341 lines
11 KiB
Vue
341 lines
11 KiB
Vue
<template>
|
||
<view
|
||
class="u-textarea"
|
||
:class="[
|
||
{
|
||
'u-textarea--error': validateState
|
||
},
|
||
textareaClass,
|
||
customClass
|
||
]"
|
||
:style="$u.toStyle(textareaStyle, customStyle)"
|
||
>
|
||
<!-- prettier-ignore -->
|
||
<textarea
|
||
class="u-textarea__field"
|
||
:value="innerValue"
|
||
:style="getStyle"
|
||
:placeholder="String(props.placeholder)"
|
||
:placeholder-style="$u.toStyle(props.placeholderStyle)"
|
||
:placeholder-class="props.placeholderClass"
|
||
:disabled="props.disabled"
|
||
:focus="props.focus"
|
||
:autoHeight="props.autoHeight"
|
||
:fixed="props.fixed"
|
||
:cursorSpacing="props.cursorSpacing"
|
||
:cursor="Number(props.cursor)"
|
||
:showConfirmBar="props.showConfirmBar"
|
||
:selectionStart="props.selectionStart"
|
||
:selectionEnd="props.selectionEnd"
|
||
:adjustPosition="props.adjustPosition"
|
||
:disableDefaultPadding="props.disableDefaultPadding"
|
||
:holdKeyboard="props.holdKeyboard"
|
||
:maxlength="Number(props.maxlength)"
|
||
:confirmType="(props.confirmType as any)"
|
||
:ignoreCompositionEvent="props.ignoreCompositionEvent"
|
||
@focus="onFocus"
|
||
@blur="onBlur"
|
||
@linechange="onLinechange"
|
||
@input="onInput"
|
||
@confirm="onConfirm"
|
||
@keyboardheightchange="onKeyboardheightchange"
|
||
></textarea>
|
||
<text
|
||
class="u-textarea__count"
|
||
:style="{
|
||
'background-color': props.disabled ? 'transparent' : 'var(--u-bg-white)'
|
||
}"
|
||
v-if="props.count"
|
||
>
|
||
{{ innerValue.length }}/{{ props.maxlength }}
|
||
</text>
|
||
|
||
<view class="u-textarea__right-icon u-flex">
|
||
<view
|
||
class="u-textarea__right-icon__clear u-textarea__right-icon__item"
|
||
v-if="clearable && modelValue != '' && !disabled"
|
||
>
|
||
<u-icon size="32" name="close-circle-fill" color="var(--u-light-color)" @click="onClear" />
|
||
</view>
|
||
</view>
|
||
</view>
|
||
</template>
|
||
|
||
<script lang="ts">
|
||
export default {
|
||
name: 'u-textarea',
|
||
options: {
|
||
addGlobalClass: true,
|
||
// #ifndef MP-TOUTIAO
|
||
virtualHost: true,
|
||
// #endif
|
||
styleIsolation: 'shared'
|
||
}
|
||
};
|
||
</script>
|
||
|
||
<script setup lang="ts">
|
||
import { ref, computed, watch, nextTick } from 'vue';
|
||
import { TextareaProps } from './types';
|
||
import { $u, useChildren } from '../../';
|
||
|
||
/**
|
||
* Textarea 文本域
|
||
* @description 文本域此组件满足了可能出现的表单信息补充，编辑等实际逻辑的功能，内置了字数校验等
|
||
* @tutorial https://uviewpro.cn/zh/components/textarea.html
|
||
* @property {String | Number} value 输入框的内容
|
||
* @property {String | Number} placeholder 输入框为空时占位符
|
||
* @property {String} placeholderClass 指定placeholder的样式类，注意页面或组件的style中写了scoped时，需要在类名前写/deep/ （ 默认 'input-placeholder' ）
|
||
* @property {String | Object} placeholderStyle 指定placeholder的样式，字符串/对象形式，如"color: red;"
|
||
* @property {String | Number} height 输入框高度（默认 70 ）
|
||
* @property {String} confirmType 设置键盘右下角按钮的文字，仅微信小程序，App-vue和H5有效（默认 'done' ）
|
||
* @property {Boolean} disabled 是否禁用（默认 false ）
|
||
* @property {Boolean} count 是否显示统计字数（默认 false ）
|
||
* @property {Boolean} focus 是否自动获取焦点，nvue不支持，H5取决于浏览器的实现（默认 false ）
|
||
* @property {Boolean | Function} autoHeight 是否自动增加高度（默认 false ）
|
||
* @property {Boolean} fixed 如果textarea是在一个position:fixed的区域，需要显示指定属性fixed为true（默认 false ）
|
||
* @property {Number} cursorSpacing 指定光标与键盘的距离（默认 0 ）
