Patch-history

Manage your history state in patchcore based apps. Patchcore and related modules use depject to provide (give) and consume (need) dependencies.

API

history.obs.store

(Not generally for public use)

The history store in the form of a Mutant Array. This is an observeable, which is excellent for building things with Mutant.

history.obs.location

The current location as in history, as Mutant Value.

A crude was to access the contents of a Mutant observeable is to call it:

const currentLocation = api.history.obs.location() // observeable
currentLocation() // => array

You can also subscribe listeners which will be called when the observeable updates:

const listener = (location) => console.log('new location', location)
currentLocation(listener)

history.sync.push

A synchronous method which allows you to push a new location onto the end of the history.

history.sync.back

A synchronous method which moves the current location back a step in histroy.

Example

// main.js
const combine = require('depject')
const entry = require('depject/entry')
const nest = require('depnest')

const sockets = combine(
  require('./index.js'), // an object of depject modules
  require('patch-history'),
  require('patchcore')
)

const api = entry(sockets, nest('app.html.app', 'first'))
const app = api.app.html.app()

// homePage.js
const html = require('yo-yo')

export.gives = nest('app.page.homePage')

exports.needs = nest({
  'history.sync.push': 'first'
  'history.sync.back': 'first'
})

exports.create = (api) => {
  return nest('app.page.homePage', homePage)

  function homePage () {
    const goToSettings = () => api.history.sync.push({ page: '/settings' }) 
    // you can push whatever you want into history, it's just an array

    return html`
      <div>
        <h1>Home Page</h1>
        <button onclick=${goToSettings}> settings </button>
      <div>
   `
  }
} 

// app.js
export.gives = nest('app.html.app')

exports.needs = nest({
  'history.obs.location': 'first',
  'history.sync.push': 'first',
  'router.sync.router': 'first'
})

exports.create = (api) => {
  return nest('app.html.app', app)

  function app () {
    const currentLocation = api.history.obs.location()
    currentLocation(renderPage)
    // currentLocation is an observable which can be passed listeners
    // these will be called when the location changes

    api.history.sync.push({ page: '/home' })
  }

  function renderPage (newLocation) {
    const newView = api.route.sync.router(newLocation)

    document.body.appendChild(newView)
    // crude 'rendering'!
  }
}