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<template>
<view
class="u-checkbox-group"
:class="bemClass"
>
<slot></slot>
</view>
</template>
<script>
import { props } from './props';
import { mpMixin } from '../../libs/mixin/mpMixin';
import { mixin } from '../../libs/mixin/mixin';
/**
* checkboxGroup 复选框组
* @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
* @tutorial https://ijry.github.io/uview-plus/components/checkbox.html
* @property {String} name 标识符
* @property {Array} value 绑定的值
* @property {String} shape 形状circle-圆形square-方形 (默认 'square'
* @property {Boolean} disabled 是否禁用全部checkbox (默认 false
* @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'
* @property {String} inactiveColor 未选中的颜色 (默认 '#c8c9cc'
* @property {String | Number} size 整个组件的尺寸 单位px (默认 18
* @property {String} placement 布局方式row-横向column-纵向 (默认 'row'
* @property {String | Number} labelSize label的字体大小px单位 (默认 14
* @property {String} labelColor label的字体颜色 (默认 '#303133'
* @property {Boolean} labelDisabled 是否禁止点击文本操作 (默认 false )
* @property {String} iconColor 图标颜色 (默认 '#ffffff'
* @property {String | Number} iconSize 图标的大小单位px (默认 12
* @property {String} iconPlacement 勾选图标的对齐方式left-左边right-右边 (默认 'left'
* @property {Boolean} borderBottom placement为row时是否显示下边框 (默认 false
* @event {Function} change 任一个checkbox状态发生变化时触发回调为一个对象
* @event {Function} input 修改通过v-model绑定的值时触发回调为一个对象
* @example <u-checkbox-group></u-checkbox-group>
*/
export default {
name: 'u-checkbox-group',
mixins: [mpMixin, mixin,props],
computed: {
// 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
// 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)
// 拉取父组件新的变化后的参数
parentData() {
return [
// #ifdef VUE2
this.value,
// #endif
// #ifdef VUE3
this.modelValue,
// #endif
this.disabled,
this.inactiveColor,
this.activeColor,
this.size,
this.labelDisabled,
this.shape,
this.iconSize,
this.borderBottom,
this.placement,
];
},
bemClass() {
// this.bem为一个computed变量在mixin中
return this.bem('checkbox-group', ['placement'])
},
},
watch: {
// 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
parentData: {
handler() {
if (this.children.length) {
this.children.map((child) => {
// 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)
typeof child.init === "function" && child.init();
});
}
},
deep: true,
},
},
data() {
return {
}
},
created() {
this.children = []
},
// #ifdef VUE3
emits: ['update:modelValue', 'change'],
// #endif
methods: {
// 将其他的checkbox设置为未选中的状态
unCheckedOther(childInstance) {
const values = []
this.children.map(child => {
// 将被选中的checkbox放到数组中返回
if (child.isChecked) {
values.push(child.name)
}
})
// 发出事件
this.$emit('change', values)
// 修改通过v-model绑定的值
// #ifdef VUE3
this.$emit("update:modelValue", values);
// #endif
// #ifdef VUE2
this.$emit("input", values);
// #endif
},
}
}
</script>
<style lang="scss" scoped>
@import "../../libs/css/components.scss";
.u-checkbox-group {
&--row {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-flow: row wrap;
}
&--column {
@include flex(column);
}
}
</style>