Repo tree: inline PNG images

Show PNG images inline on the GitHub's file list
Verze ze dne 12. 02. 2020. Zobrazit nejnovější verzi.
Zeptejte se na otázku, přidejte recenzi nebo skript nahlašte.
Wrap lines
// ==UserScript==
// @name         Repo tree: inline PNG images
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Show PNG images inline on the GitHub's file list
// @author       Marcin Warpechowski
// @match        https://github.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const pluginName = 'processed-by-warpech-inline-png-images';

    let scheduledTimeout;

    function findAndApplyChanges() {
        console.log('Running... Repo tree: inline PNG images');
        Array.from(document.querySelectorAll(`table.files.js-navigation-container a.js-navigation-open:not([${pluginName}])`)).forEach((elem) => {
            elem.setAttribute(pluginName, '');
            if (elem.href.endsWith(".png") || elem.href.endsWith(".gif") || elem.href.endsWith(".jpg") || elem.href.endsWith(".jpeg")) {
                const img = document.createElement('img');
                let imgUrl = elem.href + '?raw=true';
                img.setAttribute("src", imgUrl);
                img.style.maxWidth = '100%';

                const imgLink = document.createElement('a');
                imgLink.href = imgUrl;
                imgLink.appendChild(img);
                imgLink.style.display = 'block';
                imgLink.style.padding = '20px';
                img.style.minHeight = '1px';

                const aTr = elem.parentNode.parentNode.parentNode;
                if (aTr.nodeName !== 'TR') {
                    throw new Error("Unexpected HTML structure. Link's parent TR was not found.");
                }

                const tr = document.createElement('tr');
                const td = document.createElement('td');
                td.setAttribute("colspan", aTr.children.length);
                tr.appendChild(td);
                td.appendChild(imgLink);
                tr.style.background = '#eee';

                aTr.parentNode.insertBefore(tr, aTr.nextSibling)
            }
        });
    }

    console.log('Postponing... Repo tree: inline PNG images');
    scheduledTimeout = setTimeout(findAndApplyChanges, 1000);

    const targetNode = document.querySelector("div.application-main");
    const observerOptions = {
        childList: true,
        subtree: true
    }

    const mutationCallback = (mutationList, observer) => {
        mutationList.forEach((mutation) => {
            switch(mutation.type) {
                case 'childList':
                    console.log('Postponing... Repo tree: inline PNG images');
                    clearTimeout(scheduledTimeout);
                    scheduledTimeout = setTimeout(findAndApplyChanges, 1000);
                    break;
            }
        });
    }

    const observer = new MutationObserver(mutationCallback);
    observer.observe(targetNode, observerOptions);
})();