This fixes the issue caused by https://bugs.jqueryui.com/ticket/9357.
We now empty the live region instead of appending to it, and we do so
after a brief timeout so the live region isn't updated on every mousemove
event or when quickly traversing through options.
Fixes gh-2002
Closes gh-2031
Summary of the changes:
* Build: Add jQuery 3.2.0-3.4.1 to versions UI can be tested against
* Build: Load jQuery & Migrate via HTTPS
* Build: Add package-lock.json to .gitignore
* Build: Update jQuery Migrate from 3.0.0 to 3.1.0
* Build: Allow to run tests against jQuery 3.x-git
* Build: Fix formatting according to JSCS rules
* Build: Disable JSCS for the inlined jQuery Color
* All: Switch from $.isArray to Array.isArray (jQuery.isArray will be
removed in jQuery 4.0)
* All: Switch from `$.isFunction( x )` to `typeof x === "function"`
(jQuery.isFunction will be removed in jQuery 4.0)
* All: Inline jQuery.isWindow as it'll be removed in jQuery 4.0
* Effects: Fix a timing issue in a variable declaration. Previously,
a jQuery object was created, chained & assigned to a variable that
was then accessed in a callback used inside of this chained
definition. Due to a timing difference in when the callback fired for
the first time in latest jQuery master, it was being called before
the variable was defined.
* Tests: Make dialog & draggable unit tests less strict (newest jQuery
returns fractional results in some cases, making comparisons fail when
there's a tiny difference)
* All: Migrate from $.trim to bare String.prototype.trim (jQuery.trim
will be deprecated in jQuery 3.5)
Closes gh-1901
IE11 and scrolling autocompletes didn't get along great; this should help fix
their relationship.
When you click on an autocomplete scrollbar in IE11, the menu temporarily
gains focus, which caused a couple problems.
1. Depending on how long you clicked, the dropdown could close.
2. Scrolling down by clicking the scrollbar's down arrow would misbehave. The
list would pop back up to the top with the first item selected.
We can fix both problems by modifying the focus/blur handling a bit.
1. There is a flag to instruct the control to ignore blurs, but it was getting
cleared too quickly; when the code refocused the input after it was blurred,
IE would send *another* blur event, which wasn't getting ignored and would
close the dropdown. We now wait for the focus/blur pair to process before
clearing the flag.
2. We remove the tabindex from the dropdown menu, which prevents menu's focus
handler from firing. When you focus a menu, it will select the first menu item
if none are selected. Selecting a menu item will scroll it into view if it's
not visible. This combination of behaviors was causing the strange behavior
when attempting to scroll down.
I couldn't figure out a way to write a unit test for this, since it's IE only
and seems to require user interaction. You can verify the previous behavior
(and the fix) on `demos/autocomplete/maxheight.html`
Fixes#9638
Closes gh-1785
This ensures that the menu will close if the user interacts with a
draggable, resizable, etc. element since those interactions don't
change focus.
Ref #6642
Closes gh-1614
