Capture the backspace key when editing wiki pages

[alvaro.iradier@…]

Using Firefox, when editing a wiki page, if you press the backspace key when the focus is out of the text edit area, the browser moves to the previous page in history, and all the changes are lost. Moving history forward won't bring your changes back.

It would be quite nice to intercept/capture the "history back" event with javascript, and warn the user.

More info can be found here:

• ​Capture the Browser Back Button - JavaScript Snippets
• ​Mastering The Back Button With Javascript

[Christian Boos]

That's a browser quirk, suggesting wontfix.

And btw, for me it works (FF 3.6), i.e. when going forward you retrieve your edit. Maybe you have a FF plugin that gets in the way. Try disabling them. I think that this might be a problem when using https:, IIRC. But still, that would be a browser quirk. What happens with other browsers?

[alvaro.iradier@…]

Using ​http://, Firefox 3.6 on Windows, safe mode with all extensions disabled won't remember the changes.

Internet Explorer 8, latest Opera, Chrome, and Firefox 3.0 (on Linux) however, work as expected. So I guess you're right, this is about Firefox 3.6 on Windows.

I found this on firefox bugzilla:

​https://bugzilla.mozilla.org/show_bug.cgi?id=252729

Thanks.

[Christian Boos]

Replying to alvaro.iradier@…:

Using ​http://, Firefox 3.6 on Windows

Same setup for me.

safe mode with all extensions disabled won't remember the changes.

Also works for me with firefox -safe-mode.

Is your Trac public?

[alvaro.iradier@…]

Not public, it's our intranet Trac. Tried on other computers, and got exactly the same problem. The server is Apache 2.2.14 using Trac 0.11.7, and these are the page headers for (internal server) ​http://trac/rolf/wiki/Desarrollo/ProtocolSpecification?action=edit :

Date: Mon, 22 Mar 2010 10:33:29 GMT
Server: Apache/2.2.14 (Win32) DAV/2 mod_python/3.3.1 Python/2.5.4 SVN/1.6.6 mod_wsgi/3.0 Python/2.6.4 PHP/5.2.5
Cache-Control: must-revalidate
Content-Length: 15298
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html;charset=utf-8

200 Ok

BTW, just tried on another Trac site and it works! Headers are:

Date: Mon, 22 Mar 2010 11:01:18 GMT
Server: Apache/2.2.9 (Debian) mod_ssl/2.2.9 OpenSSL/0.9.8g DAV/2 SVN/1.5.1 mod_wsgi/2.5 Python/2.5.2
Cache-Control: must-revalidate
Expires: Fri, 01 Jan 1999 00:00:00 GMT
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 6586
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: text/html;charset=utf-8

200 Ok

Can you see something strange?

Thanks for your help, even being not a Trac issue.

Replying to cboos:

Replying to alvaro.iradier@…:

Using ​http://, Firefox 3.6 on Windows

Same setup for me.

safe mode with all extensions disabled won't remember the changes.

Also works for me with firefox -safe-mode.

Is your Trac public?

[Christian Boos]

No idea what's going on here. If someone can provide a recipe to reproduce the issue, feel free to reopen, in the meantime there's not much we can do (and it's probably not a Trac issue in any case).