Github Comment Enhancer

Enhances Github comments

Versione datata 23/04/2014. Vedi la nuova versione l'ultima versione.

Dovrai installare un'estensione come Tampermonkey, Greasemonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Userscripts per installare questo script.

Dovrai installare un'estensione come ad esempio Tampermonkey per installare questo script.

Dovrai installare un gestore di script utente per installare questo script.

(Ho già un gestore di script utente, lasciamelo installare!)

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

(Ho già un gestore di stile utente, lasciamelo installare!)

// ==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     1.0
// @grant       none
// @run-at      document-end
// @include     https://github.com/*/*/issues/*
// @include     https://github.com/*/*/pull/*
// @include     https://github.com/*/*/commit/*
// ==/UserScript==

(function() {

	// Source: https://github.com/gollum/gollum/blob/9c714e768748db4560bc017cacef4afa0c751a63/lib/gollum/public/gollum/javascript/editor/langs/markdown.js
	var MarkDown = {
		"function-bold": {
			search: /([^\n]+)([\n\s]*)/g,
			replace: "**$1**$2"
		},
		"function-italic": {
			search: /([^\n]+)([\n\s]*)/g,
			replace: "_$1_$2"
		},
		"function-strikethrough": {
			search: /([^\n]+)([\n\s]*)/g,
			replace: "~~$1~~$2"
		},
		"function-code": {
			search: /([^\n]+)([\n\s]*)/g,
			replace: "`$1`$2"
		},
		"function-hr": {
			append: "\n***\n"
		},
		"function-ul": {
			search: /(.+)([\n]?)/g,
			replace: "* $1$2"
		},
		"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-blockquote": {
			search: /(.+)([\n]?)/g,
			replace: "> $1$2"
		},
		"function-h1": {
			search: /(.+)([\n]?)/g,
			replace: "# $1$2"
		},
		"function-h2": {
			search: /(.+)([\n]?)/g,
			replace: "## $1$2"
		},
		"function-h3": {
			search: /(.+)([\n]?)/g,
			replace: "### $1$2"
		},
		"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 + ")");
				}
			}
		}
	};

	Array.forEach(document.querySelectorAll(".comment-form-textarea"), function(commentForm) {
		var gollumEditor = document.createElement("div");
		gollumEditor.innerHTML =
			'<div class="active" id="gollum-editor-function-bar">' +
			'  <div id="gollum-editor-function-buttons">' +
			'    <div class="button-group">' +
			'      <a href="#" id="function-h1" class="minibutton function-button" title="Header 1" tabindex="-1">' +
			'        <b>h1</b>' +
			'      </a>' +
			'      <a href="#" id="function-h2" class="minibutton function-button" title="Header 2" tabindex="-1">' +
			'        <b>h2</b>' +
			'      </a>' +
			'      <a href="#" id="function-h3" class="minibutton function-button" title="Header 3" tabindex="-1">' +
			'        <b>h3</b>' +
			'      </a>' +
			'    </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-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>' +
			'      <a href="#" id="function-code" class="minibutton function-button" title="Code" tabindex="-1">' +
			'        <span class="octicon octicon-code"></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-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>' +
			'    </div>' +
			//'    <a href="#" id="function-help" class="minibutton function-button" title="Help" tabindex="-1">' +
			//'	   <span class="octicon octicon-question"></span>' +
			//'    </a>' +
			'  </div>' +
			'</div>';
		commentForm.parentNode.insertBefore(gollumEditor, commentForm.parentNode.firstChild);

		Array.forEach(gollumEditor.querySelectorAll(".function-button"), function(button) {
			button.addEventListener("click", function(e) {
				e.preventDefault();

				executeAction(MarkDown[this.id], commentForm);

				return false;
			});
		});

	});

	// 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 a replacement function if one exists
		if (definitionObject.exec && typeof definitionObject.exec === "function") {
			definitionObject.exec(txt, selText, function(repText) {
				replaceFieldSelection(commentForm, repText);
			});
			return;
		}

		// execute a search/replace if they exist
		var searchExp = /([^\n]+)/gi;
		if (definitionObject.search && typeof definitionObject.search === "object") {
			searchExp = null;
			searchExp = new RegExp(definitionObject.search);
		}

		// replace text
		if (definitionObject.replace && typeof definitionObject.replace === "string") {
			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 && typeof definitionObject.append === "string") {
			if (repText === selText) {
				reselect = false;
			}
			repText += definitionObject.append;
		}

		if (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;
		}
	}

})();