Mark Wieder wrote:
Pete-
Sunday, August 19, 2012, 4:32:02 PM, you wrote:
Let's say I:
- click on line 4 of the scrolling list field
- command click on line 6 of the scrolling list field
Now lines 4 and 6 are hilited and the hilitedlines contain 4,6
Now I right-click on line 10. Line 10 does not get hilited and the
hilitedlines still contains 4,6. Is that what happens on your test?
Yes, and that's what I'd expect, HIGwise. The right mouse click is on
the field itself, not on a line in the field. You could force the
issue in the mouseDown handler by highlighting the selected line, but
I think that would cause more user angst than the current situation.
Maybe. It seems that the target object is a matter of design objective,
and varies from implementation to implementation.
For example, in OS X's Finder list view, right-clicking preserves the
original selection while also providing a context menu for the specific
item in the list being right-clicked on, rather than for the list as a
whole. It's kind of a weird implementation, actually, since they use a
different hilite indication for things right-clicked as opposed to
left-clicked, and I've seen some cases where the right-click doesn't
indicate its selection at all, even though the item-specific menu
appears as expected.
In one of the apps I manage we also had a similarly legitimate need to
apply right-click to a specific item in a list, but in our case it made
the most sense to take it all the way and actually select the item being
clicked on. For that we had to resort to the workaround to check the
clickLine to set the hilitedLines appropriately, but be careful once you
start down that road, as some actions which set the hilitedLines may not
set that property properly from a right-click, which would then throw
off arrowkey traversal of the list requiring you to write your own
arrowKey handler as well.
It might be ideal if there were a property for list fields for this,
something like the "rightClickSetsSelection" property.
In the meantime, just be sure to test your arrowKey navigation and be
prepared to write another handler if needed, and with a little extra
work you can get exactly what you're looking for.
--
Richard Gaskin
Fourth World
LiveCode training and consulting: http://www.fourthworld.com
Webzine for LiveCode developers: http://www.LiveCodeJournal.com
Follow me on Twitter: http://twitter.com/FourthWorldSys
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