329 lines
9.1 KiB
Vue
329 lines
9.1 KiB
Vue
<template>
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<view class="tn-checkbox-class tn-checkbox" :style="[checkboxStyle]">
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<view
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class="tn-checkbox__icon-wrap"
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:class="[iconClass]"
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:style="[iconStyle]"
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@tap="toggle"
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>
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<view class="tn-checkbox__icon-wrap__icon" :class="[`tn-icon-${iconName}`]"></view>
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</view>
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<view
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class="tn-checkbox__label"
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:class="[labelClass]"
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:style="{
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fontSize: labelSize ? labelSize + 'rpx' : ''
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}"
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@tap="onClickLabel"
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>
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<slot></slot>
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</view>
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</view>
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</template>
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<script>
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export default {
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name: 'tn-checkbox',
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props: {
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// checkbox名称
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name: {
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type: [String, Number],
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default: ''
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},
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// 是否为选中状态
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value: {
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type: Boolean,
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default: false
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},
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// 禁用选择
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disabled: {
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type: Boolean,
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default: false
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},
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// 禁用点击标签进行选择
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disabledLabel: {
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type: Boolean,
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default: false
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},
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// 选择框的形状 square 方形 circle 圆形
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shape: {
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type: String,
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default: ''
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},
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// 选中时的颜色
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activeColor: {
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type: String,
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default: ''
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},
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// 组件大小
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size: {
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type: Number,
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default: 0
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},
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// 图标名称
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iconName: {
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type: String,
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default: 'success'
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},
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// 图标大小
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iconSize: {
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type: Number,
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default: 0
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},
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// label的字体大小
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labelSize: {
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type: Number,
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default: 0
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}
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},
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computed: {
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// 是否禁用选中，父组件的禁用会覆盖当前的禁用状态
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isDisabled() {
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return this.disabled ? this.disabled : (this.parent ? this.parentData.disabled : false)
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},
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// 是否禁用点击label选中，父组件的禁用会覆盖当前的禁用状态
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isDisabledLabel() {
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return this.disabledLabel ? this.disabledLabel : (this.parent ? this.parentData.disabledLabel : false)
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},
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// 尺寸
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checkboxSize() {
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return this.size ? this.size : (this.parent ? this.parentData.size : 34)
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},
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// 激活时的颜色
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elAvtiveColor() {
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return this.activeColor ? this.activeColor : (this.parent ? this.parentData.activeColor : '#01BEFF')
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},
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// 形状
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elShape() {
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return this.shape ? this.shape : (this.parent ? this.parentData.shape : 'square')
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},
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iconClass() {
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let clazz = ''
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clazz += (' tn-checkbox__icon-wrap--' + this.elShape)
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if (this.checkValue) clazz += ' tn-checkbox__icon-wrap--checked'
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if (this.isDisabled) clazz += ' tn-checkbox__icon-wrap--disabled'
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if (this.value && this.isDisabled) clazz += ' tn-checkbox__icon-wrap--disabled--checked'
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return clazz
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},
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iconStyle() {
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let style = {}
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// 判断是否用户手动禁用和传递的值
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if (this.elAvtiveColor && this.checkValue && !this.isDisabled) {
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style.borderColor = this.elAvtiveColor
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style.backgroundColor = this.elAvtiveColor
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}
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// checkbox内部的勾选图标，如果选中状态，为白色，否则为透明色即可
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style.color = this.checkValue ? '#FFFFFF' : 'transparent'
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style.width = this.checkboxSize + 'rpx'
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style.height = style.width
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style.fontSize = (this.iconSize ? this.iconSize : (this.parent ? this.parentData.iconSize : 20)) + 'rpx'
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return style
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},
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checkboxStyle() {
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let style = {}
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if (this.parent && this.parentData.width) {
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// #ifdef MP
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// 各家小程序因为它们特殊的编译结构，使用float布局
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style.float = 'left';
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// #endif
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// #ifndef MP
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// H5和APP使用flex布局
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style.flex = `0 0 ${this.parentData.width}`;
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// #endif
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}
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if(this.parent && this.parentData.wrap) {
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style.width = '100%';
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// #ifndef MP
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// H5和APP使用flex布局，将宽度设置100%，即可自动换行
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style.flex = '0 0 100%';
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// #endif
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}
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return style
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},
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labelClass() {
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let clazz = ''
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if (this.isDisabled) {
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clazz += ' tn-checkbox__label--disabled'
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}
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return clazz
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}
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},
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data() {
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return {
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// 当前checkbox的value值
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checkValue: false,
