From bfda8350aeab1497190dab436c43642835fa3867 Mon Sep 17 00:00:00 2001
From: Wes Cossick <wes@nextstepwebs.com>
Date: Sat, 19 Sep 2015 20:42:20 -0500
Subject: [PATCH] Auto download Font Awesome

---
 README.md           |  7 +------
 src/js/simplemde.js | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 986e18b..cd9d103 100644
--- a/README.md
+++ b/README.md
@@ -21,12 +21,6 @@ SimpleMDE is also available on [jsDelivr](http://www.jsdelivr.com/#!simplemde).
 <script src="//cdn.jsdelivr.net/simplemde/latest/simplemde.min.js"></script>
 ```
 
-SimpleMDE depends on Font Awesome (load via MaxCDN for best performance).
-
-```HTML
-<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css">
-```
-
 And then load SimpleMDE on the first textarea on a page
 
 ```HTML
@@ -65,6 +59,7 @@ simplemde.value("This text will appear in the editor");
 
 ## Configuration
 
+- **autoDownloadFontAwesome**: If set to `true`, force downloads Font Awesome (used for icons). If set to false, prevents downloading. Defaults to `undefined`, which will intelligently check whether Font Awesome has already been included, then download accordingly.
 - **autofocus**: If set to `true`, autofocuses the editor. Defaults to `false`.
 - **autosave**: *Saves the text that's being written. It will forget the text when the form is submitted.*
   - **enabled**: If set to `true`, autosave the text. Defaults to `false`.
diff --git a/src/js/simplemde.js b/src/js/simplemde.js
index d9e1597..11a7f70 100644
--- a/src/js/simplemde.js
+++ b/src/js/simplemde.js
@@ -733,10 +733,44 @@ var toolbar = ["bold", "italic", "heading", "|", "quote", "unordered-list", "ord
  * Interface of SimpleMDE.
  */
 function SimpleMDE(options) {
+	// Handle options parameter
 	options = options || {};
 
+
 	// Used later to refer to it's parent
 	options.parent = this;
+	
+	
+	// Check if Font Awesome needs to be auto downloaded
+	var autoDownloadFA = true;
+
+	if(options.autoDownloadFontAwesome === false){
+		autoDownloadFA = false;
+	}
+	
+	if(options.autoDownloadFontAwesome !== true){
+		var styleSheets = document.styleSheets;
+		for(var i = 0; i < styleSheets.length; i++) {
+			if(!styleSheets[i].href)
+				continue;
+			
+			if(styleSheets[i].href.indexOf("//maxcdn.bootstrapcdn.com/font-awesome/") > -1){
+				autoDownloadFA = false;
+			}
+		}
+	}
+	
+	if(autoDownloadFA){
+		console.log("autodownloading");
+		
+		var link = document.createElement("link");
+		link.rel = "stylesheet";
+		link.href = "https://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css";
+		document.getElementsByTagName("head")[0].appendChild(link);
+	}else{
+		console.log("not autodownloading");
+	}
+
 
 	// Find the textarea to use
 	if(options.element) {
@@ -747,6 +781,7 @@ function SimpleMDE(options) {
 		return;
 	}
 
+
 	// Handle toolbar and status bar
 	if(options.toolbar !== false)
 		options.toolbar = options.toolbar || SimpleMDE.toolbar;
@@ -755,6 +790,7 @@ function SimpleMDE(options) {
 		options.status = ['autosave', 'lines', 'words', 'cursor'];
 	}
 
+
 	// Add default preview rendering function
 	if(!options.previewRender) {
 		options.previewRender = function(plainText) {
@@ -763,15 +799,19 @@ function SimpleMDE(options) {
 		}
 	}
 
+
 	// Set default options for parsing config
 	options.parsingConfig = options.parsingConfig || {};
 
+
 	// Update this options
 	this.options = options;
 
+
 	// Auto render
 	this.render();
 
+
 	// The codemirror component is only available after rendering
 	// so, the setter for the initialValue can only run after
 	// the element has been rendered