utils/wxPython/modules/html/htmlhelper.py

   1 #
   2 # htmlhelper.py
   3 #
   4 # A few helper functions for putting wxPython widgets in html pages
   5 #
   6 # Harm van der Heijden, 11 aug 1999.
   7
   8 import wx
   9 import string
  10 import htmlc
  11
  12 # Function to parse a param string (of the form 'item=value item2="value etc"'
  13 # and creates a dictionary
  14 def _param2dict(param):
  15     i = 0; j = 0; s = len(param); d = {}
  16     d['param_str'] = param
  17     while 1:
  18         while i<s and param[i] == " " : i = i+1
  19         if i>=s: break
  20         j = i
  21         while j<s and param[j] != "=": j=j+1
  22         if j+1>=s:
  23             break
  24         word = param[i:j]
  25         i=j+1
  26         if (param[i] == '"'):
  27             j=i+1
  28             while j<s and param[j] != '"' : j=j+1
  29             if j == s: break
  30             val = param[i+1:j]
  31         elif (param[i] != " "):
  32             j=i+1
  33             while j<s and param[j] != " " : j=j+1
  34             val = param[i:j]
  35         else:
  36             val = ""
  37         i=j+1
  38         d[string.lower(word)] = val
  39     return d
  40
  41 # This function gets called by the <python> tag handler.
  42 # Arguments are the parent (wxHtmlWindow) SWIG pointer (in python, a string)
  43 # and a string containing the parameters.
  44 # The return value must be the SWIG pointer of the created widget (the 'this'
  45 # attribute in python). The widget must be derived from a wxWindow or one
  46 # of its descendants.
  47 def _WidgetStarter(parentptr, param):
  48     # create a python instance of the parent
  49     parent = wx.wxWindowPtr(parentptr)
  50     # try to find the widget class in the htmlwinc (=htmlwidget) module
  51     dict = _param2dict(param)
  52     classname = dict['class']
  53     obj = htmlc.__dict__[classname]
  54     # now create the class with arguments parent, dictionary
  55     cls = apply(obj, (parent, dict))
  56     # return the class instance's pointer
  57     return cls.this
  58
  59 htmlc.WidgetStarter = _WidgetStarter