Mac/Demo/example2/dnslookup-2.py

   1 import FrameWork
   2 import EasyDialogs
   3 from Carbon import Res
   4 from Carbon import Dlg
   5 import socket
   6 import string
   7 import macresource
   8 #
   9 # Definitions for our resources
  10 ID_MAIN=512
  11 ID_ABOUT=513
  12
  13 ITEM_LOOKUP_ENTRY=1
  14 ITEM_RESULT=2
  15 ITEM_LOOKUP_BUTTON=3
  16
  17 def main():
  18     macresource.need("DLOG", ID_MAIN, "dnslookup-2.rsrc")
  19     DNSLookup()
  20
  21 class DNSLookup(FrameWork.Application):
  22     "Application class for DNS Lookup"
  23
  24     def __init__(self):
  25         # First init menus, etc.
  26         FrameWork.Application.__init__(self)
  27         # Next create our dialog
  28         self.main_dialog = MyDialog(self)
  29         # Now open the dialog
  30         self.main_dialog.open(ID_MAIN)
  31         # Finally, go into the event loop
  32         self.mainloop()
  33
  34     def makeusermenus(self):
  35         self.filemenu = m = FrameWork.Menu(self.menubar, "File")
  36         self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
  37
  38     def quit(self, *args):
  39         self._quit()
  40
  41     def do_about(self, *args):
  42         f = Dlg.GetNewDialog(ID_ABOUT, -1)
  43         while 1:
  44             n = Dlg.ModalDialog(None)
  45             if n == 1:
  46                 return
  47
  48 class MyDialog(FrameWork.DialogWindow):
  49     "Main dialog window for DNSLookup"
  50     def __init__(self, parent):
  51         FrameWork.DialogWindow.__init__(self, parent)
  52         self.parent = parent
  53
  54     def do_itemhit(self, item, event):
  55         if item == ITEM_LOOKUP_BUTTON:
  56             self.dolookup()
  57
  58     def dolookup(self):
  59         """Get text entered in the lookup entry area.  Place result of the
  60            call to dnslookup in the result entry area."""
  61         tp, h, rect = self.dlg.GetDialogItem(ITEM_LOOKUP_ENTRY)
  62         txt = Dlg.GetDialogItemText(h)
  63
  64         tp, h, rect = self.dlg.GetDialogItem(ITEM_RESULT)
  65         Dlg.SetDialogItemText(h, self.dnslookup(txt))
  66
  67     def dnslookup(self, str):
  68         """ Perform DNS lookup on str.  If first character of digit is numeric,
  69             assume that str contains an IP address.  Otherwise, assume that str
  70             contains a hostname."""
  71         if str == '': str = ' '
  72         if str[0] in string.digits:
  73             try:
  74                 value = socket.gethostbyaddr(str)[0]
  75             except:
  76                 value = 'Lookup failed'
  77         else:
  78             try:
  79                 value = socket.gethostbyname(str)
  80             except:
  81                 value = 'Lookup failed'
  82         return value
  83
  84
  85 main()