Début du message réexpédié :
De : Keary Suska <cocoa-...@esoteritech.com>
Date : 15 janvier 2009 17:25:29 HNEC
À : Kubernan <kuber...@10191.com>
Cc : cocoa-dev@lists.apple.com
Objet : Rép : Filtering NSPopUpButtonCell when clicking on it
On Jan 15, 2009, at 4:04 AM, Kubernan wrote:
In my outline view i have a NSPopUpButtonCell for which the table
column is bound
to a NSArrayController that contains coredata entities.
The goal is to restrict the content of items in the pop up cell
depending on
other attributes of the row.
So i decided to call the setFilterPredicate: of the array
controller as soon as the user
click on the pop up cell and of course before the content of this
pop up is displayed.
For that it seems i could use (BOOL)trackMouse:(NSEvent *)theEvent
inRect:(NSRect)cellFrame ofView:(NSView *)controlView untilMouseUp:
(BOOL)untilMouseUp in a subclass of NSPopUpButtonCell. But this
method appears to me
little bit complex for my simple need and the documentation says
"This method is generally not overridden because the default
implementation invokes other NSCell methods that can be overridden
to handle specific events in a dragging session."
My question is what methods and strategy should i use for setting
the predicate of my array controller before
the content of the pop up cell is displayed ?
Have you tried setting the filterPredicate at the point the "row"
object is set/selected? I assume that would happen before the popup
is opened. And probably a saner approach.
HTH,
Thanks for your help, it works fine with outline view delegate
method : - (BOOL)outlineView:(NSOutlineView *)outlineView
shouldSelectItem:(id)item. It's not the perfect solution because each
time the user click on a row (and not only a cell - my pop up cell -
on this row) i have to build a new predicate and test if there is a
difference with the current filter predicate in the array controller.
But it works.
Regards,
Kub._______________________________________________
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