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461 lines
13 KiB
461 lines
13 KiB
10 months ago
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<template>
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<view
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class="u-input"
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:class="{
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'u-input--border': border,
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'u-input--error': validateState
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}"
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:style="{
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padding: padding ? padding : `0 ${border ? 20 : 0}rpx`,
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borderColor: borderColor,
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textAlign: inputAlignCom,
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backgroundColor: backgroundColor,
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}"
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@tap.stop="inputClick"
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>
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<textarea
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v-if="type == 'textarea'"
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class="u-input__input u-input__textarea"
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:style="[getStyle]"
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:value="defaultValue"
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:placeholder="placeholder"
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:placeholderStyle="placeholderStyle"
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:disabled="disabled"
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:maxlength="inputMaxlength"
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:fixed="fixed"
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:focus="focus"
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:autoHeight="autoHeight"
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:selection-end="uSelectionEnd"
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:selection-start="uSelectionStart"
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:cursor-spacing="getCursorSpacing"
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:show-confirm-bar="showConfirmbar"
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:adjust-position="adjustPosition"
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@input="handleInput"
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@blur="handleBlur"
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@focus="onFocus"
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@confirm="onConfirm"
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/>
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<input
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v-else
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class="u-input__input"
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:type="type == 'password' ? 'text' : type"
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:style="[getStyle]"
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:value="defaultValue"
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:password="type == 'password' && !showPassword"
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:placeholder="placeholder"
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:placeholderStyle="placeholderStyle"
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:disabled="disabled || type === 'select'"
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:maxlength="inputMaxlength"
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:focus="focus"
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:confirmType="confirmType"
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:cursor-spacing="getCursorSpacing"
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:selection-end="uSelectionEnd"
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:selection-start="uSelectionStart"
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:show-confirm-bar="showConfirmbar"
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:adjust-position="adjustPosition"
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@focus="onFocus"
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@blur="handleBlur"
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@input="handleInput"
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@confirm="onConfirm"
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/>
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<view class="u-input__right-icon u-flex">
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<view
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class="u-input__right-icon__clear u-input__right-icon__item"
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@tap="onClear"
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v-if="clearableCom && valueCom != '' && focused"
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>
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<u-icon size="32" name="close-circle-fill" color="#c0c4cc" />
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</view>
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<view
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class="u-input__right-icon__clear u-input__right-icon__item"
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v-if="passwordIcon && type == 'password'"
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>
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<u-icon
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size="32"
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:name="!showPassword ? 'eye' : 'eye-fill'"
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color="#c0c4cc"
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@click="showPassword = !showPassword"
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/>
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</view>
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<view
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class="u-input__right-icon--select u-input__right-icon__item"
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v-if="type == 'select'"
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:class="{
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'u-input__right-icon--select--reverse': selectOpen
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}"
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>
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<u-icon name="arrow-down-fill" size="26" color="#c0c4cc"></u-icon>
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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 Emitter from "../../libs/util/emitter.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 http://uviewui.com/components/input.html
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* @property {String} type 模式选择，见官网说明
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* @property {Boolean} clearable 是否显示右侧的清除图标(默认true)
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* @property {} v-model 用于双向绑定输入框的值
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* @property {String} input-align 输入框文字的对齐方式(默认left)
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* @property {String} placeholder placeholder显示值(默认 '请输入内容')
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* @property {Boolean} disabled 是否禁用输入框(默认false)
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* @property {String Number} maxlength 输入框的最大可输入长度(默认140)
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* @property {String Number} selection-start 光标起始位置，自动聚焦时有效，需与selection-end搭配使用（默认-1）
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* @property {String Number} maxlength 光标结束位置，自动聚焦时有效，需与selection-start搭配使用（默认-1）
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* @property {String Number} cursor-spacing 指定光标与键盘的距离，单位px(默认0)
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* @property {String} placeholderStyle placeholder的样式，字符串形式，如"color: red;"(默认 "color: #c0c4cc;")
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* @property {String} confirm-type 设置键盘右下角按钮的文字，仅在type为text时生效(默认done)
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* @property {Object} custom-style 自定义输入框的样式，对象形式
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* @property {Boolean} focus 是否自动获得焦点(默认false)
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* @property {Boolean} fixed 如果type为textarea，且在一个"position:fixed"的区域，需要指明为true(默认false)
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* @property {Boolean} password-icon type为password时，是否显示右侧的密码查看图标(默认true)
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* @property {Boolean} border 是否显示边框(默认false)
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* @property {String} border-color 输入框的边框颜色(默认#dcdfe6)
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* @property {Boolean} auto-height 是否自动增高输入区域，type为textarea时有效(默认true)
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* @property {String Number} height 高度，单位rpx(text类型时为70，textarea时为100)
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* @example <u-input v-model="value" :type="type" :border="border" />
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*/
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export default {
