540 lines
23 KiB
JavaScript
540 lines
23 KiB
JavaScript
// [z-paging]虚拟列表模块
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import u from '.././z-paging-utils'
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import c from '.././z-paging-constant'
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import Enum from '.././z-paging-enum'
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export default {
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props: {
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// 是否使用虚拟列表，默认为否
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useVirtualList: {
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type: Boolean,
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default: u.gc('useVirtualList', false)
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},
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// 在使用虚拟列表时，是否使用兼容模式，默认为否
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useCompatibilityMode: {
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type: Boolean,
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default: u.gc('useCompatibilityMode', false)
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},
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// 使用兼容模式时传递的附加数据
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extraData: {
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type: Object,
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default: u.gc('extraData', {})
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},
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// 是否在z-paging内部循环渲染列表(内置列表)，默认为否。若use-virtual-list为true，则此项恒为true
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useInnerList: {
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type: Boolean,
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default: u.gc('useInnerList', false)
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},
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// 强制关闭inner-list，默认为false，如果为true将强制关闭innerList，适用于开启了虚拟列表后需要强制关闭inner-list的情况
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forceCloseInnerList: {
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type: Boolean,
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default: u.gc('forceCloseInnerList', false)
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},
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// 内置列表cell的key名称，仅nvue有效，在nvue中开启use-inner-list时必须填此项
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cellKeyName: {
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type: String,
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default: u.gc('cellKeyName', '')
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},
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// innerList样式
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innerListStyle: {
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type: Object,
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default: u.gc('innerListStyle', {})
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},
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// innerCell样式
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innerCellStyle: {
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type: Object,
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default: u.gc('innerCellStyle', {})
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},
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// 预加载的列表可视范围(列表高度)页数，默认为12，即预加载当前页及上下各12页的cell。此数值越大，则虚拟列表中加载的dom越多，内存消耗越大(会维持在一个稳定值)，但增加预加载页面数量可缓解快速滚动短暂白屏问题
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preloadPage: {
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type: [Number, String],
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default: u.gc('preloadPage', 12),
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validator: (value) => {
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if (value <= 0) u.consoleErr('preload-page必须大于0！');
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return value > 0;
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}
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},
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// 虚拟列表cell高度模式，默认为fixed，也就是每个cell高度完全相同，将以第一个cell高度为准进行计算。可选值【dynamic】，即代表高度是动态非固定的，【dynamic】性能低于【fixed】。
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cellHeightMode: {
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type: String,
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default: u.gc('cellHeightMode', Enum.CellHeightMode.Fixed)
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},
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// 固定的cell高度，cellHeightMode=fixed才有效，若设置了值，则不计算第一个cell高度而使用设置的cell高度
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fixedCellHeight: {
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type: [Number, String],
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default: u.gc('fixedCellHeight', 0)
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},
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// 虚拟列表列数，默认为1。常用于每行有多列的情况，例如每行有2列数据，需要将此值设置为2
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virtualListCol: {
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type: [Number, String],
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default: u.gc('virtualListCol', 1)
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},
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// 虚拟列表scroll取样帧率，默认为80，过低容易出现白屏问题，过高容易出现卡顿问题
