tree 837fe09119ab82342ee9cea636d249013912eda8
parent 1368c75fdbfd4d0a8424d28b2b857e0a73914157
author Ionel Popescu <iopopesc@microsoft.com> 1639712055 -0800
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1639712495 -0800

[SelectMenu] Add support for reset.

The reset algorithm for selectmenu elements is to go through all the
option elements in the element's list of options, set their selectedness
to true if the option element has a selected attribute, and false
otherwise, set their dirtiness to false, and run the steps to reset
the selected option for the selectmenu.

To reset the default selected option:
- if no option is selected, set the selection to the first non-disabled
option if it exists, or null otherwise
- if two or more options are selected, set the selection to the last
selected option

Bug: 1121840
Change-Id: I5fa981c869a75cd933e60d0f0dbc5999ff3223c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3343646
Reviewed-by: Dan Clark <daniec@microsoft.com>
Reviewed-by: Mason Freed <masonf@chromium.org>
Commit-Queue: Ionel Popescu <iopopesc@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#952647}