1 """MiniAEFrame - A minimal AppleEvent Application framework. 2 3 There are two classes: 4 AEServer -- a mixin class offering nice AE handling. 5 MiniApplication -- a very minimal alternative to FrameWork.py, 6 only suitable for the simplest of AppleEvent servers. 7 """ 8 9 from warnings import warnpy3k 10 warnpy3k("In 3.x, the MiniAEFrame module is removed.", stacklevel=2) 11 12 import traceback 13 import MacOS 14 from Carbon import AE 15 from Carbon.AppleEvents import * 16 from Carbon import Evt 17 from Carbon.Events import * 18 from Carbon import Menu 19 from Carbon import Win 20 from Carbon.Windows import * 21 from Carbon import Qd 22 23 import aetools 24 import EasyDialogs 25 26 kHighLevelEvent = 23 # Not defined anywhere for Python yet? 27 28 29 class MiniApplication: 30 31 """A minimal FrameWork.Application-like class""" 32 33 def __init__(self): 34 self.quitting = 0 35 # Initialize menu 36 self.appleid = 1 37 self.quitid = 2 38 Menu.ClearMenuBar() 39 self.applemenu = applemenu = Menu.NewMenu(self.appleid, "\024") 40 applemenu.AppendMenu("%s;(-" % self.getaboutmenutext()) 41 if MacOS.runtimemodel == 'ppc': 42 applemenu.AppendResMenu('DRVR') 43 applemenu.InsertMenu(0) 44 self.quitmenu = Menu.NewMenu(self.quitid, "File") 45 self.quitmenu.AppendMenu("Quit") 46 self.quitmenu.SetItemCmd(1, ord("Q")) 47 self.quitmenu.InsertMenu(0) 48 Menu.DrawMenuBar() 49 50 def __del__(self): 51 self.close() 52 53 def close(self): 54 pass 55 56 def mainloop(self, mask = everyEvent, timeout = 60*60): 57 while not self.quitting: 58 self.dooneevent(mask, timeout) 59 60 def _quit(self): 61 self.quitting = 1 62 63 def dooneevent(self, mask = everyEvent, timeout = 60*60): 64 got, event = Evt.WaitNextEvent(mask, timeout) 65 if got: 66 self.lowlevelhandler(event) 67 68 def lowlevelhandler(self, event): 69 what, message, when, where, modifiers = event 70 h, v = where 71 if what == kHighLevelEvent: 72 msg = "High Level Event: %r %r" % (code(message), code(h | (v<<16))) 73 try: 74 AE.AEProcessAppleEvent(event) 75 except AE.Error, err: 76 print 'AE error: ', err 77 print 'in', msg 78 traceback.print_exc() 79 return 80 elif what == keyDown: 81 c = chr(message & charCodeMask) 82 if modifiers & cmdKey: 83 if c == '.': 84 raise KeyboardInterrupt, "Command-period" 85 if c == 'q': 86 if hasattr(MacOS, 'OutputSeen'): 87 MacOS.OutputSeen() 88 self.quitting = 1 89 return 90 elif what == mouseDown: 91 partcode, window = Win.FindWindow(where) 92 if partcode == inMenuBar: 93 result = Menu.MenuSelect(where) 94 id = (result>>16) & 0xffff # Hi word 95 item = result & 0xffff # Lo word 96 if id == self.appleid: 97 if item == 1: 98 EasyDialogs.Message(self.getabouttext()) 99 elif item > 1 and hasattr(Menu, 'OpenDeskAcc'): 100 name = self.applemenu.GetMenuItemText(item) 101 Menu.OpenDeskAcc(name) 102 elif id == self.quitid and item == 1: 103 if hasattr(MacOS, 'OutputSeen'): 104 MacOS.OutputSeen() 105 self.quitting = 1 106 Menu.HiliteMenu(0) 107 return 108 # Anything not handled is passed to Python/SIOUX 109 if hasattr(MacOS, 'HandleEvent'): 110 MacOS.HandleEvent(event) 111 else: 112 print "Unhandled event:", event 113 114 def getabouttext(self): 115 return self.__class__.__name__ 116 117 def getaboutmenutext(self): 118 return "About %s\311" % self.__class__.__name__ 119 120 121 class AEServer: 122 123 def __init__(self): 124 self.ae_handlers = {} 125 126 def installaehandler(self, classe, type, callback): 127 AE.AEInstallEventHandler(classe, type, self.callback_wrapper) 128 self.ae_handlers[(classe, type)] = callback 129 130 def close(self): 131 for classe, type in self.ae_handlers.keys(): 132 AE.AERemoveEventHandler(classe, type) 133 134 def callback_wrapper(self, _request, _reply): 135 _parameters, _attributes = aetools.unpackevent(_request) 136 _class = _attributes['evcl'].type 137 _type = _attributes['evid'].type 138 139 if (_class, _type) in self.ae_handlers: 140 _function = self.ae_handlers[(_class, _type)] 141 elif (_class, '****') in self.ae_handlers: 142 _function = self.ae_handlers[(_class, '****')] 143 elif ('****', '****') in self.ae_handlers: 144 _function = self.ae_handlers[('****', '****')] 145 else: 146 raise 'Cannot happen: AE callback without handler', (_class, _type) 147 148 # XXXX Do key-to-name mapping here 149 150 _parameters['_attributes'] = _attributes 151 _parameters['_class'] = _class 152 _parameters['_type'] = _type 153 if '----' in _parameters: 154 _object = _parameters['----'] 155 del _parameters['----'] 156 # The try/except that used to be here can mask programmer errors. 157 # Let the program crash, the programmer can always add a **args 158 # to the formal parameter list. 159 rv = _function(_object, **_parameters) 160 else: 161 #Same try/except comment as above 162 rv = _function(**_parameters) 163 164 if rv is None: 165 aetools.packevent(_reply, {}) 166 else: 167 aetools.packevent(_reply, {'----':rv}) 168 169 170 def code(x): 171 "Convert a long int to the 4-character code it really is" 172 s = '' 173 for i in range(4): 174 x, c = divmod(x, 256) 175 s = chr(c) + s 176 return s 177 178 class _Test(AEServer, MiniApplication): 179 """Mini test application, handles required events""" 180 181 def __init__(self): 182 MiniApplication.__init__(self) 183 AEServer.__init__(self) 184 self.installaehandler('aevt', 'oapp', self.open_app) 185 self.installaehandler('aevt', 'quit', self.quit) 186 self.installaehandler('****', '****', self.other) 187 self.mainloop() 188 189 def quit(self, **args): 190 self._quit() 191 192 def open_app(self, **args): 193 pass 194 195 def other(self, _object=None, _class=None, _type=None, **args): 196 print 'AppleEvent', (_class, _type), 'for', _object, 'Other args:', args 197 198 199 if __name__ == '__main__': 200 _Test() 201
