基于ant-design的a-modal自定义vue拖拽指令

写一个dragDialog.js
在main.js中引入
import ‘./core/directives/dragDialog.js’

// 让 dialog 支持鼠标拖动
import Vue from 'vue'Vue.directive('DragDialog', {update: function (el, binding, vnode) {if (!binding.value || !binding.value.reset) returnconst dialog = el.querySelector('.ant-modal')if (el.hasAttribute('margin-top') && el.style.display && el.style.display === 'none') {dialog.style.margin = nulldialog.style.marginTop = el.getAttribute('margin-top')dialog.style.left = nulldialog.style.top = null}},inserted: function (el, binding, vnode) {const header = el.querySelector('.ant-modal-header')const dialog = el.querySelector('.ant-modal')const body = document.bodylet status = 0let offsetLeftlet offsetTopif (header) {el.setAttribute('margin-top', dialog.style.marginTop)header.classList.add('v-drag-header')header.onmousedown = e => {if (e.target.className.indexOf('v-drag-header') !== -1 || e.target.parentElement.className.indexOf('v-drag-header') !== -1) {status = 1offsetLeft = e.pageX - dialog.offsetLeftoffsetTop = e.pageY - dialog.offsetTopdialog.classList.add('v-drag-dialog')if (!dialog.style.left) {dialog.style.margin = 'initial'dialog.style.top = (e.pageY - offsetTop) + 'px'dialog.style.left = (global.innerWidth - dialog.offsetWidth) / 2 + 'px'}}}header.onmousemove = e => {if (status) {let left = (e.pageX - offsetLeft)let top = (e.pageY - offsetTop)if (binding.value && binding.value.range && binding.value.range === 'body') {if (top + dialog.offsetHeight > global.innerHeight) top = global.innerHeight - dialog.offsetHeightif (left + dialog.offsetWidth > global.innerWidth) left = global.innerWidth - dialog.offsetWidthif (top < 0) top = 0if (left < 0) left = 0}dialog.style.top = top + 'px'dialog.style.left = left + 'px'}}body.onmouseup = e => {if (status) {status = 0dialog.classList.remove('v-drag-dialog')}}}}
})

注意 如果自定义modal销毁了内部 指令可能不可使用