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- <template>
- <view class="u-input" :class="inputClass" :style="[wrapperStyle]">
- <view class="u-input__content">
- <view
- class="u-input__content__prefix-icon"
- v-if="prefixIcon || $slots.prefix"
- >
- <slot name="prefix">
- <u-icon
- :name="prefixIcon"
- size="18"
- :customStyle="prefixIconStyle"
- ></u-icon>
- </slot>
- </view>
- <view class="u-input__content__field-wrapper" @tap="clickHandler">
- <!-- 根据uni-app的input组件文档,H5和APP中只要声明了password参数(无论true还是false),type均失效,此时
- 为了防止type=number时,又存在password属性,type无效,此时需要设置password为undefined
- -->
- <input
- class="u-input__content__field-wrapper__field"
- :style="[inputStyle]"
- :type="type"
- :focus="focus"
- :cursor="cursor"
- :value="innerValue"
- :auto-blur="autoBlur"
- :disabled="disabled || readonly"
- :maxlength="maxlength"
- :placeholder="placeholder"
- :placeholder-style="placeholderStyle"
- :placeholder-class="placeholderClass"
- :confirm-type="confirmType"
- :confirm-hold="confirmHold"
- :hold-keyboard="holdKeyboard"
- :cursor-spacing="cursorSpacing"
- :adjust-position="adjustPosition"
- :selection-end="selectionEnd"
- :selection-start="selectionStart"
- :password="password || type === 'password' || false"
- :ignoreCompositionEvent="ignoreCompositionEvent"
- @input="onInput"
- @blur="onBlur"
- @focus="onFocus"
- @confirm="onConfirm"
- @keyboardheightchange="onkeyboardheightchange"
- />
- </view>
- <view
- class="u-input__content__clear"
- v-if="isShowClear"
- @tap="onClear"
- >
- <u-icon
- name="close"
- size="11"
- color="#ffffff"
- customStyle="line-height: 12px"
- ></u-icon>
- </view>
- <view
- class="u-input__content__subfix-icon"
- v-if="suffixIcon || $slots.suffix"
- >
- <slot name="suffix">
- <u-icon
- :name="suffixIcon"
- size="18"
- :customStyle="suffixIconStyle"
- ></u-icon>
- </slot>
- </view>
- </view>
- </view>
- </template>
- <script>
- import props from "./props.js";
- /**
- * Input 输入框
- * @description 此组件为一个输入框,默认没有边框和样式,是专门为配合表单组件u-form而设计的,利用它可以快速实现表单验证,输入内容,下拉选择等功能。
- * @tutorial https://uviewui.com/components/input.html
- * @property {String | Number} value 输入的值
- * @property {String} type 输入框类型,见上方说明 ( 默认 'text' )
- * @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,兼容性:微信小程序、百度小程序、字节跳动小程序、QQ小程序 ( 默认 false )
- * @property {Boolean} disabled 是否禁用输入框 ( 默认 false )
- * @property {String} disabledColor 禁用状态时的背景色( 默认 '#f5f7fa' )
- * @property {Boolean} clearable 是否显示清除控件 ( 默认 false )
- * @property {Boolean} password 是否密码类型 ( 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 -1 )
- * @property {String} placeholder 输入框为空时的占位符
- * @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 {Boolean} showWordLimit 是否显示输入字数统计,只在 type ="text"或type ="textarea"时有效 ( 默认 false )
- * @property {String} confirmType 设置右下角按钮的文字,兼容性详见uni-app文档 ( 默认 'done' )
- * @property {Boolean} confirmHold 点击键盘右下角按钮时是否保持键盘不收起,H5无效 ( 默认 false )
- * @property {Boolean} holdKeyboard focus时,点击页面的时候不收起键盘,微信小程序有效 ( 默认 false )
- * @property {Boolean} focus 自动获取焦点,在 H5 平台能否聚焦以及软键盘是否跟随弹出,取决于当前浏览器本身的实现。nvue 页面不支持,需使用组件的 focus()、blur() 方法控制焦点 ( 默认 false )
