Stirling-PDF/src/main/resources/static/js/multitool/ImageHighlighter.js

class ImageHiglighter {
    imageHighlighter;
    constructor(id) {
        this.imageHighlighter = document.getElementById(id);
        this.imageHighlightCallback = this.imageHighlightCallback.bind(this);

        var styleElement = document.createElement('link');
        styleElement.rel = 'stylesheet';
        styleElement.href = 'css/imageHighlighter.css'

        document.head.appendChild(styleElement);

        this.imageHighlighter.onclick = () => {
            this.imageHighlighter.childNodes.forEach((child) => {
                child.classList.add('remove');
                setTimeout(() => {
                    this.imageHighlighter.removeChild(child);
                }, 100)
            })
        }
    }

    imageHighlightCallback(highlightEvent) {
        var bigImg = document.createElement('img');
        bigImg.onclick = (imageClickEvent) => {
            // This prevents the highlighter's onClick from closing the image when clicking
            // on the image instead of next to it.
            imageClickEvent.preventDefault();
            imageClickEvent.stopPropagation();
        };
        bigImg.src = highlightEvent.target.src;
        this.imageHighlighter.appendChild(bigImg);
    };

    setActions() {
        // not needed in this case
    }

    adapt(div) {
        const img = div.querySelector('.page-image');
        img.addEventListener('click', this.imageHighlightCallback)
        return div;
    }
}

export default ImageHiglighter;