From 6f88ece1ece147fc6341849dbcb9119c8f47bb20 Mon Sep 17 00:00:00 2001
From: Yauheni Pakala <evgeniy.pakalo@gmail.com>
Date: Wed, 10 Feb 2016 23:35:52 +0300
Subject: [PATCH] Added implementation of relative links #7

---
 README.md                            | 21 ++++++++++++++
 dist/highlightjs-line-numbers.min.js |  2 +-
 src/highlightjs-line-numbers.js      | 42 +++++++++++++++++++++-------
 3 files changed, 54 insertions(+), 11 deletions(-)

diff --git a/README.md b/README.md
index c9406af..a6e875c 100644
--- a/README.md
+++ b/README.md
@@ -56,5 +56,26 @@ $(document).ready(function() {
 });
 ```
 
+## Additional features
+
+#### Links
+```js
+hljs.initLineNumbersOnLoad({
+	withLinks: true
+});
+```
+
+```css
+.hljs-line-numbers a {
+	text-decoration: none;
+	color: #999;
+}
+.hljs-line-numbers a:target {
+	color: #ff0000;
+	text-decoration: underline;
+	outline: none;
+}
+```
+
 ---
 &copy; 2015 Yauheni Pakala | MIT License
diff --git a/dist/highlightjs-line-numbers.min.js b/dist/highlightjs-line-numbers.min.js
index 6d0a3cb..e438d41 100644
--- a/dist/highlightjs-line-numbers.min.js
+++ b/dist/highlightjs-line-numbers.min.js
@@ -1 +1 @@
-!function(e){"use strict";function t(){"complete"===document.readyState?n():e.addEventListener("DOMContentLoaded",n)}function n(){try{var e=document.querySelectorAll("code.hljs");for(var t in e)e.hasOwnProperty(t)&&r(e[t])}catch(n){console.error("LineNumbers error: ",n)}}function r(e){if("object"==typeof e){var t=e.parentNode,n=o(t.textContent);if(n>1){for(var r="",c=0;n>c;c++)r+=c+1+"\n";var l=document.createElement("code");l.className="hljs hljs-line-numbers",l.style["float"]="left",l.textContent=r,t.insertBefore(l,e)}}}function o(e){if(0===e.length)return 0;var t=/\r\n|\r|\n/g,n=e.match(t);return n=n?n.length:0,e[e.length-1].match(t)||(n+=1),n}"undefined"==typeof e.hljs?console.error("highlight.js not detected!"):(e.hljs.initLineNumbersOnLoad=t,e.hljs.lineNumbersBlock=r)}(window);
\ No newline at end of file
+!function(e){"use strict";function n(n){n=n||c,"complete"===document.readyState?t(n):e.addEventListener("DOMContentLoaded",function(){t(n)})}function t(e){try{var n=document.querySelectorAll("code.hljs");for(var t in n)n.hasOwnProperty(t)&&r(n[t],{blockName:"c"+t,withLinks:e.withLinks})}catch(o){console.error("LineNumbers error: ",o)}}function r(e,n){if("object"==typeof e){n?(n.withLinks=n.withLinks||!1,n.blockName=n.blockName||!1):(n=c,n.blockName="");var t=e.parentNode,r=o(t.textContent);if(r>1){for(var a="",l=0;l<r;l++)a+=n.withLinks?i(l+1,n.blockName):l+1+"\n";var s=document.createElement("code");s.className="hljs hljs-line-numbers",s.style["float"]="left",s.innerHTML=a,t.insertBefore(s,e)}}}function o(e){if(0===e.length)return 0;var n=/\r\n|\r|\n/g,t=e.match(n);return t=t?t.length:0,e[e.length-1].match(n)||(t+=1),t}function i(e,n){var t=n+"_l"+e;return'<a href="#'+t+'" name="'+t+'">'+e+"</a>\n"}"undefined"==typeof e.hljs?console.error("highlight.js not detected!"):(e.hljs.initLineNumbersOnLoad=n,e.hljs.lineNumbersBlock=r);var c={withLinks:!1}}(window);
\ No newline at end of file
diff --git a/src/highlightjs-line-numbers.js b/src/highlightjs-line-numbers.js
index f68f8f2..63131d2 100644
--- a/src/highlightjs-line-numbers.js
+++ b/src/highlightjs-line-numbers.js
@@ -8,21 +8,29 @@
 		w.hljs.lineNumbersBlock = lineNumbersBlock;
 	}
 
-	function initLineNumbersOnLoad () {
+	var defaultOptions = {
+		withLinks: false
+	};
+
+	function initLineNumbersOnLoad (options) {
+		options = options || defaultOptions;
 		if (document.readyState === 'complete') {
-			documentReady();
+			documentReady(options);
 		} else {
-			w.addEventListener('DOMContentLoaded', documentReady);
+			w.addEventListener('DOMContentLoaded', function() { documentReady(options); });
 		}
 	}
 
-	function documentReady () {
+	function documentReady (options) {
 		try {
 			var blocks = document.querySelectorAll('code.hljs');
 
 			for (var i in blocks) {
 				if (blocks.hasOwnProperty(i)) {
-					lineNumbersBlock(blocks[i]);
+						lineNumbersBlock(blocks[i], {
+							blockName: 'c' + i,
+							withLinks: options.withLinks
+						});
 				}
 			}
 		} catch (e) {
@@ -30,8 +38,15 @@
 		}
 	}
 
-	function lineNumbersBlock (element) {
+	function lineNumbersBlock (element, options) {
 		if (typeof element !== 'object') return;
+		if (!!options) {
+			options.withLinks = options.withLinks || false;
+			options.blockName = options.blockName || false;
+		} else {
+			options = defaultOptions;
+			options.blockName = '';
+		}
 
 		var parent = element.parentNode;
 		var lines = getCountLines(parent.textContent);
@@ -39,19 +54,21 @@
 		if (lines > 1) {
 			var l = '';
 			for (var i = 0; i < lines; i++) {
-				l += (i + 1) + '\n';
+				l +=  options.withLinks
+					? getLineWithLink(i + 1, options.blockName)
+					: (i + 1) + '\n';
 			}
 
 			var linesPanel = document.createElement('code');
 			linesPanel.className = 'hljs hljs-line-numbers';
 			linesPanel.style.float = 'left';
-			linesPanel.textContent = l;
+			linesPanel.innerHTML = l;
 
 			parent.insertBefore(linesPanel, element);
 		}
 	}
 
-	function getCountLines(text) {
+	function getCountLines (text) {
 		if (text.length === 0) return 0;
 
 		var regExp = /\r\n|\r|\n/g;
@@ -64,4 +81,9 @@
 
 		return lines;
 	}
-}(window));
\ No newline at end of file
+
+	function getLineWithLink (i, blockName) {
+		var id = blockName + '_l' + i;
+		return '<a href="#' + id + '" name="' + id + '">' + i + '</a>\n'
+	}
+}(window));