How to remove NSTableView's border and change cell selection color as same as Finder's?

Question

I'm making an Cocoa app for Yosemite.

I added a view based NSTableView in Interface builder, but the border 2 pixel width and thicker than Yosemite's Finder's. And the cell selection color is blue, while Yosemite's Finder's is gray.

And this is how Yosemite's Finder's table view looks like.

I checked the settings in Interface Builder. The super scroll view of NSTableView's frame setting is (0,0,149,257):

While the Clip View's frame setting is (1, 1, 147, 255) and can not be changed.

And how to make a same NSTableView as Yosemite's Finder's?

Thanks a ton!

Answer 1

The Finder sidebar isn't a table-view it's a Source List NSOutlineView:

The border is applied around the enclosing scroll view:

Note also that a standard NSOutlineView lets you adjust the highlight style from within Interface Buider:

Answer 2

In my experience selected rows are still painted blue, even when the "Source List" highlight style is selected. To avoid that, I needed to prevent the table or outline view from becoming the first responder by subclassing it and adding

- (BOOL)becomeFirstResponder {
    return NO;
}

Edit: Turns out becomeFirstResponder is actually important if you want to support keyboard navigation. I have found a better solution that does not override becomeFirstResponder.

First, create a custom NSTableRowView subclass with an (overridden) empty setEmphasized: method:

- (void)setEmphasized:(BOOL)emphasized {
    // This avoids a blue background when selected in a source list that has first responder status.
}

You can then provide an instance of your custom NSTableRowView class by implementing

- (NSTableRowView *)tableView:(NSTableView *)tableView rowViewForRow:(NSInteger)row

in your NSTableViewDelegate.