On Mon, Apr 7, 2008 at 12:13 AM, Alex Polite <[EMAIL PROTECTED]> wrote:
>
> I'd like to have a node that is a function of some other node/nodes.
> Sort of like in a spreadsheet. If node A is a function of nodes B and
> C it should get automatically updated in the view whenever B or C are
> changed. What's the simplest way of doing that?
Write a script :-) p.bodyString() is the body text of node p, so what you
want is a script that will update your spreadsheet nodes. Something like:
for p in c.allNodes_iter():
if spreadSheetEval(p):
myEval(p)
You define isSpreadSheetNode and spreadSheetEval.
This does a global re-evaluation, but it's a start.
To refine this, you can re-evaluate the neighbors of changed nodes. To
determine when a node changes, you can create an event handler for one of
the 'select' events.
HTH.
Edward
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