While working on the filetypes element validation, I realized we did not
cover the case of selecting 'Any file type'. So the value '*' was
falsely reported as unknown file type.
This patch introduces support for an optional method provided by the
form element classes to validate the submitted values implicitly -
without the need to have the rule explicitly added via the form
definition.
I am aware this should ideally be added to the HTML_QuickForm_element
parent class. But I wanted to avoid modification of that third party
library and keep the change in the moodleform layer only.
This is a pragmatic (read: hacky) solution of the problem that
Behat/Mink is unable to locate the input field within the filetypes
group. I've spent a while trying to figure out how to make it work. On
the road, I've discovered that our situation with labels of mform group
elements is a bit messy. And generally there seems to be no easy way how
to use the group's label to identify one particular input field in the
group.
In this case, we use mform group but in fact there is a single input
field within the group. Mink does not locate the group itself as an
input field and throws ElementNotFoundException. So reusing the group's
label as a hidden label for the input makes sense from certain
perspective.
The potential drawback (unconfirmed) is that screen readers might read
the same label text twice. But only one of them is associated with the
actual input field so chances are they would ignore the group's one,
like Mink does.
Added a script to selectively compile theme CSS. In order to allow
compiling on per theme basis without purging all theme CSS in the
local cache I have made some changes to how CSS is compiled and
how it is accessed via local cache.
Switch back to GCE build infrastructure for Travis Builds and move
databases to RAM Disk.
This also adds a software entropy generator (haveged) which is
recommended when using a RAMdisk for the database.
* Add the course's short name for a course event in order to let the
user know immediately which course an event belongs to. Particularly
helpful for activity events.
Also removed write_header() and write_footer(). The reason for this
is because in core we want to know if the format being used supports
multiple sheets. To do this, and ensure we do not break third-party
dataformat plugins, we are using method_exist(). If write_header()
and write_footer() remain in the base class then this will always
be true.
