re-frame.handlers — org.clojars.stumitchell/re-frame 0.2.0

comp-middleware cljs

(comp-middleware v)

Given a vector of middleware, filter out any nils, and use "comp" to compose them. v can have nested vectors, and will be flattended before "comp" is applied. For convienience, if v turns out to already be a function (assumed to be middleware), just return it. Filtering out nils allows us to create Middlewhere conditionally like this: (comp-middleware [pure (when debug? debug)]) ;; that 'when' might leave a nil

dispatch cljs

(dispatch event-v)

Send an event to be processed by the registered handler.

Usage example: (dispatch [:delete-item 42])

dispatch-sync cljs

(dispatch-sync event-v)

Invoke the event handler sycronously, avoiding the async-inducing use of core.async/chan

handle cljs

(handle event-v)

Given an event vector, look up the right handler, then call it. By default, handlers are not assumed to be pure. They are called with two paramters:

• the app-db atom and
• the event vector The handler is assumed to side-effect on the atom, the return value is ignored. To write pure handlers, use the "pure" middleware when registering the handler.

lookup-handler cljs

(lookup-handler event-id)

register cljs

(register event-id handler-fn)

(register event-id middleware handler-fn)

register a handler for an event