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364 lines
8.8 KiB
364 lines
8.8 KiB
4 years ago
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<template>
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<view class="uni-indexed-list" ref="list" id="list">
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<!-- #ifdef APP-NVUE -->
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<list class="uni-indexed-list__scroll" scrollable="true" show-scrollbar="false">
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<cell v-for="(list, idx) in lists" :key="idx" :ref="'uni-indexed-list-' + idx">
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<!-- #endif -->
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<!-- #ifndef APP-NVUE -->
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<scroll-view :scroll-into-view="scrollViewId" class="uni-indexed-list__scroll" scroll-y>
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<view v-for="(list, idx) in lists" :key="idx" :id="'uni-indexed-list-' + idx">
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<!-- #endif -->
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<uni-indexed-list-item :list="list" :loaded="loaded" :idx="idx" :showSelect="showSelect" @itemClick="onClick"></uni-indexed-list-item>
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<!-- #ifndef APP-NVUE -->
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</view>
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</scroll-view>
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<!-- #endif -->
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<!-- #ifdef APP-NVUE -->
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</cell>
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</list>
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<!-- #endif -->
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<view :class="touchmove ? 'uni-indexed-list__menu--active' : ''" @touchstart="touchStart" @touchmove.stop.prevent="touchMove" @touchend="touchEnd" class="uni-indexed-list__menu">
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<view v-for="(list, key) in lists" :key="key" class="uni-indexed-list__menu-item">
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<text class="uni-indexed-list__menu-text" :class="touchmoveIndex == key ? 'uni-indexed-list__menu-text--active' : ''">{{ list.value }}</text>
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</view>
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</view>
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<view v-if="touchmove" class="uni-indexed-list__alert-wrapper">
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<text class="uni-indexed-list__alert">{{ lists[touchmoveIndex] }}</text>
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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 uniIcons from '../uni-icons/uni-icons.vue'
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import uniIndexedListItem from './uni-data-indexed-list-item.vue'
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import clientdb from './clientdb.js'
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// #ifdef APP-NVUE
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const dom = weex.requireModule('dom');
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// #endif
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// #ifdef APP-PLUS
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function throttle(func, delay) {
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var prev = Date.now();
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return function() {
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var context = this;
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var args = arguments;
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var now = Date.now();
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if (now - prev >= delay) {
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func.apply(context, args);
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prev = Date.now();
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}
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}
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}
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function touchMove(e) {
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let pageY = e.touches[0].pageY
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let index = Math.floor((pageY - this.winOffsetY) / this.itemHeight)
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if (this.touchmoveIndex === index) {
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return false
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}
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let item = this.lists[index]
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if (item) {
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// #ifndef APP-NVUE
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this.scrollViewId = 'uni-indexed-list-' + index
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this.touchmoveIndex = index
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// #endif
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// #ifdef APP-NVUE
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dom.scrollToElement(this.$refs['uni-indexed-list-' + index][0], {
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animated: false
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})
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this.touchmoveIndex = index
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// #endif
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}
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}
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const throttleTouchMove = throttle(touchMove, 40)
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// #endif
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/**
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* IndexedList 索引列表
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* @description 用于展示索引列表
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* @tutorial https://ext.dcloud.net.cn/plugin?id=375
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* @property {Boolean} showSelect = [true|false] 展示模式
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* @value true 展示模式
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* @value false 选择模式
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* @property {Object} options 索引列表需要的数据对象
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* @property {String|DBCollectionString} collection 表名
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* @property {String|ClientDBActionString} action 云端执行数据库查询的前或后，触发某个action函数操作，进行预处理或后处理
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* @property {String|DBFieldString} field 查询字段，多个字段用 `,` 分割
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* @property {String} orderby 排序字段及正序倒叙设置
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* @property {String|JQLString} where 查询条件
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* @event {Function} click 点击列表事件 ，返回当前选择项的事件对象
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* @example <uni-indexed-list options="" showSelect="false" @click=""></uni-indexed-list>
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*/
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export default {
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name: 'UniDataIndexedList',
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mixins: [clientdb],
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components: {
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uniIcons,
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uniIndexedListItem
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},
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props: {
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options: {
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type: Array,
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default () {
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return []
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}
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},
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localdata: {
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type: Array,
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default () {
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return []
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}
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},
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showSelect: {
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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lists: [],
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winHeight: 0,
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itemHeight: 0,
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winOffsetY: 0,
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touchmove: false,
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touchmoveIndex: -1,
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scrollViewId: '',
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touchmoveTimeout: '',
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loaded: false
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}
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},
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watch: {
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options: {
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handler: function() {
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this.setList()
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},
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deep: true
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}
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},
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mounted() {
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if (this.localdata.length || this.options.length) {
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setTimeout(() => {
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this.setList()
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}, 50)
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setTimeout(() => {
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this.loaded = true
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}, 300);
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} else if (this.collection) {
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if (!this.manual) {
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this._execLoadData((data) => {
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this.lists = this.groupData(data);
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})
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}
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}
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},
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methods: {
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groupData(data) {
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let groups = {};
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for (let i = 0; i < data.length; i++) {
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let item = data[i];
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let group = item.group;
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if (!groups[group]) {
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groups[group] = {
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"title": group,
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"value": group,
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"itemIndex": i,
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"items": []
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}
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}
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groups[group].items.push(item);
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}
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let result = []
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for (let g in groups) {
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let group = groups[g];
