154 lines
4.4 KiB
Vue
154 lines
4.4 KiB
Vue
|
<template>
|
|||
|
|
<view
|
|||
|
|
class="u-tabbar-item cursor-pointer"
|
|||
|
|
:style="[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';
|
|||
|
|
import mpMixin from '../../libs/mixin/mpMixin';
|
|||
|
|
import mixin from '../../libs/mixin/mixin';
|
|||
|
|
import { addStyle, error } from '../../libs/function/index';
|
|||
|
|
/**
|
|||
|
|
* 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://ijry.github.io/uview-plus/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: [mpMixin, mixin, props],
|
|||
|
|
data() {
|
|||
|
|
return {
|
|||
|
|
isActive: false, // 是否处于激活状态
|
|||
|
|
parentData: {
|
|||
|
|
value: null,
|
|||
|
|
activeColor: '',
|
|||
|
|
inactiveColor: ''
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
// 微信小程序中 options 选项
|
|||
|
|
options: {
|
|||
|
|
virtualHost: true //将自定义节点设置成虚拟的，更加接近Vue组件的表现。我们不希望自定义组件的这个节点本身可以设置样式、响应 flex 布局等
|
|||
|
|
},
|
|||
|
|
created() {
|
|||
|
|
this.init()
|
|||
|
|
},
|
|||
|
|
emits: ["click", "change"],
|
|||
|
|
methods: {
|
|||
|
|
addStyle,
|
|||
|
|
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) {
|
|||
|
|
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;
|
|||
|
|
width: 100%;
|
|||
|
|
height: 100%;
|
|||
|
|
|
|||
|
|
&__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;
|
|||
|
|
width: 100%;
|
|||
|
|
}
|
|||
|
|
/* #endif */
|
|||
|
|
</style>
|