320 lines
7.8 KiB
Vue
320 lines
7.8 KiB
Vue
<template>
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<view
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class="u-input"
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:class="{
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'u-input--border': border,
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'u-input--error': validateState
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}"
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:style="{
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padding: `0 ${border ? 20 : 0}rpx`,
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borderColor: borderColor,
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textAlign: inputAlign
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}"
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@tap.stop="inputClick"
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>
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<textarea
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v-if="type == 'textarea'"
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class="u-input__input u-input__textarea"
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:style="[getStyle]"
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:value="value"
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:placeholder="placeholder"
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:placeholderStyle="placeholderStyle"
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:disabled="disabled"
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:maxlength="inputMaxlength"
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:fixed="fixed"
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:focus="focus"
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:autoHeight="autoHeight"
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@input="handleInput"
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@blur="handleBlur"
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@focus="onFocus"
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@confirm="onConfirm"
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/>
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<input
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v-else
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class="u-input__input"
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:type="type == 'password' ? 'text' : type"
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:style="[getStyle]"
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:value="defaultValue"
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:password="type == 'password' && showPassword"
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:placeholder="placeholder"
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:placeholderStyle="placeholderStyle"
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:disabled="disabled || type === 'select'"
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:maxlength="inputMaxlength"
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:focus="focus"
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:confirmType="confirmType"
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@focus="onFocus"
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@blur="handleBlur"
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@input="handleInput"
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@confirm="onConfirm"
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/>
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<view class="u-input__right-icon u-flex">
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<view class="u-input__right-icon__clear u-input__right-icon__item" v-if="clearable && value && focused">
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<u-icon size="32" name="close-circle-fill" color="#c0c4cc" @touchstart="onClear"/>
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</view>
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<view class="u-input__right-icon__clear u-input__right-icon__item" v-if="passwordIcon && type == 'password'">
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<u-icon size="32" :name="showPassword ? 'eye' : 'eye-fill'" color="#c0c4cc" @click="showPassword = !showPassword"/>
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</view>
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<view class="u-input__right-icon--select u-input__right-icon__item" v-if="type == 'select'" :class="{
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'u-input__right-icon--select--reverse': selectOpen
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}">
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<u-icon name="arrow-down-fill" size="26" color="#c0c4cc"></u-icon>
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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>
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import Emitter from '../../libs/util/emitter.js';
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export default {
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name: 'u-input',
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mixins: [Emitter],
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props: {
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value: {
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type: String,
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default: ''
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},
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// 输入框的类型，textarea，text，number
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type: {
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type: String,
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default: 'text'
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},
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clearable: {
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type: Boolean,
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default: true
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},
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inputAlign: {
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type: String,
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default: 'left'
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},
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placeholder: {
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type: String,
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default: '请输入内容'
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},
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disabled: {
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type: Boolean,
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default: false
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},
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maxlength: {
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type: [Number, String],
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default: 140
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},
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placeholderStyle: {
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type: String,
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default: 'color: #c0c4cc;'
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},
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confirmType: {
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type: String,
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default: 'done'
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},
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// 输入框的自定义样式
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customStyle: {
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type: Object,
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default() {
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return {};
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}
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},
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// 如果 textarea 是在一个 position:fixed 的区域，需要显示指定属性 fixed 为 true
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fixed: {
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type: Boolean,
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default: false
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},
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// 是否自动获得焦点
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focus: {
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type: Boolean,
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default: false
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},
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// 密码类型时，是否显示右侧的密码图标
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passwordIcon: {
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type: Boolean,
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default: true
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},
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// input|textarea是否显示边框
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border: {
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type: Boolean,
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default: false
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},
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// 输入框的边框颜色
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borderColor: {
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type: String,
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default: '#dcdfe6'
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},
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autoHeight: {
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type: Boolean,
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default: true
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},
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// type=select时，旋转右侧的图标，标识当前处于打开还是关闭select的状态
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// open-打开，close-关闭
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selectOpen: {
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type: Boolean,
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default: false
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},
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// 高度，单位rpx
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height: {
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type: [Number, String],
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default: ''
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},
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// 是否可清空
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clearable: {
