandler(self, request, reply):
 116                 print "Apple Event!"
 117                 parameters, attributes = aetools.unpackevent(request)
 118                 print "class =", `attributes['evcl'].type`,
 119                 print "id =", `attributes['evid'].type`
 120                 print "Parameters:"
 121                 keys = parameters.keys()
 122                 keys.sort()
 123                 for key in keys:
 124                         print "%s: %.150s" % (`key`, `parameters[key]`)
 125                         print "      :", str(parameters[key])
 126                 print "Attributes:"
 127                 keys = attributes.keys()
 128                 keys.sort()
 129                 for key in keys:
 130                         print "%s: %.150s" % (`key`, `attributes[key]`)
 131                 aetools.packevent(reply, parameters)
 132
 133
 134 _eventnames = {
 135         keyDown: 'keyDown',
 136         autoKey: 'autoKey',
 137         mouseDown: 'mouseDown',
 138         mouseUp: 'mouseUp',
 139         updateEvt: 'updateEvt',
 140         diskEvt: 'diskEvt',
 141         activateEvt: 'activateEvt',
 142         osEvt: 'osEvt',
 143 }
 144
 145 def eventname(what):
 146         if _eventnames.has_key(what): return _eventnames[what]
 147         else: return `what`
 148
 149 def code(x):
 150         "Convert a long int to the 4-character code it really is"
 151         s = ''
 152         for i in range(4):
 153                 x, c = divmod(x, 256)
 154                 s = chr(c) + s
 155         return s
 156
 157
 158 if __name__ == '__main__':
 159         main()