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virtualScrollFps: {
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type: [Number, String],
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default: u.gc('virtualScrollFps', 80)
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},
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// 虚拟列表cell id的前缀，适用于一个页面有多个虚拟列表的情况，用以区分不同虚拟列表cell的id，注意：请勿传数字或以数字开头的字符串。如设置为list1，则cell的id应为：list1-zp-id-${item.zp_index}
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virtualCellIdPrefix: {
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type: String,
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default: u.gc('virtualCellIdPrefix', '')
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},
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// 虚拟列表是否使用swiper-item包裹，默认为否，此属性为了解决vue3+(微信小程序或QQ小程序)中，使用非内置列表写法时，若z-paging在swiper-item内存在无法获取slot插入的cell高度进而导致虚拟列表失败的问题
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// 仅vue3+(微信小程序或QQ小程序)+非内置列表写法虚拟列表有效，其他情况此属性设置任何值都无效，所以如果您在swiper-item内使用z-paging的非内置虚拟列表写法，将此属性设置为true即可
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virtualInSwiperSlot: {
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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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virtualListKey: u.getInstanceId(),
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virtualCellHeight: 0,
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virtualScrollTimeStamp: 0,
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virtualList: [],
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virtualPlaceholderTopHeight: 0,
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virtualPlaceholderBottomHeight: 0,
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virtualTopRangeIndex: 0,
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virtualBottomRangeIndex: 0,
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lastVirtualTopRangeIndex: 0,
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lastVirtualBottomRangeIndex: 0,
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virtualItemInsertedCount: 0,
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virtualHeightCacheList: [],
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getCellHeightRetryCount: {
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fixed: 0,
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dynamic: 0
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},
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updateVirtualListFromDataChange: false
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}
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},
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watch: {
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// 监听总数据的改变，刷新虚拟列表布局
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realTotalData() {
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this.updateVirtualListRender();
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},
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// 监听虚拟列表渲染数组的改变并emit
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virtualList(newVal){
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this.$emit('update:virtualList', newVal);
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this.$emit('virtualListChange', newVal);
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},
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// 监听虚拟列表顶部占位高度改变并emit
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virtualPlaceholderTopHeight(newVal) {
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this.$emit('virtualTopHeightChange', newVal);
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}
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},
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computed: {
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virtualCellIndexKey() {
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return c.listCellIndexKey;
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},
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finalUseVirtualList() {
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if (this.useVirtualList && this.usePageScroll){
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u.consoleErr('使用页面滚动时，开启虚拟列表无效！');
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}
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return this.useVirtualList && !this.usePageScroll;
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},
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finalUseInnerList() {
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return this.useInnerList || (this.finalUseVirtualList && !this.forceCloseInnerList);
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},
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finalCellKeyName() {
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// #ifdef APP-NVUE
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if (this.finalUseVirtualList && !this.cellKeyName.length){
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u.consoleErr('在nvue中开启use-virtual-list必须设置cell-key-name，否则将可能导致列表渲染错误！');
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}
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// #endif
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return this.cellKeyName;
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},
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finalVirtualPageHeight(){
