Github News Feed Filter

Add filters for Github homepage news feed items

Per 02-07-2014. Zie de nieuwste versie.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey, Greasemonkey of Violentmonkey.

Voor het installeren van scripts heb je een extensie nodig, zoals {tampermonkey_link:Tampermonkey}.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey of Violentmonkey.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey of Userscripts.

Voor het installeren van scripts heb je een extensie nodig, zoals {tampermonkey_link:Tampermonkey}.

Voor het installeren van scripts heb je een gebruikersscriptbeheerder nodig.

(Ik heb al een user script manager, laat me het downloaden!)

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

(Ik heb al een beheerder - laat me doorgaan met de installatie!)

// ==UserScript==
// @name        Github News Feed Filter
// @namespace   https://github.com/jerone/UserScripts
// @description Add filters for Github homepage news feed items
// @author      jerone
// @copyright   2014+, jerone (http://jeroenvanwarmerdam.nl)
// @license     GNU GPLv3
// @homepage    https://github.com/jerone/UserScripts/tree/master/Github_News_Feed_Filter
// @homepageURL https://github.com/jerone/UserScripts/tree/master/Github_News_Feed_Filter
// @include     https://github.com/
// @include     https://github.com/orgs/*/dashboard
// @include     https://github.com/*?tab=activity
// @version     5.2
// @grant       none
// ==/UserScript==
/* global Event */

(function() {

	var FILTERS = [
		{ text: "All News Feed", icon: "octicon-radio-tower", classNames: ["*"] },
		{
			text: "Issues", icon: "octicon-issue-opened", classNames: ["issues_opened", "issues_closed", "issues_reopened", "issues_comment"], subFilters: [
				{ text: "Opened", icon: "octicon-issue-opened", classNames: ["issues_opened"] },
				{ text: "Closed", icon: "octicon-issue-closed", classNames: ["issues_closed"] },
				{ text: "Reopened", icon: "octicon-issue-reopened", classNames: ["issues_reopened"] },
				{ text: "Comments", icon: "octicon-comment-discussion", classNames: ["issues_comment"] }
			]
		},
		{
			text: "Commits", icon: "octicon-git-commit", classNames: ["push", "commit_comment"], subFilters: [
				{ text: "Pushed", icon: "octicon-git-commit", classNames: ["push"] },
				{ text: "Comments", icon: "octicon-comment-discussion", classNames: ["commit_comment"] }
			]
		},
		{
			text: "Pull Requests", icon: "octicon-git-pull-request", classNames: ["pull_request_opened", "pull_request_closed", "pull_request_merged", "pull_request_comment"], subFilters: [
				{ text: "Opened", icon: "octicon-git-pull-request", classNames: ["pull_request_opened"] },
				{ text: "Closed", icon: "octicon-git-pull-request-abandoned", classNames: ["pull_request_closed"] },
				{ text: "Merged", icon: "octicon-git-merge", classNames: ["pull_request_merged"] },
				{ text: "Comments", icon: "octicon-comment-discussion", classNames: ["pull_request_comment"] }
			]
		},
		{
			text: "Repo", icon: "octicon-repo", classNames: ["create", "public", "fork", "branch_create", "branch_delete", "tag_add", "tag_remove", "release", "delete"], subFilters: [
				{ text: "Created", icon: "octicon-repo-create", classNames: ["create"] },
				{ text: "Public", icon: "octicon-repo-push", classNames: ["public"] },
				{ text: "Forked", icon: "octicon-repo-forked", classNames: ["fork"] },
				{
					text: "Branched", icon: "octicon-git-branch", classNames: ["branch_create", "branch_delete"], subFilters: [
						{ text: "Created", icon: "octicon-git-branch-create", classNames: ["branch_create"] },
						{ text: "Deleted", icon: "octicon-git-branch-delete", classNames: ["branch_delete"] }
					]
				},
				{
					text: "Tagged", icon: "octicon-tag", classNames: ["tag_add", "tag_remove"], subFilters: [
						{ text: "Added", icon: "octicon-tag-add", classNames: ["tag_add"] },
						{ text: "Removed", icon: "octicon-tag-remove", classNames: ["tag_remove"] }
					]
				},
				{ text: "Released", icon: "octicon-repo-pull", classNames: ["release"] },
				{ text: "Deleted", icon: "octicon-repo-delete", classNames: ["delete"] }
			]
		},
		{
			text: "User", icon: "octicon-person", classNames: ["watch_started", "member_add", "team_add"], subFilters: [
				{ text: "Starred", icon: "octicon-star", classNames: ["watch_started"] },
				{ text: "Member added", icon: "octicon-person-add", classNames: ["member_add", "team_add"] }
			]
		},
		{ text: "Wiki", icon: "octicon-book", classNames: ["gollum"] },
		{
			text: "Gist", icon: "octicon-gist", classNames: ["gist_created", "gist_updated"], subFilters: [
				{ text: "Created", icon: "octicon-gist-new", classNames: ["gist_created"] },
				{ text: "Updated", icon: "octicon-gist", classNames: ["gist_updated"] }
			]
		}
		// Possible other classes: follow
	];

