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MOBILE-3833 core: Fix swipe race conditions

main
Noel De Martin 2021-12-21 16:23:09 +01:00
parent 7c33680159
commit 008453d5ab
3 changed files with 26 additions and 50 deletions
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25
src/addons/mod/forum/classes/forum-discussions-swipe-manager.ts
View File

@ -24,29 +24,8 @@ export class AddonModForumDiscussionsSwipeManager
/**
* @inheritdoc
*/
async navigateToNextItem(): Promise<void> {
let delta = -1;
const item = await this.getItemBy(-1);
if (item && this.getSource().isNewDiscussionForm(item)) {
delta--;
}
await this.navigateToItemBy(delta, 'back');
}
/**
* @inheritdoc
*/
async navigateToPreviousItem(): Promise<void> {
let delta = 1;
const item = await this.getItemBy(1);
if (item && this.getSource().isNewDiscussionForm(item)) {
delta++;
}
await this.navigateToItemBy(delta, 'forward');
protected skipItemInSwipe(item: AddonModForumDiscussionItem): boolean {
return this.getSource().isNewDiscussionForm(item);
}
}

25
src/addons/mod/glossary/classes/glossary-entries-swipe-manager.ts
View File

@ -24,29 +24,8 @@ export abstract class AddonModGlossaryEntriesSwipeManager
/**
* @inheritdoc
*/
async navigateToNextItem(): Promise<void> {
let delta = -1;
const item = await this.getItemBy(-1);
if (item && this.getSource().isNewEntryForm(item)) {
delta--;
}
await this.navigateToItemBy(delta, 'back');
}
/**
* @inheritdoc
*/
async navigateToPreviousItem(): Promise<void> {
let delta = 1;
const item = await this.getItemBy(1);
if (item && this.getSource().isNewEntryForm(item)) {
delta++;
}
await this.navigateToItemBy(delta, 'forward');
protected skipItemInSwipe(item: AddonModGlossaryEntryItem): boolean {
return this.getSource().isNewEntryForm(item);
}
}

26
src/core/classes/items-management/swipe-navigation-items-manager.ts
View File

@ -82,7 +82,13 @@ export class CoreSwipeNavigationItemsManager<
* @param animationDirection Animation direction.
*/
protected async navigateToItemBy(delta: number, animationDirection: 'forward' | 'back'): Promise<void> {
const item = await this.getItemBy(delta);
let item: Item | null;
do {
item = await this.getItemBy(delta);
delta += delta > 0 ? 1 : -1;
} while (item && this.skipItemInSwipe(item));
if (!item) {
return;
@ -100,14 +106,15 @@ export class CoreSwipeNavigationItemsManager<
const items = this.getSource().getItems();
// Get selected item.
const index = (this.selectedItem && items?.indexOf(this.selectedItem)) ?? -1;
const selectedIndex = (this.selectedItem && items?.indexOf(this.selectedItem)) ?? -1;
const nextIndex = selectedIndex + delta;
if (index === -1) {
if (selectedIndex === -1 || nextIndex < 0) {
return null;
}
// Get item by delta.
const item = items?.[index + delta] ?? null;
const item = items?.[nextIndex] ?? null;
if (!item && !this.getSource().isCompleted()) {
await this.getSource().load();
@ -118,4 +125,15 @@ export class CoreSwipeNavigationItemsManager<
return item;
}
/**
* Check if an item should be skipped during swipe navigation.
*
* @param item Item.
* @returns Whether to skip this item during swipe navigation.
*/
// eslint-disable-next-line @typescript-eslint/no-unused-vars
protected skipItemInSwipe(item: Item): boolean {
return false;
}
}