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refactor(web): asset grid state (#3513)

* refactor(web): asset grid state

* fix: multi-select across time buckets

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>
This commit is contained in:
Jason Rasmussen 2023-08-02 21:57:11 -04:00 committed by GitHub
parent 050ee91289
commit 28ab1d4551
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 271 additions and 329 deletions

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@ -19,7 +19,7 @@
const assetGridState = get(assetStore);
for (const bucket of assetGridState.buckets) {
await assetStore.getAssetsByBucket(bucket.bucketDate, BucketPosition.Unknown);
await assetStore.loadBucket(bucket.bucketDate, BucketPosition.Unknown);
for (const asset of bucket.assets) {
assetInteractionStore.addAssetToMultiselectGroup(asset);
}

View File

@ -60,7 +60,7 @@
$: {
if (actualBucketHeight && actualBucketHeight != 0 && actualBucketHeight != bucketHeight) {
const heightDelta = assetStore.updateBucketHeight(bucketDate, actualBucketHeight);
const heightDelta = assetStore.updateBucket(bucketDate, actualBucketHeight);
if (heightDelta !== 0) {
scrollTimeline(heightDelta);
}

View File

@ -4,7 +4,7 @@
import { locale } from '$lib/stores/preferences.store';
import { formatGroupTitle, splitBucketIntoDateGroups } from '$lib/utils/timeline-util';
import type { UserResponseDto } from '@api';
import { api, AssetCountByTimeBucketResponseDto, AssetResponseDto, TimeGroupEnum } from '@api';
import { AssetResponseDto, TimeGroupEnum, api } from '@api';
import { DateTime } from 'luxon';
import { onDestroy, onMount } from 'svelte';
import AssetViewer from '../asset-viewer/asset-viewer.svelte';
@ -17,13 +17,13 @@
import AssetDateGroup from './asset-date-group.svelte';
import MemoryLane from './memory-lane.svelte';
import { AppRoute } from '$lib/constants';
import { goto } from '$app/navigation';
import { browser } from '$app/environment';
import { goto } from '$app/navigation';
import { AppRoute } from '$lib/constants';
import type { AssetInteractionStore } from '$lib/stores/asset-interaction.store';
import type { AssetStore } from '$lib/stores/assets.store';
import { isSearchEnabled } from '$lib/stores/search.store';
import ShowShortcuts from '../shared-components/show-shortcuts.svelte';
import type { AssetStore } from '$lib/stores/assets.store';
import type { AssetInteractionStore } from '$lib/stores/asset-interaction.store';
export let user: UserResponseDto | undefined = undefined;
export let isAlbumSelectionMode = false;
@ -39,14 +39,13 @@
let viewportHeight = 0;
let viewportWidth = 0;
let assetGridElement: HTMLElement;
let bucketInfo: AssetCountByTimeBucketResponseDto;
let showShortcuts = false;
const onKeyboardPress = (event: KeyboardEvent) => handleKeyboardPress(event);
onMount(async () => {
document.addEventListener('keydown', onKeyboardPress);
const { data: assetCountByTimebucket } = await api.assetApi.getAssetCountByTimeBucket({
const { data: timeBuckets } = await api.assetApi.getAssetCountByTimeBucket({
getAssetCountByTimeBucketDto: {
timeGroup: TimeGroupEnum.Month,
userId: user?.id,
@ -54,26 +53,7 @@
},
});
bucketInfo = assetCountByTimebucket;
assetStore.setInitialState(viewportHeight, viewportWidth, assetCountByTimebucket, user?.id);
// Get asset bucket if bucket height is smaller than viewport height
let bucketsToFetchInitially: string[] = [];
let initialBucketsHeight = 0;
$assetStore.buckets.every((bucket) => {
if (initialBucketsHeight < viewportHeight) {
initialBucketsHeight += bucket.bucketHeight;
bucketsToFetchInitially.push(bucket.bucketDate);
return true;
} else {
return false;
}
});
bucketsToFetchInitially.forEach((bucketDate) => {
assetStore.getAssetsByBucket(bucketDate, BucketPosition.Visible);
