u-dropdown-item.vue
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<template>
<view class="u-drawdown">
<view
class="u-dropdown__menu"
:style="{
height: $u.addUnit(height)
}"
ref="u-dropdown__menu"
>
<view
class="u-dropdown__menu__item"
v-for="(item, index) in menuList"
:key="index"
@tap.stop="clickHandler(item, index)"
>
<view class="u-dropdown__menu__item__content">
<text
class="u-dropdown__menu__item__content__text"
:style="[index === current ? activeStyle : inactiveStyle]"
>{{item.title}}</text>
<view
class="u-dropdown__menu__item__content__arrow"
:class="[index === current && 'u-dropdown__menu__item__content__arrow--rotate']"
>
<u-icon
:name="menuIcon"
:size="$u.addUnit(menuIconSize)"
></u-icon>
</view>
</view>
</view>
</view>
<view class="u-dropdown__content">
<slot />
</view>
</view>
</template>
<script>
import props from './props.js';
/**
* Dropdown
* @description
* @tutorial url
* @property {String}
* @event {Function}
* @example
*/
export default {
name: 'u-dropdown',
mixins: [uni.$u.mixin, props],
data() {
return {
// �˵�����
menuList: [],
current: 0
}
},
computed: {
},
created() {
// �������������(u-dropdown-item)��this��������data��������������������С��������ѭ�����ö�����
this.children = [];
},
methods: {
clickHandler(item, index) {
this.children.map(child => {
if(child.title === item.title) {
// this.queryRect('u-dropdown__menu').then(size => {
child.$emit('click')
child.setContentAnimate(child.show ? 0 : 300)
child.show = !child.show
// })
} else {
child.show = false
child.setContentAnimate(0)
}
})
},
// ��ȡ��ǩ�ijߴ�λ��
queryRect(el) {
// #ifndef APP-NVUE
// $uGetRectΪuView�Դ��Ľڵ��ѯ����������ĵ����ܣ�https://www.uviewui.com/js/getRect.html
// ����ڲ�һ����this.$uGetRect�������Ϊthis.$u.getRect�����߹���һ�£����Ʋ�ͬ
return new Promise(resolve => {
this.$uGetRect(`.${el}`).then(size => {
resolve(size)
})
})
// #endif
// #ifdef APP-NVUE
// nvue�£�ʹ��domģ���ѯԪ�ظ߶�
// ����һ��promise���õ��ô˷�����������ʹ��then�ص�
return new Promise(resolve => {
dom.getComponentRect(this.$refs[el], res => {
resolve(res.size)
})
})
// #endif
},
},
}
</script>
<style lang="scss">
@import '../../libs/css/components.scss';
.u-dropdown {
&__menu {
@include flex;
&__item {
flex: 1;
@include flex;
justify-content: center;
&__content {
@include flex;
align-items: center;
}
}
}
}
</style>