Github Better Diff

A userscript that adds a button to make the diff better

目前為 2019-07-03 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

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

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==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);
         }
     });

})();