How to select items in NSOutlineView without NSTreeController?
cocoa, nsoutlineview, select
Solution
Remember to look in superclasses when you can't find something. In this case, one of the methods you need comes from NSTableView, which is NSOutlineView's immediate superclass.
The solution is to get the row index for the item using `rowForItem:`, and if it isn't -1 (item not visible/not found), create an index set with it with `[NSIndexSet indexSetWithIndex:]` and pass that index set to the `selectRowIndexes:byExtendingSelection:` method.
Problem
I'm using `NSOutlineView` without `NSTreeController` and have implemented my own datasource. What is the best way to select an item? `NSOutlineView` support already `expandItem:` and `collapseItem:`. And I'm missing a handy method like `selectItem:. How can I do it programatically ? Thank you.