content

<template>
    <div class="tab-content">
        <TabBar v-model="activeKey">
            <TabBody label="標籤一" name="1">
                標籤一的內容
            </TabBody>
            <TabBody label="標籤二" name="2">
                標籤二的內容
            </TabBody>
            <TabBody label="標籤三" name="3">
                標籤三的內容
            
 
</TabBody>
            <TabBody label="標籤四" name="4">
                標籤四的內容
            </TabBody>
        </TabBar>
    </div>
</template>

<script>

import TabBar from '@/components/TabBar';
import TabBody from '@/components/TabBody';


export default {
    name:"tabContent",
    data() {
        
 
return{
            activeKey:'1'
        }
    },
    components:{
        TabBar,
        TabBody
    }

}
</script>

<style lang="less">
    .tab-header{
        display: flex;
        justify-content: center;
        align-items: center;
        line-height: 30px;
        .tabs-item{
            border
 
-right: 1px solid #eee;
            padding: 0 10px;
            &:last-child{
                border-right: 0;
            }
        }
    }
    .tab-content{
        padding: 10px;
    }
</style>

tabbar

<template>
    <div class="tab-bar">
        <div class="tab-header">
            <div class="tabs-item" 
                :class="tabCls(item)"
                v-for="(item,idx) in navList"
                :key="idx"
                @click="handlerChange(idx)"
            >
            {{item.label}}
            </div>

        </div>

        <div class="tab-body">
            <slot></slot>
        </div>
    </div>
</template>

<script>
export default {
    props:{
        value:{
            type:[String,Number]
        }
    },
    data(){
        return{
            currentValue:this.value,
            navList:[]
        }
    },
    methods:{
        tabCls(item){
            return [
                'tabs-tab',
                {
                    'tabs-active':item.name == this.currentValue
                }
            ]
        },
        handlerChange(idx){
            let nav = this.navList[idx];
            let name = nav.name;
            this.currentValue = name;
            this.$emit('input',name)
            this.$emit('on-click',name);
        },
        getTabs(){
            return this.$children.filter((item)=>{
                return item.$options.name == 'pane'
            })
        },
        updateNav(){
            this.navList = [];
            this.getTabs().forEach((pane,idx)=>{
                this.navList.push({
                    label:pane.label,
                    name:pane.name || idx
                })
                if(!pane.name){
                    pane.nam = idx;
                }
                if(idx == 0){
                    if(!this.currentValue){
                        this.currentValue == pane.name || idx;
                    }
                }
            })
            this.updateStatus();
        },
        updateStatus(){
            let tabs = this.getTabs();
            tabs.forEach(item=>{
                return item.show = item.name === this.currentValue;
            })
        }
    },
    watch:{
        value(val){
            this.currentValue = val;
        },
        currentValue(){
            this.updateStatus();
        }
    }
}
</script>

<style>

</style>

tab-body

<template>
    <div class="tab-content" v-show="show">
        <slot></slot>
    </div>
</template>

<script>
export default {
    name:'pane',
    props:{
        name:{
            type:String
        },
        label:{
            type:String,
            default:''
        }
    },
    data() {
        return{
            show:true
        }
    },
    methods:{
        updateNav(){
            this.$parent.updateNav();
        }
    },
    mounted(){
        this.updateNav();
    },
    watch:{
        label(){
            this.updateNav();
        }
    }
}
</script>

<style>

</style>