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import BaseLayout from './baseLayout'
const Drawer = (($) => {
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
const NAME = 'drawer'
const DATA_KEY = `bmd.${NAME}`
const JQUERY_NAME = `bmd${NAME.charAt(0).toUpperCase() + NAME.slice(1)}`
const JQUERY_NO_CONFLICT = $.fn[JQUERY_NAME]
const Keycodes = {
ESCAPE: 27
//ENTER: 13,
//SPACE: 32
}
const ClassName = {
IN: 'in',
DRAWER_IN: `bmd-drawer-in`,
DRAWER_OUT: `bmd-drawer-out`,
DRAWER: 'bmd-layout-drawer',
CONTAINER: 'bmd-layout-container'
}
const Default = {
focusSelector: `a, button, input`
}
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
class Drawer extends BaseLayout {
// $element is expected to be the trigger
// i.e. <button class="btn bmd-btn-icon" for="search" data-toggle="drawer" data-target="#my-side-nav-drawer" aria-expanded="false" aria-controls="my-side-nav-drawer">
constructor($element, config) {
super($element, $.extend(true, {}, Default, config))
this.$toggles = $(`[data-toggle="drawer"][href="#${this.$element[0].id}"], [data-toggle="drawer"][data-target="#${this.$element[0].id}"]`)
this._addAria()
// click or escape on the backdrop closes the drawer
this.$backdrop.keydown((ev) => {
if (ev.which === Keycodes.ESCAPE) {
this.hide()
}
}).click(() => {
this.hide()
})
// escape on the drawer closes it
this.$element.keydown((ev) => {
if (ev.which === Keycodes.ESCAPE) {
this.hide()
}
})
// any toggle button clicks
this.$toggles.click(() => {
this.toggle()
})
}
dispose() {
super.dispose(DATA_KEY)
this.$toggles = null
}
toggle() {
if (this._isOpen()) {
this.hide()
} else {
this.show()
}
}
show() {
if (this._isForcedClosed() || this._isOpen()) {
return
}
this.$toggles.attr('aria-expanded', true)
this.$element.attr('aria-expanded', true)
this.$element.attr('aria-hidden', false)
// focus on the first focusable item
let $focusOn = this.$element.find(this.config.focusSelector)
if ($focusOn.length > 0) {
$focusOn.first().focus()
}
this.$container.addClass(ClassName.DRAWER_IN)
// backdrop is responsively styled based on bmd-drawer-overlay, therefore style is none of our concern, simply add the marker class and let the scss determine if it should be displayed or not.
this.$backdrop.addClass(ClassName.IN)
}
hide() {
if (!this._isOpen()) {
return
}
this.$toggles.attr('aria-expanded', false)
this.$element.attr('aria-expanded', false)
this.$element.attr('aria-hidden', true)
this.$container.removeClass(ClassName.DRAWER_IN)
this.$backdrop.removeClass(ClassName.IN)
}
// ------------------------------------------------------------------------
// private
_isOpen() {
return this.$container.hasClass(ClassName.DRAWER_IN)
}
_isForcedClosed() {
return this.$container.hasClass(ClassName.DRAWER_OUT)
}
_addAria() {
let isOpen = this._isOpen()
this.$element.attr('aria-expanded', isOpen)
this.$element.attr('aria-hidden', isOpen)
if (this.$toggles.length) {
this.$toggles.attr('aria-expanded', isOpen)
}
}
// ------------------------------------------------------------------------
// static
static _jQueryInterface(config) {
return this.each(function () {
let $element = $(this)
let data = $element.data(DATA_KEY)
if (!data) {
data = new Drawer($element, config)
$element.data(DATA_KEY, data)
}
})
}
}
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
$.fn[JQUERY_NAME] = Drawer._jQueryInterface
$.fn[JQUERY_NAME].Constructor = Drawer
$.fn[JQUERY_NAME].noConflict = () => {
$.fn[JQUERY_NAME] = JQUERY_NO_CONFLICT
return Drawer._jQueryInterface
}
return Drawer
})(jQuery)
export default Drawer
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