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let items = group.items;
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for (let j = 0; j < items.length; j++) {
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items[j].itemIndex = j;
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}
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result.push(group);
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}
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return result;
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},
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setList(data) {
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let index = 0;
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this.lists = []
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this.options.forEach((value, index) => {
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if (value.data.length === 0) {
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return
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}
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let indexBefore = index
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let items = value.data.map(item => {
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let obj = {}
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obj['value'] = value.letter
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obj['text'] = item
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obj['itemIndex'] = index
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index++
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obj.checked = item.checked ? item.checked : false
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return obj
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})
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this.lists.push({
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title: value.letter,
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value: value.letter,
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items: items,
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itemIndex: indexBefore
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})
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})
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// #ifndef APP-NVUE
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uni.createSelectorQuery()
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.in(this)
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.select('#list')
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.boundingClientRect()
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.exec(ret => {
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this.winOffsetY = ret[0].top
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this.winHeight = ret[0].height
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this.itemHeight = this.winHeight / this.lists.length
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})
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// #endif
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// #ifdef APP-NVUE
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dom.getComponentRect(this.$refs['list'], (res) => {
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this.winOffsetY = res.size.top
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this.winHeight = res.size.height
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this.itemHeight = this.winHeight / this.lists.length
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})
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// #endif
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},
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touchStart(e) {
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this.touchmove = true
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let pageY = e.touches[0].pageY
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let index = Math.floor((pageY - this.winOffsetY) / this.itemHeight)
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let item = this.lists[index]
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if (item) {
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this.scrollViewId = 'uni-indexed-list-' + index
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this.touchmoveIndex = index
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// #ifdef APP-NVUE
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dom.scrollToElement(this.$refs['uni-indexed-list-' + index][0], {
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animated: false
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})
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// #endif
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}
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},
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touchMove(e) {
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// #ifndef APP-PLUS
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let pageY = e.touches[0].pageY
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let index = Math.floor((pageY - this.winOffsetY) / this.itemHeight)
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if (this.touchmoveIndex === index) {
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return false
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}
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let item = this.lists[index]
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if (item) {
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this.scrollViewId = 'uni-indexed-list-' + index
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this.touchmoveIndex = index
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}
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// #endif
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// #ifdef APP-PLUS
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throttleTouchMove.call(this, e)
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// #endif
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},
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touchEnd() {
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this.touchmove = false
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this.touchmoveIndex = -1
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},
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onClick(e) {
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let {
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idx,
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index
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} = e
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let obj = {}
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for (let key in this.lists[idx].items[index]) {
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obj[key] = this.lists[idx].items[index][key]
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}
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let select = []
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if (this.showSelect) {
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this.lists[idx].items[index].checked = !this.lists[idx].items[index].checked
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this.lists.forEach((value, idx) => {
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value.items.forEach((item, index) => {
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if (item.checked) {
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let obj = {}
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for (let key in this.lists[idx].items[index]) {
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obj[key] = this.lists[idx].items[index][key]
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}
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select.push(obj)
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}
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})
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})
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}
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this.$emit('click', {
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item: obj,
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select: select
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})
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}
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}
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}
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</script>
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<style scoped>
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.uni-indexed-list {
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position: absolute;
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left: 0;
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top: 0;
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right: 0;
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bottom: 0;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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}
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.uni-indexed-list__scroll {
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flex: 1;
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}
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.uni-indexed-list__menu {
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width: 24px;
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background-color: lightgrey;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: column;
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}
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.uni-indexed-list__menu-item {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex: 1;
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align-items: center;
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justify-content: center;
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}
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.uni-indexed-list__menu-text {
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line-height: 20px;
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font-size: 12px;
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text-align: center;
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color: #aaa;
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}
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.uni-indexed-list__menu--active {
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background-color: #c8c8c8;
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}
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.uni-indexed-list__menu-text--active {
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color: #007aff;
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}
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.uni-indexed-list__alert-wrapper {
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position: absolute;
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left: 0;
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top: 0;
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right: 0;
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bottom: 0;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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align-items: center;
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justify-content: center;
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}
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.uni-indexed-list__alert {
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width: 80px;
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height: 80px;
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border-radius: 80px;
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text-align: center;
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line-height: 80px;
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font-size: 35px;
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color: #fff;
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background-color: rgba(0, 0, 0, 0.5);
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}
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</style>
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