@jdcfe/yep-react/es/image-picker/ImagePicker.js

一套移动端的React组件库

import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _assertThisInitialized from "@babel/runtime/helpers/assertThisInitialized";
import _inherits from "@babel/runtime/helpers/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

import * as React from 'react';
import classNames from 'classnames';
import noop from '../_utils/noop';

var ImagePicker = /*#__PURE__*/function (_React$PureComponent) {
  _inherits(ImagePicker, _React$PureComponent);

  var _super = _createSuper(ImagePicker);

  function ImagePicker(props) {
    var _this;

    _classCallCheck(this, ImagePicker);

    _this = _super.call(this, props);
    _this.state = {};
    _this.fileChange = _this.fileChange.bind(_assertThisInitialized(_this));
    return _this;
  }

  _createClass(ImagePicker, [{
    key: "removeImagePriv",
    value: function removeImagePriv(index) {
      var _this$props$removeIma = this.props.removeImage,
          removeImage = _this$props$removeIma === void 0 ? function () {} : _this$props$removeIma;
      removeImage(index);
    }
  }, {
    key: "fileChange",
    value: function fileChange(e) {
      var _this$props = this.props,
          name = _this$props.name,
          formDataAction = _this$props.formDataAction,
          customSize = _this$props.customSize,
          fileLimitCallback = _this$props.fileLimitCallback;
      var file = e.target.files[0];
      var imgFormData = new FormData(); // 判断上传文件的类型，若不是jpeg jpg png gif类型，不执行上传操作

      if (file && file.type !== 'image/jpeg' && file.type !== 'image/png' && file.type !== 'image/gif') {
        return;
      }

      imgFormData.append("".concat(name), file && file); // 若customSize设置为0表示不限制图片大小，不设置或者设置为其他值表示采用默认图片大小

      if (customSize !== 0) {
        fileLimitCallback && fileLimitCallback(file && file);

        if (file && file.size > customSize * 1024) {
          return;
        }
      }

      var reader = new FileReader();

      reader.onload = function (e) {
        var currentTarget = e.currentTarget;
        var dataUrl = currentTarget && currentTarget.result;

        if (!dataUrl) {
          return;
        }

        formDataAction && formDataAction(imgFormData, {
          url: dataUrl
        });
      };

      file && reader.readAsDataURL(file);

      if (this.input) {
        this.input.value = '';
      }
    }
  }, {
    key: "render",
    value: function render() {
      var _this2 = this;

      var _this$props2 = this.props,
          files = _this$props2.files,
          name = _this$props2.name,
          height = _this$props2.height,
          width = _this$props2.width;
      var wrapperCls = classNames('Yep-upload-wrapper');
      return /*#__PURE__*/React.createElement("div", {
        className: wrapperCls
      }, files && files.map(function (imgItem, index) {
        return /*#__PURE__*/React.createElement("div", {
          className: "upload-flex-item",
          key: index
        }, /*#__PURE__*/React.createElement("div", {
          className: "upload-flex-item-del",
          onClick: function onClick() {
            _this2.removeImagePriv(index);
          }
        }), /*#__PURE__*/React.createElement("img", {
          className: "upload-flex-item-img",
          src: "".concat(imgItem.url),
          style: {
            width: width,
            height: height
          }
        }));
      }), /*#__PURE__*/React.createElement("div", {
        className: "upload-flex-item upload-add"
      }, /*#__PURE__*/React.createElement("div", {
        className: "upload-add-picker",
        style: {
          width: width,
          height: height
        }
      }, /*#__PURE__*/React.createElement("input", {
        ref: function ref(input) {
          _this2.input = input;
        },
        type: "file",
        name: name,
        accept: "image/*",
        onChange: this.fileChange
      }))));
    }
  }]);

  return ImagePicker;
}(React.PureComponent);

export { ImagePicker as default };
ImagePicker.defaultProps = {
  files: [],
  width: '75px',
  height: '75px',
  customSize: 1024,
  removeImage: noop
};