Since the <ul> and <li> elements for listing the quiz questions and
elements are mainly used for layout purposes, it is better to set the
role of these elements to presentation only.
The aria-label for the <li> element is inappropriate and can also cause
confusion to screen reader users. Better to remove this. Though this is
being used in the confirmation modal so better to just change it to a
data attribute.
Since the <ul> and <li> elements for listing the quiz questions and
elements are mainly used for layout purposes, it is better to set the
role of these elements to presentation only.
Add a default sr-only section heading in order to prevent having an
empty heading for the quiz section which is not good for accessibility.
Plus:
- There's also an existing issue where filters are never applied to
section headings on load. This has been fixed in this commit as well.
- Button role added for the edit section button which enables it to
take advantage of the theme highlighting when it receives focus.
As in MDL-74691, we need either or both of these fields, meaning either
one could be omitted. This just supports that as per the fix made in
MDL-74691.
This covers the following cases:
1. Where only the 'lineitem' service endpoint is provided
2. Where only the 'lineitems' service endpoint is provided.
Existing tests already cover the case where both are provided.
- Markdown is saved to the DB, no conversion to HTML to keep
ability to reedit the content without beaking it.
- Blockquote element is styled that it's distingishable from
normal text.
See also f4fb91ae. PHP8 now supports named arguments in calls to
the `call_user_func_array` method, which can result in differing
behaviour compared to PHP7, e.g. in this case it was throwing an
exception due to an unknown named parameter.
Displaying the course card menu only on hover is bad in terms of
accessibility as it prevents keyboard-only users from accessing the
menu. So it's better to always display them.
Including in this commit:
- Prevent the tour to be displayed if the CSS is disabled by the browser
- Removed redundant tabindex=0 attribute on the target
- Created extra code to re-calculate the suitable position of the tour
- Fixed tour issue in 200% and 400% zoom
- Fixed tour highlight is not correct in 200% and 400%
