materio-d9/web/themes/custom/materiotheme/vuejs/components/cardMixins.js

109 lines
3.9 KiB
JavaScript

// https://forum.vuejs.org/t/how-to-use-helper-functions-for-imported-modules-in-vuejs-vue-template/6266/5
export default {
directives: {
lazy: {
bind (figure, binding) {
console.log('directive lazy bind', figure, binding)
// show only the first image
if (binding.value === 0) {
const img = figure.querySelector('img:not(.blank)')
figure.classList.add('loading')
img.addEventListener('load', function (e) {
console.log('img loaded', e)
figure.classList.remove('loading')
figure.classList.add('loaded')
})
img.addEventListener('error', function (e) {
console.error('img ERROR', e)
e.target.classList.remove('loading')
e.target.classList.add('error')
})
img.setAttribute('src', img.getAttribute('data-src'))
// img.removeAttribute('data-src')
// img.classList.remove('lazy')
}
}
},
switcher: {
inserted (el, binding) {
// switch images on mousemove
el.addEventListener('mousemove', function (event) {
const figs = this.querySelectorAll('figure.loaded')
// console.log('mousemove', figs.length, this, event)
// let len = figs.length
// let w = this.clientWidth;
// let g = w / len;
// let delta = Math.floor(event.layerX / g)
// console.log(event.offsetX, this.clientWidth, figs.length)
// console.log(event.offsetX / (this.clientWidth / figs.length))
let delta = Math.floor(event.offsetX / (this.clientWidth / figs.length))
delta = delta < 0 ? 0 : delta >= figs.length ? figs.length - 1 : delta
// console.log('delta', delta)
figs.forEach((fig, index) => {
// console.log(index)
if (index === delta) {
// fig.style.display = "block"
fig.classList.remove('hide')
fig.classList.add('show')
} else {
// fig.style.display = "none"
fig.classList.remove('show')
fig.classList.add('hide')
}
})
})
}
}
},
mounted () {
// lazy load images on mouseover
console.log('card mounted', this.$options.name)
// if (this.$options.name ==! 'ModalCard') {
this.activateLazyLoad()
// }
},
updated () {
// lazy load images on mouseover
console.log('card updated', this.$options.name)
// if (this.$options.name ==! 'ModalCard') {
this.activateLazyLoad()
// }
},
methods: {
// used by ModalCard
activateLazyLoad () {
console.log('card activateLazyLoad', this.$options.name)
this.$el.addEventListener('mouseover', function (event) {
const figures = this.querySelectorAll('.images figure.lazy:not(.loaded):not(.loading)')
console.log('mouseover', this, figures)
figures.forEach((figure, index) => {
const img = figure.querySelector('img:not(.blank)')
// console.log('forEach img',img)
img.classList.add('loading')
img.addEventListener('load', function (e) {
// console.log('img loaded', e)
figure.classList.remove('loading')
figure.classList.add('loaded')
})
img.addEventListener('error', function (e) {
console.error('img ERROR', figure, e)
})
const src = img.getAttribute('data-src')
// for debug purpose
console.log(figures.length, index)
// let src = img.getAttribute('data-src')
// if (index > 0 && index < figures.length - 1) {
// src = img.getAttribute('data-src').replace('?', '/bad?')
// }
img.setAttribute('src', src)
// img.removeAttribute('data-src')
// img.classList.remove('lazy')
})
}, { once: true })
}
}
}