jc-biz-components/lib/jc-upload/utils.js

jc component library based on Antd

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

var _message2 = require('antd/lib/message');

var _message3 = _interopRequireDefault(_message2);

exports.beforeUpload = beforeUpload;
exports.onPreview = onPreview;
exports.fileToObject = fileToObject;
exports.genPercentAdd = genPercentAdd;
exports.getFileItem = getFileItem;
exports.modifyFileItem = modifyFileItem;
exports.changeIndex = changeIndex;
exports.removeFileItem = removeFileItem;

require('antd/lib/message/style');

var _modal = require('../jc-modal');

var _modal2 = _interopRequireDefault(_modal);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

function beforeUpload(file) {
  if (file.type === 'image/jpeg' || file.type === 'image/jpg' || file.type === 'image/png') {
    var isLt10M = file.size < 1024 * 5000;
    if (!isLt10M) {
      _message3['default'].error('图片不能大于5MB!');
    }
    return isLt10M;
  } else {
    _message3['default'].error('请上传图片文件！');
    return false;
  }
}

function onPreview(file) {
  var html = React.createElement('img', { alt: 'preview', style: { width: '100%' }, src: file.url });
  (0, _modal2['default'])(html);
}

// Fix IE file.status problem
// via coping a new Object
function fileToObject(file) {
  return {
    lastModified: file.lastModified,
    lastModifiedDate: file.lastModifiedDate,
    name: file.filename || file.name,
    size: file.size,
    type: file.type,
    uid: file.uid,
    response: file.response,
    error: file.error,
    percent: 0,
    originFileObj: file,
    status: null
  };
}

/**
 * 生成Progress percent: 0.1 -> 0.98
 *   - for ie
 */
function genPercentAdd() {
  var k = 0.1;
  var i = 0.01;
  var end = 0.98;
  return function (s) {
    var start = s;
    if (start >= end) {
      return start;
    }

    start += k;
    k = k - i;
    if (k < 0.001) {
      k = 0.001;
    }
    return start * 100;
  };
}

function getFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  return fileList.filter(function (item) {
    return item[matchKey] === file[matchKey];
  })[0];
}

function modifyFileItem(file, fileList, object) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  return fileList.map(function (item) {
    if (item[matchKey] === file[matchKey]) {
      return (0, _extends3['default'])({}, item, object);
    }
    return item;
  });
}

var forwardIndex = function forwardIndex(fileList, index) {
  var temp = null;
  if (index === 0 || index > fileList.length - 1) {
    return fileList;
  }
  temp = fileList[index];
  fileList[index] = fileList[index - 1];
  fileList[index - 1] = temp;
  return fileList;
};

var backIndex = function backIndex(fileList, index) {
  var temp = null;
  if (index === fileList.length - 1 || index > fileList.length - 1) {
    return fileList;
  }
  temp = fileList[index];
  fileList[index] = fileList[index + 1];
  fileList[index + 1] = temp;
  return fileList;
};

function changeIndex(file, fileList, value) {
  var index = fileList.indexOf(file);
  if (value === 0) {
    return forwardIndex(fileList, index);
  }
  return backIndex(fileList, index);
}

function removeFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  var removed = fileList.filter(function (item) {
    return item[matchKey] !== file[matchKey];
  });
  if (removed.length === fileList.length) {
    return null;
  }
  return removed;
}