/**
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* CNumberStep
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* @author Tevin
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*/
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<template>
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<view class="c-number-step">
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<AtInput
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ref="input"
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:name="itemRes.name"
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:title="itemRes.label"
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:required="itemRes.required"
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:disabled="itemRes.disabled"
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:error="itemRes.error"
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/>
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<view
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class="c-number-step-step"
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:class="[unit?'on-unit':'', isEmpty?'on-empty':'']"
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ref="number"
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>
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<AtInputNumber
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:min="range[0]"
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:max="range[1]"
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:step="step"
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:width="120"
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:value="itemRes.formData[itemRes.name]"
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:onChange="evt=>handleChange(evt)"
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/>
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<view class="c-number-step-unit">{{unit}}</view>
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</view>
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</view>
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</template>
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<script>
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import Taro from '@tarojs/taro';
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import { $ } from '@tarojs/extend';
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import { AtInput, AtInputNumber } from 'taro-ui-vue';
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import './cNumberStep.scss';
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export default {
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name: 'CNumberStep',
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components: {
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AtInput,
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AtInputNumber,
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},
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props: {
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// 表单数据资源（表单组件内部机制专用）
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itemRes: Object,
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// 占位提示
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placeholder: String,
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// 取值范围
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range: {
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type: Array,
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default: () => [0, 100],
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},
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// 步长
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step: {
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type: Number,
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default: 1,
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},
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// 奇偶修正 odd 奇数 / even 偶数
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correct: {
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type: String,
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default: '',
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},
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// 数值单位
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unit: {
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type: String,
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default: '',
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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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computed: {
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// 空值判断，弥补空值时显示最小值的问题
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isEmpty() {
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const curVal = this.itemRes.formData[this.itemRes.name];
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if (typeof curVal === 'undefined') {
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return true;
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} else if (!curVal && curVal !== 0) {
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return true;
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} else {
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return false;
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}
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},
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},
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methods: {
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handleChange(val) {
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// 奇偶修正模式
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if (this.correct) {
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const lastValue = this.isEmpty
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? this.range[0]
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: this.itemRes.formData[this.itemRes.name];
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let nextValue = val;
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if (
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(this.correct === 'odd' && nextValue % 2 === 0) ||
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(this.correct === 'even' && nextValue % 2 === 1)
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) {
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// 增加
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if (lastValue <= nextValue) {
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nextValue++;
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}
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// 减小
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else if (lastValue > nextValue) {
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nextValue--;
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}
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}
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// 范围
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nextValue = Math.max(nextValue, this.range[0]);
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nextValue = Math.min(nextValue, this.range[1]);
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this.itemRes.onChange(nextValue);
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}
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// 正常模式
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else {
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this.itemRes.onChange(val);
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}
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},
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},
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mounted() {
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if (process.env.TARO_ENV === 'h5') {
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$(this.$refs.input.$el)
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.find('.at-input__container')
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.prepend(this.$refs.number.$el);
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} else if (process.env.TARO_ENV === 'weapp') {
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$(this.$refs.input.$el)
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.find('.at-input__container')
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.append(this.$refs.number);
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}
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},
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};
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</script>
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