	function proxy(fn) {
		return function() {
			var that = this;
			return function(e) {
				var args = that.slice(0);  // clone;
				args.unshift(e);  // prepend event;
				fn.apply(this, args);
			};
		}.call([].slice.call(arguments, 1));
	}

	function addFilterMenu(filters, parent, container, sidebar, main) {
		var ul = document.createElement("ul");
		ul.classList.add("filter-list");
		if (!main) {
			ul.classList.add("small");
			ul.style.marginLeft = "10px";
			ul.style.display = "none";
		}
		parent.appendChild(ul);

		filters.forEach(function(subFilter) {
			var li = addFilterMenuItem(subFilter, ul, container, sidebar);

			if (subFilter.subFilters) {
				addFilterMenu(subFilter.subFilters, li, container, sidebar, false);
			}
		});
	}

	function addFilterMenuItem(filter, parent, container, sidebar) {
		var a = document.createElement("a");
		a.classList.add("filter-item");
		a.setAttribute("href", "/");
		a.setAttribute("title", filter.classNames.join(" & "));
		if (filter.classNames[0] === "*") {
			a.classList.add("selected");
			a.style.fontWeight = "bold";
		}

		var s = document.createElement("span");
		s.classList.add("octicon", filter.icon);
		s.style.marginRight = "10px";
		s.style.cssFloat = "left";
		s.style.minWidth = "16px";
		a.appendChild(s);

		var c = document.createElement("span");
		c.classList.add("count");
		c.appendChild(document.createTextNode("0"));
		a.appendChild(c);

		a.appendChild(document.createTextNode(filter.text));

		a.addEventListener("click", proxy(function(e, classNames) {
			e.preventDefault();

			var any = false,
				all = classNames[0] === "*",
				some = function(alert) { return classNames.some(function(cl) { return alert.classList.contains(cl); }); };
			Array.forEach(container.querySelectorAll(".alert"), function(alert) {
				alert.style.display = (all || some(alert)) && (any = true) ? "block" : "none";
			});
			var none = container.querySelector(".no-alerts");
			if (any && none) {
				none.parentNode.removeChild(none);
			} else if (!any && !none) {
				none = document.createElement("div");
				none.classList.add("no-alerts");
				none.style.padding = "0 0 1em 45px";
				none.style.fontStyle = "italic";
				none.appendChild(document.createTextNode("No feed items for this filter. Press the button below to load more items..."));
				container.insertBefore(none, container.firstChild);
			}

			Array.forEach(sidebar.querySelectorAll(".filter-list.small"), function(ul) { ul.style.display = "none"; });
			showParentMenu(a.parentNode);
			var subMenu = a.parentNode.querySelector("ul");
			if (subMenu) { subMenu.style.display = "block"; }

