Re: NSBrowser and double click
Re: NSBrowser and double click
- Subject: Re: NSBrowser and double click
- From: Graham Cox <email@hidden>
- Date: Sun, 25 Jul 2010 15:14:47 +1000
On 25/07/2010, at 9:00 AM, mark wrote:
> A problem which is driving me spastic:
> I have an NSBrowser that allowes multiple selection.
> When I double click one of the selected items, all other selected items deselect.
> I have set the doubleaction and action methods and correct target. These are called AFTER the deselection.
> I have tried to override doClick and that doesn't prevent the deselection.
> Any ideas?
In general this is the expected behaviour. Most stuff that handles multiple selection doesn't wait to see if a click is going to end up as the first of a double-click, and so processes the first click in a straightforward way. Typically, this is to deselect everything except what was clicked (unless modifier keys are down that might extend or flip the selection). On the second click, the double-click is detected and the double action triggered.
It is possible to be smarter when processing clicks and wait to see if a second click arrives within the double-click time before processing the first click, but you rarely see code that does this, since for one thing it seems unresponsive - every single-click will have no effect until the double-click period elapses.
--Graham
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