Currently, the "Collapse menu" item is not focusable and keyboard users can't collapse/expand the admin menu. This aims to fix it so that screen readers no longer announce it as a clickable but it remains unfocusable and thus unusable. So it's now a button.
Quoting joedolson at WordCamp Chicago 2014:
"If it's supposed to act like a button, it should be a button."
Also includes a grunt:precommit run that picked up some postcss changes to src/wp-includes/css/customize-preview.css
Fixes#29958.
Props ajercia, ipm-frommen for an iterative patch, valendesigns for an iterative patch, GaryJ for feedback, joedolson for feedback, helen for feedback
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* Edit shortcuts show initially for a moment and then fade away so as to not get in the way of the preview.
* Visibility of edit shortcuts is toggled by clicking/touching anywhere inert in the document.
* Implements UI for mobile and touch devices which do not support shift-click.
* Adds `editShortcutVisibility` state.
* Adds new methods to `wp.customize.selectiveRefresh.Partial` for managing edit shortcuts.
Incorporates aspects of the Customize Direct Manipulation feature plugin.
Props sirbrillig, mattwiebe, celloexpressions, melchoyce, westonruter, afercia.
Fixes#27403.
Built from https://develop.svn.wordpress.org/trunk@38967
git-svn-id: http://core.svn.wordpress.org/trunk@38910 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Aaron Jorbin
Weston Ruter
Dominik Schilling