});
assetStore.init({ width: viewportHeight, height: viewportWidth }, timeBuckets.buckets, user?.id);
});
onDestroy(() => {
@ -81,7 +61,7 @@
document.removeEventListener('keydown', onKeyboardPress);
}
assetStore.setInitialState(0, 0, { totalCount: 0, buckets: [] }, undefined);
assetStore.init({ width: 0, height: 0 }, [], undefined);
});
const handleKeyboardPress = (event: KeyboardEvent) => {
@ -113,7 +93,7 @@
const target = el.firstChild as HTMLElement;
if (target) {
const bucketDate = target.id.split('_')[1];
assetStore.getAssetsByBucket(bucketDate, event.detail.position);
assetStore.loadBucket(bucketDate, event.detail.position);
}
}
@ -122,14 +102,14 @@
}
const navigateToPreviousAsset = async () => {
const prevAsset = await assetStore.getAdjacentAsset($viewingAsset.id, 'previous');
const prevAsset = await assetStore.getPreviousAssetId($viewingAsset.id);
if (prevAsset) {
assetViewingStore.setAssetId(prevAsset);
}
};
const navigateToNextAsset = async () => {
const nextAsset = await assetStore.getAdjacentAsset($viewingAsset.id, 'next');
const nextAsset = await assetStore.getNextAssetId($viewingAsset.id);
if (nextAsset) {
assetViewingStore.setAssetId(nextAsset);
}
@ -234,8 +214,12 @@
assetInteractionStore.clearAssetSelectionCandidates();
if ($assetSelectionStart && rangeSelection) {
let startBucketIndex = $assetStore.loadedAssets[$assetSelectionStart.id];
let endBucketIndex = $assetStore.loadedAssets[asset.id];
let startBucketIndex = $assetStore.getBucketIndexByAssetId($assetSelectionStart.id);
let endBucketIndex = $assetStore.getBucketIndexByAssetId(asset.id);
if (startBucketIndex === null || endBucketIndex === null) {
return;
}
if (endBucketIndex < startBucketIndex) {
[startBucketIndex, endBucketIndex] = [endBucketIndex, startBucketIndex];
@ -244,7 +228,7 @@
// Select/deselect assets in all intermediate buckets
for (let bucketIndex = startBucketIndex + 1; bucketIndex < endBucketIndex; bucketIndex++) {
const bucket = $assetStore.buckets[bucketIndex];
await assetStore.getAssetsByBucket(bucket.bucketDate, BucketPosition.Unknown);
await assetStore.loadBucket(bucket.bucketDate, BucketPosition.Unknown);
for (const asset of bucket.assets) {
if (deselect) {
assetInteractionStore.removeAssetFromMultiselectGroup(asset);
@ -308,7 +292,7 @@
<ShowShortcuts on:close={() => (showShortcuts = !showShortcuts)} />
{/if}
{#if bucketInfo && viewportHeight && $assetStore.timelineHeight > viewportHeight}
{#if viewportHeight && $assetStore.initialized && $assetStore.timelineHeight > viewportHeight}
<Scrollbar
{assetStore}
scrollbarHeight={viewportHeight}
@ -335,9 +319,7 @@
{#each $assetStore.buckets as bucket, bucketIndex (bucketIndex)}
<IntersectionObserver
on:intersected={intersectedHandler}
on:hidden={async () => {
await assetStore.cancelBucketRequest(bucket.cancelToken, bucket.bucketDate);
}}
on:hidden={() => assetStore.cancelBucket(bucket)}
let:intersecting
top={750}
bottom={750}

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@ -1,4 +1,7 @@
import type { AssetResponseDto } from '@api';
import { api, AssetCountByTimeBucket, AssetResponseDto } from '@api';
import { writable } from 'svelte/store';
import type { AssetStore } from '../stores/assets.store';
import { handleError } from '../utils/handle-error';
export enum BucketPosition {
Above = 'above',
@ -7,6 +10,17 @@ export enum BucketPosition {
Unknown = 'unknown',
}
export interface Viewport {
width: number;
height: number;
}
interface AssetLookup {
bucket: AssetBucket;
bucketIndex: number;
assetIndex: number;
}
export class AssetBucket {
/**
* The DOM height of the bucket in pixel
@ -15,44 +29,220 @@ export class AssetBucket {
bucketHeight!: number;
bucketDate!: string;
assets!: AssetResponseDto[];
cancelToken!: AbortController;
