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<template>
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<view class="u-field" :class="{'u-border-top': borderTop, 'u-border-bottom': borderBottom }">
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<view class="u-field-inner" :class="[type == 'textarea' ? 'u-textarea-inner' : '', 'u-label-postion-' + labelPosition]">
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<view class="u-label" :class="[required ? 'u-required' : '']" :style="{
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justifyContent: justifyContent,
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flex: labelPosition == 'left' ? `0 0 ${labelWidth}rpx` : '1'
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}">
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<view class="u-icon-wrap" v-if="icon">
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<u-icon size="32" :custom-style="iconStyle" :name="icon" :color="iconColor" class="u-icon"></u-icon>
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</view>
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<slot name="icon"></slot>
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<text class="u-label-text" :class="[this.$slots.icon || icon ? 'u-label-left-gap' : '']">{{ label }}</text>
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</view>
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<view class="fild-body">
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<view class="u-flex-1 u-flex" :style="[inputWrapStyle]">
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<textarea v-if="type == 'textarea'" class="u-flex-1 u-textarea-class" :style="[fieldStyle]" :value="value"
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:placeholder="placeholder" :placeholderStyle="placeholderStyle" :disabled="disabled" :maxlength="inputMaxlength"
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:focus="focus" :autoHeight="autoHeight" :fixed="fixed" @input="onInput" @blur="onBlur" @focus="onFocus" @confirm="onConfirm"
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@tap="fieldClick" />
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<input
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v-else
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:style="[fieldStyle]"
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:type="type"
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class="u-flex-1 u-field__input-wrap"
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:value="value"
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:password="password || this.type === 'password'"
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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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:focus="focus"
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:confirmType="confirmType"
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@focus="onFocus"
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@blur="onBlur"
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@input="onInput"
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@confirm="onConfirm"
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@tap="fieldClick"
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/>
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</view>
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<u-icon :size="clearSize" v-if="clearable && value != '' && focused" name="close-circle-fill" color="#c0c4cc" class="u-clear-icon" @click="onClear"/>
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<view class="u-button-wrap"><slot name="right" /></view>
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<u-icon v-if="rightIcon" @click="rightIconClick" :name="rightIcon" color="#c0c4cc" :style="[rightIconStyle]" size="26" class="u-arror-right" />
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</view>
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</view>
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<view v-if="errorMessage !== false && errorMessage != ''" class="u-error-message" :style="{
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paddingLeft: labelWidth + 'rpx'
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}">{{ errorMessage }}</view>
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</view>
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</template>
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<script>
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/**
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* field 输入框
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* @description 借助此组件，可以实现表单的输入， 有"text"和"textarea"类型的，此外，借助uView的picker和actionSheet组件可以快速实现上拉菜单，时间，地区选择等， 为表单解决方案的利器。
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* @tutorial https://www.uviewui.com/components/field.html
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* @property {String} type 输入框的类型（默认text）
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* @property {String} icon label左边的图标，限uView的图标名称
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* @property {Object} icon-style 左边图标的样式，对象形式
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* @property {Boolean} right-icon 输入框右边的图标名称，限uView的图标名称（默认false）
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* @property {Boolean} required 是否必填，左边您显示红色"*"号（默认false）
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* @property {String} label 输入框左边的文字提示
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* @property {Boolean} password 是否密码输入方式(用点替换文字)，type为text时有效（默认false）
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* @property {Boolean} clearable 是否显示右侧清空内容的图标控件(输入框有内容，且获得焦点时才显示)，点击可清空输入框内容（默认true）
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* @property {Number String} label-width label的宽度，单位rpx（默认130）
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* @property {String} label-align label的文字对齐方式（默认left）
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* @property {Object} field-style 自定义输入框的样式，对象形式
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* @property {Number | String} clear-size 清除图标的大小，单位rpx（默认30）
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* @property {String} input-align 输入框内容对齐方式（默认left）
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* @property {Boolean} border-bottom 是否显示field的下边框（默认true）
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* @property {Boolean} border-top 是否显示field的上边框（默认false）
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* @property {String} icon-color 左边通过icon配置的图标的颜色（默认#606266）
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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 Boolean} error-message 显示的错误提示内容，如果为空字符串或者false，则不显示错误信息
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* @property {String} placeholder 输入框的提示文字
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* @property {String} placeholder-style placeholder的样式(内联样式，字符串)，如"color: #ddd"
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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} disabled 是否不可输入（默认false）
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* @property {Number String} maxlength 最大输入长度，设置为 -1 的时候不限制最大长度（默认140）
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* @property {String} confirm-type 设置键盘右下角按钮的文字，仅在type="text"时生效（默认done）
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* @event {Function} input 输入框内容发生变化时触发
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* @event {Function} focus 输入框获得焦点时触发
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* @event {Function} blur 输入框失去焦点时触发
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* @event {Function} confirm 点击完成按钮时触发
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* @event {Function} right-icon-click 通过right-icon生成的图标被点击时触发
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* @event {Function} click 输入框被点击或者通过right-icon生成的图标被点击时触发，这样设计是考虑到传递右边的图标，一般都为需要弹出"picker"等操作时的场景，点击倒三角图标，理应发出此事件，见上方说明
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* @example <u-field v-model="mobile" label="手机号" required :error-message="errorMessage"></u-field>
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*/
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export default {
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name:"u-field",
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props: {
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icon: String,
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rightIcon: String,
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// arrowDirection: {
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// type: String,
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// default: 'right'
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// },
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required: Boolean,
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label: String,
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password: Boolean,
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clearable: {
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type: Boolean,
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default: true
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},
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// 左边标题的宽度单位rpx
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labelWidth: {
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type: [Number, String],
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default: 130
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},
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// 对齐方式，left|center|right
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labelAlign: {
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type: String,
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default: 'left'
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},
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inputAlign: {
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type: String,
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default: 'left'
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},
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iconColor: {
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type: String,
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default: '#606266'
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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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errorMessage: {
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type: [String, Boolean],
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default: ''
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},
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placeholder: String,
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placeholderStyle: String,
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focus: Boolean,
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fixed: Boolean,
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value: [Number, String],
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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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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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confirmType: {
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type: String,
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default: 'done'
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},
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// lable的位置，可选为 left-左边，top-上边
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labelPosition: {
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type: String,
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default: 'left'
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},
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// 输入框的自定义样式
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fieldStyle: {
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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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// 清除按钮的大小
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clearSize: {
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type: [Number, String],
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default: 30
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},
