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uni_modules/uview-pro/components/u-message-input/types.ts

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+import type { ExtractPropTypes, PropType } from 'vue';
+import type { InputType, MessageInputMode } from '../../types/global';
+import { getColor } from '../../';
+import { baseProps } from '../common/props';
+
+/**
+ * u-message-input 组件 props 类型定义
+ * @description 验证码/短信输入框，支持多种样式
+ */
+export const MessageInputProps = {
+    ...baseProps,
+    /** 输入框的类型，textarea，text，number */
+    type: {
+        type: String as PropType<InputType>,
+        default: 'number'
+    },
+    /** 最大输入长度 */
+    maxlength: {
+        type: [Number, String] as PropType<number | string>,
+        default: 4
+    },
+    /** 是否用圆点填充 */
+    dotFill: {
+        type: Boolean,
+        default: false
+    },
+    /** 显示模式，box-盒子，bottomLine-底部横线，middleLine-中部横线 */
+    mode: {
+        type: String as PropType<MessageInputMode>,
+        default: 'box'
+    },
+    /** 预置值 */
+    value: {
+        type: [String, Number] as PropType<string | number>,
+        default: ''
+    },
+    /** 当前激活输入item，是否带有呼吸效果 */
+    breathe: {
+        type: Boolean,
+        default: true
+    },
+    /** 是否自动获取焦点 */
+    focus: {
+        type: Boolean,
+        default: false
+    },
+    /** 字体是否加粗 */
+    bold: {
+        type: Boolean,
+        default: false
+    },
+    /** 字体大小 */
+    fontSize: {
+        type: [String, Number] as PropType<string | number>,
+        default: 60
+    },
+    /** 激活样式 */
+    activeColor: {
+        type: String,
+        default: () => getColor('primary')
+    },
+    /** 未激活的样式 */
+    inactiveColor: {
+        type: String,
+        default: () => getColor('contentColor')
+    },
+    /** 输入框的大小，单位rpx，宽等于高 */
+    width: {
+        type: [Number, String] as PropType<number | string>,
+        default: '80'
+    },
+    /** 是否隐藏原生键盘 */
+    disabledKeyboard: {
+        type: Boolean,
+        default: false
+    }
+};
+
+/**
+ * u-message-input 组件 props 类型
+ */
+export type MessageInputProps = ExtractPropTypes<typeof MessageInputProps>;

