Github Better Diff

A userscript that adds a button to make the diff better

Versión del día 3/7/2019. Echa un vistazo a la versión más reciente.

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Necesitará instalar una extensión como Tampermonkey para instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==UserScript==
// @name        Github Better Diff
// @description A userscript that adds a button to make the diff better
// @license     MIT
// @author      Marco Pelegrini
// @namespace   https://github.com/marcopelegrini
// @version     2.0.0
// @include     https://github.com/*
// @exclude     https://github.com/*/*.diff
// @exclude     https://github.com/*/*.patch
// @run-at      document-idle
// @grant       GM.addStyle
// @grant       GM_addStyle
// @icon        https://github.githubassets.com/pinned-octocat.svg
// ==/UserScript==

(function () {

    let bdAuto = JSON.parse(localStorage.bdAuto || true);
    let bdExpandDeleted = JSON.parse(localStorage.bdExpandDeleted || false);

    //console.log('BetterDiff Auto: ' + bdAuto);
    //console.log('BetterDiff Expand deleted: ' + bdExpandDeleted);

    function addButton() {
        let e;
        if (/\/pull\/\d*\/(files|commits)/.test(location.href) && (e = document.querySelector('#files_bucket .pr-toolbar .diffbar > .float-right'))) {
            let r = e.querySelector('.GithubFixDiffButton');
            if (r) {
                r.parentElement.removeChild(r)
            }

            let betterDiffContainer = document.createElement('details');
            betterDiffContainer.classList.add('details-reset', 'details-overlay', 'position-relative', 'float-left');

            let detailsButton = document.createElement('summary');
            detailsButton.classList.add('btn', 'btn-sm', 'select-menu-button');
            detailsButton.style.cssFloat = 'inherit';
            detailsButton.appendChild(document.createTextNode('Better Diff '));

            betterDiffContainer.appendChild(detailsButton);

            let popupDiv = document.createElement('div');
            popupDiv.classList.add('Popover', 'js-diff-settings', 'mt-2', 'pt-1');
            popupDiv.style.left = '-35px';
            popupDiv.innerHTML += "" +
                "<div class='Popover-message text-left p-3 mx-auto Box box-shadow-large'>" +
                "   <h5 class='mb-2'>" +
                "        <input type='checkbox' id='bd-auto' name='bd-auto' value='1' " + (bdAuto ? "checked='checked'" : "") + ">" +
                "        &nbsp;Execute automatically" +
                "   </h5>" +
                "   <h5 class='mb-2'>Deleted files content</h5>" +
                "   <div class='BtnGroup d-flex flex-content-stretch js-diff-style-toggle'>" +
                "       <label class='flex-auto btn btn-sm BtnGroup-item text-center " + (bdExpandDeleted ? "'" : "selected'") + ">" +
                "           <input class='sr-only' value='hide' name='bd-expand-deleted' type='radio' " + (bdExpandDeleted ? '' : "checked='checked'") + ">" +
                "           Hide" +
                "       </label>" +
                "       <label class='flex-auto btn btn-sm BtnGroup-item text-center " + (bdExpandDeleted ? "selected'" : "'") + ">" +
                "           <input class='sr-only' value='expand' name='bd-expand-deleted' type='radio' " + (bdExpandDeleted ? "checked='checked'" : "") + ">" +
                "           Expand" +
                "       </label>" +
                "   </div>" +
                "</div>";
            betterDiffContainer.appendChild(popupDiv);

            let g = document.createElement('div');
            g.classList.add('GithubFixDiffButton', 'diffbar-item');
            g.appendChild(betterDiffContainer);

            let runButton = document.createElement('a');
            runButton.setAttribute('id', 'bdRun');
            runButton.classList.add('social-count');
            runButton.appendChild(document.createTextNode('▶'));
            runButton.addEventListener('click', applyBetterDiff, false);

            if (!bdAuto) {
                detailsButton.classList.add('btn-with-count');
            } else {
                runButton.style.display = "none";
            }