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return this.scrollViewHeight > 0 ? this.scrollViewHeight : this.windowHeight;
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},
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finalFixedCellHeight() {
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return u.convertToPx(this.fixedCellHeight);
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},
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fianlVirtualCellIdPrefix() {
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const prefix = this.virtualCellIdPrefix ? this.virtualCellIdPrefix + '-' : '';
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return prefix + 'zp-id';
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},
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finalPlaceholderTopHeightStyle() {
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// #ifdef VUE2
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return { transform: this.virtualPlaceholderTopHeight > 0 ? `translateY(${this.virtualPlaceholderTopHeight}px)` : 'none' };
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// #endif
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return {};
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},
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virtualRangePageHeight(){
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return this.finalVirtualPageHeight * this.preloadPage;
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},
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virtualScrollDisTimeStamp() {
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return 1000 / this.virtualScrollFps;
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}
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},
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methods: {
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// 在使用动态高度虚拟列表时，若在列表数组中需要插入某个item，需要调用此方法；item:需要插入的item，index:插入的cell位置，若index为2，则插入的item在原list的index=1之后，index从0开始
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doInsertVirtualListItem(item, index) {
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if (this.cellHeightMode !== Enum.CellHeightMode.Dynamic) return;
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this.realTotalData.splice(index, 0, item);
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// #ifdef VUE3
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this.realTotalData = [...this.realTotalData];
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// #endif
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this.virtualItemInsertedCount ++;
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if (!item || Object.prototype.toString.call(item) !== '[object Object]') {
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item = { item };
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}
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const cellIndexKey = this.virtualCellIndexKey;
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item[cellIndexKey] = `custom-${this.virtualItemInsertedCount}`;
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item[c.listCellIndexUniqueKey] = `${this.virtualListKey}-${item[cellIndexKey]}`;
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this.$nextTick(async () => {
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let retryCount = 0;
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while (retryCount <= 10) {
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await u.wait(c.delayTime);
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const cellNode = await this._getVirtualCellNodeByIndex(item[cellIndexKey]);
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// 如果获取当前cell的节点信息失败，则重试（不超过10次）
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if (!cellNode) {
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retryCount ++;
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continue;
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}
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const currentHeight = cellNode ? cellNode[0].height : 0;
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const lastHeightCache = this.virtualHeightCacheList[index - 1];
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const lastTotalHeight = lastHeightCache ? lastHeightCache.totalHeight : 0;
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// 在缓存的cell高度数组中，插入此cell高度信息
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this.virtualHeightCacheList.splice(index, 0, {
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height: currentHeight,
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lastTotalHeight,
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totalHeight: lastTotalHeight + currentHeight
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});
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// 从当前index起后续的cell缓存高度的lastTotalHeight和totalHeight需要加上当前cell的高度
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for (let i = index + 1; i < this.virtualHeightCacheList.length; i++) {
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const thisNode = this.virtualHeightCacheList[i];
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thisNode.lastTotalHeight += currentHeight;
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thisNode.totalHeight += currentHeight;
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}
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this._updateVirtualScroll(this.oldScrollTop);
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break;
