15 Dec
2009
15 Dec
'09
11:44 a.m.
Hi Johan,
I'm sorry to say that GLMExamples
class>>browseExamples is broken:
it only shows an empty list. The reason for this is that it looks
for pragmas but these are all in the subclasses. I guess that all
this was first a big class that has been split up in different
subclasses but the code of this method did not get adapted.
browseExamples is in the right place, but you should execute it for
subclasses :). I just pointed the place for the code.
Still, hacking around in the code a bit did not give
me insight in
my root question. So let me try again: I want to understand what
happens when you specify 'browser showOn: #foo; from: #bar' Where is
the code that passes the selection event from #foo to #bar so that
#bar refreshes itself? If I can hook into that, I can send a fake
selection event from a non-existent #foo to my #bar so that #bar
refreshes ... being an update of #bar :-)
Give me that and I'll code a primitive update
mechanism for you that
you can include in a future release of Glamour. As I conversed with
Alex today (regarding a Mondrian update mechanism), it does not
matter if it is slow or it flickers, at least it is basic
functionality. First get it to work and we'll invest in an optimal
solution later. We're supposed to be agile, right?
It's not quite that straightforward. The propagation of values is
given by Transmissions which are first class connectors between Panes.
Whenever you have a showOn:;from: you get a Transmission with one
target given by showOn: and as many origins as #from:. Every
transmission is activated once an origin changes the value.
The problem of update is not the flickering, but is in getting proper
semantics for Transmissions. The matter is a bit complicated because
the browser should still make sense after an update. Refreshing the
whole browser is also not straightforward, because you have to know
how to traverse it which depends on the posibly complex graph of
Transmissions.
So, as I said, it is not quite straightforward, but you can certainly
take a look :).
Cheers,
Doru
On 14 Dec 2009, at 12:11, Tudor Girba wrote:
--
www.tudorgirba.com
"One cannot do more than one can do."
Hi Johan,
I do not have enough time to look into this right now, but maybe
GLMDynamicPresentation is useful for your goal. This presentation
takes as entity a presentation (or a browser, given that a browser
is a presentation). Please take a look at GLMExamples
class>>browseExamples for an example of how to use this one.
Cheers,
Doru
--
Johan Fabry
jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry
PLEIAD Lab - Computer Science Department (DCC) - University of Chile
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