lihaiCenter/uni_modules/uview-ui/components/u-code-input/u-code-input.vue

253 lines
7.3 KiB
Vue
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<template>
<view class="u-code-input">
<view
class="u-code-input__item"
:style="[itemStyle(index)]"
v-for="(item, index) in codeLength"
:key="index"
>
<view
class="u-code-input__item__dot"
v-if="dot && codeArray.length > index"
></view>
<text
v-else
:style="{
fontSize: $u.addUnit(fontSize),
fontWeight: bold ? 'bold' : 'normal',
color: color
}"
>{{codeArray[index]}}</text>
<view
class="u-code-input__item__line"
v-if="mode === 'line'"
:style="[lineStyle]"
></view>
<!-- #ifndef APP-PLUS -->
<view v-if="isFocus && codeArray.length === index" :style="{backgroundColor: color}" class="u-code-input__item__cursor"></view>
<!-- #endif -->
</view>
<input
:disabled="disabledKeyboard"
type="number"
:focus="focus"
:value="inputValue"
:maxlength="maxlength"
:adjustPosition="adjustPosition"
class="u-code-input__input"
@input="inputHandler"
:style="{
height: $u.addUnit(size)
}"
@focus="isFocus = true"
@blur="isFocus = false"
/>
</view>
</template>
<script>
import props from './props.js';
/**
* CodeInput 验证码输入
* @description 该组件一般用于验证用户短信验证码的场景也可以结合uView的键盘组件使用
* @tutorial https://www.uviewui.com/components/codeInput.html
* @property {String | Number} maxlength 最大输入长度 (默认 6
* @property {Boolean} dot 是否用圆点填充 (默认 false
* @property {String} mode 显示模式box-盒子模式line-底部横线模式 (默认 'box'
* @property {Boolean} hairline 是否细边框 (默认 false
* @property {String | Number} space 字符间的距离 (默认 10
* @property {String | Number} value 预置值
* @property {Boolean} focus 是否自动获取焦点 (默认 false
* @property {Boolean} bold 字体和输入横线是否加粗 (默认 false
* @property {String} color 字体颜色 (默认 '#606266'
* @property {String | Number} fontSize 字体大小单位px (默认 18
* @property {String | Number} size 输入框的大小,宽等于高 (默认 35
* @property {Boolean} disabledKeyboard 是否隐藏原生键盘如果想用自定义键盘的话需设置此参数为true (默认 false
* @property {String} borderColor 边框和线条颜色 (默认 '#c9cacc'
* @property {Boolean} disabledDot 是否禁止输入"."符号 (默认 true
*
* @event {Function} change 输入内容发生改变时触发,具体见上方说明 value当前输入的值
* @event {Function} finish 输入字符个数达maxlength值时触发见上方说明 value当前输入的值
* @example <u-code-input v-model="value4" :focus="true"></u-code-input>
*/
export default {
name: 'u-code-input',
mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
data() {
return {
inputValue: '',
isFocus: this.focus
}
},
watch: {
value: {
immediate: true,
handler(val) {
// 转为字符串,超出部分截掉
this.inputValue = String(val).substring(0, this.maxlength)
}
},
},
computed: {
// 根据长度循环输入框的个数因为头条小程序数值不能用于v-for
codeLength() {
return new Array(Number(this.maxlength))
},
// 循环item的样式
itemStyle() {
return index => {
const addUnit = uni.$u.addUnit
const style = {
width: addUnit(this.size),
height: addUnit(this.size)
}
// 盒子模式下,需要额外进行处理
if (this.mode === 'box') {
// 设置盒子的边框如果是细边框则设置为0.5px宽度
style.border = `${this.hairline ? 0.5 : 1}px solid ${this.borderColor}`
// 如果盒子间距为0的话
if (uni.$u.getPx(this.space) === 0) {
// 给第一和最后一个盒子设置圆角
if (index === 0) {
style.borderTopLeftRadius = '3px'
style.borderBottomLeftRadius = '3px'
}
if (index === this.codeLength.length - 1) {
style.borderTopRightRadius = '3px'
style.borderBottomRightRadius = '3px'
}
// 最后一个盒子的右边框需要保留
if (index !== this.codeLength.length - 1) {
style.borderRight = 'none'
}
}
}
if (index !== this.codeLength.length - 1) {
// 设置验证码字符之间的距离通过margin-right设置最后一个字符无需右边框
style.marginRight = addUnit(this.space)
} else {
// 最后一个盒子的有边框需要保留
style.marginRight = 0
}
return style
}
},
// 将输入的值转为数组给item历遍时根据当前的索引显示数组的元素
codeArray() {
return String(this.inputValue).split('')
},
// 下划线模式下,横线的样式
lineStyle() {
const style = {}
style.height = this.hairline ? '2px' : '4px'
style.width = uni.$u.addUnit(this.size)
// 线条模式下,背景色即为边框颜色
style.backgroundColor = this.borderColor
return style
}
},
methods: {
// 监听输入框的值发生变化
inputHandler(e) {
const value = e.detail.value
this.inputValue = value
// 是否允许输入“.”符号
if(this.disabledDot) {
this.$nextTick(() => {
this.inputValue = value.replace('.', '')
})
}
// 未达到maxlength之前发送change事件达到后发送finish事件
this.$emit('change', value)
// 修改通过v-model双向绑定的值
this.$emit('input', value)
// 达到用户指定输入长度时,发出完成事件
if (String(value).length >= Number(this.maxlength)) {
this.$emit('finish', value)
}
}
}
}
</script>
<style lang="scss" scoped>
@import "../../libs/css/components.scss";
$u-code-input-cursor-width: 1px;
$u-code-input-cursor-height: 40%;
$u-code-input-cursor-animation-duration: 1s;
$u-code-input-cursor-animation-name: u-cursor-flicker;
.u-code-input {
@include flex;
position: relative;
overflow: hidden;
&__item {
@include flex;
justify-content: center;
align-items: center;
position: relative;
&__text {
font-size: 15px;
color: $u-content-color;
}
&__dot {
width: 7px;
height: 7px;
border-radius: 100px;
background-color: $u-content-color;
}
&__line {
position: absolute;
bottom: 0;
height: 4px;
border-radius: 100px;
width: 40px;
background-color: $u-content-color;
}
/* #ifndef APP-PLUS */
&__cursor {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
width: $u-code-input-cursor-width;
height: $u-code-input-cursor-height;
animation: $u-code-input-cursor-animation-duration u-cursor-flicker infinite;
}
/* #endif */
}
&__input {
// 之所以需要input输入框是因为有它才能唤起键盘
// 这里将它设置为两倍的屏幕宽度,再将左边的一半移出屏幕,为了不让用户看到输入的内容
position: absolute;
left: -750rpx;
width: 1500rpx;
top: 0;
background-color: transparent;
text-align: left;
}
}
/* #ifndef APP-PLUS */
@keyframes u-cursor-flicker {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
opacity: 0;
}
}
/* #endif */
</style>