Github News Feed Filter

Add filters for Github homepage news feed items

Versão de: 02/07/2014. Veja: a última versão.

Você precisará instalar uma extensão como Tampermonkey, Greasemonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Userscripts para instalar este script.

Você precisará instalar uma extensão como o Tampermonkey para instalar este script.

Você precisará instalar um gerenciador de scripts de usuário para instalar este script.

(Eu já tenho um gerenciador de scripts de usuário, me deixe instalá-lo!)

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

(Eu já possuo um gerenciador de estilos de usuário, me deixar fazer a instalação!)

// ==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();

})();