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<template>
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<view
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class="u-search"
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@tap="clickHandler"
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:style="[{
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margin: margin,
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}, addStyle(customStyle)]"
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>
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<view
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class="u-search__content"
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:style="{
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backgroundColor: bgColor,
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borderRadius: shape == 'round' ? '100px' : '4px',
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borderColor: borderColor,
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}"
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>
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<template v-if="$slots.label || label !== null">
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<slot name="label">
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<text class="u-search__content__label">{{ label }}</text>
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</slot>
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</template>
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<view class="u-search__content__icon">
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<u-icon
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@tap="clickIcon"
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:size="searchIconSize"
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:name="searchIcon"
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:color="searchIconColor ? searchIconColor : color"
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></u-icon>
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</view>
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<input
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confirm-type="search"
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@blur="blur"
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:value="keyword"
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@confirm="search"
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@input="inputChange"
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:disabled="disabled"
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@focus="getFocus"
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:focus="focus"
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:maxlength="maxlength"
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:adjust-position="adjustPosition"
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:auto-blur="autoBlur"
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placeholder-class="u-search__content__input--placeholder"
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:placeholder="placeholder"
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:placeholder-style="`color: ${placeholderColor}`"
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class="u-search__content__input"
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type="text"
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:style="[{
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textAlign: inputAlign,
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color: color,
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backgroundColor: bgColor,
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height: addUnit(height)
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}, inputStyle]"
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/>
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<view
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class="u-search__content__icon u-search__content__close"
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v-if="keyword && clearabled && focused"
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@click="clear"
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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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<text
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:style="[actionStyle]"
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class="u-search__action"
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:class="[(showActionBtn || show) && 'u-search__action--active']"
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@tap.stop.prevent="custom"
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>{{ actionText }}</text>
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</view>
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</template>
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<script>
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import { props } from './props';
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import { mpMixin } from '../../libs/mixin/mpMixin';
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import { mixin } from '../../libs/mixin/mixin';
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import { addUnit, addStyle } from '../../libs/function/index';
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/**
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* search 搜索框
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* @description 搜索组件，集成了常见搜索框所需功能，用户可以一键引入，开箱即用。
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* @tutorial https://ijry.github.io/uview-plus/components/search.html
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* @property {String} shape 搜索框形状，round-圆形，square-方形（默认 'round' ）
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* @property {String} bgColor 搜索框背景颜色（默认 '#f2f2f2' ）
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* @property {String} placeholder 占位文字内容（默认 '请输入关键字' ）
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* @property {Boolean} clearabled 是否启用清除控件（默认 true ）
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* @property {Boolean} focus 是否自动获得焦点（默认 false ）
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* @property {Boolean} showAction 是否显示右侧控件（默认 true ）
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* @property {Object} actionStyle 右侧控件的样式，对象形式
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* @property {String} actionText 右侧控件文字（默认 '搜索' ）
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* @property {String} inputAlign 输入框内容水平对齐方式 （默认 'left' ）
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* @property {Object} inputStyle 自定义输入框样式，对象形式
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* @property {Boolean} disabled 是否启用输入框（默认 false ）
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* @property {String} borderColor 边框颜色，配置了颜色，才会有边框 (默认 'transparent' )
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* @property {String} searchIconColor 搜索图标的颜色，默认同输入框字体颜色 (默认 '#909399' )
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* @property {Number | String} searchIconSize 搜索图标的字体，默认22
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* @property {String} color 输入框字体颜色（默认 '#606266' ）
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* @property {String} placeholderColor placeholder的颜色（默认 '#909399' ）
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* @property {String} searchIcon 输入框左边的图标，可以为uView图标名称或图片路径 (默认 'search' )
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* @property {String} margin 组件与其他上下左右元素之间的距离，带单位的字符串形式，如"30px" (默认 '0' )
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* @property {Boolean} animation 是否开启动画，见上方说明（默认 false ）
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* @property {String} value 输入框初始值
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* @property {String | Number} maxlength 输入框最大能输入的长度，-1为不限制长度 (默认 '-1' )
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* @property {String | Number} height 输入框高度，单位px（默认 64 ）
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* @property {String | Number} label 搜索框左边显示内容
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* @property {Boolean} adjustPosition 键盘弹起时，是否自动上推页面
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* @property {Boolean} autoBlur 键盘收起时，是否自动失去焦点
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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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* @event {Function} change 输入框内容发生变化时触发
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* @event {Function} search 用户确定搜索时触发，用户按回车键，或者手机键盘右下角的"搜索"键时触发
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* @event {Function} custom 用户点击右侧控件时触发
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* @event {Function} clear 用户点击清除按钮时触发
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* @example <u-search placeholder="日照香炉生紫烟" v-model="keyword"></u-search>
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*/
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export default {
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name: "u-search",
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mixins: [mpMixin, mixin, props],
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data() {
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return {
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keyword: '',
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showClear: false, // 是否显示右边的清除图标
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show: false,
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// 标记input当前状态是否处于聚焦中，如果是，才会显示右侧的清除控件
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focused: this.focus
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// 绑定输入框的值
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// inputValue: this.value
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};
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},
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watch: {
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keyword(nVal) {
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// 双向绑定值，让v-model绑定的值双向变化
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// #ifdef VUE3
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this.$emit("update:modelValue", nVal);
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// #endif
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// #ifdef VUE2
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this.$emit('input', nVal);
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// #endif
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// 触发change事件，事件效果和v-model双向绑定的效果一样，让用户多一个选择
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this.$emit('change', nVal);
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},
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// #ifdef VUE3
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modelValue: {
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immediate: true,
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handler(nVal) {
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this.keyword = nVal;
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}
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},
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// #endif
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// #ifdef VUE2
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value: {
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immediate: true,
