Oops! Was: RE: [PyCrust] 0.6 in the oven, now with PyFilling, should be done cooking soon

[Patrick K. O'B. <po...@or...>]

Oops! That wasn't the only change that got committed to cvs the other night.
Hold on to your hats, there's another feature in the cvs code that might
freak you out if I don't explain. <grin>

The new feature is a shell façade class that I was working on, to simplify
what users see when they type ">>> shell." in the shell window. The idea is
to hide all the attributes that have to do with the StyledTextControl or
internal mechanisms. This lets the shell user focus on the shell commands
that are relevant to the typical shell session. Basically, I was getting
tired of typing "shell." and seeing a huge list of irrelevant stuff. This
new façade class takes care of that problem, while still magically allowing
all the attributes and method calls to work, as long as you know what they
are. And if you ever want to see the full list, you can just do
"shell.other." Here is the code, and you can also see a pretty diff at
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/pycrust/PyCrust/shell.py.diff
?r1=1.19&r2=1.20.

class ShellFacade:
    """Simplified interface to all shell-related functionality.

    This is a semi-transparent facade, in that all attributes of other are
    still accessible, even though only some are visible to the user."""

    name = 'PyCrust Shell Interface'
    revision = __version__

    def __init__(self, other):
        """Create a ShellFacade instance."""
        methods = ['ask',
                   'clear',
                   'pause',
                   'prompt',
                   'quit',
                   'redirectStderr',
                   'redirectStdin',
                   'redirectStdout',
                   'run',
                   'runfile',
                  ]
        for method in methods:
            self.__dict__[method] = getattr(other, method)
        d = self.__dict__
        d['other'] = other
        d['help'] = 'There is no help available, yet.'


    def __getattr__(self, name):
        if hasattr(self.other, name):
            return getattr(self.other, name)
        else:
            raise AttributeError, name

    def __setattr__(self, name, value):
        if self.__dict__.has_key(name):
            self.__dict__[name] = value
        elif hasattr(self.other, name):
            return setattr(self.other, name, value)
        else:
            raise AttributeError, name

    def _getAttributeNames(self):
        """Return list of magic attributes to extend introspection."""
        list = ['autoCallTip',
                'autoComplete',
                'autoCompleteCaseInsensitive',
                'autoCompleteIncludeDouble',
                'autoCompleteIncludeMagic',
                'autoCompleteIncludeSingle',
               ]
        list.sort()
        return list


---
Patrick K. O'Brien
Orbtech (http://www.orbtech.com)
"I am, therefore I think."

-----Original Message-----
From: pyc...@li...
[mailto:pyc...@li...]On Behalf Of Patrick K.
O'Brien
Sent: Wednesday, September 19, 2001 7:32 PM
To: pyc...@li...
Subject: RE: [PyCrust] 0.6 in the oven, now with PyFilling, should be done
cooking soon

That's a perfectly reasonable scenario, so I will indeed add your suggested
code. I try to avoid superfluous code as much as I can, but please don't
take my reluctance as a lack of concern for your needs. I very much want
PyCrust components to be useable in a wide variety of situations and you
have identified something I hadn't considered. Thank you for your
suggestion. It should appear in cvs with the next checkin.

---
Patrick K. O'Brien
Orbtech (http://www.orbtech.com)
"I am, therefore I think."