@sncf/bootstrap-sncf.communication/src/js/components/states.js

SNCF frontend framework

import $ from 'jquery'

/* states
 ========================================================================== */

/* eslint-disable */
const add = 'add'
const remove = 'remove'
const toggle = 'toggle'
const arias = [
  {
    type: 'aria-hidden',
    init: false
  },
  {
    type: 'aria-disabled',
    init: false
  },
  {
    type: 'aria-selected',
    init: true
  },
  {
    type: 'aria-expanded',
    init: true
  },
  {
    type: 'aria-pressed',
    init: true
  },
  {
    type: 'aria-checked',
    init: true
  }
]

const setClass = function (elem, stateClass, behaviour) {
  if (stateClass !== 'false') {
    if (behaviour === add) {
      elem.classList.add(stateClass)
    } else if (behaviour === remove) {
      elem.classList.remove(stateClass)
    } else {
      elem.classList.toggle(stateClass)
    }
  }
}

const setAria = function (elem, behaviour) {
  arias.forEach((aria) => {
    const { type } = aria
    const { init } = aria

    if (elem.hasAttribute(type)) {
      if (behaviour === add) {
        if (!init) {
          elem.setAttribute(type, false)
        } else {
          elem.setAttribute(type, true)
        }
      } else if (behaviour === remove) {
        if (!init) {
          elem.setAttribute(type, true)
        } else {
          elem.setAttribute(type, false)
        }
      } else {
        elem.setAttribute(type, elem.getAttribute(type) !== 'true')
      }
    }
  })
}

const setTabindex = function (elem, tabindex, behaviour) {
  if (tabindex === 'true') {
    if (behaviour === add) {
      elem.setAttribute('tabindex', 0)
    } else if (behaviour === remove) {
      elem.setAttribute('tabindex', -1)
    } else {
      elem.setAttribute('tabindex', elem.getAttribute('tabindex') === '-1' ? 0 : -1)
    }
  }
}

const setState = function (parameters) {
  parameters.behaviours.forEach((behaviour, index) => {
    const elems = document.querySelectorAll(parameters.targets[index])
    const stateClass = parameters.states[index]
    const tabindex = parameters.tabindexes !== null ? parameters.tabindexes[index] : null

    elems.forEach((elem) => {
      if (behaviour === add) {
        setClass(elem, stateClass, add)
        setAria(elem, add)
        setTabindex(elem, tabindex, add)
      } else if (behaviour === remove) {
        setClass(elem, stateClass, remove)
        setAria(elem, remove)
        setTabindex(elem, tabindex, remove)
      } else {
        setClass(elem, stateClass, toggle)
        setAria(elem, toggle)
        setTabindex(elem, tabindex, toggle)
      }

      if (parameters.closeOnClickOutside[index] === "true") {
        elem.querySelectorAll('[data-toggle=collapse]').forEach((toggle) => {
          toggle.addEventListener('click', (event) => {
            event.currentTarget.classList.toggle('active')
            // bootstrap jQuery collapse
            $(event.currentTarget.dataset.target).collapse('toggle')
          })
        })

        document.addEventListener('click', () => {
          setClass(elem, stateClass, remove)
        })

        elem.addEventListener('click', (event) => {
          event.stopPropagation()
        })
      }
    })
  })
}

export default function state(component) {
  const parameters = {
    behaviours: component.dataset.behaviour.split(', '),
    states: component.dataset.state.split(', '),
    tabindexes: component.dataset.tabindex ? component.dataset.tabindex.split(', ') : null,
    targets: component.dataset.target.split(', '),
    closeOnClickOutside: component.dataset.closeonclickoutside ? component.dataset.closeonclickoutside.split(', ') : []
  }

  component.addEventListener('click', (event) => {
    event.preventDefault()
    event.stopPropagation()

    setState(parameters)
  })

  component.addEventListener('keypress', (event) => {
    if (event.which === 13) {
      event.preventDefault()
      event.stopPropagation()

      setState(parameters)
    }
  })
}
/* eslint-enable */