Function checkImageSelectors

src/inject/dynamic-theme/modify-css.ts:389–413

(node: Element | Document | ShadowRoot)

let classObserver: MutationObserver | null = null;

export function checkImageSelectors(node: Element | Document | ShadowRoot): void {
    for (const [selector, callbacks] of imageSelectorQueue) {
        if (node.querySelector(selector) || (node instanceof Element && node.matches(selector))) {
            imageSelectorQueue.delete(selector);
            callbacks.forEach((cb) => cb());
        }
    }
    if (!classObserver) {
        classObserver = new MutationObserver((mutations) => {
            mutations.forEach((mutation) => {
                imageSelectorNodeQueue.add(mutation.target as Element);
                if (!imageSelectorQueueFrameId) {
                    imageSelectorQueueFrameId = requestAnimationFrame(() => {
                        imageSelectorNodeQueue.forEach((element) => {
                            checkImageSelectors(element);
                        });
                        imageSelectorNodeQueue.clear();
                        imageSelectorQueueFrameId = null;
                    });
                }
            });
        });
        classObserver.observe(document.documentElement, {attributes: true, attributeFilter: ['class'], subtree: true});
    }
}

export function getBgImageModifier(
    value: string,