122 lines
2.4 KiB
Vue
122 lines
2.4 KiB
Vue
<template>
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<view class="textarea-row">
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<view class="form-row__label">
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{{ name }}<text v-if="required" class="form-cell--required"></text>
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</view>
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<view class="mt-10">
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<textarea
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:auto-height="autoHeight"
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:disabled="disableChange"
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:value="value"
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class="form-textarea"
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:class="border ? 'form-textarea--border' : ''"
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:style="textareaStyle"
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:placeholder="placeholder"
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placeholder-class="form__placeholder"
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:maxlength="wordLimit"
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@input="change($event)" />
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<view v-if="wordLimit > 0" class="form-textarea__count">
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{{ value && value.length ? value.length : 0 }} / {{ wordLimit }}
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</view>
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</view>
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</view>
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</template>
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<script setup>
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import { computed } from 'vue';
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const emits = defineEmits(['change']);
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const props = defineProps({
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border: {
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type: Boolean,
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default: true
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},
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form: {
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type: Object,
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default: () => ({})
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},
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name: {
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default: ''
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},
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required: {
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type: Boolean,
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default: false
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},
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title: {
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default: ''
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},
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disableChange: {
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type: Boolean,
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default: false
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},
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wordLimit: {
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type: [Number, String],
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default: 100
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},
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autoHeight: {
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type: Boolean,
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default: false
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},
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rows: {
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type: [Number, String],
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default: 3
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}
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})
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const placeholder = computed(() => `请输入${props.name || ''}`)
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const value = computed(() => {
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const v = props.form?.[props.title];
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return v === undefined || v === null ? '' : String(v);
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})
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const wordLimit = computed(() => {
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if (typeof props.wordLimit === 'string' && Number(props.wordLimit) > 0) {
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return Math.ceil(Number(props.wordLimit))
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}
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if (typeof props.wordLimit === 'number' && props.wordLimit > 0) {
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return props.wordLimit
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}
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return 100
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})
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const textareaStyle = computed(() => {
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const rowCount = typeof props.rows === 'number' ? props.rows : (Number(props.rows) || 3);
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// 每行大约42rpx高度（28rpx字体 + 14rpx行距）
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const minHeight = rowCount * 42;
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return `min-height: ${minHeight}rpx;`;
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})
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function change(e) {
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emits('change', {
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title: props.title,
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value: e.detail.value
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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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.textarea-row {
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padding: 24rpx 30rpx;
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border-bottom: 1px solid #eee;
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font-size: 28rpx;
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}
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.form-textarea {
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width: 100%;
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font-size: 28rpx;
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padding: 20rpx;
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border-radius: 8rpx;
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box-sizing: border-box;
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}
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.form-textarea--border {
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border: 1px solid #eee;
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}
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.form-textarea__count {
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padding-top: 20rpx;
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text-align: right;
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color: #666;
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font-size: 24rpx;
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}
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</style>
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