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import type { ExtractPropTypes, PropType } from 'vue';
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import type { OptionType } from '../../types/global';
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import { baseProps } from '../common/props';
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/**
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* u-dropdown-item 下拉菜单项 Props
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* @description 该组件一般用于向下展开菜单,同时可切换多个选项卡的场景
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* @property {String|Number|Array} modelValue 双向绑定选项卡选择值
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* @property {String|Number} title 菜单项标题
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* @property {OptionType[]} options 选项数据,如果传入了默认slot,此参数无效
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* @property {Boolean} disabled 是否禁用此选项卡(默认false)
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* @property {String|Number} height 弹窗下拉内容的高度(内容超出将会滚动)(默认auto)
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* @property {Boolean} show 控制是否显示菜单项(默认true)
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*/
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export const DropdownItemProps = {
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...baseProps,
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/** 当前选中项的value值 */
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modelValue: { type: [Number, String, Array] as PropType<number | string | any[]>, default: '' },
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/** 菜单项标题 */
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title: { type: [String, Number] as PropType<string | number>, default: '' },
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/** 选项数据,如果传入了默认slot,此参数无效 */
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options: { type: Array as PropType<OptionType[]>, default: () => [] },
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/** 是否禁用此菜单项 */
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disabled: { type: Boolean, default: false },
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/** 下拉弹窗的高度 */
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height: { type: [Number, String] as PropType<number | string>, default: 'auto' },
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/** 控制是否显示菜单项 */
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show: { type: Boolean, default: true }
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};
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export type DropdownItemProps = ExtractPropTypes<typeof DropdownItemProps>;
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<template>
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<view
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v-if="show && active"
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class="u-dropdown-item"
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:class="customClass"
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:style="$u.toStyle(customStyle)"
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@touchmove.stop.prevent
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@tap.stop.prevent
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>
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<block v-if="!slots.default && !slots.$default">
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<scroll-view :scroll-y="true" :style="{ height: $u.addUnit(String(height)) }">
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<view class="u-dropdown-item__options">
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<u-cell-group>
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<u-cell-item
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@click="cellClick(item.value)"
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:arrow="false"
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:title="item.label"
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v-for="(item, index) in options"
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:key="index"
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:title-style="{ color: modelValue == item.value ? activeColor : inactiveColor }"
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>
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<u-icon
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v-if="modelValue == item.value"
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name="checkbox-mark"
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:color="activeColor"
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size="32"
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></u-icon>
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</u-cell-item>
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</u-cell-group>
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</view>
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</scroll-view>
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</block>
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<slot v-else />
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</view>
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</template>
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<script lang="ts">
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export default {
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name: 'u-dropdown-item',
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options: {
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addGlobalClass: true,
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// #ifndef MP-TOUTIAO
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virtualHost: true,
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// #endif
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styleIsolation: 'shared'
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}
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};
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</script>
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<script setup lang="ts">
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import { ref, computed, useSlots, watch } from 'vue';
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import { $u, useChildren } from '../..';
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import { DropdownItemProps } from './types';
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/**
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* dropdown-item 下拉菜单
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* @description 该组件一般用于向下展开菜单,同时可切换多个选项卡的场景
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* @tutorial https://uviewpro.cn/zh/components/dropdown.html
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* @property {String | Number} v-model 双向绑定选项卡选择值
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* @property {String} title 菜单项标题
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* @property {Array[Object]} options 选项数据,如果传入了默认slot,此参数无效
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* @property {Boolean} disabled 是否禁用此选项卡(默认false)
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* @property {String | Number} duration 选项卡展开和收起的过渡时间,单位ms(默认300)
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* @property {String | Number} height 弹窗下拉内容的高度(内容超出将会滚动)(默认auto)
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* @property {Boolean} show 控制是否显示菜单项(默认true)
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* @example <u-dropdown-item title="标题"></u-dropdown-item>
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*/
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// props 定义
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const props = defineProps(DropdownItemProps);
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// emits 定义
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const emit = defineEmits(['update:modelValue', 'change']);
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// 插槽
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const slots = useSlots();
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const { parentExposed, emitToParent } = useChildren('u-dropdown-item', 'u-dropdown');
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// 当前项是否处于展开状态
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const active = ref(false);
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// 激活时左边文字和右边对勾图标的颜色
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const activeColor = computed(() => parentExposed.value?.props?.activeColor || $u.color.primary);
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// 未激活时左边文字和右边对勾图标的颜色
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const inactiveColor = computed(() => parentExposed.value?.props?.inactiveColor || $u.color.contentColor);
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// 监听props变化,通知父组件重新初始化
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const propsChange = computed(() => `${props.title}-${props.disabled}-${props.show}`);
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// 监听propsChange变化,通知父组件重新init
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watch(propsChange, () => {
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emitToParent('init');
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});
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/**
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* cell被点击
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* @param value 选中值
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*/
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function cellClick(value: string | number | any) {
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// 修改通过v-model绑定的值
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emit('update:modelValue', value);
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// 通知父组件(u-dropdown)收起菜单
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emitToParent('close');
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// 发出事件,抛出当前勾选项的value
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emit('change', value);
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}
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function setActive(value: boolean) {
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active.value = value;
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}
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defineExpose({
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cellClick,
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setActive,
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props
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});
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</script>
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<style scoped lang="scss">
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@import '../../libs/css/style.components.scss';
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</style>
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