一个标签功能 , 我想实现这个标签可以拖拽功能 需要加什么呀 下面贴下全代码
<template>
<div>
<div class="tags">
<!-- 左箭头 -->
<div
class="arrow arrow_left"
v-show="arrowVisible"
@click="handleClickToLeft"
>
<i class="el-icon-arrow-left"></i>
</div>
<!-- 标签内容 -->
<div class="tags_content" ref="box">
<span ref="tags">
<el-tag
v-for="(tag, index) in tags"
:key="tag.name + index"
:class="[active == index ? 'active top_tags' : 'top_tags']"
effect="dark"
:closable="tag.name != 'Dashboard'"
@close="handleClose(index, tag)"
@click="clickTag(index, tag)"
@contextmenu.native.prevent="handleClickContextMenu(index, tag)"
>
{{ tag.title || '首页' }}
</el-tag>
</span>
</div>
<!-- 右箭头 -->
<div
class="arrow arrow_right"
v-show="arrowVisible"
@click="handleClickToRight"
>
<i class="el-icon-arrow-right"></i>
</div>
</div>
<!-- 右键菜单 -->
<ul
v-show="contextMenu.isShow"
:style="{ left: contextMenu.menuLeft, top: '96px' }"
class="el-dropdown-menu el-popper"
x-placement="bottom-end"
>
<li
v-if="this.active == this.contextMenu.index"
class="el-dropdown-menu__item"
@click="refresh"
>
刷新
</li>
<li class="el-dropdown-menu__item" @click="closeRightTag">
关闭右侧
</li>
<li class="el-dropdown-menu__item" @click="closeOtherTag">
关闭其它
</li>
<div x-arrow="" class="popper__arrow" style="left: 44px;"></div>
</ul>
</div>
</template>
<script>
import Sortable from 'sortablejs';
import tags from 'element-resize-detector';
export default {
data() {
return {
// 是否有箭头
arrowVisible: true,
// 点击次数
num: 0,
active: 0,
tags: [
{name: 'AgencyConfig', path: '/AgencyConfig', title: '代理配置' } ,// 上面25行用title
],
// 右键的元素
contextMenu: {
index: 0,
tag: {},
menuLeft: 0,
isShow: false
}
};
},
watch: {
$route() {
this.getThisPage();
},
tags() {
this.listenFun(this.$refs.tags, "tags");
}
},
mounted() {
this.listenFun(this.$refs.box, "box");
var that = this;
document.addEventListener("click", function(e) {
that.contextMenu.isShow = false;
});
},
methods: {
// 监听可视区域宽,浏览器窗口大小改变执行
listenFun(monitor, dom) {
let boxWidth = this.$refs.box.offsetWidth,
tagsWidth = this.$refs.tags.offsetWidth,
erd = tags();
erd.listenTo(monitor, ele => {
this.$nextTick(() => {
if (this.$refs.box && this.$refs.box.style) {
if ((dom == "box" && ele.offsetWidth >= tagsWidth) || (dom == "tags" && ele.offsetWidth <= boxWidth)) {
this.arrowVisible = false;
this.$refs.box.style.paddingLeft = "1px";
this.$refs.box.style.paddingRight = "16px";
this.$refs.box.style.transform = "TranslateX(0px)";
this.num = 0;
} else {
this.arrowVisible = true;
this.$refs.box.style.paddingLeft = "56px";
this.$refs.box.style.paddingRight = "56px";
}
}
});
});
},
// 判断当前页
getThisPage() {
let currentPgae = this.$route;
console.log('`````````',currentPgae)
// 判断tags里是否有当前页面
var index = this.tags.findIndex(tag => tag.name == currentPgae.name);
if (index === -1) {
this.tags.push({
name: currentPgae.name,
path: currentPgae.path,
title: currentPgae.meta.title
});
}
// 当前选择页
this.active = this.tags.findIndex(tag => tag.name == currentPgae.name);
},
// 关闭标签
handleClose(index, tag) {
this.tags.splice(this.tags.indexOf(tag), 1);
if (index - 1 === 0) {
