269 lines
9.7 KiB
Plaintext
269 lines
9.7 KiB
Plaintext
<template>
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<view class="l-picker" :style="[styles]" ref="pickerRef">
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<view class="l-picker__toolbar" v-if="cancelBtn != null || title != null || confirmBtn != null">
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<text class="l-picker__cancel" :style="[cancelStyle??{}]" v-if="cancelBtn != null" @click="onCancel">{{cancelBtn}}</text>
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<!-- #ifdef APP-HARMONY -->
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<text v-else class="l-picker__cancel"></text>
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<!-- #endif -->
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<text class="l-picker__title" :style="[titleStyle??{}]">{{title}}</text>
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<text class="l-picker__confirm" :style="[confirmStyle??{}]" v-if="confirmBtn != null" @click="onConfirm">{{confirmBtn}}</text>
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<!-- #ifdef APP-HARMONY -->
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<text v-else class="l-picker__confirm"></text>
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<!-- #endif -->
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</view>
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<slot name="header"></slot>
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<view class="l-picker__main" :style="[groupHeight != null ? { height: groupHeight}: {}]">
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<slot>
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<l-picker-item v-for="(options, i) in props.columns" :options="options" :key="i" :column="i" :value="pickerValue.length > i ? pickerValue[i]: null"></l-picker-item>
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</slot>
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<view class="l-picker__empty" v-if="isEmpty">
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<slot name="empty"></slot>
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</view>
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<view class="l-picker__indicator" :style="indicatorStyle ?? ''" v-if="!isEmpty"></view>
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</view>
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<slot name="footer" />
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<view class="l-picker__loading" ref="loadingRef" v-if="loading" :style="[loadingMaskColor != null ? {background: loadingMaskColor}: {}]">
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<!-- #ifndef APP -->
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<l-loading :size="loadingSize" :color="loadingColor"></l-loading>
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<!-- #endif -->
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</view>
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</view>
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</template>
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<script lang="uts" setup>
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/**
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* Picker 选择器组件
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* @description 多列数据选择器，支持级联数据展示和自定义样式配置
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* <br>插件类型：LPickerComponentPublicInstance
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* @tutorial https://ext.dcloud.net.cn/plugin?name=lime-picker
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*
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* @property {string} cancelBtn 取消按钮文字
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* @property {string | UTSJSONObject} cancelStyle 取消按钮样式
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* @property {string} confirmBtn 确定按钮文字
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* @property {string | UTSJSONObject} confirmStyle 确定按钮样式
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* @property {string} title 标题文字
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* @property {string | UTSJSONObject} titleStyle 标题样式
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* @property {UTSJSONObject} keys 字段别名配置（例：{value: 'id', label: 'name'}）
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* @property {PickerColumn[]} columns 选择器列数据（必填）
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* @property {PickerValue[]} modelValue 选中值（支持v-model）
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* @property {PickerValue[]} defaultValue 默认选中值
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* @property {PickerValue[]} value 选中值（兼容旧版）
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* @property {boolean} loading 是否显示加载状态
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* @property {string} loadingColor 加载图标颜色
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* @property {string} loadingMaskColor 加载遮罩颜色
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* @property {string} loadingSize 加载图标尺寸
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* @property {string} itemHeight 选项行高度
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* @property {string} itemColor 选项文字颜色
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* @property {string} itemFontSize 选项字体大小
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* @property {string} itemActiveColor 选中项颜色
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* @property {string} indicatorStyle 指示器样式
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* @property {string[]} maskColors 遮罩颜色
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* @property {string} bgColor 背景颜色
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* @property {string} groupHeight 选项组高度
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* @property {string} radius 圆角半径
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* @property {boolean} resetIndex 是否重置选中索引
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*
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* @event {Function} confirm 点击确定时触发（事件参数：PickerConfirmEvent）
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* @event {Function} cancel 点击取消时触发
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* @event {Function} change 值变化时触发（事件参数：PickerPickEvent）
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* @event {Function} column-change 列数据变化时触发（事件参数：PickerChangeInfo）
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*/
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import type { PickerProps, PickerColumn, PickerValue, PickerColumnItem, PickerConfirmEvent, PickerPickEvent } from './type';
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import { arrayEqual } from '@/uni_modules/lime-shared/arrayEqual'
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import { assignAtIndex } from '@/uni_modules/lime-shared/assignAtIndex'
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import { unitConvert } from '@/uni_modules/lime-shared/unitConvert'
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// #ifdef APP
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import { useLoading } from '@/uni_modules/lime-loading'
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// #endif
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const emit = defineEmits(['change', 'cancel', 'pick', 'confirm', 'update:modelValue']);
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const props = withDefaults(defineProps<PickerProps>(), {
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columns: [] as PickerColumn[],
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loading: false,
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resetIndex: false,
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loadingSize: '32px'
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})
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const pickerItemInstanceArray = reactive<LPickerItemComponentPublicInstance[]>([]);
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const modelValue = ref<PickerValue[]>(props.value ?? props.modelValue ?? props.defaultValue ?? [])
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const pickerValue = computed({
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set(value : PickerValue[]) {
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if (arrayEqual(value, modelValue.value)) return
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modelValue.value = value;
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emit('update:modelValue', value)
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emit('change', value)
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},
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get() : PickerValue[] {
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return props.value ?? props.modelValue ?? modelValue.value
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}
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} as WritableComputedOptions<PickerValue[]>)
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const isEmpty = computed(() : boolean => {
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return props.columns.length == 0 && pickerItemInstanceArray.every(child => child.options.length == 0)
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})
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const styles = computed(() : Map<string, any> => {
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const style = new Map<string, any>()
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if (props.bgColor != null) {
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style.set('background', props.bgColor!)
