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October 18, 2018 11:24
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Renderless Flyout.Vue component
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<flyout v-cloak> | |
<div slot-scope="props"> | |
<button | |
v-on:click="props.toggle()" | |
v-bind:class="'border-2 p-1 ' + (props.isActive ? 'bg-green': 'bg-red')" | |
data-reference | |
>…</button> | |
<div | |
v-show="props.isActive" | |
class="list-reset bg-white border p-4 shadow z-10" | |
data-popper | |
> | |
Dropdown Content | |
</div> | |
</div> | |
</flyout> |
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<script> | |
import Popper from 'popper.js' | |
export default { | |
name: 'flyout', | |
data: function () { | |
return { | |
isActive: false, | |
popperOptions: | |
{ | |
placement: 'bottom-start', | |
modifiers: { | |
arrow: {enabled: false}, | |
preventOverflow: { | |
boundariesElement: 'viewport' | |
}, | |
flip: { | |
behavior: ['bottom-start', 'bottom-end', 'top-start', 'top-end'], | |
boundariesElement: 'viewport' | |
} | |
} | |
} | |
} | |
}, | |
render () { | |
return this.$scopedSlots.default({ | |
isActive: this.isActive, | |
toggle: this.toggle | |
}) | |
}, | |
created () {}, | |
destroyed () { | |
this.destroyPopper() | |
}, | |
mounted () { | |
this.referenceElement = this.$el.querySelectorAll('[data-reference]')[0] | |
this.popperElement = this.$el.querySelectorAll('[data-popper]')[0] | |
this.popper = null | |
}, | |
watch: { | |
isActive: function (isActive) { | |
(isActive) ? this.createPopper() : this.destroyPopper() | |
} | |
}, | |
methods: { | |
toggle () { | |
this.isActive = !this.isActive | |
}, | |
createPopper () { | |
if (this.popper) { | |
return | |
} | |
this.popper = new Popper( | |
this.referenceElement, | |
this.popperElement, | |
this.popperOptions | |
) | |
document.addEventListener('click', this.handleDocumentClick) | |
}, | |
destroyPopper () { | |
if (!this.popper) { | |
return | |
} | |
this.popper.destroy() | |
this.popper = null | |
document.removeEventListener('click', this.handleDocumentClick) | |
}, | |
handleDocumentClick (e) { | |
let target = e.target | |
if ( | |
this.referenceElement === target || | |
this.popperElement === target || | |
this.referenceElement.contains(target) || | |
this.popperElement.contains(target) | |
) { | |
return | |
} | |
this.isActive = false | |
} | |
} | |
} | |
</script> |
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