having both cell based and view based outline views in one project
having both cell based and view based outline views in one project
- Subject: having both cell based and view based outline views in one project
- From: Navneet Kumar <email@hidden>
- Date: Sat, 12 Jul 2014 20:50:38 +0530
Hi,
I had one (set cell-based in IB) outline view in my project using custom cell for one table Column (identifier : “Description”).
And it was working fine with my AppDelegate implementing the required datasource and some delegate methods.
I added another (set view-based in IB) outline view and I am returning custom views in the following method (in AppDelegate):
- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item {
NSString *identifier = [tableColumn identifier];
if ([outlineView isEqualTo:outlineViewThumbs]) {
if ([identifier isEqualToString:COLUMN_ID_DESC]) {// having only one table column
return [item cellView];
}
}
return nil;
}
This view-based outline view is working as expected, but the earlier cell-based outline is now showing empty rows (yes, it does populate as is evident from the vertical scroller and clicking also selects the row).
Adding a breakpoint in the above method, I can see it being called by cell-based outline view, and in this case this method returns nil. And the outlineView: objectValueForTableColumn: item: method doesn’t get called.
If I comment the last line in above method and return nothing for the cell-based outline view, the outlineView: objectValueForTableColumn: item: is called after the above method, but it leads to crash at another place in code where I’m doing [tabView display];. This tabView contains both the outline views in separate tabs.
How to tackle it?
Do I need to use two separate classes for datasource and delegate for the two outline views?
Thanks,
Navneet
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