            g.appendChild(runButton);

            e.insertBefore(g, e.firstChild);

            document.getElementById('bd-auto').addEventListener('change', function (e) {
                //console.log('BetterDiff Auto changed: ' + e.target.checked);
                localStorage.bdAuto = e.target.checked;
                if (e.target.checked) {
                    runButton.style.display = "none";
                    detailsButton.classList.remove('btn-with-count');
                } else {
                    runButton.style.display = "block";
                    detailsButton.classList.add('btn-with-count');
                }
            }, false);

            document.getElementsByName('bd-expand-deleted').forEach(function (e) {
                e.addEventListener("click", function () {
                    let bdExpandDeleted = e.value === 'expand';
                    localStorage.bdExpandDeleted = bdExpandDeleted;
                    //console.log('BetterDiff Expand deleted changed: ' + bdExpandDeleted);
                });
            });
        }
    }

    function applyBetterDiff() {
        setTimeout(function () {
            // Fix deleted
            Array.from(document.querySelectorAll('.js-diff-load-container'))
                .filter(e => {
                    let diffReason = e.querySelector('.hidden-diff-reason');
                    return diffReason != null && diffReason.innerHTML.includes('This file was deleted');
                })
                .forEach(e => {
                    let content = e.parentElement.parentElement;
                    content.querySelector('.file-header').querySelector('.diffstat.tooltipped.tooltipped-e').innerHTML = 'DELETED';
                    e.style.display = "none";
                });

            // Fix renamed
            Array.from(document.querySelectorAll('.data.highlight.empty'))
                .forEach(e => {
                    let content = e.parentElement;
                    content.style.display = "none";
                    content.parentElement.querySelector('.file-header').querySelector('.diffstat.tooltipped.tooltipped-e').innerHTML = 'RENAMED'
                });

            // Expand large files
            Array.from(document.querySelectorAll('.js-diff-load-container'))
                .forEach(container => {
                    let querySelector = container.querySelector('.load-diff-button');
                    if (querySelector){
                        querySelector.click()
                    }
                });
        }, 100);
    }

    function whenSettled(cb, ms) {
        function isSettled() {
            waiter = last = null;
            cb.apply(self, args);
        }

        ms = ms || 100;
        let last, waiter, self, args;

        return function () {
            self = this;
            args = arguments;
            if (waiter) clearTimeout(waiter);
            waiter = setTimeout(isSettled, ms);
        };
    }

    function initObserver() {
        let observer = new MutationObserver(function (mutations) {
            setTimeout(process.bind(null, mutations), 0);
        });

        function process(mutations) {
            console.log(mutations);
            for (var m = 0, ml = mutations.length; m < ml; m++) {
                var mutation = mutations[m];
                console.log(mutation);
                // if (mutation.type === "childList") {
                //     for (var n = 0, nodes = mutation.addedNodes, nl = nodes.length; n < nl; n++) {
                //         var node = nodes[n];
                //         if (node.localName === "iframe" && iframeIsDynamic(node)) {
                //             addDocumentStylesToIFrame(node);
                //         }
                //     }
                // }
            }
        }

        observer.start = function () {
            // will be ignored by browser if already observing
            observer.observe(document, {childList: true, subtree: true});
        }
    }

    initObserver();

    //document.addEventListener('DOMNodeInsertedIntoDocument', function () {
    //    console.log("DOMNodeInsertedIntoDocument");
    //    if (bdAuto) {
    //        whenSettled(applyBetterDiff);
    //    }
    //}, true);

    // Init
    addButton();

    if (bdAuto) {
        applyBetterDiff();
    }

     // Pjax
     document.addEventListener('pjax:end', function() {
         console.log('BetterDiff - pjax:end');
         if (bdAuto) {
             console.log('BetterDiff - applying');
             setTimeout(function () {
                 applyBetterDiff();
             }, 100);
         }
     });

})();