			Array.forEach(sidebar.querySelectorAll(".selected"), function(m) { m.classList.remove("selected"); });
			this.classList.add("selected");
		}, filter.classNames));

		var li = document.createElement("li");
		li.appendChild(a);
		li.filterClassNames = filter.classNames;

		parent.appendChild(li);

		return li;
	}

	function showParentMenu(menuItem) {
		var parentMenuItem = menuItem.parentNode;
		if (parentMenuItem.classList.contains("filter-list")) {
			parentMenuItem.style.display = "block";
			showParentMenu(parentMenuItem.parentNode);
		}
	}

	function pageUpdate(container, sidebar, wrapper) {
		Array.forEach(container.querySelectorAll(".alert"), function(alert) {
			if (alert.getElementsByClassName("octicon-git-branch-create").length > 0) {
				alert.classList.remove("create");
				alert.classList.add("branch_create");
			} else if (alert.getElementsByClassName("octicon-git-branch-delete").length > 0) {
				alert.classList.remove("delete");
				alert.classList.add("branch_delete");
			} else if (alert.getElementsByClassName("octicon-tag-add").length > 0) {
				alert.classList.remove("create");
				alert.classList.add("tag_add");
			} else if (alert.getElementsByClassName("octicon-tag-remove").length > 0) {
				alert.classList.remove("delete");
				alert.classList.add("tag_remove");
			} else if (alert.getElementsByClassName("octicon-git-pull-request").length > 0) {
				alert.classList.remove("issues_opened", "issues_closed");
				if (alert.querySelector(".title span").textContent.toUpperCase() === "OPENED") {  // English localisation;
					alert.classList.add("pull_request_opened");
				} else if (alert.querySelector(".title span").textContent.toUpperCase() === "MERGED") {  // English localisation;
					alert.classList.add("pull_request_merged");
				} else if (alert.querySelector(".title span").textContent.toUpperCase() === "CLOSED") {  // English localisation;
					alert.classList.add("pull_request_closed");
				}
			} else if (alert.classList.contains("issues_comment") && alert.querySelectorAll(".title a")[1].getAttribute("href").split("/")[5] === "pull") {
				alert.classList.remove("issues_comment");
				alert.classList.add("pull_request_comment");
			} else if (alert.classList.contains("gist")) {
				alert.classList.remove("gist");
				alert.classList.add("gist_" + alert.querySelector(".title span").textContent);
			}
		});

		Array.forEach(wrapper.querySelectorAll("li"), function(li) {
			var c = li.querySelector(".count");
			if (li.filterClassNames[0] === "*") {
				c.textContent = container.querySelectorAll(".alert").length;
			} else {
				c.textContent = "0";
				Array.forEach(container.querySelectorAll(".alert"), function(alert) {
					if (li.filterClassNames.some(function(cl) { return alert.classList.contains(cl); })) {
						c.textContent = parseInt(c.textContent, 10) + 1;
					}
				});
			}
		});

		sidebar.querySelector(".selected").dispatchEvent(new Event("click"));
	}

	function addFilters() {
		var container = document.querySelector(".news");
		if (!container) { return; }

		var sidebar = document.querySelector(".dashboard-sidebar") || document.querySelector(".column.one-fourth.vcard");

		var rule = document.createElement("div");
		rule.classList.add("rule");
		sidebar.insertBefore(rule, sidebar.firstChild);

		var wrapper = document.createElement("div");
		sidebar.insertBefore(wrapper, sidebar.firstChild);

		addFilterMenu(FILTERS, wrapper, container, sidebar, true);

		pageUpdate(container, sidebar, wrapper);

		// update on clicking "More"-button;
		new MutationObserver(function() {
			pageUpdate(container, sidebar, wrapper);
		}).observe(container, { childList: true });
	}

	// init;
	addFilters();

})();