Github Comment Enhancer

Enhances Github comments

La data de 14-05-2014. Vezi ultima versiune.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @id          Github_Comment_Enhancer@https://github.com/jerone/UserScripts
// @name        Github Comment Enhancer
// @namespace   https://github.com/jerone/UserScripts
// @description Enhances Github comments
// @author      jerone
// @homepage    https://github.com/jerone/UserScripts/tree/master/Github_Comment_Enhancer
// @homepageURL https://github.com/jerone/UserScripts/tree/master/Github_Comment_Enhancer
// @version     1.3
// @grant       none
// @run-at      document-end
// @include     https://github.com/*/*/issues/*
// @include     https://github.com/*/*/pull/*
// @include     https://github.com/*/*/commit/*
// @include     https://github.com/*/*/wiki/*
// ==/UserScript==
/* global unsafeWindow */

(function() {

	// Source: https://github.com/gollum/gollum/blob/9c714e768748db4560bc017cacef4afa0c751a63/lib/gollum/public/gollum/javascript/editor/langs/markdown.js
	var MarkDown = {
		"function-bold": {
			search: /^(\s*)([\s\S]*?)(\s*)$/g,
			replace: "$1**$2**$3"
		},
		"function-italic": {
			search: /^(\s*)([\s\S]*?)(\s*)$/g,
			replace: "$1_$2_$3"
		},
		"function-strikethrough": {
			search: /^(\s*)([\s\S]*?)(\s*)$/g,
			replace: "$1~~$2~~$3"
		},

		"function-h1": {
			search: /(.+)([\n]?)/g,
			replace: "# $1$2",
			forceNewline: true
		},
		"function-h2": {
			search: /(.+)([\n]?)/g,
			replace: "## $1$2",
			forceNewline: true
		},
		"function-h3": {
			search: /(.+)([\n]?)/g,
			replace: "### $1$2",
			forceNewline: true
		},
		"function-h4": {
			search: /(.+)([\n]?)/g,
			replace: "#### $1$2",
			forceNewline: true
		},
		"function-h5": {
			search: /(.+)([\n]?)/g,
			replace: "##### $1$2",
			forceNewline: true
		},
		"function-h6": {
			search: /(.+)([\n]?)/g,
			replace: "###### $1$2",
			forceNewline: true
		},

		"function-link": {
			exec: function(txt, selText, next) {
				var isUrl = selText && /(?:https?:\/\/)|(?:www\.)/.test(selText.trim()),
					href = window.prompt("Link href:", isUrl ? selText.trim() : ""),
					text = window.prompt("Link text:", isUrl ? "" : selText.trim());
				if (href) {
					next("[" + (text || href) + "](" + href + ")");
				}
			}
		},
		"function-image": {
			exec: function(txt, selText, next) {
				var isUrl = selText && /(?:https?:\/\/)|(?:www\.)/.test(selText.trim()),
					href = window.prompt("Image href:", isUrl ? selText.trim() : ""),
					text = window.prompt("Image text:", isUrl ? "" : selText.trim());
				if (href) {
					next("![" + (text || href) + "](" + href + ")");
				}
			}
		},

		"function-ul": {
			search: /(.+)([\n]?)/g,
			replace: "* $1$2",
			forceNewline: true
		},
		"function-ol": {
			exec: function(txt, selText, next) {
				var repText = "";
				if (!selText) {
					repText = "1. ";
				} else {
					var lines = selText.split("\n"),
						hasContent = /[\w]+/;
					for (var i = 0; i < lines.length; i++) {
						if (hasContent.test(lines[i])) {
							repText += (i + 1).toString() + ". " + lines[i] + "\n";
						}
					}
				}
				next(repText);
			}
		},
		"function-checklist": {
			search: /(.+)([\n]?)/g,
			replace: "* [ ] $1$2",
			forceNewline: true
		},

		"function-code": {
			exec: function(txt, selText, next) {
				var rt = selText.indexOf("\n") > -1 ? "$1\n```\n$2\n```$3" : "$1`$2`$3";
				next(selText.replace(/^(\s*)([\s\S]*?)(\s*)$/g, rt));
			}
		},
		"function-blockquote": {
			search: /(.+)([\n]?)/g,
			replace: "> $1$2",
			forceNewline: true
		},
		"function-hr": {
			append: "\n***\n",
			forceNewline: true
		},
		"function-table": {
			append: "\n" +
					"| Header | Header | Header |\n" +
					"| :--- | :---: | ---: |\n" +
					"| Cell | Cell  | Cell |\n" +
					"| Cell | Cell  | Cell |\n",
			forceNewline: true
		}
	};

	var editorHTML = (function() {
		return '<div id="gollum-editor-function-buttons">' +
				'	<div class="button-group">' +
				'		<a href="#" id="function-bold" class="minibutton function-button" title="Bold" tabindex="-1">' +
				'			<b>B</b>' +
				'		</a>' +
				'		<a href="#" id="function-italic" class="minibutton function-button" title="Italic" tabindex="-1">' +
				'			<em>i</em>' +
				'		</a>' +
				'		<a href="#" id="function-strikethrough" class="minibutton function-button" title="Strikethrough" tabindex="-1">' +
				'			<s>S</s>' +
				'		</a>' +
				'	</div>' +