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}
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})
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},
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// 在使用动态高度虚拟列表时，手动更新指定cell的缓存高度(当cell高度在初始化之后再次改变后调用)；index:需要更新的cell在列表中的位置，从0开始
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didUpdateVirtualListCell(index) {
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if (this.cellHeightMode !== Enum.CellHeightMode.Dynamic) return;
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const currentNode = this.virtualHeightCacheList[index];
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this.$nextTick(() => {
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this._getVirtualCellNodeByIndex(index).then(cellNode => {
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// 更新当前cell的高度
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const cellNodeHeight = cellNode ? cellNode[0].height : 0;
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const heightDis = cellNodeHeight - currentNode.height;
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currentNode.height = cellNodeHeight;
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currentNode.totalHeight = currentNode.lastTotalHeight + cellNodeHeight;
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// 从当前index起后续的cell缓存高度的lastTotalHeight和totalHeight需要加上当前cell变化的高度
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for (let i = index + 1; i < this.virtualHeightCacheList.length; i++) {
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const thisNode = this.virtualHeightCacheList[i];
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thisNode.totalHeight += heightDis;
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thisNode.lastTotalHeight += heightDis;
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}
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});
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})
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},
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// 在使用动态高度虚拟列表时，若删除了列表数组中的某个item，需要调用此方法以更新高度缓存数组；index:删除的cell在列表中的位置，从0开始
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didDeleteVirtualListCell(index) {
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if (this.cellHeightMode !== Enum.CellHeightMode.Dynamic) return;
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const currentNode = this.virtualHeightCacheList[index];
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// 从当前index起后续的cell缓存高度的lastTotalHeight和totalHeight需要减去当前cell的高度
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for (let i = index + 1; i < this.virtualHeightCacheList.length; i++) {
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const thisNode = this.virtualHeightCacheList[i];
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thisNode.totalHeight -= currentNode.height;
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thisNode.lastTotalHeight -= currentNode.height;
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}
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// 将当前cell的高度信息从高度缓存数组中删除
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this.virtualHeightCacheList.splice(index, 1);
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},
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// 手动触发虚拟列表渲染更新，可用于解决例如修改了虚拟列表数组中元素，但展示未更新的情况
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updateVirtualListRender() {
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// #ifndef APP-NVUE
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if (this.finalUseVirtualList) {
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this.updateVirtualListFromDataChange = true;
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this.$nextTick(() => {
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this.getCellHeightRetryCount.fixed = 0;
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if (this.realTotalData.length) {
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this.cellHeightMode === Enum.CellHeightMode.Fixed && this.isFirstPage && this._updateFixedCellHeight()
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} else {
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this._resetDynamicListState(!this.isUserPullDown);
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}
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this._updateVirtualScroll(this.oldScrollTop);
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})
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}
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// #endif
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},
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// cellHeightMode为fixed时获取第一个cell高度
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_updateFixedCellHeight() {
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if (!this.finalFixedCellHeight) {
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this.$nextTick(() => {
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u.delay(() => {
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this._getVirtualCellNodeByIndex(0).then(cellNode => {
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if (!cellNode) {
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if (this.getCellHeightRetryCount.fixed > 10) return;
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this.getCellHeightRetryCount.fixed ++;
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// 如果获取第一个cell的节点信息失败，则重试（不超过10次）
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this._updateFixedCellHeight();