cancelToken!: AbortController | null;
position!: BucketPosition;
}
export class AssetGridState {
/**
* The total height of the timeline in pixel
* This value is first estimated by the number of asset and later is corrected as the user scroll
*/
const THUMBNAIL_HEIGHT = 235;
export class AssetGridState implements AssetStore {
private store$ = writable(this);
private assetToBucket: Record<string, AssetLookup> = {};
private viewport: Viewport = { width: 0, height: 0 };
private userId: string | undefined;
initialized = false;
timelineHeight = 0;
/**
* The fixed viewport height in pixel
*/
viewportHeight = 0;
/**
* The fixed viewport width in pixel
*/
viewportWidth = 0;
/**
* List of bucket information
*/
buckets: AssetBucket[] = [];
/**
* Total assets that have been loaded
*/
assets: AssetResponseDto[] = [];
/**
* Total assets that have been loaded along with additional data
*/
loadedAssets: Record<string, number> = {};
subscribe = this.store$.subscribe;
/**
* User that owns assets
*/
userId: string | undefined;
init(viewport: Viewport, buckets: AssetCountByTimeBucket[], userId: string | undefined) {
this.initialized = false;
this.assets = [];
this.assetToBucket = {};
this.buckets = [];
this.viewport = viewport;
this.userId = userId;
this.buckets = buckets.map((bucket) => {
const unwrappedWidth = (3 / 2) * bucket.count * THUMBNAIL_HEIGHT * (7 / 10);
const rows = Math.ceil(unwrappedWidth / this.viewport.width);
const height = rows * THUMBNAIL_HEIGHT;
return {
bucketDate: bucket.timeBucket,
bucketHeight: height,
assets: [],
cancelToken: null,
position: BucketPosition.Unknown,
};
});
this.timelineHeight = this.buckets.reduce((acc, b) => acc + b.bucketHeight, 0);
this.emit(false);
let height = 0;
for (const bucket of this.buckets) {
if (height < this.viewport.height) {
height += bucket.bucketHeight;
this.loadBucket(bucket.bucketDate, BucketPosition.Visible);
continue;
}
break;
}
this.initialized = true;
}
getBucketByDate(bucketDate: string): AssetBucket | null {
return this.buckets.find((bucket) => bucket.bucketDate === bucketDate) || null;
}
getBucketInfoForAssetId(assetId: string) {
return this.assetToBucket[assetId] || null;
}
getBucketIndexByAssetId(assetId: string) {
return this.assetToBucket[assetId]?.bucketIndex ?? null;
}
async loadBucket(bucketDate: string, position: BucketPosition): Promise<void> {
try {
const bucket = this.getBucketByDate(bucketDate);
if (!bucket) {
return;
}
bucket.position = position;
if (bucket.assets.length !== 0) {
this.emit(false);
return;
}
bucket.cancelToken = new AbortController();
const { data: assets } = await api.assetApi.getAssetByTimeBucket(
{
getAssetByTimeBucketDto: {
timeBucket: [bucketDate],
userId: this.userId,
withoutThumbs: true,
},
},
{ signal: bucket.cancelToken.signal },
);
bucket.assets = assets;
this.emit(true);
} catch (error) {
handleError(error, 'Failed to load assets');
}
}
cancelBucket(bucket: AssetBucket) {
bucket.cancelToken?.abort();
}
updateBucket(bucketDate: string, height: number) {
const bucket = this.getBucketByDate(bucketDate);
if (!bucket) {
return 0;
}
const delta = height - bucket.bucketHeight;
const scrollTimeline = bucket.position == BucketPosition.Above;
bucket.bucketHeight = height;
bucket.position = BucketPosition.Unknown;
this.timelineHeight += delta;
this.emit(false);
return scrollTimeline ? delta : 0;
}
updateAsset(assetId: string, isFavorite: boolean) {
const asset = this.assets.find((asset) => asset.id === assetId);
if (!asset) {
return;
}
asset.isFavorite = isFavorite;
this.emit(false);
}
removeAsset(assetId: string) {
for (let i = 0; i < this.buckets.length; i++) {
const bucket = this.buckets[i];
for (let j = 0; j < bucket.assets.length; j++) {
const asset = bucket.assets[j];
if (asset.id !== assetId) {
continue;
}