|
||
* @property {String | Number} cursor 指定focus时的光标位置
|
||
* @property {Function} formatter 内容式化函数
|
||
* @property {Boolean} showConfirmBar 是否显示键盘上方带有”完成“按钮那一栏，（默认 true ）
|
||
* @property {Number} selectionStart 光标起始位置，自动聚焦时有效，需与selection-end搭配使用，（默认 -1 ）
|
||
* @property {Number | Number} selectionEnd 光标结束位置，自动聚焦时有效，需与selection-start搭配使用（默认 -1 ）
|
||
* @property {Boolean} adjustPosition 键盘弹起时，是否自动上推页面（默认 true ）
|
||
* @property {Boolean | Number} disableDefaultPadding 是否去掉 iOS 下的默认内边距，只微信小程序有效（默认 false ）
|
||
* @property {Boolean} holdKeyboard focus时，点击页面的时候不收起键盘，只微信小程序有效（默认 false ）
|
||
* @property {String | Number} maxlength 最大输入长度，设置为 -1 的时候不限制最大长度（默认 140 ）
|
||
* @property {String} border 边框类型，surround-四周边框，none-无边框，bottom-底部边框（默认 'surround' ）
|
||
* @property {Boolean} ignoreCompositionEvent 是否忽略组件内对文本合成系统事件的处理
|
||
* @event {Function(e)} focus 输入框聚焦时触发，event.detail = { value, height }，height 为键盘高度
|
||
* @event {Function(e)} blur 输入框失去焦点时触发，event.detail = {value, cursor}
|
||
* @event {Function(e)} linechange 输入框行数变化时调用，event.detail = {height: 0, heightRpx: 0, lineCount: 0}
|
||
* @event {Function(e)} input 当键盘输入时，触发 input 事件
|
||
* @event {Function(e)} confirm 点击完成时， 触发 confirm 事件
|
||
* @event {Function(e)} keyboardheightchange 键盘高度发生变化的时候触发此事件
|
||
* @example <u-textarea v-model="value1" placeholder="请输入内容" ></u-textarea>
|
||
*/
|
||
|
||
const props = defineProps(TextareaProps);
|
||
const emit = defineEmits([
|
||
'update:modelValue',
|
||
'focus',
|
||
'blur',
|
||
'linechange',
|
||
'input',
|
||
'confirm',
|
||
'keyboardheightchange',
|
||
'change'
|
||
]);
|
||
|
||
const { emitToParent } = useChildren('u-textarea', 'u-form-item');
|
||
|
||
// state
|
||
const innerValue = ref('');
|
||
const focused = ref(false);
|
||
const firstChange = ref(true);
|
||
const changeFromInner = ref(false);
|
||
const innerFormatter = ref((v: any) => v);
|
||
const validateState = ref(props.validateState); // 当前input的验证状态，用于错误时，边框是否改为红色
|
||
|
||
// watch value prop
|
||
watch(
|
||
() => props.modelValue,
|
||
(newVal: any) => {
|
||
innerValue.value = newVal;
|
||
/* #ifdef H5 */
|
||
// 在H5中，外部value变化后，修改input中的值，不会触发@input事件，此时手动调用值变化方法
|
||
if (firstChange.value === false && changeFromInner.value === false) {
|
||
valueChange();
|
||
}
|
||
/* #endif */
|
||
firstChange.value = false;
|
||
// 重置changeFromInner的值为false，标识下一次引起默认为外部引起的
|
||
changeFromInner.value = false;
|
||
},
|
||
{ immediate: true }
|
||
);
|
||
|
||
// 监听 validateState 变化
|
||
watch(
|
||
() => props.validateState,
|
||
val => {
|
||
validateState.value = val;
|
||
}
|
||
);
|
||
|
||
// 组件的类名
|
||
const textareaClass = computed(() => {
|
||
let classes: string[] = [];
|
||
if (props.border && props.border !== 'none') {
|
||
if (props.border === 'surround') {
|
||
classes = classes.concat(['u-textarea--border', 'u-textarea--radius']);
|
||
} else if (props.border === 'bottom') {
|
||
classes = classes.concat(['u-border-bottom', 'u-textarea--no-radius']);
|
||
} else {
|
||
classes = classes.concat(['u-textarea--border', 'u-textarea--radius']);
|
||
}
|
||
}
|
||
props.disabled && classes.push('u-textarea--disabled');
|
||
return classes.join(' ');
|
||
});
|
||
|
||
// 组件的样式
|
||
const textareaStyle = computed(() => {
|
||
const style: Record<string, any> = {};
|
||
if (props.border && props.border !== 'none') {
|
||
style.padding = `${props.border ? 20 : 0}rpx`;
