nsoutlineview

I have an issue that the method -(NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item; is not being called when the item isn't a group item. The methods -(BOOL)outlineView:(NSOutlineView *)outlineView isGroupItem:(id)item; -(BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item; are implemented to return YES for the (same and) correct set of header/group items. The following methods -(NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item; -(id)outlineView:(NSOutlineView *)outlineView

I am looking to add checkboxes to NSOutlineview using the correct Apple recommended method - however its not clear from the documentation. How do I add the behavour to allow users whereby if I click a parent checkbox, then it will select the children, and if I unclick it - it will deselect the children of that item? edit: I have simplified my question and added image to make it clearer ( hopefully) My Approach: I have been using the wonderful answer by Code Different to build an Outline view in my mac app. https://stackoverflow.com/a/45384599/559760 - I chose to populate the NSoutLine view

Here is the issue: a view-based NSOutlineView (or NSTableView, both have the issue) contains a custom control hosting a CALayer, for custom animation purposes. When resizing the outline view, or after deleting rows (animated deletion), the CALayer draws at the wrong place. This is just after an horizontal resize (the gray square is the CALayer): This is just after deleting the row where the gray square is missing (the gray square is the CALayer): It looks like the CALayer is drawn a little later than the view hierarchy itself, and in the case of the row deletion, isn't redrawn/removed at all.

I dont quite understand how to change (decrease) the font size for the text in my NSOutlineView. The default text is larger than most applications use for their font size. There is some heirachical thing where you dont set the font directory but you inherit from something "above" the table or outline view. Is there anywhere that neatly explains this? NSOutlineView is a sublcass of NSTableView . So an outline view also has columns, each of which has its own cell associated with it. The outline view will use the cell associated with each column to draw its content. So, if you want to change the

Background I've got an NSOutlineView that shows TrainingGroup entities. Each TrainingGroup represents a folder on the local machine. The NSOutlineView is bound to an NSTreeController with a fetch predicate of IsTrained == 0 Each TrainingGroup can be assigned to a project. Each TrainingGroup has many TrainingEntries that show a time worked on that file. When the TrainingGroup is assigned to a project, the IsTrained is set to YES . On assign to a project, all descendants are also assigned to that project and their IsTrained property is set to YES too. Project column is bound to projectTopLevel

i've got a Delegate class for a Source List. But i don't know what type the return variable of outlineView:objectValueForTableColumn:byItem: should be. At the Moment my code looks like this, all the structure things work but there is no text shown: @interface DataSource : NSObject<NSOutlineViewDelegate,NSOutlineViewDataSource> @end And the .m @implementation DataSource // Data Source methods - (NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item { return (item == nil) ? 1 : [item numberOfChildren]; } - (BOOL)outlineView:(NSOutlineView *)outlineView