On 06/19/2017 04:28 PM, Brian Grinstead wrote:
I was wondering what would need to be done in order to use the accesskey
attribute on HTML elements in the browser chrome. Here are some of the
differences between the attribute in HTML and XUL that I've found so far:
1) In XUL
(https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/Attribute/accesskey)
the shortcut is `Control + key` on Windows and `Command + key` on Mac. In HTML
(https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/accesskey)
the shortcut is `Alt + Shift + key` on Windows and `Control + Alt + key` on
Mac. Would we want to change the HTML shortcut (in browser chrome) to match XUL
behavior?
As far as I can tell this was last changed/discussed in
https://bugzilla.mozilla.org/show_bug.cgi?id=340902, and Mats may be the
right person to comment on it (but do note that this hasn't changed
since Firefox 2.)
2) The FAQ & Policies page
(https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/XUL_Accesskey_FAQ_and_Policies)
conflicts the with previous point when it says that accesskey is only available on
Mac in HTML. If this is correct, would we want to disable accesskey functionality
on Mac for HTML (in browser chrome) to maintain the current behavior, or would it
working be a benefit of using HTML?
That documentation seems incorrect. Mac
<https://searchfox.org/mozilla-central/rev/7cc377ce3f0a569c5c9b362d589705cd4fecc0ac/modules/libpref/init/all.js#4040>
uses different defaults than other OSes
<https://searchfox.org/mozilla-central/rev/7cc377ce3f0a569c5c9b362d589705cd4fecc0ac/modules/libpref/init/all.js#2518>.
Not sure why. :-)
3) The formatting / underlining is controlled by the label-control xbl binding
at
http://searchfox.org/mozilla-central/source/toolkit/content/widgets/text.xml#66.
Presumably this is something that would need to be reimplemented for HTML
elements in order to use them in the browser chrome.
The underlining? Could that not be achieved using CSS?
Am I missing anything else?
on Windows, the OS native widgets have a custom way of handling the
underlining IIRC to draw it only when Alt is pressed or something along
those lines and at some point we also had a bug about it to implement it
for XUL, but I'm not sure if we ever did that and I can't find the bug
right now, but something to double check perhaps.
Cheers,
Ehsan
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