Current Directory: /home/astoriaah/www/templates/yootheme/vendor/assets/uikit/src/js/core
Viewing File: /home/astoriaah/www/templates/yootheme/vendor/assets/uikit/src/js/core/scrollspy-nav.js
import {$, $$, addClass, closest, filter, height, isInView, offset, removeClass, trigger} from 'uikit-util';
export default {
props: {
cls: String,
closest: String,
scroll: Boolean,
overflow: Boolean,
offset: Number
},
data: {
cls: 'uk-active',
closest: false,
scroll: false,
overflow: true,
offset: 0
},
computed: {
links(_, $el) {
return $$('a[href^="#"]', $el).filter(el => el.hash);
},
elements() {
return this.closest ? closest(this.links, this.closest) : this.links;
},
targets() {
return $$(this.links.map(el => el.hash).join(','));
}
},
update: [
{
read() {
if (this.scroll) {
this.$create('scroll', this.links, {offset: this.offset || 0});
}
}
},
{
read(data) {
const scroll = window.pageYOffset + this.offset + 1;
const max = height(document) - height(window) + this.offset;
data.active = false;
this.targets.every((el, i) => {
const {top} = offset(el);
const last = i + 1 === this.targets.length;
if (!this.overflow && (i === 0 && top > scroll || last && top + el.offsetTop < scroll)) {
return false;
}
if (!last && offset(this.targets[i + 1]).top <= scroll) {
return true;
}
if (scroll >= max) {
for (let j = this.targets.length - 1; j > i; j--) {
if (isInView(this.targets[j])) {
el = this.targets[j];
break;
}
}
}
return !(data.active = $(filter(this.links, `[href="#${el.id}"]`)));
});
},
write({active}) {
this.links.forEach(el => el.blur());
removeClass(this.elements, this.cls);
if (active) {
trigger(this.$el, 'active', [active, addClass(this.closest ? closest(active, this.closest) : active, this.cls)]);
}
},
events: ['scroll', 'load', 'resize']
}
]
};