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- <template>
- <view class="tn-checkbox-class tn-checkbox" :style="[checkboxStyle]">
- <view
- class="tn-checkbox__icon-wrap"
- :class="[iconClass]"
- :style="[iconStyle]"
- @tap="toggle"
- >
- <view class="tn-checkbox__icon-wrap__icon" :class="[`tn-icon-${iconName}`]"></view>
- </view>
-
- <view
- class="tn-checkbox__label"
- :class="[labelClass]"
- :style="{
- fontSize: labelSize ? labelSize + 'rpx' : ''
- }"
- @tap="onClickLabel"
- >
- <slot></slot>
- </view>
- </view>
- </template>
- <script>
- export default {
- name: 'tn-checkbox',
- props: {
- // checkbox名称
- name: {
- type: [String, Number],
- default: ''
- },
- // 是否为选中状态
- value: {
- type: Boolean,
- default: false
- },
- // 禁用选择
- disabled: {
- type: Boolean,
- default: false
- },
- // 禁用点击标签进行选择
- disabledLabel: {
- type: Boolean,
- default: false
- },
- // 选择框的形状 square 方形 circle 圆形
- shape: {
- type: String,
- default: ''
- },
- // 选中时的颜色
- activeColor: {
- type: String,
- default: ''
- },
- // 组件大小
- size: {
- type: Number,
- default: 0
- },
- // 图标名称
- iconName: {
- type: String,
- default: 'success'
- },
- // 图标大小
- iconSize: {
- type: Number,
- default: 0
- },
- // label的字体大小
- labelSize: {
- type: Number,
- default: 0
- }
- },
- computed: {
- // 是否禁用选中,父组件的禁用会覆盖当前的禁用状态
- isDisabled() {
- return this.disabled ? this.disabled : (this.parent ? this.parentData.disabled : false)
- },
- // 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
- isDisabledLabel() {
- return this.disabledLabel ? this.disabledLabel : (this.parent ? this.parentData.disabledLabel : false)
- },
- // 尺寸
- checkboxSize() {
- return this.size ? this.size : (this.parent ? this.parentData.size : 34)
- },
- // 激活时的颜色
- elAvtiveColor() {
- return this.activeColor ? this.activeColor : (this.parent ? this.parentData.activeColor : '#01BEFF')
- },
- // 形状
- elShape() {
- return this.shape ? this.shape : (this.parent ? this.parentData.shape : 'square')
- },
- iconClass() {
- let clazz = ''
- clazz += (' tn-checkbox__icon-wrap--' + this.elShape)
-
- if (this.checkValue) clazz += ' tn-checkbox__icon-wrap--checked'
- if (this.isDisabled) clazz += ' tn-checkbox__icon-wrap--disabled'
- if (this.value && this.isDisabled) clazz += ' tn-checkbox__icon-wrap--disabled--checked'
-
- return clazz
- },
- iconStyle() {
- let style = {}
- // 判断是否用户手动禁用和传递的值
- if (this.elAvtiveColor && this.checkValue && !this.isDisabled) {
- style.borderColor = this.elAvtiveColor
- style.backgroundColor = this.elAvtiveColor
- }
-
- // 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
- style.color = this.checkValue ? '#FFFFFF' : 'transparent'
-
- style.width = this.checkboxSize + 'rpx'
- style.height = style.width
-
- style.fontSize = (this.iconSize ? this.iconSize : (this.parent ? this.parentData.iconSize : 20)) + 'rpx'
-
- return style
- },
- checkboxStyle() {
- let style = {}
- if (this.parent && this.parentData.width) {
- // #ifdef MP
- // 各家小程序因为它们特殊的编译结构,使用float布局
- style.float = 'left';
- // #endif
- // #ifndef MP
- // H5和APP使用flex布局
- style.flex = `0 0 ${this.parentData.width}`;
- // #endif
- }
- if(this.parent && this.parentData.wrap) {
- style.width = '100%';
- // #ifndef MP
- // H5和APP使用flex布局,将宽度设置100%,即可自动换行
- style.flex = '0 0 100%';
- // #endif
- }
-
- return style
- },
- labelClass() {
- let clazz = ''
- if (this.isDisabled) {
- clazz += ' tn-checkbox__label--disabled'
- }
- return clazz
- }
- },
- data() {
- return {
- // 当前checkbox的value值
- checkValue: false,