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} else {
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this.virtualCellHeight = cellNode[0].height;
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this._updateVirtualScroll(this.oldScrollTop);
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}
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});
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}, c.delayTime, 'updateFixedCellHeightDelay');
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})
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} else {
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this.virtualCellHeight = this.finalFixedCellHeight;
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}
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},
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// cellHeightMode为dynamic时获取每个cell高度
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_updateDynamicCellHeight(list, dataFrom = 'bottom') {
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const dataFromTop = dataFrom === 'top';
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const heightCacheList = this.virtualHeightCacheList;
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const currentCacheList = dataFromTop ? [] : heightCacheList;
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let listTotalHeight = 0;
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this.$nextTick(() => {
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u.delay(async () => {
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for (let i = 0; i < list.length; i++) {
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const cellNode = await this._getVirtualCellNodeByIndex(list[i][this.virtualCellIndexKey]);
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const currentHeight = cellNode ? cellNode[0].height : 0;
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if (!cellNode) {
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if (this.getCellHeightRetryCount.dynamic <= 10) {
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heightCacheList.splice(heightCacheList.length - i, i);
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this.getCellHeightRetryCount.dynamic ++;
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// 如果获取当前cell的节点信息失败，则重试（不超过10次）
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this._updateDynamicCellHeight(list, dataFrom);
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}
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return;
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}
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const lastHeightCache = currentCacheList.length ? currentCacheList.slice(-1)[0] : null;
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const lastTotalHeight = lastHeightCache ? lastHeightCache.totalHeight : 0;
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// 缓存当前cell的高度信息：height-当前cell高度；lastTotalHeight-前面所有cell的高度总和；totalHeight-包含当前cell的所有高度总和
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currentCacheList.push({
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height: currentHeight,
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lastTotalHeight,
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totalHeight: lastTotalHeight + currentHeight
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});
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if (dataFromTop) {
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listTotalHeight += currentHeight;
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}
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}
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// 如果数据是从顶部拼接的
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if (dataFromTop && list.length) {
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for (let i = 0; i < heightCacheList.length; i++) {
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// 更新之前所有项的缓存高度，需要加上此次插入的所有cell高度之和（因为是从顶部插入的cell）
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const heightCacheItem = heightCacheList[i];
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heightCacheItem.lastTotalHeight += listTotalHeight;
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heightCacheItem.totalHeight += listTotalHeight;
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}
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this.virtualHeightCacheList = currentCacheList.concat(heightCacheList);
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}
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this._updateVirtualScroll(this.oldScrollTop);
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}, c.delayTime, 'updateDynamicCellHeightDelay')
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})
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},
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// 设置cellItem的index
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_setCellIndex(list, dataFrom = 'bottom') {
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let currentItemIndex = 0;
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const cellIndexKey = this.virtualCellIndexKey;
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dataFrom === 'bottom' && ([Enum.QueryFrom.Refresh, Enum.QueryFrom.Reload].indexOf(this.queryFrom) >= 0) && this._resetDynamicListState();
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if (this.totalData.length && this.queryFrom !== Enum.QueryFrom.Refresh) {