- * @property {Boolean} autoBlur 键盘收起时,是否自动失去焦点,目前仅App3.0.0+有效 ( 默认 false )
- * @property {Boolean} disableDefaultPadding 是否去掉 iOS 下的默认内边距,仅微信小程序,且type=textarea时有效 ( 默认 false )
- * @property {String | Number} cursor 指定focus时光标的位置( 默认 -1 )
- * @property {String | Number} cursorSpacing 输入框聚焦时底部与键盘的距离 ( 默认 30 )
- * @property {String | Number} selectionStart 光标起始位置,自动聚集时有效,需与selection-end搭配使用 ( 默认 -1 )
- * @property {String | Number} selectionEnd 光标结束位置,自动聚集时有效,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 {String} inputAlign 输入框内容对齐方式( 默认 'left' )
- * @property {String | Number} fontSize 输入框字体的大小 ( 默认 '15px' )
- * @property {String} color 输入框字体颜色 ( 默认 '#303133' )
- * @property {Function} formatter 内容式化函数
- * @property {String} prefixIcon 输入框前置图标
- * @property {String | Object} prefixIconStyle 前置图标样式,对象或字符串
- * @property {String} suffixIcon 输入框后置图标
- * @property {String | Object} suffixIconStyle 后置图标样式,对象或字符串
- * @property {String} border 边框类型,surround-四周边框,bottom-底部边框,none-无边框 ( 默认 'surround' )
- * @property {Boolean} readonly 是否只读,与disabled不同之处在于disabled会置灰组件,而readonly则不会 ( 默认 false )
- * @property {String} shape 输入框形状,circle-圆形,square-方形 ( 默认 'square' )
- * @property {Object} customStyle 定义需要用到的外部样式
- * @property {Boolean} ignoreCompositionEvent 是否忽略组件内对文本合成系统事件的处理。
- * @example <u-input v-model="value" :password="true" suffix-icon="lock-fill" />
- */
- export default {
- name: "u-input",
- mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
- data() {
- return {
- // 输入框的值
- innerValue: "",
- // 是否处于获得焦点状态
- focused: false,
- // value是否第一次变化,在watch中,由于加入immediate属性,会在第一次触发,此时不应该认为value发生了变化
- firstChange: true,
- // value绑定值的变化是由内部还是外部引起的
- changeFromInner: false,
- // 过滤处理方法
- innerFormatter: value => value
- };
- },
- watch: {
- value: {
- immediate: true,
- handler(newVal, oldVal) {
- this.innerValue = newVal;
- /* #ifdef H5 */
- // 在H5中,外部value变化后,修改input中的值,不会触发@input事件,此时手动调用值变化方法
- if (
- this.firstChange === false &&
- this.changeFromInner === false
- ) {
- this.valueChange();
- }
- /* #endif */
- this.firstChange = false;
- // 重置changeFromInner的值为false,标识下一次引起默认为外部引起的
- this.changeFromInner = false;
- },
- },
- },
- computed: {
- // 是否显示清除控件
- isShowClear() {
- const { clearable, readonly, focused, innerValue } = this;
- return !!clearable && !readonly && !!focused && innerValue !== "";
- },
- // 组件的类名
- inputClass() {
- let classes = [],
- { border, disabled, shape } = this;
- border === "surround" &&
- (classes = classes.concat(["u-border", "u-input--radius"]));
- classes.push(`u-input--${shape}`);
- border === "bottom" &&
- (classes = classes.concat([
- "u-border-bottom",
- "u-input--no-radius",
- ]));
- return classes.join(" ");
- },
- // 组件的样式
- wrapperStyle() {
- const style = {};
- // 禁用状态下,被背景色加上对应的样式
- if (this.disabled) {
- style.backgroundColor = this.disabledColor;
- }
- // 无边框时,去除内边距
- if (this.border === "none") {
- style.padding = "0";
- } else {
- // 由于uni-app的iOS开发者能力有限,导致需要分开写才有效
- style.paddingTop = "6px";
- style.paddingBottom = "6px";
- style.paddingLeft = "9px";
- style.paddingRight = "9px";