bucket.assets.splice(j, 1);
if (bucket.assets.length === 0) {
this.buckets.splice(i, 1);
}
this.emit(true);
return;
}
}
}
async getPreviousAssetId(assetId: string): Promise<string | null> {
const info = this.getBucketInfoForAssetId(assetId);
if (!info) {
return null;
}
const { bucket, assetIndex, bucketIndex } = info;
if (assetIndex !== 0) {
return bucket.assets[assetIndex - 1].id;
}
if (bucketIndex === 0) {
return null;
}
const previousBucket = this.buckets[bucketIndex - 1];
await this.loadBucket(previousBucket.bucketDate, BucketPosition.Unknown);
return previousBucket.assets.at(-1)?.id || null;
}
async getNextAssetId(assetId: string): Promise<string | null> {
const info = this.getBucketInfoForAssetId(assetId);
if (!info) {
return null;
}
const { bucket, assetIndex, bucketIndex } = info;
if (assetIndex !== bucket.assets.length - 1) {
return bucket.assets[assetIndex + 1].id;
}
if (bucketIndex === this.buckets.length - 1) {
return null;
}
const nextBucket = this.buckets[bucketIndex + 1];
await this.loadBucket(nextBucket.bucketDate, BucketPosition.Unknown);
return nextBucket.assets[0]?.id || null;
}
private emit(recalculate: boolean) {
if (recalculate) {
this.assets = this.buckets.flatMap(({ assets }) => assets);
const assetToBucket: Record<string, AssetLookup> = {};
for (let i = 0; i < this.buckets.length; i++) {
const bucket = this.buckets[i];
for (let j = 0; j < bucket.assets.length; j++) {
const asset = bucket.assets[j];
assetToBucket[asset.id] = { bucket, bucketIndex: i, assetIndex: j };
}
}
this.assetToBucket = assetToBucket;
}
this.store$.update(() => this);
}
}

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@ -1,268 +1,38 @@
import { AssetGridState, BucketPosition } from '$lib/models/asset-grid-state';
import { api, AssetCountByTimeBucketResponseDto, AssetResponseDto } from '@api';
import { writable } from 'svelte/store';
import { AssetBucket, AssetGridState, BucketPosition, Viewport } from '$lib/models/asset-grid-state';
import type { AssetCountByTimeBucket } from '@api';
export interface AssetStore {
setInitialState: (
viewportHeight: number,
viewportWidth: number,
data: AssetCountByTimeBucketResponseDto,
userId: string | undefined,
) => void;
getAssetsByBucket: (bucket: string, position: BucketPosition) => Promise<void>;
updateBucketHeight: (bucket: string, actualBucketHeight: number) => number;
cancelBucketRequest: (token: AbortController, bucketDate: string) => Promise<void>;
getAdjacentAsset: (assetId: string, direction: 'next' | 'previous') => Promise<string | null>;
init: (viewport: Viewport, data: AssetCountByTimeBucket[], userId: string | undefined) => void;
// bucket
loadBucket: (bucket: string, position: BucketPosition) => Promise<void>;
updateBucket: (bucket: string, actualBucketHeight: number) => number;
cancelBucket: (bucket: AssetBucket) => void;
// asset
removeAsset: (assetId: string) => void;
updateAsset: (assetId: string, isFavorite: boolean) => void;
// asset navigation
getNextAssetId: (assetId: string) => Promise<string | null>;
getPreviousAssetId: (assetId: string) => Promise<string | null>;
// store
subscribe: (run: (value: AssetGridState) => void, invalidate?: (value?: AssetGridState) => void) => () => void;
}
export function createAssetStore(): AssetStore {
let _loadingBuckets: { [key: string]: boolean } = {};
let _assetGridState = new AssetGridState();
const { subscribe, set, update } = writable(new AssetGridState());
subscribe((state) => {
_assetGridState = state;
});
const _estimateViewportHeight = (assetCount: number, viewportWidth: number): number => {
// Ideally we would use the average aspect ratio for the photoset, however assume
// a normal landscape aspect ratio of 3:2, then discount for the likelihood we
// will be scaling down and coalescing.