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if (dataFrom === 'bottom') {
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currentItemIndex = this.realTotalData.length;
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const lastItem = this.realTotalData.length ? this.realTotalData.slice(-1)[0] : null;
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if (lastItem && lastItem[cellIndexKey] !== undefined) {
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currentItemIndex = lastItem[cellIndexKey] + 1;
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}
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} else if (dataFrom === 'top') {
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const firstItem = this.realTotalData.length ? this.realTotalData[0] : null;
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if (firstItem && firstItem[cellIndexKey] !== undefined) {
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currentItemIndex = firstItem[cellIndexKey] - list.length;
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}
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}
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} else {
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this._resetDynamicListState();
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}
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for (let i = 0; i < list.length; i++) {
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let item = list[i];
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if (!item || Object.prototype.toString.call(item) !== '[object Object]') {
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item = { item };
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}
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if (item[c.listCellIndexUniqueKey]) {
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item = u.deepCopy(item);
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}
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item[cellIndexKey] = currentItemIndex + i;
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item[c.listCellIndexUniqueKey] = `${this.virtualListKey}-${item[cellIndexKey]}`;
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list[i] = item;
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}
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this.getCellHeightRetryCount.dynamic = 0;
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this.cellHeightMode === Enum.CellHeightMode.Dynamic && this._updateDynamicCellHeight(list, dataFrom);
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},
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// 更新scroll滚动（虚拟列表滚动时触发）
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_updateVirtualScroll(scrollTop, scrollDiff = 0) {
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const currentTimeStamp = u.getTime();
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scrollTop === 0 && this._resetTopRange();
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if (scrollTop !== 0 && this.virtualScrollTimeStamp && currentTimeStamp - this.virtualScrollTimeStamp <= this.virtualScrollDisTimeStamp) {
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return;
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}
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this.virtualScrollTimeStamp = currentTimeStamp;
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let scrollIndex = 0;
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const cellHeightMode = this.cellHeightMode;
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if (cellHeightMode === Enum.CellHeightMode.Fixed) {
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// 如果是固定高度的虚拟列表
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// 计算当前滚动到的cell的index = scrollTop / 虚拟列表cell的固定高度
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scrollIndex = parseInt(scrollTop / this.virtualCellHeight) || 0;
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// 更新顶部和底部占位view的高度（为兼容考虑，顶部采用transformY的方式占位)
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this._updateFixedTopRangeIndex(scrollIndex);
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this._updateFixedBottomRangeIndex(scrollIndex);
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} else if(cellHeightMode === Enum.CellHeightMode.Dynamic) {
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// 如果是不固定高度的虚拟列表
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// 当前滚动的方向
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const scrollDirection = scrollDiff > 0 ? 'top' : 'bottom';
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// 视图区域的高度
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const rangePageHeight = this.virtualRangePageHeight;
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// 顶部视图区域外的高度（顶部不需要渲染而是需要占位部分的高度）
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const topRangePageOffset = scrollTop - rangePageHeight;
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// 底部视图区域外的高度（底部不需要渲染而是需要占位部分的高度）
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const bottomRangePageOffset = scrollTop + this.finalVirtualPageHeight + rangePageHeight;
|
||
|
||
let virtualBottomRangeIndex = 0;
|
||
let virtualPlaceholderBottomHeight = 0;
|
||
let reachedLimitBottom = false;
|
||
const heightCacheList = this.virtualHeightCacheList;
|
||
const lastHeightCache = !!heightCacheList ? heightCacheList.slice(-1)[0] : null;
|
||
|
||
let startTopRangeIndex = this.virtualTopRangeIndex;
|
||
// 如果是向底部滚动（顶部占位的高度不断增大，顶部的实际渲染cell数量不断减少）
|
||
if (scrollDirection === 'bottom') {
|
||
