122 lines
4.3 KiB
Vue
122 lines
4.3 KiB
Vue
|
<template>
|
|||
|
|
<view class="u-dropdown-item" v-if="active" @touchmove.stop.prevent="() => {}" @tap.stop.prevent="() => {}">
|
|||
|
|
<block v-if="!$slots.default && !$slots.$default">
|
|||
|
|
<scroll-view class="u-dropdown-item__scroll" scroll-y="true" :style="{
|
|||
|
|
height: addUnit(height)
|
|||
|
|
}">
|
|||
|
|
<view class="u-dropdown-item__options">
|
|||
|
|
<up-cell-group>
|
|||
|
|
<up-cell @click="cellClick(item.value)" :arrow="false" :title="item.label" v-for="(item, index) in options"
|
|||
|
|
:key="index" :title-style="{
|
|||
|
|
color: modelValue == item.value ? activeColor : inactiveColor
|
|||
|
|
}">
|
|||
|
|
<up-icon v-if="modelValue == item.value" name="checkbox-mark" :color="activeColor" size="32"></up-icon>
|
|||
|
|
</up-cell>
|
|||
|
|
</up-cell-group>
|
|||
|
|
</view>
|
|||
|
|
</scroll-view>
|
|||
|
|
</block>
|
|||
|
|
<slot v-else />
|
|||
|
|
</view>
|
|||
|
|
</template>
|
|||
|
|
|
|||
|
|
<script>
|
|||
|
|
import props from './props';
|
|||
|
|
import mpMixin from '../../libs/mixin/mpMixin';
|
|||
|
|
import mixin from '../../libs/mixin/mixin';
|
|||
|
|
import { addUnit, $parent } from '../../libs/function/index';
|
|||
|
|
/**
|
|||
|
|
* dropdown-item 下拉菜单
|
|||
|
|
* @description 该组件一般用于向下展开菜单，同时可切换多个选项卡的场景
|
|||
|
|
* @tutorial https://ijry.github.io/uview-plus/components/dropdown.html
|
|||
|
|
* @property {String | Number} v-model 双向绑定选项卡选择值
|
|||
|
|
* @property {String} title 菜单项标题
|
|||
|
|
* @property {Array[Object]} options 选项数据，如果传入了默认slot，此参数无效
|
|||
|
|
* @property {Boolean} disabled 是否禁用此选项卡（默认false）
|
|||
|
|
* @property {String | Number} duration 选项卡展开和收起的过渡时间，单位ms（默认300）
|
|||
|
|
* @property {String | Number} height 弹窗下拉内容的高度(内容超出将会滚动)（默认auto）
|
|||
|
|
* @example <u-dropdown-item title="标题"></u-dropdown-item>
|
|||
|
|
*/
|
|||
|
|
export default {
|
|||
|
|
name: 'u-dropdown-item',
|
|||
|
|
mixins: [mpMixin, mixin, props],
|
|||
|
|
options: {
|
|||
|
|
styleIsolation: 'shared',
|
|||
|
|
},
|
|||
|
|
data() {
|
|||
|
|
return {
|
|||
|
|
active: false, // 当前项是否处于展开状态
|
|||
|
|
activeColor: '#2979ff', // 激活时左边文字和右边对勾图标的颜色
|
|||
|
|
inactiveColor: '#606266', // 未激活时左边文字和右边对勾图标的颜色
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
computed: {
|
|||
|
|
// 监听props是否发生了变化，有些值需要传递给父组件u-dropdown，无法双向绑定
|
|||
|
|
propsChange() {
|
|||
|
|
return `${this.title}-${this.disabled}`;
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
watch: {
|
|||
|
|
propsChange(n) {
|
|||
|
|
// 当值变化时，通知父组件重新初始化，让父组件执行每个子组件的init()方法
|
|||
|
|
// 将所有子组件数据重新整理一遍
|
|||
|
|
if (this.parent) this.parent.init();
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
created() {
|
|||
|
|
// 父组件的实例
|
|||
|
|
this.parent = false;
|
|||
|
|
},
|
|||
|
|
emits: ['update:modelValue', 'change'],
|
|||
|
|
methods: {
|
|||
|
|
addUnit,
|
|||
|
|
init() {
|
|||
|
|
// 获取父组件u-dropdown
|
|||
|
|
let parent = $parent.call(this, 'u-dropdown');
|
|||
|
|
if (parent) {
|
|||
|
|
this.parent = parent;
|
|||
|
|
// 将子组件的激活颜色配置为父组件设置的激活和未激活时的颜色
|
|||
|
|
this.activeColor = parent.activeColor;
|
|||
|
|
this.inactiveColor = parent.inactiveColor;
|
|||
|
|
// 将本组件的this，放入到父组件的children数组中，让父组件可以操作本(子)组件的方法和属性
|
|||
|
|
// push进去前，显判断是否已经存在了本实例，因为在子组件内部数据变化时，会通过父组件重新初始化子组件
|
|||
|
|
let exist = parent.children.find(val => {
|
|||
|
|
return this === val;
|
|||
|
|
})
|
|||
|
|
if (!exist) parent.children.push(this);
|
|||
|
|
if (parent.children.length == 1) this.active = true;
|
|||
|
|
// 父组件无法监听children的变化，故将子组件的title，传入父组件的menuList数组中
|
|||
|
|
parent.menuList.push({
|
|||
|
|
title: this.title,
|
|||
|
|
disabled: this.disabled
|
|||
|
|
});
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
// cell被点击
|
|||
|
|
cellClick(value) {
|
|||
|
|
// 修改通过v-model绑定的值
|
|||
|
|
// #ifdef VUE2
|
|||
|
|
this.$emit('input', value);
|
|||
|
|
// #endif
|
|||
|
|
// #ifdef VUE3
|
|||
|
|
this.$emit('update:modelValue', value);
|
|||
|
|
// #endif
|
|||
|
|
// 通知父组件(u-dropdown)收起菜单
|
|||
|
|
this.parent.close();
|
|||
|
|
// 发出事件，抛出当前勾选项的value
|
|||
|
|
this.$emit('change', value);
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
mounted() {
|
|||
|
|
this.init();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
</script>
|
|||
|
|
|
|||
|
|
<style scoped lang="scss">
|
|||
|
|
@import "../../libs/css/components.scss";
|
|||
|
|
.u-dropdown-item__scroll {
|
|||
|
|
background: #ffffff;
|
|||
|
|
}
|
|||
|
|
</style>
|