vant-fork/lib/uploader/index.js

Lightweight Mobile UI Components built on Vue

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

exports.__esModule = true;
exports.default = void 0;

var _create = _interopRequireDefault(require("../utils/create"));

var _default = (0, _create.default)({
  render: function render() {
    var _vm = this;

    var _h = _vm.$createElement;

    var _c = _vm._self._c || _h;

    return _c('div', {
      class: _vm.b()
    }, [_vm._t("default"), _c('input', _vm._b({
      ref: "input",
      class: _vm.b('input'),
      attrs: {
        "type": "file",
        "accept": _vm.accept,
        "disabled": _vm.disabled
      },
      on: {
        "change": _vm.onChange
      }
    }, 'input', _vm.$attrs, false))], 2);
  },
  name: 'uploader',
  inheritAttrs: false,
  props: {
    disabled: Boolean,
    beforeRead: Function,
    afterRead: Function,
    accept: {
      type: String,
      default: 'image/*'
    },
    resultType: {
      type: String,
      default: 'dataUrl'
    },
    maxSize: {
      type: Number,
      default: Number.MAX_VALUE
    }
  },
  methods: {
    onChange: function onChange(event) {
      var _this = this;

      var files = event.target.files;

      if (this.disabled || !files.length) {
        return;
      }

      files = files.length === 1 ? files[0] : [].slice.call(files, 0);

      if (!files || this.beforeRead && !this.beforeRead(files)) {
        return;
      }

      if (Array.isArray(files)) {
        Promise.all(files.map(this.readFile)).then(function (contents) {
          var oversize = false;
          var payload = files.map(function (file, index) {
            if (file.size > _this.maxSize) {
              oversize = true;
            }

            return {
              file: files[index],
              content: contents[index]
            };
          });

          _this.onAfterRead(payload, oversize);
        });
      } else {
        this.readFile(files).then(function (content) {
          _this.onAfterRead({
            file: files,
            content: content
          }, files.size > _this.maxSize);
        });
      }
    },
    readFile: function readFile(file) {
      var _this2 = this;

      return new Promise(function (resolve) {
        var reader = new FileReader();

        reader.onload = function (event) {
          resolve(event.target.result);
        };

        if (_this2.resultType === 'dataUrl') {
          reader.readAsDataURL(file);
        } else if (_this2.resultType === 'text') {
          reader.readAsText(file);
        }
      });
    },
    onAfterRead: function onAfterRead(files, oversize) {
      if (oversize) {
        this.$emit('oversize', files);
      } else {
        this.afterRead && this.afterRead(files);
        this.$refs.input && (this.$refs.input.value = '');
      }
    }
  }
});

exports.default = _default;