mirror of
https://gitee.com/huangge1199_admin/vue-pro.git
synced 2024-11-24 08:11:55 +08:00
143 lines
3.9 KiB
Vue
143 lines
3.9 KiB
Vue
<template>
|
||
<view
|
||
class="u-tabbar-item"
|
||
:style="[$u.addStyle(customStyle)]"
|
||
@tap="clickHandler"
|
||
>
|
||
<view class="u-tabbar-item__icon">
|
||
<u-icon
|
||
v-if="icon"
|
||
:name="icon"
|
||
:color="isActive? parentData.activeColor : parentData.inactiveColor"
|
||
:size="20"
|
||
></u-icon>
|
||
<template v-else>
|
||
<slot
|
||
v-if="isActive"
|
||
name="active-icon"
|
||
/>
|
||
<slot
|
||
v-else
|
||
name="inactive-icon"
|
||
/>
|
||
</template>
|
||
<u-badge
|
||
absolute
|
||
:offset="[0, dot ? '34rpx' : badge > 9 ? '14rpx' : '20rpx']"
|
||
:customStyle="badgeStyle"
|
||
:isDot="dot"
|
||
:value="badge || (dot ? 1 : null)"
|
||
:show="dot || badge > 0"
|
||
></u-badge>
|
||
</view>
|
||
|
||
<slot name="text">
|
||
<text
|
||
class="u-tabbar-item__text"
|
||
:style="{
|
||
color: isActive? parentData.activeColor : parentData.inactiveColor
|
||
}"
|
||
>{{ text }}</text>
|
||
</slot>
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
import props from './props.js';
|
||
/**
|
||
* TabbarItem 底部导航栏子组件
|
||
* @description 此组件提供了自定义tabbar的能力。
|
||
* @tutorial https://www.uviewui.com/components/tabbar.html
|
||
* @property {String | Number} name item标签的名称，作为与u-tabbar的value参数匹配的标识符
|
||
* @property {String} icon uView内置图标或者绝对路径的图片
|
||
* @property {String | Number} badge 右上角的角标提示信息
|
||
* @property {Boolean} dot 是否显示圆点，将会覆盖badge参数（默认 false ）
|
||
* @property {String} text 描述文本
|
||
* @property {Object | String} badgeStyle 控制徽标的位置，对象或者字符串形式，可以设置top和right属性（默认 'top: 6px;right:2px;' ）
|
||
* @property {Object} customStyle 定义需要用到的外部样式
|
||
*
|
||
* @example <u-tabbar :value="value2" :placeholder="false" @change="name => value2 = name" :fixed="false" :safeAreaInsetBottom="false"><u-tabbar-item text="首页" icon="home" dot ></u-tabbar-item></u-tabbar>
|
||
*/
|
||
export default {
|
||
name: 'u-tabbar-item',
|
||
mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
|
||
data() {
|
||
return {
|
||
isActive: false, // 是否处于激活状态
|
||
parentData: {
|
||
value: null,
|
||
activeColor: '',
|
||
inactiveColor: ''
|
||
}
|
||
}
|
||
},
|
||
created() {
|
||
this.init()
|
||
},
|
||
methods: {
|
||
init() {
|
||
// 支付宝小程序不支持provide/inject，所以使用这个方法获取整个父组件，在created定义，避免循环引用
|
||
this.updateParentData()
|
||
if (!this.parent) {
|
||
uni.$u.error('u-tabbar-item必须搭配u-tabbar组件使用')
|
||
}
|
||
// 本子组件在u-tabbar的children数组中的索引
|
||
const index = this.parent.children.indexOf(this)
|
||
// 判断本组件的name(如果没有定义name，就用index索引)是否等于父组件的value参数
|
||
this.isActive = (this.name || index) === this.parentData.value
|
||
},
|
||
updateParentData() {
|
||
// 此方法在mixin中
|
||
this.getParentData('u-tabbar')
|
||
},
|
||
// 此方法将会被父组件u-tabbar调用
|
||
updateFromParent() {
|
||
// 重新初始化
|
||
this.init()
|
||
},
|
||
clickHandler() {
|
||
this.$nextTick(() => {
|
||
const index = this.parent.children.indexOf(this)
|
||
const name = this.name || index
|
||
// 点击的item为非激活的item才发出change事件
|
||
if (name !== this.parent.value) {
|
||
this.parent.$emit('change', name)
|
||
}
|
||
this.$emit('click', name)
|
||
})
|
||
}
|
||
},
|
||
}
|
||
</script>
|
||
|
||
<style lang="scss" scoped>
|
||
@import "../../libs/css/components.scss";
|
||
|
||
.u-tabbar-item {
|
||
@include flex(column);
|
||
align-items: center;
|
||
justify-content: center;
|
||
flex: 1;
|
||
|
||
&__icon {
|
||
@include flex;
|
||
position: relative;
|
||
width: 150rpx;
|
||
justify-content: center;
|
||
}
|
||
|
||
&__text {
|
||
margin-top: 2px;
|
||
font-size: 12px;
|
||
color: $u-content-color;
|
||
}
|
||
}
|
||
|
||
/* #ifdef MP */
|
||
// 由于小程序都使用shadow DOM形式实现，需要给影子宿主设置flex: 1才能让其撑开
|
||
:host {
|
||
flex: 1
|
||
}
|
||
/* #endif */
|
||
</style>
|