cycle-pushstate-driver
v3.0.0
Published
A Cycle.js driver for working with the current URL
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Readme
Cycle PushState Driver
A Cycle.js driver for the History API.
Design Choices
This is a very minimal Cycle.js driver that simply isolates history.pushState
calls and popstate
events. It makes no assumption about how you want to filter and transform click/touch event streams to come up with the paths to push. Nor will it do e.preventDefault()
for you.
In the absence of pushState
support it lets the links work as normal links. This means that your preventDefault
driver needs to know not to capture these click/touch events.
Finally, it does not currently support history.replaceState
or the state argument of pushState
If you prefer a driver that covers all these cases, you may want to consider the TylorS/cycle-history
driver which is a batteries-included approach to the same problem.
API
makePushStateDriver ()
Returns a driver that calls history.pushState
on the input paths and outputs paths sent to pushState
as well as received with popstate
events, starting with the current path. If pushState
is not supported, this function returns a driver that simply emits the current path.
Install
npm install cycle-pushstate-driver
Usage
Basics:
import Cycle from '@cycle/core'
import { makePushStateDriver } from 'cycle-pushstate-driver'
function main (responses) {
// ...
}
const drivers = {
Path: makePushStateDriver()
}
Cycle.run(main, drivers)
Simple use case:
function main({ DOM, Path }) {
let localLinkClick$ = DOM.select('a').events('click')
.filter(e => e.currentTarget.host === location.host)
let navigate$ = localLinkClick$
.map(e => e.currentTarget.href)
let vtree$ = Path
.map(url => {
switch(url) {
case '/':
renderHome()
break
case '/user':
renderUser()
break
default:
render404()
break
}
})
return {
DOM: vtree$,
Path: navigate$,
preventDefault: localLinkClick$
};
}
Routing use case with switch-path
:
import switchPath from 'switch-path'
import routes from './routes'
function resolve (path) {
return switchPath(path, routes)
}
function main({ DOM, Path }) {
const localLinkClick$ = DOM.select('a').events('click')
.filter(e => e.currentTarget.host === location.host)
const navigate$ = localLinkClick$
.map(e => e.currentTarget.href)
const vtree$ = Path
.map(resolve)
.map(({ value }) => value)
return {
DOM: vtree$,
Path: navigate$,
preventDefault: localLinkClick$
};
}
Routing use case with wayfarer
:
import wayfarer from 'wayfarer'
function route (path$) {
const route$ = new Rx.ReplaySubject(1)
const r = name => params => route$.onNext({ name, params })
const router = wayfarer('/notfound')
router.on('/', r('owers'))
router.on('/owers/:ower', r('owees'))
router.on('/notfound', r('notfound'))
path$
.subscribe(
path => router(path),
route$.onError.bind(route$),
route$.onCompleted.bind(route$)
)
return route$
}
function main({ DOM, Path }) {
const Route = route(Path)
const localLinkClick$ = DOM.select('a').events('click')
.filter(e => e.currentTarget.host === location.host)
const navigate$ = localLinkClick$
.map(e => e.currentTarget.href)
const vtree$ = Rx.Observable.combineLatest(
Route, owersVtree$, oweesVtree$, notfoundVtree$,
(route, owersVtree, oweesVtree, notfoundVtree) => {
const vtrees = {
'owers': owersVtree,
'owees': oweesVtree,
'notfound': notfoundVtree
}
return vtrees[route.name]
}
)
return {
DOM: vtree$,
Path: navigate$,
preventDefault: localLinkClick$
};
}