This is part of http://docs.moodle.org/en/Development:Theme_engines_for_Moodle%3F
The concept is that all the print_... functions in weblib get replaced by methods
on a moodle_core_renderer class. Then, the theme can choose whether to
use the standard moodle_core_renderer class, or another implemenatation of
its own choosing, to generate different HTML.
Also, becuase Moodle is modular, we may need a moodle_mod_forum_renderer
and so on.
In order for the theme to be able to choose which renderers get created, we
introduce the concept of a renderer factory, as in the factory design pattern.
The theme will choose which factory should be used, and that then creates
the renderer objects based on the module name.
This commit includes 4 types of factory:
* standard_renderer_factory
* custom_corners_renderer_factory
* theme_overridden_renderer_factory
* template_renderer_factory
All this with unit tests and PHP doc comments.
Note, this new code is not actually used yet. Still todo:
1. actually define the moodle_core_renderer class, and deprecate a lot of weblib functions.
2. make theme_setup initialise everything, so it is used.
Start calling $PAGE->set_url in all the places it will be necessary
Start of a stub implementation of $PAGE->blocks to stop other things breaking
Remove some of the special case methods in admin_page
To replace unmaintained magipie. Simplepie is actively maintained has some
nice features such as feed autodisovery. Implemented a simple extended class
which uses the Moodle core curl class from filelib.
Added unit test using the moodle.org sample files. Please note these tests will
fail if moodle can't make http connections out, so ensure proxy settings
etc are correct.
* Rename filter base class from filter_base to moodle_text_filter
* Remove unnecessary explicit constructors in moodle_text_filter
subclasses
* New filter_manager class, rather than static methods in filter_base
* Move some logic out of weblib, and into filter_manager
* Count filtering ops when $CFG->perfdebug on, via
performance_measuring_filter_manager
* Kill unused filter_string function. Petr said it should have been
private to weblib
