The accesskeys in Quicktags don't work in all browsers

[azaozz]

IE (Alt+letter) works properly. Firefox (Alt+Shift+letter) only focuses the corresponding Quicktags button sometimes. Doesn't perform the action. If the button is hidden, performs the action (this shouldn't happen in Quicktags). Chrome doesn't seem to do anything. Opera works differently: Shift+Esc brings a list of all defined access keys on that page. The Quicktags access keys are not listed there.

[azaozz]

Most of these problems on the Edit Post screen are caused by having two instances of Quicktags there, one for the Text editor and another in the Comments postbox (used for Add, Quick Edit, Reply). So there are more than one button with the same accesskey attribute.

In order to use access keys in Quicktags we will need to set them dynamically on the currently used instance only. To be able to do that Quicktags would need a concept of "focused" instance, similar to TinyMCE.

[azaozz]

In [21418]:

Quicktags: don't call the callback on pressing the access key when a button is not visible, see #21460

[azaozz]

[21418] also takes care of the bugs reported by @SergeyBiryukov on #17992 whitout the need to change TinyMCE shortcut keys in Firefox.

[azaozz]

Firefox seem to work well now: on pressing Alt+Shift+accesskey, it highlights the button, pressing the spacebar or Enter performs the action and returns focus (and the caret) to the textarea.