mirror of
https://gitee.com/huangge1199_admin/vue-pro.git
synced 2024-11-30 19:21:53 +08:00
141 lines
3.8 KiB
Vue
141 lines
3.8 KiB
Vue
<template>
|
||
<view class="u-tabbar">
|
||
<view
|
||
class="u-tabbar__content"
|
||
ref="u-tabbar__content"
|
||
@touchmove.stop.prevent="noop"
|
||
:class="[border && 'u-border-top', fixed && 'u-tabbar--fixed']"
|
||
:style="[tabbarStyle]"
|
||
>
|
||
<view class="u-tabbar__content__item-wrapper">
|
||
<slot />
|
||
</view>
|
||
<u-safe-bottom v-if="safeAreaInsetBottom"></u-safe-bottom>
|
||
</view>
|
||
<view
|
||
class="u-tabbar__placeholder"
|
||
v-if="placeholder"
|
||
:style="{
|
||
height: placeholderHeight + 'px',
|
||
}"
|
||
></view>
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
import props from './props.js';
|
||
// #ifdef APP-NVUE
|
||
const dom = uni.requireNativePlugin('dom')
|
||
// #endif
|
||
/**
|
||
* Tabbar 底部导航栏
|
||
* @description 此组件提供了自定义tabbar的能力。
|
||
* @tutorial https://www.uviewui.com/components/tabbar.html
|
||
* @property {String | Number} value 当前匹配项的name
|
||
* @property {Boolean} safeAreaInsetBottom 是否为iPhoneX留出底部安全距离（默认 true ）
|
||
* @property {Boolean} border 是否显示上方边框（默认 true ）
|
||
* @property {String | Number} zIndex 元素层级z-index（默认 1 ）
|
||
* @property {String} activeColor 选中标签的颜色（默认 '#1989fa' ）
|
||
* @property {String} inactiveColor 未选中标签的颜色（默认 '#7d7e80' ）
|
||
* @property {Boolean} fixed 是否固定在底部（默认 true ）
|
||
* @property {Boolean} placeholder fixed定位固定在底部时，是否生成一个等高元素防止塌陷（默认 true ）
|
||
* @property {Object} customStyle 定义需要用到的外部样式
|
||
*
|
||
* @example <u-tabbar :value="value2" :placeholder="false" @change="name => value2 = name" :fixed="false" :safeAreaInsetBottom="false"><u-tabbar-item text="首页" icon="home" dot ></u-tabbar-item></u-tabbar>
|
||
*/
|
||
export default {
|
||
name: 'u-tabbar',
|
||
mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
|
||
data() {
|
||
return {
|
||
placeholderHeight: 0
|
||
}
|
||
},
|
||
computed: {
|
||
tabbarStyle() {
|
||
const style = {
|
||
zIndex: this.zIndex
|
||
}
|
||
// 合并来自父组件的customStyle样式
|
||
return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
|
||
},
|
||
// 监听多个参数的变化，通过在computed执行对应的操作
|
||
updateChild() {
|
||
return [this.value, this.activeColor, this.inactiveColor]
|
||
},
|
||
updatePlaceholder() {
|
||
return [this.fixed, this.placeholder]
|
||
}
|
||
},
|
||
watch: {
|
||
updateChild() {
|
||
// 如果updateChildren中的元素发生了变化，则执行子元素初始化操作
|
||
this.updateChildren()
|
||
},
|
||
updatePlaceholder() {
|
||
// 如果fixed，placeholder等参数发生变化，重新计算占位元素的高度
|
||
this.setPlaceholderHeight()
|
||
}
|
||
},
|
||
created() {
|
||
this.children = []
|
||
},
|
||
mounted() {
|
||
this.setPlaceholderHeight()
|
||
},
|
||
methods: {
|
||
updateChildren() {
|
||
// 如果存在子元素，则执行子元素的updateFromParent进行更新数据
|
||
this.children.length && this.children.map(child => child.updateFromParent())
|
||
},
|
||
// 设置用于防止塌陷元素的高度
|
||
async setPlaceholderHeight() {
|
||
if (!this.fixed || !this.placeholder) return
|
||
// 延时一定时间
|
||
await uni.$u.sleep(20)
|
||
// #ifndef APP-NVUE
|
||
this.$uGetRect('.u-tabbar__content').then(size => {
|
||
this.placeholderHeight = 50
|
||
})
|
||
// #endif
|
||
|
||
// #ifdef APP-NVUE
|
||
dom.getComponentRect(this.$refs['u-tabbar__content'], (res) => {
|
||
const {
|
||
size
|
||
} = res
|
||
this.placeholderHeight = size.height
|
||
})
|
||
// #endif
|
||
}
|
||
}
|
||
}
|
||
</script>
|
||
|
||
<style lang="scss" scoped>
|
||
@import "../../libs/css/components.scss";
|
||
|
||
.u-tabbar {
|
||
@include flex(column);
|
||
flex: 1;
|
||
justify-content: center;
|
||
|
||
&__content {
|
||
@include flex(column);
|
||
background-color: #fff;
|
||
|
||
&__item-wrapper {
|
||
height: 50px;
|
||
@include flex(row);
|
||
}
|
||
}
|
||
|
||
&--fixed {
|
||
position: fixed;
|
||
bottom: 0;
|
||
left: 0;
|
||
right: 0;
|
||
}
|
||
}
|
||
</style>
|