Yi.Vue3.X.RuoYi/src/directive/common/copyText.js

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/**
* v-copyText 复制文本内容
* Copyright (c) 2022 ruoyi
*/

export default {
  beforeMount(el, { value, arg }) {
    if (arg === "callback") {
      el.$copyCallback = value;
    } else {
      el.$copyValue = value;
      const handler = () => {
        copyTextToClipboard(el.$copyValue);
        if (el.$copyCallback) {
          el.$copyCallback(el.$copyValue);
        }
      };
      el.addEventListener("click", handler);
      el.$destroyCopy = () => el.removeEventListener("click", handler);
    }
  }
}

function copyTextToClipboard(input, { target = document.body } = {}) {
  const element = document.createElement('textarea');
  const previouslyFocusedElement = document.activeElement;

  element.value = input;

  // Prevent keyboard from showing on mobile
  element.setAttribute('readonly', '');

  element.style.contain = 'strict';
  element.style.position = 'absolute';
  element.style.left = '-9999px';
  element.style.fontSize = '12pt'; // Prevent zooming on iOS

  const selection = document.getSelection();
  const originalRange = selection.rangeCount > 0 && selection.getRangeAt(0);

  target.append(element);
  element.select();

  // Explicit selection workaround for iOS
  element.selectionStart = 0;
  element.selectionEnd = input.length;

  let isSuccess = false;
  try {
    isSuccess = document.execCommand('copy');
  } catch { }

  element.remove();

  if (originalRange) {
    selection.removeAllRanges();
    selection.addRange(originalRange);
  }

  // Get the focus back on the previously focused element, if any