| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353 | <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' || undefined"            	    @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 * * @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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