protected raiseLoadMoreData()

in packages/attribute-slicer/src/AttributeSlicer.ts [887:931]

37 lines of code
6 McCabe index (conditional complexity)


	protected raiseLoadMoreData(isNewSearch: boolean): void {
		const item: { result?: PromiseLike<ISlicerItem[]> } = {};
		this.events.raiseEvent(
			"loadMoreData",
			item,
			isNewSearch,
			this.searchString,
		);
		if (item.result) {
			this.loadingMoreData = true;
			const promise: PromiseLike<void | ISlicerItem[]> & {
				cancel?: boolean;
			} = (this.loadPromise = item.result.then(
				(items: ISlicerItem[]) => {
					// if this promise hasn't been cancelled
					if (!promise || !promise.cancel) {
						this.loadPromise = undefined;
						if (isNewSearch) {
							this.data = items;
						} else {
							this.data = this.data.concat(items);
						}

						// make sure we don't need to load more after this,
						// in case it doesn't all fit on the screen
						setTimeout(() => {
							this.checkLoadMoreData();
							if (!this.loadPromise) {
								this.loadingMoreData = false;
							}
						}, 10);

						return items;
					}
				},
				() => {
					// If we are rejected,  we don't  need to clear the data,
					// this just means the retrieval for more data failed, leave the data
					// this.data = [];
					this.loadingMoreData = false;
				},
			));
		}
		this.loadingMoreData = false;
	}