Check out the backtracking code at http://www.bernard-web.com/pierre
Does exactly that.
On Jun 28, 2007, at 11:31 PM, Miguel Arroz wrote:
Hi!
Ok, this is a weird question. My problem is this: I implemented a
pager and a pager controller. (I know all this stuff is in Wonder,
but I'm a guy who needs to code to understand - see <http://
rentzsch.com/notes/programmersDontLikeToCode>).
The pager kicks ass, as it handles huge amount of data, using the
objectInRange stuff in Wonder to limit the resources usage.
Everything works like a charm. Except... when the user clicks the
evil back button.
There, two things happen: first, the objects shown on the screen
are not the objects where actions will apply if you choose an
action on a displayed object (the same problem descibred here -
<http://groups.google.com/group/wotips/browse_thread/thread/
7fd37a82e5175537/17cef74b566fadd7#17cef74b566fadd7>). Second, if
you click on any link in the Pager (the Pager looks like "1 2 ...
56 57 58 59 ... 567 568"), the page where you'll end does not match
the link you clicked, because the link targets have changed.
The problem is that the Pager is a stateful component, and
everytime you change the page, the same components are reused
(return null). So, when you click "back", what you see is NOT what
you get.
Now... how do I solve this (in an elegant way, of course)? I
think the best solution is, somehow, keeping the state (or part of
it) of the component for all the pages. That way, when the user
backtracks, and clicks on something in the pager, I would be able
to go to the right state, and work from there.
Another thing that worries me if what happens if people open
several windows by apple-clicking on all the pager's links. This
will create a confusing ramification in the component states. So,
another solution (and I have NO idea how to do this) is to create a
new Pager component every time the page reloads.
So, to the mighty experts who I keep boring with my stupid
questions - what do I do now? Any tips?
Yours
Miguel Arroz
Miguel Arroz
http://www.terminalapp.net
http://www.ipragma.com
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