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// lable左边的图标样式，对象形式
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iconStyle: {
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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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// 是否显示上边框
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borderTop: {
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type: Boolean,
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default: false
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},
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// 是否显示下边框
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borderBottom: {
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type: Boolean,
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default: true
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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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},
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data() {
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return {
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focused: false,
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itemIndex: 0,
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};
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},
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computed: {
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inputWrapStyle() {
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let style = {};
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style.textAlign = this.inputAlign;
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// 判断lable的位置，如果是left的话，让input左边两边有间隙
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if(this.labelPosition == 'left') {
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style.margin = `0 8rpx`;
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} else {
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// 如果lable是top的，input的左边就没必要有间隙了
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style.marginRight = `8rpx`;
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}
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return style;
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},
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rightIconStyle() {
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let style = {};
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if (this.arrowDirection == 'top') style.transform = 'roate(-90deg)';
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if (this.arrowDirection == 'bottom') style.transform = 'roate(90deg)';
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else style.transform = 'roate(0deg)';
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return style;
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},
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labelStyle() {
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let style = {};
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if(this.labelAlign == 'left') style.justifyContent = 'flext-start';
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if(this.labelAlign == 'center') style.justifyContent = 'center';
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if(this.labelAlign == 'right') style.justifyContent = 'flext-end';
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return style;
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},
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// uni不支持在computed中写style.justifyContent = 'center'的形式，故用此方法
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justifyContent() {
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if(this.labelAlign == 'left') return 'flex-start';
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if(this.labelAlign == 'center') return 'center';
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if(this.labelAlign == 'right') return 'flex-end';
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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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// label的位置
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fieldInnerStyle() {
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let style = {};
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if(this.labelPosition == 'left') {
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style.flexDirection = 'row';
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} else {
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style.flexDirection = 'column';
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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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onInput(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.$u.trim(value);
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this.$emit('input', value);
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},
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onFocus(event) {
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this.focused = true;
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this.$emit('focus', event);
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},
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onBlur(event) {
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// 最开始使用的是监听图标@touchstart事件，自从hx2.8.4后，此方法在微信小程序出错
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// 这里改为监听点击事件，手点击清除图标时，同时也发生了@blur事件，导致图标消失而无法点击，这里做一个延时
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setTimeout(() => {
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this.focused = false;
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}, 100)
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this.$emit('blur', event);
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},
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onConfirm(e) {
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this.$emit('confirm', e.detail.value);
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},
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onClear(event) {
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this.$emit('input', '');
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},
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rightIconClick() {
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this.$emit('right-icon-click');
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this.$emit('click');
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},
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fieldClick() {
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this.$emit('click');
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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/style.components.scss";
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.u-field {
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font-size: 28rpx;
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padding: 20rpx 28rpx;
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text-align: left;
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position: relative;
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color: $u-main-color;
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}
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.u-field-inner {
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@include vue-flex;
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align-items: center;
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}
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.u-textarea-inner {
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align-items: flex-start;
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}
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.u-textarea-class {
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min-height: 96rpx;
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width: auto;
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font-size: 28rpx;
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}
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.fild-body {
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@include vue-flex;
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flex: 1;
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align-items: center;
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}
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.u-arror-right {
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margin-left: 8rpx;
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}
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.u-label-text {
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/* #ifndef APP-NVUE */
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display: inline-flex;
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/* #endif */
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}
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.u-label-left-gap {
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margin-left: 6rpx;
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}
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.u-label-postion-top {
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flex-direction: column;
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align-items: flex-start;
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}
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.u-label {
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width: 130rpx;
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flex: 1 1 130rpx;
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text-align: left;
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position: relative;
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@include vue-flex;
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align-items: center;
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}
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.u-required::before {
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content: '*';
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position: absolute;
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left: -16rpx;
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font-size: 14px;
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color: $u-type-error;
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height: 9px;
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line-height: 1;
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}
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.u-field__input-wrap {
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position: relative;
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overflow: hidden;
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font-size: 28rpx;
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height: 48rpx;
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flex: 1;
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width: auto;
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}
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.u-clear-icon {
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@include vue-flex;
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align-items: center;
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}
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.u-error-message {
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color: $u-type-error;
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font-size: 26rpx;
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text-align: left;
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}
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.placeholder-style {
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color: rgb(150, 151, 153);
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}
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.u-input-class {
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font-size: 28rpx;
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}
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.u-button-wrap {
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margin-left: 8rpx;
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}
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</style>
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