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handler(nVal) {
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this.keyword = nVal;
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}
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},
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// #endif
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},
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computed: {
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showActionBtn() {
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return !this.animation && this.showAction
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}
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},
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emits: ['clear', 'search', 'custom', 'focus', 'blur', 'click', 'clickIcon', 'update:modelValue', 'change'],
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methods: {
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addStyle,
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addUnit,
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// 目前HX2.6.9 v-model双向绑定无效，故监听input事件获取输入框内容的变化
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inputChange(e) {
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this.keyword = e.detail.value;
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},
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// 清空输入
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// 也可以作为用户通过this.$refs形式调用清空输入框内容
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clear() {
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this.keyword = '';
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// 延后发出事件，避免在父组件监听clear事件时，value为更新前的值(不为空)
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this.$nextTick(() => {
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this.$emit('clear');
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})
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},
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// 确定搜索
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search(e) {
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this.$emit('search', e.detail.value);
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try {
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// 收起键盘
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uni.hideKeyboard();
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} catch (e) {}
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},
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// 点击右边自定义按钮的事件
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custom() {
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this.$emit('custom', this.keyword);
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try {
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// 收起键盘
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uni.hideKeyboard();
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} catch (e) {}
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},
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// 获取焦点
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getFocus() {
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this.focused = true;
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// 开启右侧搜索按钮展开的动画效果
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if (this.animation && this.showAction) this.show = true;
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this.$emit('focus', this.keyword);
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},
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// 失去焦点
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blur() {
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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.show = false;
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this.$emit('blur', this.keyword);
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},
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// 点击搜索框，只有disabled=true时才发出事件，因为禁止了输入，意味着是想跳转真正的搜索页
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clickHandler() {
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if (this.disabled) this.$emit('click');
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},
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// 点击左边图标
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clickIcon(e) {
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this.$emit('clickIcon', this.keyword);
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try {
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// 收起键盘
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uni.hideKeyboard();
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} catch (e) {}
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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$u-search-content-padding: 0 10px !default;
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$u-search-label-color: $u-main-color !default;
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$u-search-label-font-size: 14px !default;
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$u-search-label-margin: 0 4px !default;
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$u-search-close-size: 20px !default;
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$u-search-close-radius: 100px !default;
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$u-search-close-bgColor: #C6C7CB !default;
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$u-search-close-transform: scale(0.82) !default;
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$u-search-input-font-size: 14px !default;
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$u-search-input-margin: 0 5px !default;
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$u-search-input-color: $u-main-color !default;
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$u-search-input-placeholder-color: $u-tips-color !default;
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$u-search-action-font-size: 14px !default;
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$u-search-action-color: $u-main-color !default;
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$u-search-action-width: 0 !default;
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$u-search-action-active-width: 40px !default;
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$u-search-action-margin-left: 5px !default;
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/* #ifdef H5 */
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// iOS15在H5下，hx的某些版本，input type=search时，会多了一个搜索图标，进行移除
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[type="search"]::-webkit-search-decoration {
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display: none;
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}
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/* #endif */
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.u-search {
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@include flex(row);
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align-items: center;
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flex: 1;
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&__content {
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@include flex;
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align-items: center;
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padding: $u-search-content-padding;
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flex: 1;
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justify-content: space-between;
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border-width: 1px;
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border-color: transparent;
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border-style: solid;
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overflow: hidden;
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&__icon {
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@include flex;
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align-items: center;
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}
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&__label {
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color: $u-search-label-color;
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font-size: $u-search-label-font-size;
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margin: $u-search-label-margin;
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}
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&__close {
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width: $u-search-close-size;
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height: $u-search-close-size;
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border-top-left-radius: $u-search-close-radius;
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border-top-right-radius: $u-search-close-radius;
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border-bottom-left-radius: $u-search-close-radius;
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border-bottom-right-radius: $u-search-close-radius;
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background-color: $u-search-close-bgColor;
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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: $u-search-close-transform;
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}
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&__input {
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flex: 1;
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font-size: $u-search-input-font-size;
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line-height: 1;
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margin: $u-search-input-margin;
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color: $u-search-input-color;
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&--placeholder {
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color: $u-search-input-placeholder-color;
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}
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}
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}
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&__action {
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font-size: $u-search-action-font-size;
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color: $u-search-action-color;
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width: $u-search-action-width;
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overflow: hidden;
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transition-property: width;
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transition-duration: 0.3s;
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/* #ifndef APP-NVUE */
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white-space: nowrap;
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/* #endif */
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text-align: center;
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&--active {
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width: $u-search-action-active-width;
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margin-left: $u-search-action-margin-left;
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}
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}
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}
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</style>
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