uni_modules/uview-pro/components/u-message-input/u-message-input.vue

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+<template>
+    <view class="u-char-box" :class="customClass" :style="$u.toStyle(customStyle)">
+        <view class="u-char-flex">
+            <!-- prettier-ignore -->
+            <input
+                :disabled="props.disabledKeyboard"
+                :value="valueModel"
+                :type="(type as any)"
+                :focus="props.focus"
+                :maxlength="Number(props.maxlength)"
+                class="u-input"
+                @input="getVal"
+            />
+            <view v-for="(item, index) in loopCharArr" :key="index">
+                <view
+                    :class="[
+                        props.breathe && charArrLength === index ? 'u-breathe' : '',
+                        'u-char-item',
+                        charArrLength === index && props.mode == 'box' ? 'u-box-active' : '',
+                        props.mode === 'box' ? 'u-box' : ''
+                    ]"
+                    :style="{
+                        fontWeight: props.bold ? 'bold' : 'normal',
+                        fontSize: props.fontSize + 'rpx',
+                        width: props.width + 'rpx',
+                        height: props.width + 'rpx',
+                        color: props.inactiveColor,
+                        borderColor:
+                            charArrLength === index && props.mode == 'box' ? props.activeColor : props.inactiveColor
+                    }"
+                >
+                    <view
+                        class="u-placeholder-line"
+                        :style="{
+                            display: charArrLength === index ? 'block' : 'none',
+                            height: Number(props.width) * 0.5 + 'rpx'
+                        }"
+                        v-if="props.mode !== 'middleLine'"
+                    ></view>
+                    <view
+                        v-if="props.mode === 'middleLine' && charArrLength <= index"
+                        :class="[
+                            props.breathe && charArrLength === index ? 'u-breathe' : '',
+                            charArrLength === index ? 'u-middle-line-active' : ''
+                        ]"
+                        class="u-middle-line"
+                        :style="{
+                            height: props.bold ? '4px' : '2px',
+                            background: charArrLength === index ? props.activeColor : props.inactiveColor
+                        }"
+                    ></view>
+                    <view
+                        v-if="props.mode === 'bottomLine'"
+                        :class="[
+                            props.breathe && charArrLength === index ? 'u-breathe' : '',
+                            charArrLength === index ? 'u-bottom-line-active' : ''
+                        ]"
+                        class="u-bottom-line"
+                        :style="{
+                            height: props.bold ? '4px' : '2px',
+                            background: charArrLength === index ? props.activeColor : props.inactiveColor
+                        }"
+                    ></view>
+                    <block v-if="!props.dotFill"> {{ charArr[index] ? charArr[index] : '' }}</block>
+                    <block v-else>
+                        <text class="u-dot">{{ charArr[index] ? '●' : '' }}</text>
+                    </block>
+                </view>
+            </view>
+        </view>
+    </view>
+</template>
+
+<script lang="ts">
+export default {
+    name: 'u-message-input',
+    options: {
+        addGlobalClass: true,
+        // #ifndef MP-TOUTIAO
+        virtualHost: true,
+        // #endif
+        styleIsolation: 'shared'
+    }
+};
+</script>
+
+<script setup lang="ts">
+import { ref, computed, watch } from 'vue';
+import { MessageInputProps } from './types';
+import { $u } from '../../';
+
+/**
+ * messageInput 验证码输入框
+ * @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://uviewpro.cn/zh/components/messageInput.html
+ * @property {String|Number} maxlength 输入字符个数（默认4）
+ * @property {Boolean} dot-fill 是否用圆点填充（默认false）
+ * @property {String} mode 模式选择，见上方"基本使用"说明（默认box）
+ * @property {String|Number} value 预置值
+ * @property {Boolean} breathe 是否开启呼吸效果，见上方说明（默认true）
+ * @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true）
+ * @property {String|Number} font-size 字体大小，单位rpx（默认60）
+ * @property {String} active-color 当前激活输入框的样式（默认主题色primary）
+ * @property {String} inactive-color 非激活输入框的样式，文字颜色同此值（默认var(--u-content-color)）
+ * @property {String|Number} width 输入框宽度，单位rpx，高等于宽（默认80）
+ * @property {Boolean} disabled-keyboard 禁止点击输入框唤起系统键盘（默认false）
+ * @event {Function} change 输入内容发生改变时触发，具体见官网说明
+ * @event {Function} finish 输入字符个数达maxlength值时触发，见官网说明
+ * @example <u-message-input mode="bottomLine"></u-message-input>
+ */
+const props = defineProps(MessageInputProps);
+
+const emit = defineEmits(['change', 'finish']);
+
+// 输入框实际值
+const valueModel = ref('');
+
+// 监听 value 变化，自动同步 valueModel，超出部分截掉
+watch(
+    () => props.value,
+    val => {
+        // 转为字符串
+        const strVal = String(val);
+        // 超出部分截掉
+        valueModel.value = strVal.substring(0, Number(props.maxlength));
+    },
+    { immediate: true }
+);
+
+// 用于显示字符
+const charArr = computed(() => valueModel.value.split(''));
+const charArrLength = computed(() => charArr.value.length);
+// 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
+const loopCharArr = computed(() => new Array(Number(props.maxlength)));
+
+/**
+ * 输入事件处理
+ * @param e input事件对象
+ */
+function getVal(e: any) {
+    const { value } = e.detail;
+    valueModel.value = value;
+    // 判断长度是否超出了maxlength值，理论上不会发生，因为input组件设置了maxlength属性值
+    if (String(value).length > Number(props.maxlength)) return;
+    // 未达到maxlength之前，发送change事件，达到后发送finish事件
+    emit('change', value);
+    if (String(value).length === Number(props.maxlength)) {
+        emit('finish', value);
+    }
+}
+</script>
+
+<style scoped lang="scss">
+@import '../../libs/css/style.components.scss';
+
+@keyframes breathe {
+    0% {
+        opacity: 0.3;
+    }
+
+    50% {
+        opacity: 1;
+    }
+
+    100% {
+        opacity: 0.3;
+    }
+}
+
+.u-char-box {
+    text-align: center;
+}
+
+.u-char-flex {
+    @include vue-flex;
+    justify-content: center;
+    flex-wrap: wrap;
+    position: relative;
+}
+
+.u-input {
+    position: absolute;
+    top: 0;
+    left: -100%;
+    width: 200%;
+    height: 100%;
+    text-align: left;
+    z-index: 9;
+    opacity: 0;
+    background: none;
+}
+
+.u-char-item {
+    position: relative;
+    width: 90rpx;
+    height: 90rpx;
+    margin: 10rpx 10rpx;
+    font-size: 60rpx;
+    font-weight: bold;
+    color: $u-main-color;
+    line-height: 90rpx;
+    @include vue-flex;
+    justify-content: center;
+    align-items: center;
+}
+
+.u-middle-line {
+    border: none;
+}
+
+.u-box {
+    box-sizing: border-box;
+    border: 2rpx solid var(--u-light-color);
+    border-radius: 6rpx;
+}
+
+.u-box-active {
+    overflow: hidden;
+    animation-timing-function: ease-in-out;
+    animation-duration: 1500ms;
+    animation-iteration-count: infinite;
+    animation-direction: alternate;
+    border: 2rpx solid $u-type-primary;
+}
+
+.u-middle-line-active {
+    background: $u-type-primary;
+}
+
+.u-breathe {
+    animation: breathe 2s infinite ease;
+}
+
+.u-placeholder-line {
+    /* #ifndef APP-NVUE */
+    display: none;
+    /* #endif */
+    position: absolute;
+    left: 50%;
+    top: 50%;
+    transform: translate(-50%, -50%);
+    width: 2rpx;
+    height: 40rpx;
+    background: var(--u-main-color);
+    animation: twinkling 1.5s infinite ease;
+}
+
+.u-animation-breathe {
+    animation-name: breathe;
+}
+
+.u-dot {
+    font-size: 34rpx;
+    line-height: 34rpx;
+}
+
+.u-middle-line {
+    height: 4px;
+    background: var(--u-bg-black);
+    width: 80%;
+    position: absolute;
+    border-radius: 2px;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+}
+
+.u-bottom-line-active {
+    background: $u-type-primary;
+}
+
+.u-bottom-line {
+    height: 4px;
+    background: var(--u-bg-black);
+    width: 80%;
+    position: absolute;
+    border-radius: 2px;
+    bottom: 0;
+    left: 50%;
+    transform: translate(-50%);
+}
+</style>