vxe-table-select-area/packages/select-area/utils/index.js

一个基于 vxe-table 的可区域选中复制、粘贴的组件

// import { createI18N } from "../locale/index";

/*
 * @createLocale
 * @desc create namespace by comp name
 * @param {string} compName
 * @return {function}
 */
// export function createLocale(compName) {
//     return createI18N(compName);
// }

/*
 * @isEmptyArray
 * @desc  is empty array
 * @param {array} arr
 */
export function isEmptyArray (arr) {
  return !(Array.isArray(arr) && arr.length > 0)
}

/*
 * @isEmptyValue
 * @desc  is empty value
 * @param {array} arr
 */
export function isEmptyValue (value) {
  return !(value !== '' && value !== undefined && value !== null)
}

/*
 * @isDefined
 * @desc is defined
 * @param {any} val
 */
export function isDefined (val) {
  return val !== undefined && val !== null
}

/*
 * @isObject
 * @desc is object
 * @param {any} val
 */
export function isObject (val) {
  return val !== null && typeof val === 'object'
}

/*
 * @isFunction
 * @desc is function
 * @param {any} val
 */
export function isFunction (val) {
  return typeof val === 'function'
}

/*
 * @isBoolean
 * @desc is boolean
 * @param {any} val
 */
export function isBoolean (val) {
  return typeof val === 'boolean'
}

/*
 * @isNumber
 * @desc is number
 * @param {any} val
 */
export function isNumber (val) {
  return typeof val === 'number'
}

/*
 * @isTrue
 * @desc is equal true
 * @param {any} val
 */
export function isTrue (val) {
  return isBoolean(val) && val
}

/*
 * @isFalse
 * @desc is equal false
 * @param {any} val
 */
export function isFalse (val) {
  return isBoolean(val) && !val
}

/*
 * @getValByUnit
 * @desc  get value by unit
 * @param {number|string} width - 宽度
 */
export function getValByUnit (width) {
  return typeof width === 'number' ? width + 'px' : width
}

/*
 * @getParentCompByName
 * @desc  get parent comp by name
 * @param {object} context
 * @param {string} name - parent comp name
 */
export function getParentCompByName (context, name) {
  let parent = context.$parent

  while (parent) {
    if (parent.$options.name !== name) {
      parent = parent.$parent
    } else {
      return parent
    }
  }

  return null
}

/*
 * @getChildCompsByName
 * @desc  get child comps by name
 * @param {object} context
 * @param {string} name - child comp name
 */
export function getChildCompsByName (context, name) {
  const result = []

  let childrens = context.$children

  while (childrens && childrens.length > 0) {
    childrens.forEach((child) => {
      childrens = child.$children ? child.$children : null

      if (child.$options.name === name) {
        result.push(child)
      }
    })
  }

  return result
}

/*
 * @scrollTo
 * @desc element scrollTo https://developer.mozilla.org/zh-CN/docs/Web/API/Element/scrollTo
 * @param {element} el - element
 * @param {object} option - scroll option
 */
export function scrollTo (el, option) {
  if (isFunction(el.scrollTo)) {
    el.scrollTo(option)
  } else {
    const { top, left } = option
    el.scrollTop = top
    el.scrollLeft = left
  }
}