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			104 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
		
		
			
		
	
	
			104 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
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								<template>
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									<view
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									    class="u-checkbox-group"
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									    :class="bemClass"
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									>
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										<slot></slot>
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									</view>
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								</template>
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								<script>
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									import props from './props.js';
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									/**
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									 * checkboxGroup 复选框组
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									 * @description 复选框组件一般用于需要多个选择的场景,该组件功能完整,使用方便
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									 * @tutorial https://www.uviewui.com/components/checkbox.html
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									 * @property {String}			name			标识符 
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									 * @property {Array}			value			绑定的值
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									 * @property {String}			shape			形状,circle-圆形,square-方形 (默认 'square' )
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									 * @property {Boolean}			disabled		是否禁用全部checkbox (默认 false )
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									 * @property {String}			activeColor		选中状态下的颜色,如设置此值,将会覆盖parent的activeColor值 (默认 '#2979ff' )
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									 * @property {String}			inactiveColor	未选中的颜色 (默认 '#c8c9cc' )
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									 * @property {String | Number}	size			整个组件的尺寸 单位px (默认 18 )
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									 * @property {String}			placement		布局方式,row-横向,column-纵向 (默认 'row' )
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									 * @property {String | Number}	labelSize		label的字体大小,px单位  (默认 14 )
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									 * @property {String}			labelColor		label的字体颜色 (默认 '#303133' )
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									 * @property {Boolean}			labelDisabled	是否禁止点击文本操作 (默认 false )
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									 * @property {String}			iconColor		图标颜色 (默认 '#ffffff' )
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									 * @property {String | Number}	iconSize		图标的大小,单位px (默认 12 )
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									 * @property {String}			iconPlacement	勾选图标的对齐方式,left-左边,right-右边  (默认 'left' )
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									 * @property {Boolean}			borderBottom	placement为row时,是否显示下边框 (默认 false )
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									 * @event {Function}	change	任一个checkbox状态发生变化时触发,回调为一个对象
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									 * @event {Function}	input	修改通过v-model绑定的值时触发,回调为一个对象
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									 * @example <u-checkbox-group></u-checkbox-group>
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									 */
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									export default {
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										name: 'u-checkbox-group',
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										mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
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										computed: {
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											// 这里computed的变量,都是子组件u-checkbox需要用到的,由于头条小程序的兼容性差异,子组件无法实时监听父组件参数的变化
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											// 所以需要手动通知子组件,这里返回一个parentData变量,供watch监听,在其中去通知每一个子组件重新从父组件(u-checkbox-group)
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											// 拉取父组件新的变化后的参数
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											parentData() {
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												return [this.value, this.disabled, this.inactiveColor, this.activeColor, this.size, this.labelDisabled, this.shape,
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													this.iconSize, this.borderBottom, this.placement
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												]
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											},
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											bemClass() {
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												// this.bem为一个computed变量,在mixin中
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												return this.bem('checkbox-group', ['placement'])
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											},
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										},
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										watch: {
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											// 当父组件需要子组件需要共享的参数发生了变化,手动通知子组件
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											parentData() {
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												if (this.children.length) {
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													this.children.map(child => {
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														// 判断子组件(u-checkbox)如果有init方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
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														typeof(child.init) === 'function' && child.init()
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													})
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												}
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											},
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										},
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										data() {
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											return {
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											}
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										},
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										created() {
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											this.children = []
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										},
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										methods: {
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											// 将其他的checkbox设置为未选中的状态
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											unCheckedOther(childInstance) {
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												const values = []
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												this.children.map(child => {
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													// 将被选中的checkbox,放到数组中返回
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													if (child.isChecked) {
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														values.push(child.name)
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													}
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												})
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												// 发出事件
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												this.$emit('change', values)
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												// 修改通过v-model绑定的值
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												this.$emit('input', values)
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											},
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										}
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									}
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								</script>
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								<style lang="scss" scoped>
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									@import "../../libs/css/components.scss";
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									.u-checkbox-group {
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										&--row {
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											@include flex;
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										}
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										&--column {
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											@include flex(column);
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										}
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									}
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								</style>
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