129413 - If I am using twm with NoTitleFocus, the keyboard does not work.

Status: RESOLVED DUPLICATE of bug 78928

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Marc Horowitz]

If I am using twm with NoTitleFocus, the keyboard does not work.  I
cannot scroll, use menus, fill in the location bar or forms, etc.
Such functions work fine with the mouse.

With twm NoTitleFocus, no X FocusIn or FocusOut events are ever
delivered to the application.  PresShell::HandleEvent decides where to
deliver NS_IS_KEY_EVENT() events based on the content filled in by
nsEventStateManager::GetFocusedContent().  However, unless an
NS_GOTFOCUS event, which is delivered as a result of an X FocusIn
event, is processed by nsEventStateManager::PreHandleEvent(),
mCurrentFocus will never be set, and
nsEventStateManager::GetFocusedContent() will always return nsnull.

Because no keyboard event should ever be received by the application
unless it has focus (implicitly or explicitly), I believe the correct
fix is to notice in nsEventStateManager::PreHandleEvent() when a key
is pressed (I'm not sure if this is NS_KEY_PRESS or NS_KEY_DOWN) but
mCurrentFocus is nsnull, and to set mCurrentFocus as if NS_GOTFOCUS
was received.

Note: I have used "Platform: All" and "OS: All" because there is no
way for me to say that this bug affects all Platforms and OSs running
X.  I have verified the bug on RedHat Linux 7.1 and Solaris 8.

Comment 1

[R.K.Aa.]

*** This bug has been marked as a duplicate of 78928 ***