customizing visual feedback in nstableview
-
Is it possible to override the default visual feedback for dropping
objects onto table views? I would like it to become highlighted
instead of drawing a black line inbetween cells, since this does not
make sense with a sorted table view.
Thanks in advance,
Francisco Tolmasky
<ftolmasky...>
http://www-scf.usc.edu/~tolmasky/
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On 18. Mar 2004, at 11:11, Francisco Tolmasky wrote:
> Is it possible to override the default visual feedback for dropping
> objects onto table views? I would like it to become highlighted
> instead of drawing a black line inbetween cells, since this does not
> make sense with a sorted table view.
You can use setDropRow:dropOperation: to re-target the drop position.
You should then re-target it to where it fits into the sorted list.
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On Mar 18, 2004, at 2:51 PM, Allan Odgaard wrote:
> On 18. Mar 2004, at 11:11, Francisco Tolmasky wrote:
>
>> Is it possible to override the default visual feedback for dropping
>> objects onto table views? I would like it to become highlighted
>> instead of drawing a black line inbetween cells, since this does not
>> make sense with a sorted table view.
>
> You can use setDropRow:dropOperation: to re-target the drop position.
> You should then re-target it to where it fits into the sorted list.
>
This can become 'interesting' from a UI standpoint if you are dealing
with a Sorted list, or with a list that only shows a subset of the
original contents (filtered).
I'm not sure what the exact proper behavior is hig wise.
but it's something to think about..
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Let me restate what I'm trying to do. Try dropping some vcards onto
addressbook. No specific cell is highlighted, and no line is drawn
inbetween any, instead, since it is sorted, one big black box is drawn
around the entire table view, which is what I want.
On Mar 18, 2004, at 1:18 PM, Scott Anguish wrote:
>Francisco Tolmasky
> On Mar 18, 2004, at 2:51 PM, Allan Odgaard wrote:
>
>> On 18. Mar 2004, at 11:11, Francisco Tolmasky wrote:
>>
>>> Is it possible to override the default visual feedback for dropping
>>> objects onto table views? I would like it to become highlighted
>>> instead of drawing a black line inbetween cells, since this does not
>>> make sense with a sorted table view.
>>
>> You can use setDropRow:dropOperation: to re-target the drop position.
>> You should then re-target it to where it fits into the sorted list.
>>
>
> This can become 'interesting' from a UI standpoint if you are dealing
> with a Sorted list, or with a list that only shows a subset of the
> original contents (filtered).
>
> I'm not sure what the exact proper behavior is hig wise.
>
> but it's something to think about..
>
>
>
<ftolmasky...>
http://www-scf.usc.edu/~tolmasky/
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On Mar 18, 2004, at 4:40 PM, Francisco Tolmasky wrote:
> Let me restate what I'm trying to do. Try dropping some vcards onto
> addressbook. No specific cell is highlighted, and no line is drawn
> inbetween any, instead, since it is sorted, one big black box is drawn
> around the entire table view, which is what I want.
>
Well, to be able to retarget to a specic item (so that it would go into
an item....)
- (void)setDropRow:(int)row
dropOperation:(NSTableViewDropOperation)operation
Used if you wish to retarget the proposed drop. To specify a drop on
the second row, one would specify row as 2, and operation as
NSTableViewDropOn. To specify a drop below the last row, one would
specify row as [tv numberOfRows] and operation as NSTableViewDropAbove.
if you want the entire table view to highlight, in the past I've
actually implemented the drag and drop on the scrollview that contains
the tableview.
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On Mar 18, 2004, at 11:51 AM, Allan Odgaard wrote:
>> Is it possible to override the default visual feedback for droppingThat doesn't actually change the visual feedback.
>> objects onto table views? I would like it to become highlighted
>> instead of drawing a black line inbetween cells, since this does not
>> make sense with a sorted table view.
>
> You can use setDropRow:dropOperation: to re-target the drop position.
> You should then re-target it to where it fits into the sorted list.
>
There is a private method (so I'd recommend that you don't use it in a
shipping application):
- (void) _drawDropHighlightBetweenUpperRow: (int) parameter1
andLowerRow: (int) parameter2 atOffset: (float) parameter3;
If it is something you could usefully employ, send an enhancement
request.
mmalc
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- (NSDragOperation)tableView:(NSTableView*)tv validateDrop:(id
<NSDraggingInfo>)info proposedRow:(int)row
proposedDropOperation:(NSTableViewDropOperation)op
[tv setDropRow:-1 dropOperation:NSTableViewDropOn];
On 18/3-2004, at 22:58, mmalcolm crawford wrote:
> On Mar 18, 2004, at 11:51 AM, Allan Odgaard wrote:Peter Mark
>
>>> Is it possible to override the default visual feedback for dropping
>>> objects onto table views? I would like it to become highlighted
>>> instead of drawing a black line inbetween cells, since this does not
>>> make sense with a sorted table view.
>>
>> You can use setDropRow:dropOperation: to re-target the drop position.
>> You should then re-target it to where it fits into the sorted list.
>>
> That doesn't actually change the visual feedback.
>
> There is a private method (so I'd recommend that you don't use it in a
> shipping application):
>
> - (void) _drawDropHighlightBetweenUpperRow: (int) parameter1
> andLowerRow: (int) parameter2 atOffset: (float) parameter3;
>
> If it is something you could usefully employ, send an enhancement
> request.
>
> mmalc
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On Mar 18, 2004, at 1:40 PM, Francisco Tolmasky wrote:
> Let me restate what I'm trying to do. Try dropping some vcards onto
> addressbook. No specific cell is highlighted, and no line is drawn
> inbetween any, instead, since it is sorted, one big black box is drawn
> around the entire table view, which is what I want.
In that case, you should be able to do what you want by overriding
-draggingEntered: to draw the black outline, and just invoke the
inherited method if the dragging source is local.
-jcr
Should array indices start at 0 or 1? My compromise of 0.5 was rejected
without, I thought, proper consideration. (Stan Kelly-Bootle)
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