This userscript re-implements the "View Image" and "Search by image" buttons into google images.
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// ==UserScript==
// @name View Image
// @namespace https://github.com/bijij/ViewImage
// @version 3.0.0
// @description This userscript re-implements the "View Image" and "Search by image" buttons into google images.
// @author Joshua B
// @run-at document-end
// @include http*://*.google.tld/search*tbm=isch*
// @include http*://*.google.tld/imgres*
// ==/UserScript==
'use strict';
// Determines wether using the redesign or not.
function isRedesign() {
return document.querySelector('.irc_ifr') != null;
}
// Finds the div which contains all required elements
function getContainer(node) {
return node.closest('.irc_c[style*="visibility: visible;"][style*="transform: translate3d(0px, 0px, 0px);"], .irc_c[data-ved]');
}
// Finds and deletes all extension related elements.
function clearExtElements(container) {
// Remove previously generated elements
var oldExtensionElements = container.querySelectorAll('.vi_ext_addon');
for (var element of oldExtensionElements) {
element.remove();
}
}
// Returns the image URL
function findImage(container, redesign) {
var image = null;
if (!redesign) {
image = container.querySelector('img[src]#irc_mi, img[alt^="Image result"][src]:not([src^="https://encrypted-tbn"]).irc_mut, img[src].irc_mi');
} else {
var iframe = container.querySelector('iframe.irc_ifr');
image = iframe.contentDocument.querySelector('img#irc_mi');
}
// Override url for images using base64 embeds
if (image === null || image.src === '' || image.src.startsWith('data')) {
var thumbnail = document.querySelector('img[name="' + container.dataset.itemId + '"]');
if (thumbnail === null) {
// If no thumbnail found, try getting image from URL
var url = new URL(window.location);
var imgLink = url.searchParams.get('imgurl');
if (imgLink) {
image = new Object();
image.src = imgLink;
}
} else {
var meta = thumbnail.closest('.rg_bx').querySelector('.rg_meta');
var metadata = JSON.parse(meta.innerHTML);
image = new Object();
image.src = metadata.ou;
}
}
// If the above doesn't work, use the link in related images to find it
if (image === null || image.src === '' || image.src.startsWith('data')) {
var target_image = container.querySelector('img.target_image');
if (target_image) {
var link = target_image.closest('a');
if (link) {
// Some extensions replace google image links with their original links
if (link.href.match(/^[a-z]+:\/\/(?:www\.)?google\.[^/]*\/imgres\?/)) {
var link_url = new URL(link.href);
var new_imgLink = link_url.searchParams.get('imgurl');
if (new_imgLink) {
image = new Object();
image.src = new_imgLink;
}
} else {
image = new Object();
image.src = link.href;
}
}
}
}
return image;
}
function addViewImageButton(container, image, redesign) {
// get the visit buttonm
var visitButton = redesign ? container.querySelector('a.irc_hol[href]') : container.querySelector('td > a.irc_vpl[href]').parentElement;
// Create the view image button
var viewImgButton = visitButton.cloneNode(true);
viewImgButton.classList.add('vi_ext_addon');
// Set the view image button url
var viewImageLink = redesign ? viewImgButton : viewImgButton.querySelector('a');
viewImageLink.href = image.src;
viewImageLink.setAttribute('target', '_blank');
// Set the view image button text
var viewImageButtonText = viewImgButton.querySelector(redesign ? '.irc_ho' : '.Tl8XHc');
viewImageButtonText.innerText = 'View Image';
// Place the view image button
visitButton.parentElement.insertBefore(viewImgButton, visitButton);
visitButton.parentElement.insertBefore(visitButton, viewImgButton);
}
function addSearchImgButton(container, image, redesign) {
var link = redesign ? container.querySelector('.irc_ft > a.irc_help') : container.querySelector('.irc_dsh > a.irc_hol');
// Create the search by image button
var searchImgButton = link.cloneNode(true);
searchImgButton.classList.add('vi_ext_addon');
// Set the more sizes button text
var searchImgButtonText = searchImgButton.querySelector(redesign ? 'span' : '.irc_ho');
searchImgButtonText.innerText = 'Search by image';
// Set the search by image button url
searchImgButton.href = '/searchbyimage?image_url=' + image.src;
searchImgButton.setAttribute('target', '_blank');
// Place the more sizes button
link.parentElement.insertBefore(searchImgButton, link);
link.parentElement.insertBefore(link, searchImgButton);
}
// Adds links to an object
function addLinks(node) {
// Determine wether redesign or not
var redesign = isRedesign();
// Find the container
var container = getContainer(node);
// Return if no container was found
if (!container)
return;
// Clear any old extension elements
clearExtElements(container);
// Find the image url
var image = findImage(container, redesign);
// Return if image was not found
if (!image)
return;
addViewImageButton(container, image, redesign);
addSearchImgButton(container, image, redesign);
}
// Define the mutation observers
var observer = new MutationObserver(function (mutations) {
for (var mutation of mutations) {
if (mutation.addedNodes && mutation.addedNodes.length > 0) {
for (var node of mutation.addedNodes) {
if (node.classList) {
// Check for new image nodes
if (node.classList.contains('irc_mi') | node.classList.contains('irc_mut') | node.classList.contains('irc_ris')) {
addLinks(node);
}
}
}
}
}
});
observer.observe(document.body, {
childList: true,
subtree: true
});
// inject CSS into document
var customStyle = document.createElement('style');
customStyle.innerText = '.irc_dsh>.irc_hol.vi_ext_addon,.irc_ft>.irc_help.vi_ext_addon{margin: 0 4pt!important}.irc_hol.vi_ext_addon{flex-grow:0!important}';
document.head.appendChild(customStyle);