You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
234 lines
7.0 KiB
234 lines
7.0 KiB
9 months ago
|
<template>
|
||
|
<view class="u-tabbar-item" :style="[addStyle(customStyle)]">
|
||
|
<view v-if="isCenter" class="tabbar-center-item">
|
||
|
<image class="center-image" :src="centerImage" mode="aspectFill"></image>
|
||
|
</view>
|
||
|
<template v-else>
|
||
|
<view class="u-tabbar-item__icon">
|
||
|
<image
|
||
|
v-if="icon"
|
||
|
:name="icon"
|
||
|
:color="isActive ? parentData.activeColor : parentData.inactiveColor"
|
||
|
:size="20"
|
||
|
></image>
|
||
|
<block v-else>
|
||
|
<slot v-if="isActive" name="active-icon" />
|
||
|
<slot v-else name="inactive-icon" />
|
||
|
</block>
|
||
|
<!-- <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>
|
||
|
</template>
|
||
|
</view>
|
||
|
</template>
|
||
|
|
||
|
<script>
|
||
|
/**
|
||
|
* TabbarItem 底部导航栏子组件
|
||
|
* @description 此组件提供了自定义tabbar的能力。
|
||
|
* @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
|
||
|
*
|
||
|
*/
|
||
|
import { deepMerge, addStyle, sleep, $parent } from '@/sheep/helper';
|
||
|
export default {
|
||
|
name: 'su-tabbar-item',
|
||
|
props: {
|
||
|
customStyle: {
|
||
|
type: [Object, String],
|
||
|
default: () => ({}),
|
||
|
},
|
||
|
customClass: {
|
||
|
type: String,
|
||
|
default: '',
|
||
|
},
|
||
|
// 跳转的页面路径
|
||
|
url: {
|
||
|
type: String,
|
||
|
default: '',
|
||
|
},
|
||
|
// 页面跳转的类型
|
||
|
linkType: {
|
||
|
type: String,
|
||
|
default: 'navigateTo',
|
||
|
},
|
||
|
// item标签的名称,作为与u-tabbar的value参数匹配的标识符
|
||
|
name: {
|
||
|
type: [String, Number, null],
|
||
|
default: '',
|
||
|
},
|
||
|
// uView内置图标或者绝对路径的图片
|
||
|
icon: {
|
||
|
icon: String,
|
||
|
default: '',
|
||
|
},
|
||
|
// 右上角的角标提示信息
|
||
|
badge: {
|
||
|
type: [String, Number, null],
|
||
|
default: '',
|
||
|
},
|
||
|
// 是否显示圆点,将会覆盖badge参数
|
||
|
dot: {
|
||
|
type: Boolean,
|
||
|
default: false,
|
||
|
},
|
||
|
// 描述文本
|
||
|
text: {
|
||
|
type: String,
|
||
|
default: '',
|
||
|
},
|
||
|
// 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
|
||
|
badgeStyle: {
|
||
|
type: [Object, String],
|
||
|
default: '',
|
||
|
},
|
||
|
isCenter: {
|
||
|
type: Boolean,
|
||
|
default: false,
|
||
|
},
|
||
|
centerImage: {
|
||
|
type: String,
|
||
|
default: '',
|
||
|
},
|
||
|
},
|
||
|
data() {
|
||
|
return {
|
||
|
isActive: false, // 是否处于激活状态
|
||
|
addStyle,
|
||
|
parentData: {
|
||
|
value: null,
|
||
|
activeColor: '',
|
||
|
inactiveColor: '',
|
||
|
},
|
||
|
parent: {},
|
||
|
};
|
||
|
},
|
||
|
created() {
|
||
|
this.init();
|
||
|
},
|
||
|
methods: {
|
||
|
getParentData(parentName = '') {
|
||
|
// 避免在created中去定义parent变量
|
||
|
if (!this.parent) this.parent = {};
|
||
|
// 这里的本质原理是,通过获取父组件实例(也即类似u-radio的父组件u-radio-group的this)
|
||
|
// 将父组件this中对应的参数,赋值给本组件(u-radio的this)的parentData对象中对应的属性
|
||
|
// 之所以需要这么做,是因为所有端中,头条小程序不支持通过this.parent.xxx去监听父组件参数的变化
|
||
|
// 此处并不会自动更新子组件的数据,而是依赖父组件u-radio-group去监听data的变化,手动调用更新子组件的方法去重新获取
|
||
|
this.parent = $parent.call(this, parentName);
|
||
|
if (this.parent.children) {
|
||
|
// 如果父组件的children不存在本组件的实例,才将本实例添加到父组件的children中
|
||
|
this.parent.children.indexOf(this) === -1 && this.parent.children.push(this);
|
||
|
}
|
||
|
if (this.parent && this.parentData) {
|
||
|
// 历遍parentData中的属性,将parent中的同名属性赋值给parentData
|
||
|
Object.keys(this.parentData).map((key) => {
|
||
|
this.parentData[key] = this.parent[key];
|
||
|
});
|
||
|
}
|
||
|
},
|
||
|
init() {
|
||
|
// 支付宝小程序不支持provide/inject,所以使用这个方法获取整个父组件,在created定义,避免循环引用
|
||
|
this.updateParentData();
|
||
|
if (!this.parent) {
|
||
|
console.log('u-tabbar-item必须搭配u-tabbar组件使用');
|
||
|
}
|
||
|
// 本子组件在u-tabbar的children数组中的索引
|
||
|
const index = this.parent.children.indexOf(this);
|
||
|
// 判断本组件的name(如果没有定义name,就用index索引)是否等于父组件的value参数
|
||
|
this.isActive = (this.name.split('?')[0] || index) === this.parentData.value;
|
||
|
},
|
||
|
updateParentData() {
|
||
|
// 此方法在mixin中
|
||
|
this.getParentData('su-tabbar');
|
||
|
},
|
||
|
// 此方法将会被父组件u-tabbar调用
|
||
|
updateFromParent() {
|
||
|
// 重新初始化
|
||
|
this.init();
|
||
|
},
|
||
|
clickHandler() {
|
||
|
this.$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>
|
||
|
.tabbar-center-item {
|
||
|
height: 40px;
|
||
|
width: 40px;
|
||
|
display: flex;
|
||
|
align-items: center;
|
||
|
justify-content: center;
|
||
|
border-radius: 50%;
|
||
|
background-color: rebeccapurple;
|
||
|
transform: scale(1.3) translateY(-6px);
|
||
|
position: absolute;
|
||
|
z-index: 2;
|
||
|
|
||
|
.center-image {
|
||
|
width: 25px;
|
||
|
height: 25px;
|
||
|
}
|
||
|
}
|
||
|
.u-tabbar-item {
|
||
|
display: flex;
|
||
|
flex-direction: column;
|
||
|
align-items: center;
|
||
|
justify-content: center;
|
||
|
flex: 1;
|
||
|
position: relative;
|
||
|
z-index: 1;
|
||
|
|
||
|
&__icon {
|
||
|
display: flex;
|
||
|
position: relative;
|
||
|
width: 150rpx;
|
||
|
justify-content: center;
|
||
|
}
|
||
|
|
||
|
&__text {
|
||
|
margin-top: 2px;
|
||
|
font-size: 12px;
|
||
|
color: var(--textSize);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* #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>
|