whychdw
2020-08-29 02d848bf39005e83882a87f8bc322d8499b92fbc
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<template>
    <flex-layout class="page-home">
        <page-header slot="header" :class="{'show-drawer': drawer}"></page-header>
        <div class="page-home-content" :class="{'show-drawer': drawer}">
            <div class="tab-menu-left" @click="drawer=true">
                <i class="el-icon-s-operation"></i>
            </div>
            <el-tabs v-model="acTabs" type="border-card"
            @tab-remove="removeTab" 
            class="no-selected full-height add-m-menu flex-layout">
                <el-tab-pane v-for="item in tabs" :key="item.name" 
                :label="item.label" :name="item.name" :closable="item.closable">
                    <iframe :name="item.name" :src="item.src" width="100%" height="100%" frameborder="0" scrolling="no"></iframe>
                </el-tab-pane>
            </el-tabs>
        </div>
        <el-drawer
        title="我是标题"
        :withHeader="false"
        :visible.sync="drawer"
        size="360px"
        direction="ltr">
            <page-menu 
            :ac-tabs="acTabs"
            @select="changeTab"></page-menu>
        </el-drawer>
    </flex-layout>
</template>
 
<script>
import PageHeader from '../components/PageHeader.vue'
import PageMenu from '../components/PageMenu.vue'
 
export default {
    components: {
        PageHeader,
        PageMenu
    },
    data() {
        return {
            acTabs: 'index',
            tabs: [
                {
                    label: '首页',
                    name: 'index',
                    src: '#/index',
                    closable: false,
                },
            ],
            drawer: false,
        }
    },
    watch: {
        acTabs: {
            handler(name) {  // 监测tab激活的位置
                // 存储激活的sessionStorage
                sessionStorage.setItem('acTabs', name);
            },
            immediate: true,
        }
    },
    methods: {
        removeTab(targetName) {
            let tabs = this.tabs;
            let activeName = this.acTabs;
 
            if (activeName === targetName) {
                tabs.forEach((tab, index) => {
                    if (tab.name === targetName) {
                        let nextTab = tabs[index + 1] || tabs[index - 1];
                        if (nextTab) {
                            activeName = nextTab.name;
                        }
                    }
                });
            }
 
            this.acTabs = activeName;
            this.tabs = tabs.filter(tab => tab.name !== targetName);
        },
        changeTab(menu) {
            let tabs = this.tabs;
            // 检测name是否已经存在tabs内
            let notIn = true;
            tabs.forEach(item=>{
                if(item.name == menu.name) {
                    notIn = false;
                }
            });
            // 不在, 添加menu到tabs中
            if(notIn) {
                tabs.push(menu);
            }
 
            // 设置激活的导航
            this.acTabs = menu.name;
        },
        // 处理从子iframe中获取到的指令
        handleMessage(msg) {
            switch(msg.cmd) {
                // 同步页面的指令
                case 'syncPage':
                    this.syncPage(msg.params);
                break;
            }
        },
        syncPage(params) {
            let tabs = this.tabs;
            let menu = params.pageInfo;
            // 检测name是否已经存在tabs内
            let notIn = true;
            tabs.forEach(item=>{
                if(item.name == menu.name) {
                    notIn = false;
                }
            });
            // 不在, 添加menu到tabs中
            if(notIn) {
                tabs.push(menu);
            }
 
            // 设置激活的导航
            this.acTabs = menu.name;
        }
    },
    mounted() {
        window.addEventListener('message', (msg)=>{
            // 处理数据
            this.handleMessage(msg.data);
        });
    }
}
</script>
 
<style scoped lang="less">
.flex-layout {
    display: flex;
    height: 100%;
    box-sizing: border-box;
}
.page-home-content {
    position: relative;
    height: 100%;
}
.el-science-blue .tab-menu-left {
    position: absolute;
    box-sizing: border-box;
    width: 48px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    z-index: 1;
}
.no-selected {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.show-drawer {
    transform: translateX(360px);
}
</style>