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353 lines
14 KiB
353 lines
14 KiB
<template> |
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<view class="u-input" :class="inputClass" :style="[wrapperStyle]"> |
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<view class="u-input__content"> |
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<view |
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class="u-input__content__prefix-icon" |
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v-if="prefixIcon || $slots.prefix" |
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> |
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<slot name="prefix"> |
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<u-icon |
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:name="prefixIcon" |
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size="18" |
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:customStyle="prefixIconStyle" |
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></u-icon> |
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</slot> |
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</view> |
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<view class="u-input__content__field-wrapper" @tap="clickHandler"> |
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<!-- 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 |
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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 |
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--> |
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<input |
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class="u-input__content__field-wrapper__field" |
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:style="[inputStyle]" |
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:type="type" |
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:focus="focus" |
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:cursor="cursor" |
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:value="innerValue" |
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:auto-blur="autoBlur" |
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:disabled="disabled || readonly" |
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:maxlength="maxlength" |
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:placeholder="placeholder" |
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:placeholder-style="placeholderStyle" |
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:placeholder-class="placeholderClass" |
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:confirm-type="confirmType" |
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:confirm-hold="confirmHold" |
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:hold-keyboard="holdKeyboard" |
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:cursor-spacing="cursorSpacing" |
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:adjust-position="adjustPosition" |
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:selection-end="selectionEnd" |
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:selection-start="selectionStart" |
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:password="password || type === 'password' || undefined" |
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@input="onInput" |
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@blur="onBlur" |
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@focus="onFocus" |
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@confirm="onConfirm" |
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@keyboardheightchange="onkeyboardheightchange" |
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/> |
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</view> |
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<view |
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class="u-input__content__clear" |
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v-if="isShowClear" |
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@tap="onClear" |
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> |
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<u-icon |
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name="close" |
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size="11" |
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color="#ffffff" |
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customStyle="line-height: 12px" |
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></u-icon> |
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</view> |
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<view |
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class="u-input__content__subfix-icon" |
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v-if="suffixIcon || $slots.suffix" |
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> |
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<slot name="suffix"> |
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<u-icon |
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:name="suffixIcon" |
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size="18" |
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:customStyle="suffixIconStyle" |
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></u-icon> |
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</slot> |
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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 props from "./props.js"; |
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/** |
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* Input 输入框 |
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* @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。 |
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* @tutorial https://uviewui.com/components/input.html |
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* @property {String | Number} value 输入的值 |
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* @property {String} type 输入框类型,见上方说明 ( 默认 'text' ) |
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* @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 ) |
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* @property {Boolean} disabled 是否禁用输入框 ( 默认 false ) |
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* @property {String} disabledColor 禁用状态时的背景色( 默认 '#f5f7fa' ) |
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* @property {Boolean} clearable 是否显示清除控件 ( 默认 false ) |
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* @property {Boolean} password 是否密码类型 ( 默认 false ) |
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* @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 ) |
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* @property {String} placeholder 输入框为空时的占位符 |
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* @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' ) |
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* @property {String | Object} placeholderStyle 指定placeholder的样式,字符串/对象形式,如"color: red;" |
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* @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 ) |
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* @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' ) |
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* @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 ) |
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* @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 ) |
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* @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 ) |
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* @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 ) |
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* @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 ) |
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* @property {String | Number} cursor 指定focus时光标的位置( 默认 -1 ) |
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* @property {String | Number} cursorSpacing 输入框聚焦时底部与键盘的距离 ( 默认 30 ) |
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* @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 ) |
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* @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 ) |
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* @property {Boolean} adjustPosition 键盘弹起时,是否自动上推页面 ( 默认 true ) |
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* @property {String} inputAlign 输入框内容对齐方式( 默认 'left' ) |
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* @property {String | Number} fontSize 输入框字体的大小 ( 默认 '15px' ) |
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* @property {String} color 输入框字体颜色 ( 默认 '#303133' ) |
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* @property {Function} formatter 内容式化函数 |
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* @property {String} prefixIcon 输入框前置图标 |
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* @property {String | Object} prefixIconStyle 前置图标样式,对象或字符串 |
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* @property {String} suffixIcon 输入框后置图标 |
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* @property {String | Object} suffixIconStyle 后置图标样式,对象或字符串 |
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* @property {String} border 边框类型,surround-四周边框,bottom-底部边框,none-无边框 ( 默认 'surround' ) |
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* @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 ) |
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* @property {String} shape 输入框形状,circle-圆形,square-方形 ( 默认 'square' ) |
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* @property {Object} customStyle 定义需要用到的外部样式 |
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* |
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* @example <u-input v-model="value" :password="true" suffix-icon="lock-fill" /> |
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*/ |
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export default { |
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name: "u-input", |
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props], |
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data() { |
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return { |
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// 输入框的值 |
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innerValue: "", |
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// 是否处于获得焦点状态 |
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focused: false, |
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// 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 |
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firstChange: true, |
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// value绑定值的变化是由内部还是外部引起的 |
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changeFromInner: false, |
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// 过滤处理方法 |
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innerFormatter: value => value |
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}; |
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}, |
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watch: { |
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value: { |
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immediate: true, |
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handler(newVal, oldVal) { |
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this.innerValue = newVal; |
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/* #ifdef H5 */ |
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// 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 |
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if ( |
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this.firstChange === false && |
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this.changeFromInner === false |
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) { |
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this.valueChange(); |
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} |
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/* #endif */ |
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this.firstChange = false; |
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// 重置changeFromInner的值为false,标识下一次引起默认为外部引起的 |
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this.changeFromInner = false; |
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}, |
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}, |
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}, |
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computed: { |
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// 是否显示清除控件 |
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isShowClear() { |
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const { clearable, readonly, focused, innerValue } = this; |
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return !!clearable && !readonly && !!focused && innerValue !== ""; |