|
||
}
|
||
// #ifdef APP-NVUE
|
||
if ($u.os() === 'android') {
|
||
style.paddingTop = '6px';
|
||
style.paddingLeft = '9px';
|
||
style.paddingBottom = '3px';
|
||
style.paddingRight = '6px';
|
||
}
|
||
// #endif
|
||
return style;
|
||
});
|
||
|
||
const getStyle = computed(() => {
|
||
let style: Record<string, any> = {};
|
||
// 如果没有自定义高度，就根据textarea来分配一个默认的高度
|
||
if (props.autoHeight) {
|
||
style.minHeight = $u.addUnit(props.height || '100rpx');
|
||
style.height = 'auto';
|
||
} else {
|
||
style.height = $u.addUnit(props.height);
|
||
}
|
||
return $u.toStyle(style, props.customStyle);
|
||
});
|
||
|
||
function onFormItemError(status: boolean) {
|
||
validateState.value = status;
|
||
}
|
||
|
||
// methods
|
||
function setFormatter(e: any) {
|
||
innerFormatter.value = e;
|
||
}
|
||
|
||
function onFocus(e: any) {
|
||
emit('focus', e);
|
||
}
|
||
|
||
function onBlur(e: any) {
|
||
setTimeout(() => {
|
||
e.detail.value = innerValue.value;
|
||
let value = e.detail.value;
|
||
emit('blur', e);
|
||
emitToParent('onFormBlur', value);
|
||
}, 40);
|
||
}
|
||
|
||
function onLinechange(e: any) {
|
||
emit('linechange', e);
|
||
}
|
||
|
||
function onInput(e: any) {
|
||
let { value = '' } = e.detail || {};
|
||
// 格式化过滤方法
|
||
const formatter = props.formatter || innerFormatter.value;
|
||
const formatValue = typeof formatter === 'function' ? formatter(value) : value;
|
||
// 为了避免props的单向数据流特性，需要先将innerValue值设置为当前值，再在$nextTick中重新赋予设置后的值才有效
|
||
innerValue.value = value;
|
||
nextTick(() => {
|
||
innerValue.value = formatValue;
|
||
valueChange();
|
||
});
|
||
}
|
||
|
||
function valueChange() {
|
||
const value = innerValue.value;
|
||
nextTick(() => {
|
||
emit('input', value);
|
||
emit('update:modelValue', value);
|
||
// 标识value值的变化是由内部引起的
|
||
changeFromInner.value = true;
|
||
emit('change', value);
|
||
emitToParent('onFormChange', value);
|
||
});
|
||
}
|
||
|
||
function onConfirm(e: any) {
|
||
emit('confirm', e);
|
||
}
|
||
|
||
function onKeyboardheightchange(e: any) {
|
||
emit('keyboardheightchange', e);
|
||
}
|
||
function onClear(event: any) {
|
||
try {
|
||
event.stopPropagation();
|
||
} catch (e) {
|
||
console.log(e);
|
||
}
|
||
innerValue.value = '';
|
||
valueChange();
|
||
}
|
||
|
||
defineExpose({
|
||
onFormItemError
|
||
});
|
||
</script>
|
||
|
||
<style lang="scss" scoped>
|
||
@import '../../libs/css/style.components.scss';
|
||
|
||
.u-textarea {
|
||
border-radius: 4px;
|
||
background-color: var(--u-bg-white);
|
||
position: relative;
|
||
@include flex;
|
||
flex: 1;
|
||
|
||
&--border {
|
||
border-radius: 4px;
|
||
border: 1px solid $u-border-color;
|
||
}
|
||
|
||
&--error {
|
||
border-color: $u-type-error !important;
|
||
}
|
||
|
||
&--radius {
|
||
border-radius: 4px;
|
||
}
|
||
|
||
&--no-radius {
|
||
border-radius: 0;
|
||
}
|
||
|
||
&--disabled {
|
||
background-color: $u-bg-gray-light;
|
||
}
|
||
|
||
&__field {
|
||
flex: 1;
|
||
font-size: 28rpx;
|
||
color: $u-content-color;
|
||
width: 100%;
|
||
}
|
||
|
||
&__count {
|
||
position: absolute;
|
||
right: 1px;
|
||
bottom: 0;
|
||
font-size: 12px;
|
||
color: $u-tips-color;
|
||
background-color: var(--u-bg-white);
|
||
padding: 1px 4px;
|
||
border-radius: 10px;
|
||
line-height: 16px;
|
||
}
|
||
|
||
&__right-icon {
|
||
&__item {
|
||
margin-left: 10rpx;
|
||
}
|
||
}
|
||
}
|
||
</style>
|