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name: "u-input",
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emits: ["update:modelValue", "input", "change", "blur", "focus", "click", "touchstart"],
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mixins: [Emitter],
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props: {
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value: {
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type: [String, Number],
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default: ""
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},
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modelValue: {
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type: [String, Number],
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default: ""
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},
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// 输入框的类型，textarea，text，number
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type: {
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type: String,
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default: "text"
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},
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inputAlign: {
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type: String,
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default: ""
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},
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placeholder: {
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type: String,
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default: "请输入内容"
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},
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disabled: {
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type: Boolean,
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default: false
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},
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maxlength: {
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type: [Number, String],
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default: 140
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},
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placeholderStyle: {
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type: String,
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default: "color: #c0c4cc;"
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},
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confirmType: {
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type: String,
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default: "done"
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},
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// 输入框的自定义样式
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customStyle: {
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type: Object,
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default() {
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return {};
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}
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},
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// 如果 textarea 是在一个 position:fixed 的区域，需要显示指定属性 fixed 为 true
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fixed: {
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type: Boolean,
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default: false
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},
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// 是否自动获得焦点
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focus: {
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type: Boolean,
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default: false
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},
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// 密码类型时，是否显示右侧的密码图标
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passwordIcon: {
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type: Boolean,
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default: true
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},
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// input|textarea是否显示边框
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border: {
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type: Boolean,
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default: false
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},
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// 输入框的边框颜色
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borderColor: {
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type: String,
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default: "#dcdfe6"
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},
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autoHeight: {
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type: Boolean,
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default: true
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},
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// type=select时，旋转右侧的图标，标识当前处于打开还是关闭select的状态
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// open-打开，close-关闭
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selectOpen: {
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type: Boolean,
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default: false
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},
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// 高度，单位rpx
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height: {
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type: [Number, String],
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default: ""
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},
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// 是否可清空
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clearable: {
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type: [Boolean, String],
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},
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// 指定光标与键盘的距离，单位 px
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cursorSpacing: {
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type: [Number, String],
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default: 0
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},
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// 光标起始位置，自动聚焦时有效，需与selection-end搭配使用
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selectionStart: {
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type: [Number, String],
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default: -1
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},
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// 光标结束位置，自动聚焦时有效，需与selection-start搭配使用
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selectionEnd: {
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type: [Number, String],
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default: -1
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},
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// 是否自动去除两端的空格
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trim: {
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type: Boolean,
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default: true
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},
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// 是否显示键盘上方带有”完成“按钮那一栏
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showConfirmbar: {
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type: Boolean,
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default: true
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},
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// 弹出键盘时是否自动调节高度，uni-app默认值是true
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adjustPosition: {
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type: Boolean,
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default: true
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},
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// input的背景色
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backgroundColor: {
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type: String,
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},
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// input的padding
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padding: {
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type: String,
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},
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},
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data() {
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return {
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defaultValue: "",
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inputHeight: 70, // input的高度
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textareaHeight: 100, // textarea的高度
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validateState: false, // 当前input的验证状态，用于错误时，边框是否改为红色
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focused: false, // 当前是否处于获得焦点的状态
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showPassword: false, // 是否预览密码
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lastValue: "" ,// 用于头条小程序，判断@input中，前后的值是否发生了变化，因为头条中文下，按下键没有输入内容，也会触发@input时间
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uForm:{