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}, |
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// 组件的类名 |
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inputClass() { |
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let classes = [], |
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{ border, disabled, shape } = this; |
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border === "surround" && |
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(classes = classes.concat(["u-border", "u-input--radius"])); |
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classes.push(`u-input--${shape}`); |
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border === "bottom" && |
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(classes = classes.concat([ |
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"u-border-bottom", |
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"u-input--no-radius", |
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])); |
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return classes.join(" "); |
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}, |
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// 组件的样式 |
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wrapperStyle() { |
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const style = {}; |
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// 禁用状态下,被背景色加上对应的样式 |
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if (this.disabled) { |
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style.backgroundColor = this.disabledColor; |
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} |
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// 无边框时,去除内边距 |
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if (this.border === "none") { |
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style.padding = "0"; |
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} else { |
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// 由于uni-app的iOS开发者能力有限,导致需要分开写才有效 |
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style.paddingTop = "6px"; |
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style.paddingBottom = "6px"; |
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style.paddingLeft = "9px"; |
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style.paddingRight = "9px"; |
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} |
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return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle)); |
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}, |
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// 输入框的样式 |
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inputStyle() { |
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const style = { |
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color: this.color, |
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fontSize: uni.$u.addUnit(this.fontSize), |
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textAlign: this.inputAlign |
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}; |
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return style; |
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}, |
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}, |
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methods: { |
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// 在微信小程序中,不支持将函数当做props参数,故只能通过ref形式调用 |
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setFormatter(e) { |
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this.innerFormatter = e |
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}, |
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// 当键盘输入时,触发input事件 |
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onInput(e) { |
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let { value = "" } = e.detail || {}; |
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// 格式化过滤方法 |
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const formatter = this.formatter || this.innerFormatter |
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const formatValue = formatter(value) |
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// 为了避免props的单向数据流特性,需要先将innerValue值设置为当前值,再在$nextTick中重新赋予设置后的值才有效 |
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this.innerValue = value |
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this.$nextTick(() => { |
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this.innerValue = formatValue; |
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this.valueChange(); |
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}) |
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}, |
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// 输入框失去焦点时触发 |
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onBlur(event) { |
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this.$emit("blur", event.detail.value); |
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// H5端的blur会先于点击清除控件的点击click事件触发,导致focused |
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// 瞬间为false,从而隐藏了清除控件而无法被点击到 |
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uni.$u.sleep(50).then(() => { |
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this.focused = false; |
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}); |
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// 尝试调用u-form的验证方法 |
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uni.$u.formValidate(this, "blur"); |
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}, |
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// 输入框聚焦时触发 |
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onFocus(event) { |
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this.focused = true; |
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this.$emit("focus"); |
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}, |
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// 点击完成按钮时触发 |
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onConfirm(event) { |
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this.$emit("confirm", this.innerValue); |
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}, |
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// 键盘高度发生变化的时候触发此事件 |
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// 兼容性:微信小程序2.7.0+、App 3.1.0+ |
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onkeyboardheightchange() { |
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this.$emit("keyboardheightchange"); |
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}, |
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// 内容发生变化,进行处理 |
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valueChange() { |
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const value = this.innerValue; |
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this.$nextTick(() => { |
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this.$emit("input", value); |
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// 标识value值的变化是由内部引起的 |
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this.changeFromInner = true; |
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this.$emit("change", value); |
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// 尝试调用u-form的验证方法 |
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uni.$u.formValidate(this, "change"); |
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}); |
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}, |
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// 点击清除控件 |
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onClear() { |
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this.innerValue = ""; |
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this.$nextTick(() => { |
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this.valueChange(); |
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this.$emit("clear"); |
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}); |
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}, |
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/** |
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* 在安卓nvue上,事件无法冒泡 |
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* 在某些时间,我们希望监听u-from-item的点击事件,此时会导致点击u-form-item内的u-input后 |
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* 无法触发u-form-item的点击事件,这里通过手动调用u-form-item的方法进行触发 |
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*/ |
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clickHandler() { |
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// #ifdef APP-NVUE |
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if (uni.$u.os() === "android") { |
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const formItem = uni.$u.$parent.call(this, "u-form-item"); |
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if (formItem) { |
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formItem.clickHandler(); |
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} |
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} |
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// #endif |
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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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@import "../../libs/css/components.scss"; |
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.u-input { |
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@include flex(row); |
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align-items: center; |
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justify-content: space-between; |
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flex: 1; |
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&--radius, |
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&--square { |
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border-radius: 4px; |
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} |
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&--no-radius { |
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border-radius: 0; |
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} |
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&--circle { |
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border-radius: 100px; |
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} |
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&__content { |
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flex: 1; |
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@include flex(row); |
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align-items: center; |
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justify-content: space-between; |
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&__field-wrapper { |
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position: relative; |
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@include flex(row); |
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margin: 0; |
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flex: 1; |
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&__field { |
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line-height: 26px; |
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text-align: left; |
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color: $u-main-color; |
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height: 24px; |
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font-size: 15px; |
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flex: 1; |
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} |
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} |
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&__clear { |
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width: 20px; |
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height: 20px; |
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border-radius: 100px; |
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background-color: #c6c7cb; |
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@include flex(row); |
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align-items: center; |
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justify-content: center; |
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transform: scale(0.82); |
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margin-left: 4px; |
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} |
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&__subfix-icon { |
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margin-left: 4px; |
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} |
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&__prefix-icon { |
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margin-right: 4px; |
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} |
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} |
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} |
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</style>
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