355 lines
15 KiB
Vue
355 lines
15 KiB
Vue
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<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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:ignoreCompositionEvent="ignoreCompositionEvent"
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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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* @property {Boolean} ignoreCompositionEvent 是否忽略组件内对文本合成系统事件的处理。
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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;
|
|||
|
|
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>
|