GWT natives for LibGDX Autumn - dependency injection with component scan mechanism.
Autumn GWT generates an object aware of all LibGDX-reflected classes, registered with standard gdx.reflect.include (and omitted with gdx.reflect.exclude) GWT definition property. GwtClassScanner is the default Autumn's ClassScanner implementation for GWT - it will detect all annotated classes that were included for LibGDX reflection.
Sometimes upon application initiation you might see an error like this:
(...) Couldn't find Type for class (...)
This means that the class was referenced by some reflection-based methods, but was not properly included in the reflection pool. An error like this might be thrown for all kinds of strange reasons, with all kinds of unexpected classes. While it might be thrown for types that you commonly inject as assets in Autumn, like Sound or TextureAtlas, it also might need some obscure class that you don't even seem to use.
Adding these classes to reflection pool solves the problem most of the times (if it doesn't - don't hesitate to contact me). After replacing names with your packages and classes, try adding one of these to your GWT module:
<extend-configuration-property name="gdx.reflect.include" value="path.of.problematic.package" />
<extend-configuration-property name="gdx.reflect.include" value="problematic.package.ProblematicClass" />
If one of your components fails to initiate, make sure that all of its extended super classes (and, if desperate, all implemented interfaces) are included in reflection pool. This is sometimes the issue, as super classes might need to be reflected for correct scan of annotations.
Gradle dependency (for GWT LibGDX project):
compile "com.github.czyzby:gdx-autumn-gwt:$libVersion.$gdxVersion"
compile "com.github.czyzby:gdx-autumn-gwt:$libVersion.$gdxVersion:sources"
$libVersion is the current version of the library, usually following MAJOR.MINOR schema. $gdxVersion is the LibGDX version used to build (and required by) the library. You can check the current library version here - or you can use the snapshots.
GWT module:
<inherits name='com.github.czyzby.autumn.gwt.GdxAutumnGwt' />