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parentData: {
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value: null,
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max: null,
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disabled: null,
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disabledLabel: null,
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shape: null,
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activeColor: null,
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size: null,
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width: null,
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wrap: null,
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iconSize: null
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}
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}
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},
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watch: {
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value(val) {
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this.checkValue = val
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}
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},
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created() {
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// 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，避免循环应用
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// this.parent = this.$tn.$parent.call(this, 'tn-checkbox-group')
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// // 如果存在u-checkbox-group，将本组件的this塞进父组件的children中
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// this.parent && this.parent.children.push(this)
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// // 初始化父组件的value值
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// this.parent && this.parent.emitEvent()
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this.updateParentData()
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this.parent && this.parent.children.push(this)
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},
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methods: {
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updateCheckValue() {
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// 更新当前checkbox的选中状态
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this.checkValue = (this.parent && this.parentData.value.includes(this.name)) || this.value === true
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if (this.parent) {
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if (this.value && !this.parentData.value.includes(this.name)) {
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this.parentData.value.push(this.name)
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this.parent.initValue(this.parentData.value)
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}
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}
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},
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updateParentData() {
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this.getParentData('tn-checkbox-group')
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this.updateCheckValue()
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},
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onClickLabel() {
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if (!this.isDisabled && !this.isDisabledLabel) {
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this.setValue()
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}
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},
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toggle() {
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if (!this.isDisabled) {
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this.setValue()
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}
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},
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emitEvent() {
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this.$emit('change', {
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name: this.name,
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value: !this.checkValue
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})
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if (this.parent) {
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this.checkValue = !this.checkValue
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// 执行父组件tn-checkbox-group的事件方法
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// 等待下一个周期再执行，因为this.$emit('input')作用于父组件，再反馈到子组件内部，需要时间
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setTimeout(() => {
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if(this.parent.emitEvent) this.parent.emitEvent();
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}, 80)
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}
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},
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// 设置input的值，通过v-modal绑定组件的值
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setValue() {
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// 判断是否为可选项组
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if (this.parent) {
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// 反转状态
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if (this.checkValue === true) {
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this.emitEvent()
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// this.$emit('input', !this.checkValue)
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} else {
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// 超出最大可选项，弹出提示
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if (this.parentData.value.length >= this.parentData.max) {
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return this.$tn.message.toast(`最多可选${this.parent.max}项`)
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}
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// 如果原来为未选中状态，需要选中的数量少于父组件中设置的max值，才可以选中
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this.emitEvent();
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// this.$emit('input', !this.checkValue);
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}
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} else {
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// 只有一个可选项
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this.emitEvent()
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this.$emit('input', !this.checkValue)
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}
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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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.tn-checkbox {
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/* #ifndef APP-NVUE */
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display: inline-flex;
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/* #endif */
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align-items: center;
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overflow: hidden;
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user-select: none;
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line-height: 1.8;
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&__icon-wrap {
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color: $tn-font-color;
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flex: none;
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display: flex;
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flex-direction: row;
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align-items: center;
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justify-content: center;
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box-sizing: border-box;
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width: 42rpx;
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height: 42rpx;
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color: transparent;
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text-align: center;
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transition-property: color, border-color, background-color;
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border: 1px solid $tn-font-sub-color;
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transition-duration: 0.2s;
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/* #ifdef MP-TOUTIAO */
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// 头条小程序兼容性问题，需要设置行高为0，否则图标偏下
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&__icon {
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line-height: 0;
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}
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/* #endif */
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&--circle {
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border-radius: 100%;
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}
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&--square {
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border-radius: 6rpx;
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}
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&--checked {
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color: #FFFFFF;
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background-color: $tn-main-color;
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border-color: $tn-main-color;
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}
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&--disabled {
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background-color: $tn-font-holder-color;
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border-color: $tn-font-sub-color;
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}
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&--disabled--checked {
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color: $tn-font-sub-color !important;
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}
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}
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&__label {
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word-wrap: break-word;
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margin-left: 10rpx;
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margin-right: 24rpx;
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color: $tn-font-color;
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font-size: 30rpx;
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&--disabled {
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color: $tn-font-sub-color;
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}
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}
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}
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</style>
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