const thumbnailHeight = 235;
const unwrappedWidth = (3 / 2) * assetCount * thumbnailHeight * (7 / 10);
const rows = Math.ceil(unwrappedWidth / viewportWidth);
const height = rows * thumbnailHeight;
return height;
};
const refreshLoadedAssets = (state: AssetGridState): void => {
state.loadedAssets = {};
state.buckets.forEach((bucket, bucketIndex) =>
bucket.assets.map((asset) => {
state.loadedAssets[asset.id] = bucketIndex;
}),
);
};
const setInitialState = (
viewportHeight: number,
viewportWidth: number,
data: AssetCountByTimeBucketResponseDto,
userId: string | undefined,
) => {
set({
viewportHeight,
viewportWidth,
timelineHeight: 0,
buckets: data.buckets.map((bucket) => ({
bucketDate: bucket.timeBucket,
bucketHeight: _estimateViewportHeight(bucket.count, viewportWidth),
assets: [],
cancelToken: new AbortController(),
position: BucketPosition.Unknown,
})),
assets: [],
loadedAssets: {},
userId,
});
update((state) => {
state.timelineHeight = state.buckets.reduce((acc, b) => acc + b.bucketHeight, 0);
return state;
});
};
const getAssetsByBucket = async (bucket: string, position: BucketPosition) => {
try {
const currentBucketData = _assetGridState.buckets.find((b) => b.bucketDate === bucket);
if (currentBucketData?.assets && currentBucketData.assets.length > 0) {
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
state.buckets[bucketIndex].position = position;
return state;
});
return;
}
_loadingBuckets = { ..._loadingBuckets, [bucket]: true };
const { data: assets } = await api.assetApi.getAssetByTimeBucket(
{
getAssetByTimeBucketDto: {
timeBucket: [bucket],
userId: _assetGridState.userId,
withoutThumbs: true,
},
},
{ signal: currentBucketData?.cancelToken.signal },
);
_loadingBuckets = { ..._loadingBuckets, [bucket]: false };
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
state.buckets[bucketIndex].assets = assets;
state.buckets[bucketIndex].position = position;
state.assets = state.buckets.flatMap((b) => b.assets);
refreshLoadedAssets(state);
return state;
});
// eslint-disable-next-line @typescript-eslint/no-explicit-any
} catch (e: any) {
if (e.name === 'CanceledError') {
return;
}
console.error('Failed to get asset for bucket ', bucket);
console.error(e);
}
};
const removeAsset = (assetId: string) => {
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.assets.some((a) => a.id === assetId));
const assetIndex = state.buckets[bucketIndex].assets.findIndex((a) => a.id === assetId);
state.buckets[bucketIndex].assets.splice(assetIndex, 1);
if (state.buckets[bucketIndex].assets.length === 0) {
_removeBucket(state.buckets[bucketIndex].bucketDate);
}
state.assets = state.buckets.flatMap((b) => b.assets);
refreshLoadedAssets(state);
return state;
});
};
const _removeBucket = (bucketDate: string) => {
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucketDate);
state.buckets.splice(bucketIndex, 1);
state.assets = state.buckets.flatMap((b) => b.assets);
refreshLoadedAssets(state);
return state;
});
};
const updateBucketHeight = (bucket: string, actualBucketHeight: number): number => {
let scrollTimeline = false;
let heightDelta = 0;
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
// Update timeline height based on the new bucket height
const estimateBucketHeight = state.buckets[bucketIndex].bucketHeight;
heightDelta = actualBucketHeight - estimateBucketHeight;
state.timelineHeight += heightDelta;
scrollTimeline = state.buckets[bucketIndex].position == BucketPosition.Above;
state.buckets[bucketIndex].bucketHeight = actualBucketHeight;
state.buckets[bucketIndex].position = BucketPosition.Unknown;
return state;
});
if (scrollTimeline) {
return heightDelta;
}
return 0;
};
const cancelBucketRequest = async (token: AbortController, bucketDate: string) => {
if (!_loadingBuckets[bucketDate]) {
return;
}
token.abort();
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucketDate);
state.buckets[bucketIndex].cancelToken = new AbortController();
return state;
});
};
const updateAsset = (assetId: string, isFavorite: boolean) => {
update((state) => {
const bucketIndex = state.buckets.findIndex((b) => b.assets.some((a) => a.id === assetId));
const assetIndex = state.buckets[bucketIndex].assets.findIndex((a) => a.id === assetId);
state.buckets[bucketIndex].assets[assetIndex].isFavorite = isFavorite;
state.assets = state.buckets.flatMap((b) => b.assets);
refreshLoadedAssets(state);
return state;
});
};
const _getNextAsset = async (currentBucketIndex: number, assetId: string): Promise<AssetResponseDto | null> => {
const currentBucket = _assetGridState.buckets[currentBucketIndex];
const assetIndex = currentBucket.assets.findIndex(({ id }) => id == assetId);
if (assetIndex === -1) {
return null;
}
if (assetIndex + 1 < currentBucket.assets.length) {
return currentBucket.assets[assetIndex + 1];
}
const nextBucketIndex = currentBucketIndex + 1;
if (nextBucketIndex >= _assetGridState.buckets.length) {
return null;
}
const nextBucket = _assetGridState.buckets[nextBucketIndex];
await getAssetsByBucket(nextBucket.bucketDate, BucketPosition.Unknown);
return nextBucket.assets[0] ?? null;
};
const _getPrevAsset = async (currentBucketIndex: number, assetId: string): Promise<AssetResponseDto | null> => {
const currentBucket = _assetGridState.buckets[currentBucketIndex];
const assetIndex = currentBucket.assets.findIndex(({ id }) => id == assetId);
if (assetIndex === -1) {
return null;
}
if (assetIndex > 0) {
return currentBucket.assets[assetIndex - 1];
}
const prevBucketIndex = currentBucketIndex - 1;
if (prevBucketIndex < 0) {
return null;
}
const prevBucket = _assetGridState.buckets[prevBucketIndex];
await getAssetsByBucket(prevBucket.bucketDate, BucketPosition.Unknown);
return prevBucket.assets[prevBucket.assets.length - 1] ?? null;
};
const getAdjacentAsset = async (assetId: string, direction: 'next' | 'previous'): Promise<string | null> => {
const currentBucketIndex = _assetGridState.loadedAssets[assetId];
if (currentBucketIndex < 0 || currentBucketIndex >= _assetGridState.buckets.length) {
return null;
}
const asset =
direction === 'next'
? await _getNextAsset(currentBucketIndex, assetId)
: await _getPrevAsset(currentBucketIndex, assetId);
return asset?.id ?? null;
};
const store = new AssetGridState();
return {
setInitialState,
getAssetsByBucket,
removeAsset,
updateBucketHeight,
cancelBucketRequest,
getAdjacentAsset,
updateAsset,
subscribe,
init: store.init.bind(store),
loadBucket: store.loadBucket.bind(store),
updateBucket: store.updateBucket.bind(store),
cancelBucket: store.cancelBucket.bind(store),
removeAsset: store.removeAsset.bind(store),
updateAsset: store.updateAsset.bind(store),
getNextAssetId: store.getNextAssetId.bind(store),
getPreviousAssetId: store.getPreviousAssetId.bind(store),
subscribe: store.subscribe,
};
}