				'	<div class="button-group">' +
				'		<div class="select-menu js-menu-container js-select-menu js-composer-assignee-picker">' +
				'			<span aria-haspopup="true" title="Headers" role="button" class="minibutton select-menu-button icon-only js-menu-target" style="padding:0 18px 0 7px; width:auto; border-bottom-right-radius:3px; border-top-right-radius:3px;">' +
				'				<b>h#</b>' +
				'			</span>' +
				'			<div aria-hidden="false" class="select-menu-modal-holder js-menu-content js-navigation-container js-active-navigation-container" style="top: 26px;">' +
				'				<div class="select-menu-modal" style="width:auto;">' +
				'					<div class="select-menu-header">' +
				'						<span class="select-menu-title">Choose header</span>' +
				'						<span class="octicon octicon-remove-close js-menu-close"></span>' +
				'					</div>' +
				'					<div class="button-group">' +
				'						<a href="#" id="function-h1" class="minibutton function-button js-menu-close" title="Header 1" tabindex="-1">' +
				'							<b>h1</b>' +
				'						</a>' +
				'						<a href="#" id="function-h2" class="minibutton function-button js-menu-close" title="Header 2" tabindex="-1">' +
				'							<b>h2</b>' +
				'						</a>' +
				'						<a href="#" id="function-h3" class="minibutton function-button js-menu-close" title="Header 3" tabindex="-1">' +
				'							<b>h3</b>' +
				'						</a>' +
				'						<a href="#" id="function-h4" class="minibutton function-button js-menu-close" title="Header 4" tabindex="-1">' +
				'							<b>h4</b>' +
				'						</a>' +
				'						<a href="#" id="function-h5" class="minibutton function-button js-menu-close" title="Header 5" tabindex="-1">' +
				'							<b>h5</b>' +
				'						</a>' +
				'						<a href="#" id="function-h6" class="minibutton function-button js-menu-close" title="Header 6" tabindex="-1">' +
				'							<b>h6</b>' +
				'						</a>' +
				'					</div>' +
				'				</div>' +
				'			</div>' +
				'		</div>' +
				'	</div>' +

				'	<div class="button-group">' +
				'		<a href="#" id="function-link" class="minibutton function-button" title="Link" tabindex="-1">' +
				'			<span class="octicon octicon-link"></span>' +
				'		</a>' +
				'		<a href="#" id="function-image" class="minibutton function-button" title="Image" tabindex="-1">' +
				'			<span class="octicon octicon-file-media"></span>' +
				'		</a>' +
				'	</div>' +
				'	<div class="button-group">' +
				'		<a href="#" id="function-ul" class="minibutton function-button" title="Unordered List" tabindex="-1">' +
				'			<span class="octicon octicon-list-unordered"></span>' +
				'		</a>' +
				'		<a href="#" id="function-ol" class="minibutton function-button" title="Ordered List" tabindex="-1">' +
				'			<span class="octicon octicon-list-ordered"></span>' +
				'		</a>' +
				'		<a href="#" id="function-checklist" class="minibutton function-button" title="Task List" tabindex="-1">' +
				'			<span class="octicon octicon-checklist"></span>' +
				'		</a>' +
				'	</div>' +

				'	<div class="button-group">' +
				'		<a href="#" id="function-code" class="minibutton function-button" title="Code" tabindex="-1">' +
				'			<span class="octicon octicon-code"></span>' +
				'		</a>' +
				'		<a href="#" id="function-blockquote" class="minibutton function-button" title="Blockquote" tabindex="-1">' +
				'			<span class="octicon octicon-quote"></span>' +
				'		</a>' +
				'		<a href="#" id="function-hr" class="minibutton function-button" title="Horizontal Rule" tabindex="-1">' +
				'			<span class="octicon octicon-horizontal-rule"></span>' +
				'		</a>' +
				'		<a href="#" id="function-table" class="minibutton function-button" title="Table" tabindex="-1">' +
				'			<span class="octicon octicon-three-bars"></span>' +
				'		</a>' +
				'	</div>' +
				'</div>';
	})();

	// Source: https://github.com/gollum/gollum/blob/9c714e768748db4560bc017cacef4afa0c751a63/lib/gollum/public/gollum/javascript/editor/gollum.editor.js#L516
	function executeAction(definitionObject, commentForm) {
		var txt = commentForm.value,
			selPos = {
				start: commentForm.selectionStart,
				end: commentForm.selectionEnd
			},
			selText = txt.substring(selPos.start, selPos.end),
			repText = selText,
			reselect = true,
			cursor = null;