- }
- return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle));
- },
- // 输入框的样式
- inputStyle() {
- const style = {
- color: this.color,
- fontSize: uni.$u.addUnit(this.fontSize),
- textAlign: this.inputAlign
- };
- return style;
- },
- },
- methods: {
- // 在微信小程序中,不支持将函数当做props参数,故只能通过ref形式调用
- setFormatter(e) {
- this.innerFormatter = e
- },
- // 当键盘输入时,触发input事件
- onInput(e) {
- let { value = "" } = e.detail || {};
- // 格式化过滤方法
- const formatter = this.formatter || this.innerFormatter
- const formatValue = formatter(value)
- // 为了避免props的单向数据流特性,需要先将innerValue值设置为当前值,再在$nextTick中重新赋予设置后的值才有效
- this.innerValue = value
- this.$nextTick(() => {
- this.innerValue = formatValue;
- this.valueChange();
- })
- },
- // 输入框失去焦点时触发
- onBlur(event) {
- this.$emit("blur", event.detail.value);
- // H5端的blur会先于点击清除控件的点击click事件触发,导致focused
- // 瞬间为false,从而隐藏了清除控件而无法被点击到
- uni.$u.sleep(50).then(() => {
- this.focused = false;
- });
- // 尝试调用u-form的验证方法
- uni.$u.formValidate(this, "blur");
- },
- // 输入框聚焦时触发
- onFocus(event) {
- this.focused = true;
- this.$emit("focus");
- },
- // 点击完成按钮时触发
- onConfirm(event) {
- this.$emit("confirm", this.innerValue);
- },
- // 键盘高度发生变化的时候触发此事件
- // 兼容性:微信小程序2.7.0+、App 3.1.0+
- onkeyboardheightchange() {
- this.$emit("keyboardheightchange");
- },
- // 内容发生变化,进行处理
- valueChange() {
- const value = this.innerValue;
- this.$nextTick(() => {
- this.$emit("input", value);
- // 标识value值的变化是由内部引起的
- this.changeFromInner = true;
- this.$emit("change", value);
- // 尝试调用u-form的验证方法
- uni.$u.formValidate(this, "change");
- });
- },
- // 点击清除控件
- onClear() {
- this.innerValue = "";
- this.$nextTick(() => {
- this.valueChange();
- this.$emit("clear");
- });
- },
- /**
- * 在安卓nvue上,事件无法冒泡
- * 在某些时间,我们希望监听u-from-item的点击事件,此时会导致点击u-form-item内的u-input后
- * 无法触发u-form-item的点击事件,这里通过手动调用u-form-item的方法进行触发
- */
- clickHandler() {
- // #ifdef APP-NVUE
- if (uni.$u.os() === "android") {
- const formItem = uni.$u.$parent.call(this, "u-form-item");
- if (formItem) {
- formItem.clickHandler();
- }
- }
- // #endif
- },
- },
- };
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/components.scss";
- .u-input {
- @include flex(row);
- align-items: center;
- justify-content: space-between;
- flex: 1;
- &--radius,
- &--square {
- border-radius: 4px;
- }
- &--no-radius {
- border-radius: 0;
- }
- &--circle {
- border-radius: 100px;
- }
- &__content {
- flex: 1;
- @include flex(row);
- align-items: center;
- justify-content: space-between;
- &__field-wrapper {
- position: relative;
- @include flex(row);
- margin: 0;
- flex: 1;
-
- &__field {
- line-height: 26px;
- text-align: left;
- color: $u-main-color;
- height: 24px;
- font-size: 15px;
- flex: 1;
- }
- }
- &__clear {
- width: 20px;
- height: 20px;
- border-radius: 100px;
- background-color: #c6c7cb;
- @include flex(row);
- align-items: center;
- justify-content: center;
- transform: scale(0.82);
- margin-left: 4px;
- }
- &__subfix-icon {
- margin-left: 4px;
- }
- &__prefix-icon {
- margin-right: 4px;
- }
- }
- }
- </style>
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