We had assumed that outlineView:objectValueForTableColumn:item was not called if the table was bound to a NSTreeController. Wrong assumption. If we returned the correct value, or just eliminated this method, it mostly works correctly. However, there a few anomalies. The outline text indents properly, but the disclosure indicator occasionally (and randomly) appears anywhere it wants within the column/row. Also, scrolling by clicking the bar lower sometimes results in flipping down to the right level, then immediately flipping back up to the view top.
On 4/17/13 2:00 PM, "cocoa-dev-requ...@lists.apple.com" <cocoa-dev-requ...@lists.apple.com> wrote: > We are converting tables and outlines to view-based. So far, so good, on > tables. But NSOutlineView has been a pain. First of all, there is no > documentation on this, zero, zip, nada, zilch, in the NSOutlineView Reference. > You have to rely on sample code and NSOutlineView.h. Our outline view has a > column/cell identifier ³LineNumber², one for ³CheckBox², one for ³Outline². > Previously, the latter two were bound to our NSTreeController. Converting to > views (yes, using outlineView:viewForTableColumn:item:), we could not even get > the nib to load. ObjectValue always came up nil. We tried binding the > tableView to the tree controller � still nil. Ok, after examining sample > code, we decided that just maybe there was something magic about the > column/cell identifier ³MainCell², so we changed our third column/cell > identifier and replaced @²Outline² with @²MainCell² in our code. Amazing � > now the nib loads. However, still no values. Even worse, the turn-down dingy > appears in the first column, not the third where we want it. It does turn > down the right number of times and depths to match our outline, but is in the > wrong place and no values. So how do I get the outline back into the third > column and get my objectValues to work?
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