* A presentation role is not necessary for the img tag.
- If a non-empty alt text is provided, the presentation role will
conflict with the alt text.
- An empty alt text denotes a decorative image. The presence of a
presentation role is redundant.
* Make sure that the alt text is set to an empty string. Otherwise,
an img tag without an alt attribute will be produced which is an
invalid markup.
* When text is rendered for the action icon, set the icon as a
decorative image by setting empty alt and title attributes and adding
the aria-hidden attribute as well. Otherwise, assistive technologies
will read the action name twice.
* An image with non-empty alt text should not have a presentation role.
* An empty alt attribute is sufficient for decorative images. No need to
add a presentation role for them.
* Additionally, if there is already text that is present for an image,
there's no need to add an alt text with the same text. Such images are
decorative and should just have an empty alt text.
This is a temporary solution to the accessibility problem
"Fieldsets without legend". We will no longer use a fieldset tag
if there is no legend after MDL-80431
When accessing a datepicker that is within a dropdown menu using the tab
key, the navigation sequence was changed since the datepicker code is
not rendered within the dropdown menu element, thus the dropdown was
closed as it was understood that we were not more inside it.
Furthermore, when exiting the datepicker by pressing tab, as the
dropdown was closed, the navigation jumped to the first element on the
page, which is the link to Skip to main content.
To resolve this, a validation was added that keeps the dropdown menu
open if the datepicker is open and accessed via the tab key.
If $CFG->enable_read_only_sessions_debug was not enabled, debugging could be
enabled part-way through a request when restart_with_write_lock was
called. This meant that a diff between the initial and final session
would be made during write_close(), although the intial session state
was never captured. This generated false positives in the logs, and it
thought any variable set in the session was a change from the original
value.
This ensures that debugging is enabled before the debug flag is allowed
to change, preventing false positives.
The original implementation of group filtering introduced in MDL-80565
assumed that the log table existed in Moodle's own database. This is not
the case of the database logstore, or any similar logstore implemetning
the database \core\log\sql_reader interface.
Furthermore this check was also applying the SQL when the user had the
`accessallgroups` capability, or when the course was not in SEPARATE
groups mode (no groupmode and/or visible groups).
Co-authored: Laurent David <laurent.david@moodle.com>
The \Traversable interface does not define the `valid` method.
Furthermore, the `valid` method actually checks that there is a _next_
value, which requires the value already be fetched and waiting. This is
not the case for all Iterators. For example the CallbackFilterIterator
does not load the initial value until it is requested.
It is completely unnecessary to do this check anyway as an invalid
Iterator will just not return any values.
This change reverts much of MDL-74641, removing the erroneous userquota
checks from zip_packer. Now, during extraction, the zip_packer will exit
with an error status when it encounters a file which is larger than its
advertised size, and NOT when it determines the size of the extracted
files have exceeded the userquota (which only applies to private files
and which was used incorrectly here). It also reverts changes to the
draftfiles_ajax.php file, restoring the original (pre-MDL-74641) error
handling.
There was a data provider to get the list of the FontAwesome icons that
was initialized when running filtered tests.
It was causing some failures with filtered tests that, for instance,
called require_login and changed the course.
To avoid this failure (and also to improve the performance), the logic
to get the icons list has been moved to the test.
Jun Pataleta