The event subscriber approach means that dependencies have to be
injected (and thus instantiated, along with all *their* dependencies) at
the time of registering event listeners - even when events are never
fired within a request's lifecycle.
This is unnecessary and causes more classes than necessary to be loaded.
In this case, we can explicitly register event listeners that will
resolve their dependencies when the event is fired, not before.
Refs #1578.
- Simpler class naming:
Frontend\CompilerFactory → Frontend\Assets
Frontend\HtmlDocumentFactory → Frontend\Frontend
Frontend\HtmlDocument → Frontend\Document
- Remove AssetInterface and simply collect callbacks in Frontend\Assets
instead
- Remove ContentInterface because it serves no purpose (never type-
hinted or type-checked)
- Commit and add asset URLs to the Document via a content callback
instead of in the Document factory class itself
- Add translations and locale assets to Assets separate to the assets
factory, as non-forum/admin asset bundles probably won't want them
- Update Frontend Extender to allow the creation of new asset bundles
- Make custom LESS validation listener a standalone class instead of
extending RecompileFrontendAssets
This can be achieved using the Route extender, which is more
flexible, as it does not necessary connect the URL with the current
frontend's router.
(Example use-case: The ext-embed frontend will be a new frontend,
however any routes using this frontend will be part of the forum
route group.)
Refs #851.
