navbar-toggle.js
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import { extend } from '../../vue'
import { NAME_COLLAPSE, NAME_NAVBAR_TOGGLE } from '../../constants/components'
import { EVENT_NAME_CLICK } from '../../constants/events'
import { PROP_TYPE_ARRAY_STRING, PROP_TYPE_BOOLEAN, PROP_TYPE_STRING } from '../../constants/props'
import { SLOT_NAME_DEFAULT } from '../../constants/slots'
import { getRootEventName } from '../../utils/events'
import { makeProp, makePropsConfigurable } from '../../utils/props'
import { listenOnRootMixin } from '../../mixins/listen-on-root'
import { normalizeSlotMixin } from '../../mixins/normalize-slot'
import { VBToggle } from '../../directives/toggle/toggle'
// --- Constants ---
const CLASS_NAME = 'navbar-toggler'
const ROOT_EVENT_NAME_STATE = getRootEventName(NAME_COLLAPSE, 'state')
const ROOT_EVENT_NAME_SYNC_STATE = getRootEventName(NAME_COLLAPSE, 'sync-state')
// --- Props ---
export const props = makePropsConfigurable(
{
disabled: makeProp(PROP_TYPE_BOOLEAN, false),
label: makeProp(PROP_TYPE_STRING, 'Toggle navigation'),
target: makeProp(PROP_TYPE_ARRAY_STRING, undefined, true) // Required
},
NAME_NAVBAR_TOGGLE
)
// --- Main component ---
// @vue/component
export const BNavbarToggle = /*#__PURE__*/ extend({
name: NAME_NAVBAR_TOGGLE,
directives: { VBToggle },
mixins: [listenOnRootMixin, normalizeSlotMixin],
props,
data() {
return {
toggleState: false
}
},
created() {
this.listenOnRoot(ROOT_EVENT_NAME_STATE, this.handleStateEvent)
this.listenOnRoot(ROOT_EVENT_NAME_SYNC_STATE, this.handleStateEvent)
},
methods: {
onClick(event) {
if (!this.disabled) {
// Emit courtesy `click` event
this.$emit(EVENT_NAME_CLICK, event)
}
},
handleStateEvent(id, state) {
// We listen for state events so that we can pass the
// boolean expanded state to the default scoped slot
if (id === this.target) {
this.toggleState = state
}
}
},
render(h) {
const { disabled } = this
return h(
'button',
{
staticClass: CLASS_NAME,
class: { disabled },
directives: [{ name: 'VBToggle', value: this.target }],
attrs: {
type: 'button',
disabled,
'aria-label': this.label
},
on: { click: this.onClick }
},
[
this.normalizeSlot(SLOT_NAME_DEFAULT, { expanded: this.toggleState }) ||
h('span', { staticClass: `${CLASS_NAME}-icon` })
]
)
}
})