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type: Boolean,
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default: true
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},
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},
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data() {
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return {
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defaultValue: this.value,
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inputHeight: 70, // input的高度
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textareaHeight: 100, // textarea的高度
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validateState: false, // 当前input的验证状态，用于错误时，边框是否改为红色
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focused: false, // 当前是否处于获得焦点的状态
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showPassword: this.passwordIcon, // 是否预览密码
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marginRight: 0, // 输入框右边的距离，当获得焦点时各一个后面的距离，避免点击右边图标误触输入框
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};
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},
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watch: {
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value(nVal, oVal) {
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this.defaultValue = nVal;
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// 当值发生变化，且为select类型时(此时input被设置为disabled，不会触发@input事件)，模拟触发@input事件
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if(nVal != oVal && this.type == 'select') this.handleInput({
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detail: {
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value: nVal
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}
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})
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},
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focused(nVal) {
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if(this.clearable && this.value) {
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this.getMarginRight();
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}
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}
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},
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computed: {
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// 因为uniapp的input组件的maxlength组件必须要数值，这里转为数值，给用户可以传入字符串数值
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inputMaxlength() {
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return Number(this.maxlength);
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},
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getStyle() {
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let style = {};
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// 如果没有自定义高度，就根据type为input还是textare来分配一个默认的高度
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style.minHeight = this.height ? this.height + 'rpx' : this.type == 'textarea' ?
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this.textareaHeight + 'rpx' : this.inputHeight + 'rpx';
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style.marginRight = this.marginRight + 'px';
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style = Object.assign(style, this.customStyle);
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return style;
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}
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},
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created() {
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// 监听u-form-item发出的错误事件，将输入框边框变红色
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this.$on('on-form-item-error', this.onFormItemError);
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},
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mounted() {
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this.getMarginRight();
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},
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methods: {
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// 计算输入框的右边距
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getMarginRight() {
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this.$nextTick(() => {
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this.$uGetRect('.u-input__right-icon').then(res => {
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// 此处20rpx为图标绝对定位右侧的“right”
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this.marginRight = res.width + uni.upx2px(20);
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})
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})
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},
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/**
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* change 事件
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* @param event
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*/
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handleInput(event) {
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// 当前model 赋值
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this.defaultValue = event.detail.value;
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// vue 原生的方法 return 出去
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this.$emit('input', event.detail.value);
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// 过一个生命周期再发送事件给u-form-item，否则this.$emit('input')更新了父组件的值，但是微信小程序上
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// 尚未更新到u-form-item，导致获取的值为空，从而校验混论
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this.$nextTick(() => {
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// 将当前的值发送到 u-form-item 进行校验
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this.dispatch('u-form-item', 'on-form-change', event.detail.value);
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});
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},
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/**
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* blur 事件
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* @param event
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*/
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handleBlur(event) {
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this.focused = false;
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// vue 原生的方法 return 出去
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this.$emit('blur', event.detail.value);
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this.$nextTick(() => {
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// 将当前的值发送到 u-form-item 进行校验
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this.dispatch('u-form-item', 'on-form-blur', event.detail.value);
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});
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},
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onFormItemError(status) {
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this.validateState = status;
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},
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onFocus(event) {
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this.focused = true;
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this.$emit('focus');
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},
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onConfirm(e) {
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this.$emit('confirm', e.detail.value);
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},
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onClear(event) {
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this.$emit('input');
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},
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inputClick() {
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this.$emit('click');
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}
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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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.u-input {
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position: relative;
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flex: 1;
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&__input {
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//height: $u-form-item-height;
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font-size: 28rpx;
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color: $u-main-color;
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}
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&__textarea {
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width: auto;
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font-size: 28rpx;
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color: $u-main-color;
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padding: 10rpx 0;
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line-height: normal;
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}
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&--border {
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border-radius: 6rpx;
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border-radius: 4px;
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border: 1px solid $u-form-item-border-color;
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}
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&--error {
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border-color: $u-type-error!important;
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}
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&__right-icon {
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position: absolute;
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right: 20rpx;
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top: 50%;
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z-index: 3;
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transform: translateY(-50%);
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&__item {
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margin-left: 10rpx;
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}
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&--select {
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transition: transform .4s;
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&--reverse {
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transform: rotate(-180deg);
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}
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}
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}
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}
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</style>
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