this.$router.push('/dashboard');
} else if (index == this.tags.length) {
this.active = index - 1;
this.$router.push(this.tags[index - 1].path);
} else {
this.$router.push(this.tags[index].path);
}
},
// 点击标签
clickTag(index, tag) {
this.active = index;
if (this.active === 0) {
this.$router.push('/dashboard')
} else {
this.$router.push(tag.path);
}
},
// 左侧按钮
handleClickToLeft() {
if (this.num > 0) {
this.num--;
this.$refs.box.style.transform = `TranslateX(-${this.num * 200}px)`;
}
},
// 右侧按钮
handleClickToRight() {
// 最后一个标签右测距离浏览器左侧距离
let lastChild = document
.querySelectorAll(".top_tags")
[this.tags.length - 1].getBoundingClientRect().right;
// 可视窗口的宽
let bodyWidth = document.body.offsetWidth;
// 右侧箭头48+右侧边距16
if (bodyWidth - lastChild <= 64) {
this.num++;
this.$refs.box.style.transform = `TranslateX(-${this.num * 200}px)`;
}
},
// 右键
handleClickContextMenu(index, tag) {
this.contextMenu.isShow = true;
this.contextMenu.index = index;
this.contextMenu.tag = tag;
let isTag = document
.querySelectorAll(".top_tags")
[index].getBoundingClientRect();
this.contextMenu.menuLeft = isTag.left - 48 + isTag.width / 2 + "px";
},
// 刷新
refresh() {
this.$router.go(0);
},
// 关闭其他
closeOtherTag() {
let tagsLin = this.tags.length,
{ index, tag, menuLeft } = this.contextMenu;
if (index !== 0) {
this.tags = [
{
path: "/dashboard",
name: "Dashboard"
},
{
name: tag.name,
path: tag.path,
title: tag.title
}
];
} else {
this.tags = [
{
path: "/dashboard",
name: "Dashboard"
}
];
}
this.active = index;
if (this.active === 0) {
this.$router.push('/dashboard');
} else {
this.$router.push(tag.path);
}
},
// 关闭右侧
closeRightTag() {
let tagsLin = this.tags.length,
{ index, tag, menuLeft } = this.contextMenu;
this.tags.splice(index + 1, tagsLin - index);
this.active = index;
if (this.active === 0) {
this.$router.push('/dashboard');
} else {
this.$router.push(tag.path);
}
}
},
created() {
// 监听页面刷新
window.addEventListener("beforeunload", e => {
localStorage.setItem(
"tagInfo",
JSON.stringify({
active: this.active,
tags: this.tags
})
);
});
let tagInfo = localStorage.getItem("tagInfo")
? JSON.parse(localStorage.getItem("tagInfo"))
: {
active: 0,
tags: [
{
path: "/dashboard",
name: "Dashboard"
}
]
};
this.active = tagInfo.active;
this.tags = tagInfo.tags;
}
};
</script>
<style lang="scss" scoped>
::v-deep.el-tag--dark {
border-color: transparent;
}
::v-deep.el-tag--dark .el-tag__close {
color: #6b6b6b; //叉叉本身的颜色
font-size: 16px;
}
::v-deep.el-tag--dark .el-tag__close:hover {
background: #5f5f5f; // 鼠标放到 叉掉标签 显示的颜色
}
.tags {
position: relative;
overflow: hidden;
.arrow {
width: 30px;
text-align: center;
cursor: pointer;
background: #ffffff; // 箭头颜色
position: absolute;
z-index: 1;
&_left {
left: 0;
top: 0;
}
&_right {
right: 0;
top: 0;
}
}
&_content {
transition: 0.3s;
white-space: nowrap;
//padding: 0 16px;
}
.top_tags {
margin-right: 8px; // 右边距
cursor: pointer;
background: #9793aa; // 其他标签颜色
font-size: 13px; // 字体大小
font-weight: 500; // 字体粗细
color: #ffffff; // 文字颜色
}
.top_tags:hover,
.active,
.arrow:hover {
background: #7f6b5f; // 点击页面颜色
}
}
</style>
