uv-vtabs-item.vue
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<template>
<view
class="uv-vtabs-item"
:id="`content_${index}`"
ref="uv-vtabs-item"
>
<slot />
</view>
</template>
<script>
import mpMixin from '@/uni_modules/uv-ui-tools/libs/mixin/mpMixin.js';
import mixin from '@/uni_modules/uv-ui-tools/libs/mixin/mixin.js';
// #ifdef APP-NVUE
const dom = uni.requireNativePlugin('dom');
// #endif
export default {
name: 'uv-vtabs-item',
mixins: [mpMixin, mixin],
props: {
index: {
type: [Number,String],
default: 0
}
},
data(){
return {
// 记录item的离顶部的距离
top: 0,
// 记录item的高度
height: 0
// 是否为联动
}
},
mounted() {
this.init();
},
methods: {
async init(){
this.getParentData('uv-vtabs');
if (!this.parent) {
return this.$uv.error('uv-vtabs必须要搭配uv-vtabs-item组件使用')
}
if(!this.parent.chain) return;
await this.$uv.sleep();
this.getItemRect().then(size=>{
// 由于对象的引用特性，此处会同时生效到父组件的children数组的本实例的top属性中，供父组件判断读取
this.top = size.top;
this.height = size.height;
});
},
getItemRect(){
return new Promise(resolve => {
// #ifndef APP-NVUE
this.$uvGetRect('.uv-vtabs-item').then(size => {
resolve(size)
})
// #endif
// #ifdef APP-NVUE
const ref = this.$refs['uv-vtabs-item']
dom.getComponentRect(ref, res => {
resolve(res.size)
})
// #endif
})
}
}
}
</script>