dom 封装的一些 dom 操作函数

/**
 * 移入元素后禁用右键菜单,移出之后恢复
 * @param el
 */
export function disableRightClick(el: string | HTMLElement) {
  const ele = typeof el === 'string' ? (document.querySelector(el) as HTMLElement) : el
  const { oncontextmenu } = document
  const { onmousedown } = document
  ele.onmouseenter = () => {
    const click = (e: any) => {
      if (e.button === 2) {
        const tag = e.srcElement || e.target
        if (tag.type === 'text' || tag.type === 'textarea') {
          document.oncontextmenu = () => false
        } else {
          document.oncontextmenu = () => false
        }
      }
    }
    document.onmousedown = click
    document.oncontextmenu = () => false
  }
  ele.onmouseleave = () => {
    document.oncontextmenu = oncontextmenu
    document.onmousedown = onmousedown
  }
}

export function uploadFn(option?: { accept?: string; multiple?: boolean }): Promise<File[]> {
  return new Promise(resolve => {
    const input = document.createElement('input')
    input.accept = option?.accept || '*'
    input.type = 'file'
    input.multiple = !!option?.multiple
    input.click()
    input.onchange = () => {
      resolve(input.files as any as File[])
    }
  })
}

export function isChild(parent: HTMLElement | null, child: HTMLElement | null) {
  if (!parent || !child) return false
  if (parent === child) return false
  if (parent.contains(child)) return true
  return isChild(parent.parentElement, child)
}

/**
 * 禁止debugger
 * 当窗口inner和outer尺寸不一致时会通过判断打开了控制台，然后将window.isDebug赋值为true
 */
export function disableDebug() {
  function block() {
    if (
      window.outerHeight - window.innerHeight > 200 ||
      window.outerWidth - window.innerWidth > 200
    ) {
      document.body.innerHTML = '检测到非法调试,请关闭后刷新重试!'
      // @ts-ignore
      window.isDebug = true
    }

    setInterval(() => {
      ;(function () {
        return false
      })
        ['constructor']('debugger')
        ['call']()
    }, 50)
  }
  try {
    block()
  } catch (err) {
    console.log(err)
  }
}

export function disableContextMenu() {
  document.oncontextmenu = () => false
}

export function disableF12() {
  document.addEventListener('keydown', e => {
    if (e.keyCode === 123) {
      e.preventDefault()
      return false
    }
    if (e.ctrlKey && e.keyCode === 123) {
      e.preventDefault()
      return false
    }
    if (e.shiftKey && e.keyCode === 123) {
      e.preventDefault()
      return false
    }
    if (e.ctrlKey && e.shiftKey && e.keyCode === 123) {
      e.preventDefault()
      return false
    }
  })
}

export function disableCopy(cb?: () => void) {
  document.addEventListener('copy', function (e) {
    e.clipboardData?.setData('text/plain', '禁止复制')
    e.preventDefault()
    cb?.()
  })

  // 禁用键盘快捷键复制
  document.addEventListener('keydown', e => {
    if (e.ctrlKey && (e.keyCode === 67 || e.keyCode === 86 || e.keyCode === 88)) {
      e.preventDefault()
      cb?.()
      return false
    }
  })
}