Merge pull request #12662 from bluelovers/bluelovers-patch-1-1

}

function selected_gallery_button() {

    var allCurrentButtons = gradioApp().querySelectorAll('[style="display: block;"].tabitem div[id$=_gallery].gradio-gallery .thumbnail-item.thumbnail-small.selected');

    var visibleCurrentButton = null;

    allCurrentButtons.forEach(function(elem) {

        if (elem.parentElement.offsetParent) {

            visibleCurrentButton = elem;

        }

    });

    return visibleCurrentButton;

    return all_gallery_buttons().find(elem => elem.classList.contains('selected')) ?? null;

}

function selected_gallery_index() {

    var buttons = all_gallery_buttons();

    var button = selected_gallery_button();

    var result = -1;

    buttons.forEach(function(v, i) {

        if (v == button) {

            result = i;

        }

    });

    return result;

    return all_gallery_buttons().findIndex(elem => elem.classList.contains('selected'));

}

function extract_image_from_gallery(gallery) {