stable-diffusion-webui-ux/javascript/generationParams.js

// attaches listeners to the txt2img and img2img galleries to update displayed generation param text when the image changes

let txt2img_gallery,
  img2img_gallery,
  modal = undefined;
onUiUpdate(function () {
  if (!txt2img_gallery) {
    txt2img_gallery = attachGalleryListeners("txt2img");
  }
  if (!img2img_gallery) {
    img2img_gallery = attachGalleryListeners("img2img");
  }
  /*
	if (!modal) {
		modal = gradioApp().getElementById('lightboxModal')
		modalObserver.observe(modal,  { attributes : true, attributeFilter : ['style'] });
	}
	*/
});

let modalObserver = new MutationObserver(function (mutations) {
  mutations.forEach(function (mutationRecord) {
    let selectedTab = gradioApp().querySelector(
      "#tabs div button.selected"
    )?.innerText;
    if (
      mutationRecord.target.style.display === "none" &&
      (selectedTab === "txt2img" || selectedTab === "img2img")
    )
      gradioApp()
        .getElementById(selectedTab + "_generation_info_button")
        ?.click();
  });
});

function attachGalleryListeners(tab_name) {
  var gallery = gradioApp().querySelector("#" + tab_name + "_gallery");
  gallery?.addEventListener("click", () =>
    gradioApp()
      .getElementById(tab_name + "_generation_info_button")
      ?.click()
  );
  gallery?.addEventListener("keydown", (e) => {
    if (e.keyCode == 37 || e.keyCode == 39)
      // left or right arrow
      gradioApp()
        .getElementById(tab_name + "_generation_info_button")
        .click();
  });
  return gallery;
}