fchat-rising/chat/preview/helper/local.ts

import { ImagePreviewHelper } from './helper';


export class LocalImagePreviewHelper extends ImagePreviewHelper {
    hide(): void {
        this.visible = false;
        this.url = undefined;
    }


    show(url: string | undefined): void {
        this.visible = true;
        this.url = url;
    }


    setRatio(_ratio: number): void {
        // do nothing
    }


    reactsToSizeUpdates(): boolean {
        return false;
    }


    shouldTrackLoading(): boolean {
        return false;
    }


    usesWebView(): boolean {
        return false;
    }


    match(domainName: string | undefined, url: string | undefined): boolean {
        if ((!domainName) || (!url)) {
            return false;
        }

        return (ImagePreviewHelper.HTTP_TESTER.test(url))
            && ((domainName === 'f-list.net') || (domainName === 'static.f-list.net'));
    }


    renderStyle(): Record<string, any> {
        return this.isVisible()
            ? { backgroundImage: `url(${this.getUrl()})`, display: 'block' }
            : { display: 'none' };
    }
}