<template>
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<div
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class="el-upload-dragger"
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:class="{
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'is-dragover': dragover
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}"
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@drop.prevent="onDrop"
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@dragover.prevent="onDragover"
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@dragleave.prevent="dragover = false"
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>
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<slot></slot>
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</div>
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</template>
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<script>
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export default {
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name: 'ElUploadDrag',
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props: {
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disabled: Boolean
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},
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inject: {
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uploader: {
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default: ''
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}
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},
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data() {
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return {
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dragover: false
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};
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},
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methods: {
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onDragover() {
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if (!this.disabled) {
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this.dragover = true;
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}
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},
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onDrop(e) {
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if (this.disabled || !this.uploader) return;
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const accept = this.uploader.accept;
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this.dragover = false;
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if (!accept) {
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this.$emit('file', e.dataTransfer.files);
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return;
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}
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this.$emit('file', [].slice.call(e.dataTransfer.files).filter(file => {
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const { type, name } = file;
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const extension = name.indexOf('.') > -1
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? `.${ name.split('.').pop() }`
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: '';
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const baseType = type.replace(/\/.*$/, '');
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return accept.split(',')
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.map(type => type.trim())
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.filter(type => type)
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.some(acceptedType => {
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if (/\..+$/.test(acceptedType)) {
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return extension === acceptedType;
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}
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if (/\/\*$/.test(acceptedType)) {
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return baseType === acceptedType.replace(/\/\*$/, '');
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}
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if (/^[^\/]+\/[^\/]+$/.test(acceptedType)) {
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return type === acceptedType;
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}
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return false;
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});
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}));
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}
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}
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};
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</script>
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