- parentData: {
- value: null,
- max: null,
- disabled: null,
- disabledLabel: null,
- shape: null,
- activeColor: null,
- size: null,
- width: null,
- wrap: null,
- iconSize: null
- }
- }
- },
- watch: {
- value(val) {
- this.checkValue = val
- }
- },
- created() {
- // 支付宝小程序不支持provide/inject,所以使用这个方法获取整个父组件,在created定义,避免循环应用
- // this.parent = this.$t.$parent.call(this, 'tn-checkbox-group')
- // // 如果存在u-checkbox-group,将本组件的this塞进父组件的children中
- // this.parent && this.parent.children.push(this)
- // // 初始化父组件的value值
- // this.parent && this.parent.emitEvent()
- this.updateParentData()
- this.parent && this.parent.children.push(this)
- },
- methods: {
- updateCheckValue() {
- // 更新当前checkbox的选中状态
- this.checkValue = (this.parent && this.parentData.value.includes(this.name)) || this.value === true
- if (this.parent) {
- if (this.value && !this.parentData.value.includes(this.name)) {
- this.parentData.value.push(this.name)
- this.parent.initValue(this.parentData.value)
- }
- }
- },
- updateParentData() {
- this.getParentData('tn-checkbox-group')
- this.updateCheckValue()
- },
- onClickLabel() {
- if (!this.isDisabled && !this.isDisabledLabel) {
- this.setValue()
- }
- },
- toggle() {
- if (!this.isDisabled) {
- this.setValue()
- }
- },
- emitEvent() {
- this.$emit('change', {
- name: this.name,
- value: !this.checkValue
- })
- if (this.parent) {
- this.checkValue = !this.checkValue
- // 执行父组件tn-checkbox-group的事件方法
- // 等待下一个周期再执行,因为this.$emit('input')作用于父组件,再反馈到子组件内部,需要时间
- setTimeout(() => {
- if(this.parent.emitEvent) this.parent.emitEvent();
- }, 80)
- }
- },
- // 设置input的值,通过v-modal绑定组件的值
- setValue() {
- // 判断是否为可选项组
- if (this.parent) {
- // 反转状态
- if (this.checkValue === true) {
- this.emitEvent()
- // this.$emit('input', !this.checkValue)
- } else {
- // 超出最大可选项,弹出提示
- if (this.parentData.value.length >= this.parentData.max) {
- return this.$t.message.toast(`最多可选${this.parent.max}项`)
- }
- // 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
- this.emitEvent();
- // this.$emit('input', !this.checkValue);
- }
- } else {
- // 只有一个可选项
- this.emitEvent()
- this.$emit('input', !this.checkValue)
- }
- }
- }
- }
- </script>
- <style lang="scss" scoped>
-
- .tn-checkbox {
- /* #ifndef APP-NVUE */
- display: inline-flex;
- /* #endif */
- align-items: center;
- overflow: hidden;
- user-select: none;
- line-height: 1.8;
-
- &__icon-wrap {
- color: $tn-font-color;
- flex: none;
- display: flex;
- flex-direction: row;
- align-items: center;
- justify-content: center;
- box-sizing: border-box;
- width: 42rpx;
- height: 42rpx;
- color: transparent;
- text-align: center;
- transition-property: color, border-color, background-color;
- border: 1px solid $tn-font-sub-color;
- transition-duration: 0.2s;
-
- /* #ifdef MP-TOUTIAO */
- // 头条小程序兼容性问题,需要设置行高为0,否则图标偏下
- &__icon {
- line-height: 0;
- }
- /* #endif */
-
- &--circle {
- border-radius: 100%;
- }
-
- &--square {
- border-radius: 6rpx;
- }
-
- &--checked {
- color: #FFFFFF;
- background-color: $tn-main-color;
- border-color: $tn-main-color;
- }
-
- &--disabled {
- background-color: $tn-font-holder-color;
- border-color: $tn-font-sub-color;
- }
-
- &--disabled--checked {
- color: $tn-font-sub-color !important;
- }
- }
-
- &__label {
- word-wrap: break-word;
- margin-left: 10rpx;
- margin-right: 24rpx;
- color: $tn-font-color;
- font-size: 30rpx;
-
- &--disabled {
- color: $tn-font-sub-color;
- }
- }
- }
- </style>
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