		// execute replacement function;
		if (definitionObject.exec) {
			definitionObject.exec(txt, selText, function(repText) {
				replaceFieldSelection(commentForm, repText);
			});
			return;
		}

		// execute a search;
		var searchExp = new RegExp(definitionObject.search || /([^\n]+)/gi);

		// replace text;
		if (definitionObject.replace) {
			var rt = definitionObject.replace;
			repText = repText.replace(searchExp, rt);
			repText = repText.replace(/\$[\d]/g, "");
			if (repText === "") {
				cursor = rt.indexOf("$1");
				repText = rt.replace(/\$[\d]/g, "");
				if (cursor === -1) {
					cursor = Math.floor(rt.length / 2);
				}
			}
		}

		// append if necessary;
		if (definitionObject.append) {
			if (repText === selText) {
				reselect = false;
			}
			repText += definitionObject.append;
		}

		if (repText) {
			if (definitionObject.forceNewline === true && (selPos.start > 0 && txt.substr(Math.max(0, selPos.start - 1), 1) !== "\n")) {
				repText = "\n" + repText;
			}
			replaceFieldSelection(commentForm, repText, reselect, cursor);
		}
	}

	// Source: https://github.com/gollum/gollum/blob/9c714e768748db4560bc017cacef4afa0c751a63/lib/gollum/public/gollum/javascript/editor/gollum.editor.js#L708
	function replaceFieldSelection(commentForm, replaceText, reselect, cursorOffset) {
		var txt = commentForm.value,
			selPos = {
				start: commentForm.selectionStart,
				end: commentForm.selectionEnd
			};

		var selectNew = true;
		if (reselect === false) {
			selectNew = false;
		}

		var scrollTop = null;
		if (commentForm.scrollTop) {
			scrollTop = commentForm.scrollTop;
		}

		commentForm.value = txt.substring(0, selPos.start) + replaceText + txt.substring(selPos.end);
		commentForm.focus();

		if (selectNew) {
			if (cursorOffset) {
				commentForm.setSelectionRange(selPos.start + cursorOffset, selPos.start + cursorOffset);
			} else {
				commentForm.setSelectionRange(selPos.start, selPos.start + replaceText.length);
			}
		}

		if (scrollTop) {
			commentForm.scrollTop = scrollTop;
		}
	}

	function isWiki() {
		return /\/wiki\//.test(location.href);
	}

	var functionButtonClick = function(e) {
		e.preventDefault();
		executeAction(MarkDown[this.id], this.commentForm);
		return false;
	};

	function addToolbar() {
		if (isWiki()) {
			// Override existing language with improved & missing functions and remove existing click events;
			unsafeWindow.$.GollumEditor.defineLanguage("markdown", MarkDown);
			unsafeWindow.$(".function-button:not(#function-help)").unbind("click");

			// Remove existing click events when changing languages;
			document.getElementById("wiki_format").addEventListener("change", function() {
				unsafeWindow.$(".function-button:not(#function-help)").unbind("click");

				Array.forEach(document.querySelectorAll(".comment-form-textarea .function-button"), function(button) {
					button.removeEventListener("click", functionButtonClick);
				});
			});
		}

		Array.forEach(document.querySelectorAll(".comment-form-textarea"), function(commentForm) {
			if (commentForm.classList.contains("GithubCommentEnhancer")) { return; }
			commentForm.classList.add("GithubCommentEnhancer");

			var gollumEditor;
			if (isWiki()) {
				gollumEditor = document.getElementById("gollum-editor-function-bar");
				var temp = document.createElement("div");
				temp.innerHTML = editorHTML;
				temp.firstChild.appendChild(document.getElementById("function-help"));  // restore the help button;
				gollumEditor.replaceChild(temp.firstChild, document.getElementById("gollum-editor-function-buttons"));
			} else {
				gollumEditor = document.createElement("div");
				gollumEditor.innerHTML = editorHTML;
				gollumEditor.id = "gollum-editor-function-bar";
				gollumEditor.style.border = "0 none";
				gollumEditor.classList.add("active");
				commentForm.parentNode.insertBefore(gollumEditor, commentForm.parentNode.firstChild);
			}

			Array.forEach(gollumEditor.querySelectorAll(".function-button"), function(button) {
				button.commentForm = commentForm;  // remove event listener doesn't accept `bind`;
				button.addEventListener("click", functionButtonClick);
			});
		});
	}

	// init;
	addToolbar();

	// on pjax;
	unsafeWindow.$(document).on("pjax:success", addToolbar);

	// on page update;
	unsafeWindow.$.pageUpdate(function() {
		window.setTimeout(function() {
			addToolbar();
		}, 1);
	});

})();