ProAction 1.8 - A New GUI System For Scripting Under AmigaOS (SVN: 1:32M)

Example Code - scripts/00_Starting_ProAction.py

     1:  #!python
     2:  #
     3:  ################################################################
     4:  #
     5:  # Anatomy of a ProAction Application.
     6:  #
     7:  # 00_Starting_ProAction.py
     8:  #
     9:  # Detecting and starting the GUI Server as required
    10:  #
    11:  ################################################################
    12:  #
    13:  #
    14:  
    15:  import sys
    16:  import os
    17:  import arexx
    18:  
    19:   
    20:  #
    21:  # ErrorExit() throws up an RequestChoice notification to indicate
    22:  # a critical error.
    23:  #
    24:  
    25:  def ErrorExit(msg):
    26:  # Build our command as a string.
    27:  # We can use sys.argv[0] for the script name to make thsi more reusable.
    28:   command = "RequestChoice TYPE "ERROR" "" + sys.argv[0] + "" "" + msg + ""  "OK" >NIL:"
    29:   # Call the command via the os.system() 
    30:   os.system(command)
    31:   exit()
    32:  
    33:  # 
    34:  # The support GetPorts() returns a list of public MsgPorts  
    35:  # as a string 
    36:  # 
    37:  
    38:  
    39:  def GetPorts():
    40:  # Depending on the version of python we may have a useful
    41:  # function that retuns just what we need, so we use the try 
    42:  # except syntax to test.
    43:  
    44:   try:
    45:    ports = os.getports()
    46:    ports = " ".join(ports)
    47:   except AttributeError: 
    48:   # The getports function wasn't present so we call the REXX
    49:   # equivalent.
    50:    (rc,rc2,ports) = arexx.dorexx("REXX","return show('P')")
    51:    if rc != 0:
    52:     # We couldn't even call REXX somwthing serioiusly up here
    53:     # Bail out with a requester.
    54:     ErrorExit("Couldn't Find ARexx!")
    55:   return ports
    56:  
    57:  
    58:  # Now we need to check that ProAction is present an available to us,
    59:  # So first get a list of active ports
    60:  
    61:  ports = GetPorts()
    62:  
    63:  # Then check for ProActions port which will be "PROACTION".
    64:  # Port names are case sensitive.
    65:  
    66:  if -1 == ports.find("PROACTION"):
    67:  # No ProAction start it
    68:   os.system("RUN >"T:proactionpid" *>NIL: APPDIR:PROACTION")
    69:   os.system("C:WaitForPort PROACTION")
    70:   # Now check again
    71:   ports = GetPorts()
    72:   if -1 == ports.find("PROACTION"):
    73:   # Still not there :-(
    74:    ErrorExit("Unable to start or find ProAction GUIServer")
    75:  
    76:  
    77:  # Okay we should be good to go now
    78: