vue+el-dialog页面引用可拖拽弹窗组件
子页面:自定义指令拖拽v-el-drag-dialogdirectives: { elDragDialog }<el-dialog :visible.sync="modalShow" :before-close="modalClose" v-el-drag-dialog>内容内容内容</el-dialog>import elDragDialog from "...
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子页面:
自定义指令拖拽
v-el-drag-dialog
directives: { elDragDialog }
khDetail.vue
<el-dialog :visible.sync="modalShow" :before-close="modalClose" v-el-drag-dialog>
内容内容内容
</el-dialog>
import elDragDialog from "@/assets/js/el-drag-dialog";
<script>
export default {
data() {
return {
modalShow: false
};
},
directives: { elDragDialog },
methods: {
init() {
this.modalShow = true;
},
modalClose() {
this.modalShow = false;
}
}
};
</script>
父页面:
(Detail为组件)
<Detail ref="Detail"></Detail>
<script>
import Detail from "@/components/control/kh/khDetail.vue";
export default {
data() {
return {
isShow: false,
};
},
components: {
Detail
},
methods: {
/* --------------表格--------------- */
// 查看表格详情
handleDetail(index, row) {
console.log(index, row);
this.isShow=true,
this.$nextTick(()=>{
this.$refs.Detail.init();
})
},
}
};
</script>
封装的拖拽代码
drag.js
export default {
bind(el, binding, vnode) {
const dialogHeaderEl = el.querySelector('.el-dialog__header')
const dragDom = el.querySelector('.el-dialog')
dialogHeaderEl.style.cssText += ';cursor:move;'
dragDom.style.cssText += ';top:0px;'
// 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
const getStyle = (function() {
if (window.document.currentStyle) {
return (dom, attr) => dom.currentStyle[attr]
} else {
return (dom, attr) => getComputedStyle(dom, false)[attr]
}
})()
dialogHeaderEl.onmousedown = (e) => {
// 鼠标按下,计算当前元素距离可视区的距离
const disX = e.clientX - dialogHeaderEl.offsetLeft
const disY = e.clientY - dialogHeaderEl.offsetTop
const dragDomWidth = dragDom.offsetWidth
const dragDomHeight = dragDom.offsetHeight
const screenWidth = document.body.clientWidth
const screenHeight = document.body.clientHeight
const minDragDomLeft = dragDom.offsetLeft
const maxDragDomLeft = screenWidth - dragDom.offsetLeft - dragDomWidth
const minDragDomTop = dragDom.offsetTop
const maxDragDomTop = screenHeight - dragDom.offsetTop - dragDomHeight
// 获取到的值带px 正则匹配替换
let styL = getStyle(dragDom, 'left')
let styT = getStyle(dragDom, 'top')
if (styL.includes('%')) {
styL = +document.body.clientWidth * (+styL.replace(/\%/g, '') / 100)
styT = +document.body.clientHeight * (+styT.replace(/\%/g, '') / 100)
} else {
styL = +styL.replace(/\px/g, '')
styT = +styT.replace(/\px/g, '')
}
document.onmousemove = function(e) {
// 通过事件委托,计算移动的距离
let left = e.clientX - disX
let top = e.clientY - disY
// 边界处理
if (-(left) > minDragDomLeft) {
left = -minDragDomLeft
} else if (left > maxDragDomLeft) {
left = maxDragDomLeft
}
if (-(top) > minDragDomTop) {
top = -minDragDomTop
} else if (top > maxDragDomTop) {
top = maxDragDomTop
}
// 移动当前元素
dragDom.style.cssText += `;left:${left + styL}px;top:${top + styT}px;`
// emit onDrag event
vnode.child.$emit('dragDialog')
}
document.onmouseup = function(e) {
document.onmousemove = null
document.onmouseup = null
}
}
}
}
index.js
import drag from './drag'
const install = function(Vue) {
Vue.directive('el-drag-dialog', drag)
}
if (window.Vue) {
window['el-drag-dialog'] = drag
Vue.use(install); // eslint-disable-line
}
drag.install = install
export default drag
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