// 从顶部视图边缘的cell的位置开始向后查找
|
||
for (let i = startTopRangeIndex; i < heightCacheList.length; i++){
|
||
const heightCacheItem = heightCacheList[i];
|
||
// 如果查找到某个cell对应的totalHeight大于顶部视图区域外的高度，则此cell为顶部视图边缘的cell
|
||
if (heightCacheItem && heightCacheItem.totalHeight > topRangePageOffset) {
|
||
// 记录顶部视图边缘cell的index并更新顶部占位区域的高度并停止继续查找
|
||
this.virtualTopRangeIndex = i;
|
||
this.virtualPlaceholderTopHeight = heightCacheItem.lastTotalHeight;
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
// 如果是向顶部滚动（顶部占位的高度不断减少，顶部的实际渲染cell数量不断增加）
|
||
let topRangeMatched = false;
|
||
// 从顶部视图边缘的cell的位置开始向前查找
|
||
for (let i = startTopRangeIndex; i >= 0; i--){
|
||
const heightCacheItem = heightCacheList[i];
|
||
// 如果查找到某个cell对应的totalHeight小于顶部视图区域外的高度，则此cell为顶部视图边缘的cell
|
||
if (heightCacheItem && heightCacheItem.totalHeight < topRangePageOffset) {
|
||
// 记录顶部视图边缘cell的index并更新顶部占位区域的高度并停止继续查找
|
||
this.virtualTopRangeIndex = i;
|
||
this.virtualPlaceholderTopHeight = heightCacheItem.lastTotalHeight;
|
||
topRangeMatched = true;
|
||
break;
|
||
}
|
||
}
|
||
// 如果查找不到，则认为顶部占位高度为0了，顶部cell不需要继续复用，重置topRangeIndex和placeholderTopHeight
|
||
!topRangeMatched && this._resetTopRange();
|
||
}
|
||
// 从顶部视图边缘的cell的位置开始向后查找
|
||
for (let i = this.virtualTopRangeIndex; i < heightCacheList.length; i++){
|
||
const heightCacheItem = heightCacheList[i];
|
||
// 如果查找到某个cell对应的totalHeight大于底部视图区域外的高度，则此cell为底部视图边缘的cell
|
||
if (heightCacheItem && heightCacheItem.totalHeight > bottomRangePageOffset) {
|
||
// 记录底部视图边缘cell的index并更新底部占位区域的高度并停止继续查找
|
||
virtualBottomRangeIndex = i;
|
||
virtualPlaceholderBottomHeight = lastHeightCache.totalHeight - heightCacheItem.totalHeight;
|
||
reachedLimitBottom = true;
|
||
break;
|
||
}
|
||
}
|
||
if (!reachedLimitBottom || this.virtualBottomRangeIndex === 0) {
|
||
this.virtualBottomRangeIndex = this.realTotalData.length ? this.realTotalData.length - 1 : this.pageSize;
|
||
this.virtualPlaceholderBottomHeight = 0;
|
||
} else {
|
||
this.virtualBottomRangeIndex = virtualBottomRangeIndex;
|
||
this.virtualPlaceholderBottomHeight = virtualPlaceholderBottomHeight;
|
||
}
|
||
this._updateVirtualList();
|
||
}
|
||
},
|
||
// 更新fixedCell模式下topRangeIndex&placeholderTopHeight
|
||
_updateFixedTopRangeIndex(scrollIndex) {
|
||
let virtualTopRangeIndex = this.virtualCellHeight === 0 ? 0 : scrollIndex - (parseInt(this.finalVirtualPageHeight / this.virtualCellHeight) || 1) * this.preloadPage;
|
||
virtualTopRangeIndex *= this.virtualListCol;
|
||
virtualTopRangeIndex = Math.max(0, virtualTopRangeIndex);
|
||
this.virtualTopRangeIndex = virtualTopRangeIndex;
|
||
this.virtualPlaceholderTopHeight = (virtualTopRangeIndex / this.virtualListCol) * this.virtualCellHeight;
|
||
},
|
||
// 更新fixedCell模式下bottomRangeIndex&placeholderBottomHeight
|
||
_updateFixedBottomRangeIndex(scrollIndex) {
|
||
let virtualBottomRangeIndex = this.virtualCellHeight === 0 ? this.pageSize : scrollIndex + (parseInt(this.finalVirtualPageHeight / this.virtualCellHeight) || 1) * (this.preloadPage + 1);
|
||
virtualBottomRangeIndex *= this.virtualListCol;
|
||
virtualBottomRangeIndex = Math.min(this.realTotalData.length, virtualBottomRangeIndex);
|
||
this.virtualBottomRangeIndex = virtualBottomRangeIndex;
|
||
this.virtualPlaceholderBottomHeight = (this.realTotalData.length - virtualBottomRangeIndex) * this.virtualCellHeight / this.virtualListCol;
|
||
this._updateVirtualList();
|
||
},
|
||
// 更新virtualList
|
||
_updateVirtualList() {
|
||
const shouldUpdateList = this.updateVirtualListFromDataChange || (this.lastVirtualTopRangeIndex !== this.virtualTopRangeIndex || this.lastVirtualBottomRangeIndex !== this.virtualBottomRangeIndex);
|
||
if (shouldUpdateList) {
|
||
this.updateVirtualListFromDataChange = false;
|
||
this.lastVirtualTopRangeIndex = this.virtualTopRangeIndex;
|
||
this.lastVirtualBottomRangeIndex = this.virtualBottomRangeIndex;
|
||
this.virtualList = this.realTotalData.slice(this.virtualTopRangeIndex, this.virtualBottomRangeIndex + 1);
|
||
}
|
||
},
|
||
// 重置动态cell模式下的高度缓存数据、虚拟列表和滚动状态
|
||
_resetDynamicListState(resetVirtualList = false) {
|
||
this.virtualHeightCacheList = [];
|
||
if (resetVirtualList) {
|
||
this.virtualList = [];
|
||
}
|
||
this.virtualTopRangeIndex = 0;
|
||
this.virtualPlaceholderTopHeight = 0;
|
||
},
|
||
// 重置topRangeIndex和placeholderTopHeight
|
||
_resetTopRange() {
|
||
this.virtualTopRangeIndex = 0;
|
||
this.virtualPlaceholderTopHeight = 0;
|
||
this._updateVirtualList();
|
||
},
|
||
// 检测虚拟列表当前滚动位置，如发现滚动位置不正确则重新计算虚拟列表相关参数(为解决在App中可能出现的长时间进入后台后打开App白屏的问题)
|
||
_checkVirtualListScroll() {
|
||
if (this.finalUseVirtualList) {
|
||
this.$nextTick(() => {
|
||
this._getNodeClientRect('.zp-paging-touch-view').then(node => {
|
||
const currentTop = node ? node[0].top : 0;
|
||
if (!node || (currentTop === this.pagingOrgTop && this.virtualPlaceholderTopHeight !== 0)) {
|
||
this._updateVirtualScroll(0);
|
||
}
|
||
});
|
||
})
|
||
}
|
||
},
|
||
// 获取对应index的虚拟列表cell节点信息
|
||
_getVirtualCellNodeByIndex(index) {
|
||
let inDom = this.finalUseInnerList;
|
||
// 在vue3+(微信小程序或QQ小程序)中，使用非内置列表写法时，若z-paging在swiper-item内存在无法获取slot插入的cell高度的问题
|
||
// 通过uni.createSelectorQuery().in(this.$parent)来解决此问题
|
||
// #ifdef VUE3
|
||
// #ifdef MP-WEIXIN || MP-QQ
|
||
if (this.forceCloseInnerList && this.virtualInSwiperSlot) {
|
||
inDom = this.$parent;
|
||
}
|
||
// #endif
|
||
// #endif
|
||
return this._getNodeClientRect(`#${this.fianlVirtualCellIdPrefix}-${index}`, inDom);
|
||
},
|
||
// 处理使用内置列表时点击了cell事件
|
||
_innerCellClick(item, index) {
|
||
this.$emit('innerCellClick', item, index);
|
||
}
|
||
}
|
||
}
|