1059910 - Split concept for activated and focused window

Status: NEW

(Core :: Widget, defect)

Description

[Neil Deakin]

nsIWidgetListener/nsIFocusManager should have separate notifcations for when the window is activated, versus when it is focused.

This allows us, for example, to properly handle the distinction between main windows and key windows on Mac, where a different window may be active than the one that is focused.

Comment 1

[Steven Michaud [:smichaud] (Retired)]

Actually a window on OS X (an NSWindow object) isn't "active" or not -- it's only "key" or not, or "main" or not.

It's an application (an NSApplication object) that's "active" or not.

The concept of "key window" is (I think) very easy to understand -- it's the window that has the keyboard focus.  But the concept of "main window" is much less clear, and Apple's docs don't help very much.  But I did find the following (at https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/WinPanel/Concepts/ChangingMainKeyWindow.html):

"The foremost document or application window that is the focus of the user’s attention is referred to as the main window."