In PHP 8.2 and later, setting a value to an undeclared class property is
deprecated and emits a deprecation notice.
So we need to add missing class properties that still need to be declared.
While working on this issue, even though it's not related to the deprecation issue,
I added 'use core_external\external_api' to avoid the 'Undefined type external_api' warning at
mod_lti_testcase::generate_tool_proxy().
So we are putting them under a standard PHP_MAJOR_VERSION < 8 condition.
Also, added TODO comments to remember to delete that block of code when
php80 becomes the minimum required versions in the future (Moodle 4.3?).
When possible, an issue has been created upstream, else a comment in
readme_moodle files has been added.
Finally, when the keys being freed were class or object attributes, also
nullify them (but when the calls were part of destructor methods).
* LTI service related changes:
** Fixing exceptions in OAuth library.
** Added new launch option, Existing window: replaces entire page with the LTI object.
** The LTI tool ID used to perform the launch is now sent with the LTI launch parameters. This is sent back to Moodle on subsequent requests.
** Added $CFG->mod_lti_forcessl to force SSL on all LTI launches.
** Added new LTI launch parameter: tool_consumer_instance_name. Default value is site full name, but can be customized with $CFG->mod_lti_institution_name.
** The LTI grade service endpoints now set the affected user to the session. This was required for event listeners.
** Fix the grade deletion service. Was deleting the grade item instead of just the grade.
** Send error response when LTI instance does not accept grades and grades are being sent.
** Added a method for writing incoming LTI requests to disk for debugging. Disabled by default.
* Changes for ltisource plugins:
** Can now to plug into backup/restore.
** Can now have settings.php files.
** Can now hook into the LTI launch and edit parameters.
* Several grade changes:
** Added standard_grading_coursemodule_elements to LTI instance edit form. This means LTI instances can be configured with a grade.
** No longer assumes that grade is out of 100.
** Replaced modl/lti:grade capability with mod/lti:view.
* JS on mod/lti/view.php for resizing the content object has been converted to YUI3.
* Fixed misspellings in language file.
* Added hooks for log post and view actions.
* Bug fix for lti_get_url_thumbprint() when the URL is missing a schema.
David Woloszyn