Some browsers, notably Firefox, do not return the computed style for
background colour in a computed RGB format. Instead they return the RGBA
where the alpha channel is set to fully transparent.
To solve this we need to work up the hierarchy and compute the
background colour for each parent node until we reach full alpha (1).
We can use a standard calculation to approximate the value for the
resultant element background by multiplying the alpha of the current
transparent (or semi-transparent) node with the R, G, or B channel in
question, and that of the parent node's background colour.
There are cases where this will not be 100% accurate - notably where
there is some additional content in addition to the parent background,
but this gives us a reasoable approximation for the majority of cases.
Additionally the code has never considered the full set of node content
when calculating this information.
There are various places where it's not guaranteed that the
variable being used is array, and instead, can be null, bool, int...
We need to check that because php74 warns about it.
Where possible we have used the coalesce operator as
replacement for isset() ternary operations.
This just deletes all the upgrade steps previous to 3.5.0. Some
small adjustments, like tweaking globals can also be applied
when needed.
Also includes an upgrade step to prevent upgrading from any
version < 2018051700 (v3.5.0) as anti-cheating measure.
Previous commits have removed/deprecated all the upgradelib functions
not used anymore in codebase. Deletion has been documented in corresponding
upgrade.txt files:
- upgrade_fix_block_instance_configuration()
- upgrade_theme_is_from_family(), upgrade_find_theme_location()
and linkcoursesectionsupgradescriptwasrun setting
- upgrade_block_positions
- upgrade_fix_config_auth_plugin_names()
and upgrade_fix_config_auth_plugin_defaults()
- format_xxx_upgrade_remove_numsections(), format_xxx_upgrade_hide_extra_sections()
and format_xxx_upgrade_add_empty_sections()
- filter_mathjaxloader_upgrade_cdn_cloudflare()
and filter_mathjaxloader_upgrade_mathjaxconfig_equal()
- get_assignments_with_rescaled_null_grades()
These have been kept because continue being used by restore:
- \core\task\refresh_mod_calendar_events_task
The H5P content used in behat for validating external URLs
behaviour shouldn't point h5p.org because it may stop working
(it's not for real content). These content have been moved to
moodle.h5p.com (payment account).
Besides, the scenarios loading content from external URLs
have been labelel with @external.
Significant string changes:
- configgeneralfiles,core_backup - includes explanation of implications
of settings
- mobilenotificationsdisabledwarning,tool_mobile - location corrected
- statsreport14,core - 'views/posts' corrected to 'posts/views'
- err_nousers,core_completion - explanation of who completion
- information is displayed for errorcourselisting,block_community - note
about sunsetting moodle.net
Add an event that can be fired when an mform is about to be submitted via ajax.
This allows custom field types to perform an action when the form is submitted.
The atto text editor will reset any autosaves when the form is submitted.
