342564 - Cmd+Left and Cmd+Right behave inconsistently in designMode

Status: RESOLVED DUPLICATE of bug 289384

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

Description

[Uri Bernstein]

In design mode, the result of pressing Cmd+Left depends on whether there is a page to go back to (i.e., the "back" button is enabled):
- If there is a page to go back to, Cmd+Left navigates back in history (as on "normal" pages).
- Otherwise, Cmd+Left moves the caret to the beginning of the line (as in textareas and Editor).

Similarly, the behaviour of Cmd+Right depends on the availability of a forward history.

To reproduce:

- Click the link in the URL field of this bug so that it will open in the current tab/window.
- (optionally) Move the caret using the right-arrow key
- Press Cmd+Left, and notice you're back at this page.
- Now Cmd+Click the same link to open it in a new tab
- Move the caret using the right-arrow key
- Press Cmd+Left: The caret is moved to the beginning of the line; no navigation occures.

Comment 1

[Uri Bernstein]

This affects SeaMonkey as well.

Comment 5

[Jesse Ruderman]

I just hit this five time in a row while trying to edit my WordPress theme :(

Comment 8

[Daniel Kabs, reporting bugs since 2002]

Every now and then this bug gets a dupe. 


I'd like to see the Cmd + Arrow actions configurable (like browser.backspace_action).

Comment 9

[Dawid Ciecierski]

Well, due to a serious bug in Snow Leopard that left me with no wifi I just went back to Windows and life is good again.

Still, would definitely be nice if we could have a user-centered cycle like Ubuntu once tried with Gnome. So that we would not only get a brand spanking new JS engine that beats everyone else on the block in JS tests, but see a few UI glitches resolved too :-)

Comment 10

[Dave O'Shaughnessy]

This only seems to occur inside certain text areas, GMail is a good example. In the text box I'm typing this, Cmd-Left/Cmd-Right work as expected on the Mac (moves cursor to start and end of line respectively).

When in Gmail however, Cmd-Left/Cmd-Right seems to have no effect at all, which is annoying because this is how Mac users move to the start/end of a line (equivalent of Home/End keys on PC).

Comment 11

[rhoderickj]

Note that this bug does not just affect Power PC Macs, but any Mac running Firefox. For what it's worth, I have written a summary of this bug and its implications here: http://www.rhoderick.org/2010/05/firefox-bug-342564/

Comment 13

[Dave O'Shaughnessy]

This is not resolved on the latest Firefox Beta 4.0b4 for mac! It's easy to replicate (and very frustrating);

1. Use latest Firefox beta on Mac.
2. Open gmail and compose new email.
3. Try to use the __standard__ mac OS X shortcut keys, Cmd-Left Arrow, Cmd-Right arrow to move to end of line / start of line.

Simply does not work.

Comment 14

[Jesse Ruderman]

Cmd+Left and Cmd+Right work properly at 
http://www.squarefree.com/contenteditable.html.

Gmail must be doing something weird, perhaps in an attempt to work around a bug in Firefox that doesn't exist any more.  See bug 405503.

Comment 15

[Dave O'Shaughnessy]

I can confirm that this problem also happens in the JCE editor (for Joomla). Surely they aren't both working around a Firefox bug on the Mac build!?

This bug causes data loss. Firefox takes you to the previous page and whatever text you've entered into the editor is gone. Really looks like this is a Firefox bug (on the Mac build).