657080 - Binding CTRL+PGUP/PGDOWN cannot prevent browser tab switching

Status: REOPENED

(Firefox :: Keyboard Navigation, defect)

Description

[Elliot Block]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

Many text editing web apps need their own behavior for PGUP/PGDOWN/CTRL+PGUP/CTRL+PGDOWN.  However, despite being able to bind CTRL+PGUP the browser will still switch tabs and it is unpreventable from within Javascript.

Reproducible: Always

Steps to Reproduce:
1. Bind CTRL+PGDOWN to do do a useful callback handler.
2. Press CTRL+PGDOWN


Actual Results:  
The callback handler will fire, but the browser will also switch tabs.

Expected Results:  
The browser to not switch tabs, or be able to prevent the browser from switching tabs by some mechanism.

Comment 1

[Nicolas Barbulesco]

Most users, like me, expect that the browser's keyboard actions do their browser job. See file bug 933470, file bug 380637.

Comment 2

[Matt Brubeck (:mbrubeck)]

Based on bug 933470, Firefox now matches the "expected behavior" described in comment 0  (although as pointed out above, this new behavior is itself a problem for many users; see bug 380637 for much more on that).

Comment 3

[Matt Brubeck (:mbrubeck)]

Attachment: test case

Hmm, it seems I spoke too soon.  At least in this simple testcase in Firefox 33 on Linux, ctrl-pgup/down still switch tabs even when the event is captured and canceled.