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}
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if (props.radius != null) {
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style.set('border-top-left-radius', props.radius!)
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style.set('border-top-right-radius', props.radius!)
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}
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return style
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})
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const curIndexArray = ref<number[]>([]);
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const curValueArray = ref([...pickerValue.value]);
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const curItemArray : PickerColumnItem[] = []
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const realColumns = computed(() : PickerColumn[] => {
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const pickerColumns = pickerItemInstanceArray.map((child) : PickerColumn => child.options)
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if (pickerColumns.length > 0) {
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return pickerColumns
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}
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return props.columns
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})
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const manageChildInList = (child : LPickerItemComponentPublicInstance, shouldAdd : boolean) => {
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const index = pickerItemInstanceArray.indexOf(child);
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if (shouldAdd) {
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if (index != -1) return
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pickerItemInstanceArray.push(child)
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} else {
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if (index == -1) return
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pickerItemInstanceArray.splice(index, 1);
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}
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}
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const updateItems = (item : PickerColumnItem, index : number, column : number) => {
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assignAtIndex(curIndexArray.value, column, index)
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assignAtIndex(curValueArray.value, column, item.value)
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assignAtIndex(curItemArray, column, item)
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};
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const updatePickerItems = () => {
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const _indexs : number[] = []
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const _values : any[] = []
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pickerItemInstanceArray.forEach((child, column) => {
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if (child.options.length == 0) return
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const value = curValueArray.value.length > column ? curValueArray.value[column] : null;
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// #ifndef APP
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const index = value == null ? 0 : child._.exposed.getIndexByValue(value);
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child._.exposed.setIndex(index)
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// #endif
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// #ifdef APP
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// const index = value == null ? 0 : child.getIndexByValue(value)
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// child.setIndex(index)
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const index : number = (value == null ? 0 : child.$callMethod('getIndexByValue', value)) as number
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child.$callMethod('setIndex', index)
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// #endif
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const item = child.options[index]
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_indexs.push(index)
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_values.push(item.value)
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assignAtIndex(curItemArray, column, item)
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})
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if (arrayEqual(curValueArray.value, _values) && arrayEqual(curIndexArray.value, _indexs)) return
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curIndexArray.value = _indexs
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curValueArray.value = _values
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pickerValue.value = [...curValueArray.value]
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}
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const onPick = (item : PickerColumnItem, index : number, column : number) => {
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if (curIndexArray.value[column] == index) return
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assignAtIndex(curIndexArray.value, column, index)
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assignAtIndex(curValueArray.value, column, item.value)
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assignAtIndex(curItemArray, column, item)
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const obj : PickerPickEvent = {
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values: curValueArray.value,
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column,
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index
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}
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pickerValue.value = [...curValueArray.value]
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emit('pick', obj)
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};
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const onCancel = (e : UniPointerEvent) => {
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updatePickerItems()
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emit('cancel', e)
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}
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const onConfirm = () => {
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const values = [...curValueArray.value];
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const indexs = [...curIndexArray.value];
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const items = curItemArray.map((item) : PickerColumnItem => toRaw(item))
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if (!arrayEqual(pickerValue.value, values)) {
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pickerValue.value = values;
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}
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const obj : PickerConfirmEvent = {
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values,
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indexs,
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items
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}
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emit('confirm', obj)
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}
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const stopPickerValue = watch(pickerValue, () => {
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if (arrayEqual(pickerValue.value, curValueArray.value)) return
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curValueArray.value = pickerValue.value.map((item : PickerValue) => item);
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updatePickerItems()
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})
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const stopColumns = watch(realColumns, () => {
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updatePickerItems()
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})
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onMounted(() => {
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nextTick(() => {
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if (
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!arrayEqual(pickerValue.value, curValueArray.value) &&
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pickerValue.value.length > 0) {
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curValueArray.value = [...pickerValue.value]
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updatePickerItems()
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}
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})
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})
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// #ifdef APP
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const loadingRef = ref<UniElement | null>(null);
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// const {play, clear, failed} = useLoading(loadingRef, 'circular', props.loadingColor?? '#3283ff', unitConvert(props.loadingSize))
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const loadingAni = useLoading(loadingRef)
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loadingAni.type = 'circular'
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loadingAni.color = props.loadingColor ?? '#3283ff'
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loadingAni.ratio = unitConvert(props.loadingSize)
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watchEffect(() => {
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if (props.loading) {
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loadingAni.play()
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} else {
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loadingAni.clear()
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}
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})
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// #endif
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onBeforeUnmount(() => {
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stopPickerValue()
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stopColumns()
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})
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defineExpose({
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confirm: onConfirm,
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getSelectedOptions: (): PickerConfirmEvent => {
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const values = [...curValueArray.value];
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const indexs = [...curIndexArray.value];
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const items = curItemArray.map((item) : PickerColumnItem => toRaw(item))
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if (!arrayEqual(pickerValue.value, values)) {
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pickerValue.value = values;
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}
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const obj : PickerConfirmEvent = {
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values,
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indexs,
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items
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}
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return obj
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}
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})
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provide('limePicker', props)
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provide('limePickerOnPick', onPick)
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provide('limePickerUpdateItems', updateItems)
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provide('limePickerItems', pickerItemInstanceArray)
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provide('limePickerManageChildInList', manageChildInList)
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</script>
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<style lang="scss">
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@import './index.scss';
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</style> |