Skip to content

fix(core): fixed card layout flickering issue (#8476) #8496

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Aug 5, 2022
Merged

fix(core): fixed card layout flickering issue (#8476) #8496

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions libs/core/src/lib/fixed-card-layout/fixed-card-layout.component.spec.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,7 @@ describe('FixedCardLayoutComponent', () => {
}
} as any;

component.fixedCardLayout.updateLayout();
component.fixedCardLayout._onDragDropped(event);
fixture.detectChanges();

Expand Down
37 changes: 22 additions & 15 deletions libs/core/src/lib/fixed-card-layout/fixed-card-layout.component.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ import {
import { FocusKeyManager } from '@angular/cdk/a11y';
import { CdkDrag, CdkDragDrop, CdkDragEnter, CdkDragStart } from '@angular/cdk/drag-drop';
import { Subject, Subscription } from 'rxjs';
import { debounceTime, distinct, filter, takeUntil } from 'rxjs/operators';
import { debounceTime, filter, skip, takeUntil } from 'rxjs/operators';

import { resizeObservable, RtlService, getDocumentFontSize } from '@fundamental-ngx/core/utils';
import { Nullable } from '@fundamental-ngx/core/shared';
Expand Down Expand Up @@ -146,7 +146,7 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange

/** @hidden */
@ViewChild('layout')
_layout: ElementRef;
_layout: ElementRef<HTMLElement>;

/** @hidden */
_cardsArray: CardDefinitionDirective[];
Expand All @@ -158,7 +158,7 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
_cardColumns: CardColumn[];

/** @hidden*/
_containerHeight: number;
_containerHeight = 0;

/** @hidden handles rtl service */
_dir = 'ltr';
Expand All @@ -184,7 +184,7 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
_placeholderMargin: boolean;

/** @hidden */
_listenResize = false;
_listenResize = true;

/** @hidden */
_hiddenCard: Nullable<CardDefinitionDirective>;
Expand Down Expand Up @@ -408,25 +408,28 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
private _listenOnResize(): void {
resizeObservable(this._layout.nativeElement)
.pipe(
filter(() => this._listenResize),
debounceTime(50),
debounceTime(20),
filter(
(entries) => this._listenResize && !!(entries[0].contentRect.height || entries[0].contentRect.width)
),
takeUntil(this._onDestroy$)
)
.subscribe(() => this.updateLayout());
}

/** @hidden Listen card change and distribute cards on column change */
private _listenOnCardsChange(): void {
this._cards.changes.subscribe(() => this._processCards());
this._cards.changes.subscribe(() => {
this._processCards();
this.updateLayout();
});
}

/** @hidden */
private _processCards(): void {
this._cardsArray = this._cards
.toArray()
.sort((firstCard, secondCard) => firstCard.fdCardDef - secondCard.fdCardDef);

this.updateLayout();
}

/** @hidden Distribute cards among columns to arrange them in "Z" flow */
Expand Down Expand Up @@ -455,7 +458,7 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
}
});

this._listenOnCardsSizeChange();
this._listenOnCardsHeightChange();
}

/** @hidden */
Expand Down Expand Up @@ -507,14 +510,18 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
(columnIndex === columnIndexToAddSpace ? spaceToAdd : 0)
);

const prevContainerHeight = this._containerHeight;

// +4px because it's the top & bottom borders of card placeholder
this._containerHeight = Math.ceil(Math.max(...columnsHeights) + 4);

this._changeDetector.detectChanges();
if (this._containerHeight !== prevContainerHeight) {
this._changeDetector.detectChanges();
}
}

/** @hidden */
private _listenOnCardsSizeChange(): void {
private _listenOnCardsHeightChange(): void {
this._cardsSizeChangeSubscription.unsubscribe();
this._cardsSizeChangeSubscription = new Subscription();

Expand All @@ -528,9 +535,9 @@ export class FixedCardLayoutComponent implements OnInit, AfterViewInit, OnChange
this._cardsSizeChangeSubscription.add(
resizeObservable(card.nativeElement)
.pipe(
filter(() => this._listenResize),
distinct((resizeEntry) => resizeEntry[0].contentRect.height),
debounceTime(50)
skip(1),
debounceTime(20),
filter(() => this._listenResize && !!this._layout.nativeElement.clientHeight)
)
.subscribe(() => this._setContainerHeight())
);
Expand Down