注意：使用当前组件时，请先了解组件代码逻辑
下方组件根据自己的需求来更改响应的元素id，调整代码实现逻辑，这里不过多解释

import Vue from "vue";

/**
 * 拖拽
 */
Vue.directive("Drag", (el) => {
  const moveEl = el;
  let flag = false;
  const mouseDown = (e) => {
    flag = true;
    let X = e.clientX - el.offsetLeft
    let Y = e.clientY - el.offsetTop
    const move = (e) => {
      if (flag) {
        el.style.cursor = 'move';
        el.style.marginLeft = '0px';
        el.style.marginTop = '0px';
        el.style.left = e.pageX - X + 'px';
        el.style.top = e.pageY - Y + 'px';
      }
    }
    document.addEventListener('mousemove', move);
    document.addEventListener('mouseup', (e) => {
      document.removeEventListener('mousemove', move);
    });
  }
  moveEl.addEventListener('mousedown', mouseDown);
})

/**
 * 复制
 */
Vue.directive("Copy", (el) => {
  const moveEl = el;
  let copy = false;
  const mouseDown = (e) => {
    let X = e.clientX - el.offsetLeft
    let Y = e.clientY - el.offsetTop
    const move = (e) => {
      if (!copy) {
        const imageDiv = document.createElement(el.tagName);
        imageDiv.className = "image";
        imageDiv.style.left = e.pageX - X + 'px';
        imageDiv.style.top = e.pageY - Y + 'px';
        // 获取元素属性
        el.getAttributeNames().forEach((name) => {
          imageDiv.setAttribute(name, el.getAttribute(name));
        });
        // 获取元素中内容
        imageDiv.innerHTML = el.innerHTML;
        imageDiv.addEventListener('click', (e) => {
          openIframeWindow(e)
        })
        // 已复制元素添加拖拽功能
        imageDiv.attributes.setNamedItem(document.createAttribute('v-drag'));
        imageDiv.attributes.setNamedItem(document.createAttribute('v-copy'));
        setImagesInterval(imageDiv);
        // 添加复制后元素的拖拽功能
        imagesDrag(imageDiv);
        document.getElementsByClassName('content')[0].appendChild(imageDiv);
      }
      copy = true;
    }
    document.addEventListener('mousemove', move);
    document.addEventListener('mouseup', (e) => {
      copy = false;
      document.removeEventListener('mousemove', move);
    });
  }
  moveEl.addEventListener('mousedown', mouseDown);

  // 打开iframe窗口
  function openIframeWindow(e) {
    document.getElementById('iframe').style.display = 'block';// 显示iframe的div标签
    document.getElementById('my-iframe').style.display = 'block';// 显示iframe标签
    document.getElementById('my-iframe').src = './iframe';// 显示iframe标签的src属性
    document.getElementById('my-iframe').style.width = '19.9rem';// 显示iframe标签的宽
    document.getElementById('my-iframe').style.height = '20rem';// 显示iframe标签的高
    document.getElementById('iframe').style.width = '19.9rem';// 显示iframe的div标签的宽
    document.getElementById('iframe').style.left = e.pageX + 5 + 'px';// 显示iframe的div标签的left属性
    document.getElementById('iframe').style.top = e.pageY + 5 + 'px';// 显示iframe的div标签的top属性
    // document.getElementsByClassName('open')[0].style.display = 'block';// 显示打开按钮
    // document.getElementsByClassName('close')[0].style.display = 'block';// 显示关闭按钮
    // document.getElementById('title').style.display = 'block';// 显示标题编辑文本框
    document.getElementById('closeButton').style.left = '0rem';// 设置关闭按钮的left属性
    document.getElementById('iframe0').style.display = 'block';// 显示iframe0的div通信按钮
    document.getElementById('iframe1').style.display = 'none';// 显示iframe1的div通信按钮
  }

  // 复制后的图片轮播
  function setImagesInterval(imageDiv) {
    let count = 0;
    setInterval(() => {
      if (count == 0) {
        imageDiv.getElementsByTagName('img')[0].style.display = 'block';
        imageDiv.getElementsByTagName('img')[1].style.display = 'none';
        imageDiv.getElementsByTagName('img')[2].style.display = 'none';
        count++;
      } else if (count == 1) {
        imageDiv.getElementsByTagName('img')[0].style.display = 'none';
        imageDiv.getElementsByTagName('img')[1].style.display = 'block';
        imageDiv.getElementsByTagName('img')[2].style.display = 'none';
        count++;
      } else if (count == 2) {
        imageDiv.getElementsByTagName('img')[0].style.display = 'none';
        imageDiv.getElementsByTagName('img')[1].style.display = 'none';
        imageDiv.getElementsByTagName('img')[2].style.display = 'block';
        count = 0;
      }

    }, 1000);
  }

  // 复制后的图片拖拽
  function imagesDrag(imageDiv){
    let flag = false;
    const mouseDown = (e) => {
      flag = true;
      let X = e.clientX - imageDiv.offsetLeft
      let Y = e.clientY - imageDiv.offsetTop
      const move = (e) => {
        if (flag) {
          imageDiv.style.cursor = 'move';
          imageDiv.style.marginLeft = '0px';
          imageDiv.style.marginTop = '0px';
          imageDiv.style.left = e.pageX - X + 'px';
          imageDiv.style.top = e.pageY - Y + 'px';
        }
      }
      imageDiv.addEventListener('mousemove', move)
      imageDiv.addEventListener('mouseup', (e) => {
        flag = false;
        imageDiv.removeEventListener('mousemove', move)
      })
    }
    imageDiv.addEventListener('mousedown', mouseDown);
  }
})

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