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inputAlign: "",
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clearable: ""
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}
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};
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},
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watch: {
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valueCom(nVal, oVal) {
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this.defaultValue = nVal;
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// 当值发生变化，且为select类型时(此时input被设置为disabled，不会触发@input事件)，模拟触发@input事件
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if (nVal != oVal && this.type == "select")
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this.handleInput({
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detail: {
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value: nVal
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}
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});
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}
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},
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computed: {
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valueCom() {
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// #ifndef VUE3
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return this.value;
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// #endif
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// #ifdef VUE3
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return this.modelValue;
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// #endif
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},
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inputAlignCom(){
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return this.inputAlign || this.uForm.inputAlign || "left";
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},
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clearableCom(){
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if (typeof this.clearable == "boolean") return this.clearable;
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if (typeof this.uForm.clearable == "boolean") return this.uForm.clearable;
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return true;
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},
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// 因为uniapp的input组件的maxlength组件必须要数值，这里转为数值，给用户可以传入字符串数值
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inputMaxlength() {
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return Number(this.maxlength);
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},
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getStyle() {
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let style = {};
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// 如果没有自定义高度，就根据type为input还是textare来分配一个默认的高度
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style.minHeight = this.height
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? this.height + "rpx"
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: this.type == "textarea"
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? this.textareaHeight + "rpx"
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: this.inputHeight + "rpx";
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style = Object.assign(style, this.customStyle);
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return style;
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},
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//
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getCursorSpacing() {
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return Number(this.cursorSpacing);
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},
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// 光标起始位置
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uSelectionStart() {
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return String(this.selectionStart);
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},
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// 光标结束位置
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uSelectionEnd() {
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return String(this.selectionEnd);
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}
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},
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created() {
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// 监听u-form-item发出的错误事件，将输入框边框变红色
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// #ifndef VUE3
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this.$on("onFormItemError", this.onFormItemError);
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// #endif
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this.defaultValue = this.valueCom;
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},
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mounted() {
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let parent = this.$u.$parent.call(this, 'u-form');
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if (parent) {
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Object.keys(this.uForm).map(key => {
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this.uForm[key] = parent[key];
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});
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}
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},
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methods: {
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/**
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* change 事件
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* @param event
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*/
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handleInput(event) {
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let value = event.detail.value;
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// 判断是否去除空格
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if (this.trim) value = this.$u.trim(value);
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// vue 原生的方法 return 出去
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this.$emit("input", value);
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this.$emit("update:modelValue", value);
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// 当前model 赋值
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this.defaultValue = value;
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// 过一个生命周期再发送事件给u-form-item，否则this.$emit('input')更新了父组件的值，但是微信小程序上
|
||
|
|
// 尚未更新到u-form-item，导致获取的值为空，从而校验混论
|
||
|
|
// 这里不能延时时间太短，或者使用this.$nextTick，否则在头条上，会造成混乱
|
||
|
|
setTimeout(() => {
|
||
|
|
// 头条小程序由于自身bug，导致中文下，每按下一个键(尚未完成输入)，都会触发一次@input，导致错误，这里进行判断处理
|
||
|
|
// #ifdef MP-TOUTIAO
|
||
|
|
if (this.$u.trim(value) == this.lastValue) return;
|
||
|
|
this.lastValue = value;
|
||
|
|
// #endif
|
||
|
|
// 将当前的值发送到 u-form-item 进行校验
|
||
|
|
this.dispatch("u-form-item", "onFieldChange", value);
|
||
|
|
}, 40);
|
||
|
|
},
|
||
|
|
/**
|
||
|
|
* blur 事件
|
||
|
|
* @param event
|
||
|
|
*/
|
||
|
|
handleBlur(event) {
|
||
|
|
// 最开始使用的是监听图标@touchstart事件，自从hx2.8.4后，此方法在微信小程序出错
|
||
|
|
// 这里改为监听点击事件，手点击清除图标时，同时也发生了@blur事件，导致图标消失而无法点击，这里做一个延时
|
||
|
|
setTimeout(() => {
|
||
|
|
this.focused = false;
|
||
|
|
}, 100);
|
||
|
|
// vue 原生的方法 return 出去
|
||
|
|
this.$emit("blur", event.detail.value);
|
||
|
|
setTimeout(() => {
|
||
|
|
// 头条小程序由于自身bug，导致中文下，每按下一个键(尚未完成输入)，都会触发一次@input，导致错误，这里进行判断处理
|
||
|
|
// #ifdef MP-TOUTIAO
|
||
|
|
if (this.$u.trim(value) == this.lastValue) return;
|
||
|
|
this.lastValue = value;
|
||
|
|
// #endif
|
||
|
|
// 将当前的值发送到 u-form-item 进行校验
|
||
|
|
this.dispatch("u-form-item", "onFieldBlur", event.detail.value);
|
||
|
|
}, 40);
|
||
|
|
},
|
||
|
|
onFormItemError(status) {
|
||
|
|
this.validateState = status;
|
||
|
|
},
|
||
|
|
onFocus(event) {
|
||
|
|
this.focused = true;
|
||
|
|
this.$emit("focus");
|
||
|
|
},
|
||
|
|
onConfirm(e) {
|
||
|
|
this.$emit("confirm", e.detail.value);
|
||
|
|
},
|
||
|
|
onClear(event) {
|
||
|
|
this.$emit("input", "");
|
||
|
|
this.$emit("update:modelValue", "");
|
||
|
|
},
|
||
|
|
inputClick() {
|
||
|
|
this.$emit("click");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<style lang="scss" scoped>
|
||
|
|
@import "../../libs/css/style.components.scss";
|
||
|
|
|
||
|
|
.u-input {
|
||
|
|
position: relative;
|
||
|
|
flex: 1;
|
||
|
|
@include vue-flex;
|
||
|
|
|
||
|
|
&__input {
|
||
|
|
//height: $u-form-item-height;
|
||
|
|
font-size: 28rpx;
|
||
|
|
color: $u-main-color;
|
||
|
|
flex: 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
&__textarea {
|
||
|
|
width: auto;
|
||
|
|
font-size: 28rpx;
|
||
|
|
color: $u-main-color;
|
||
|
|
padding: 10rpx 0;
|
||
|
|
line-height: normal;
|
||
|
|
flex: 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
&--border {
|
||
|
|
border-radius: 6rpx;
|
||
|
|
border-radius: 4px;
|
||
|
|
border: 1px solid $u-form-item-border-color;
|
||
|
|
}
|
||
|
|
|
||
|
|
&--error {
|
||
|
|
border-color: $u-type-error !important;
|
||
|
|
}
|
||
|
|
|
||
|
|
&__right-icon {
|
||
|
|
&__item {
|
||
|
|
margin-left: 10rpx;
|
||
|
|
}
|
||
|
|
|
||
|
|
&--select {
|
||
|
|
transition: transform 0.4s;
|
||
|
|
|
||
|
|
&--reverse {
|
||
|
|
transform: rotate(-180deg);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</style>
|