Added any URL sharing support using download-proxy

cache.manifest

@@ -1 +1 @@
-CACHE MANIFEST
# v27

CACHE:
index.html
viewer.html
css/main-min.css
js/main-min.js
js/require.js
img/ajax-loader.gif
img/glyphicons-halflings.png
img/glyphicons-halflings-white.png
img/icons.png
img/stackedit-32.ico
img/stackedit-promo.png

NETWORK:
*
+CACHE MANIFEST
# v28

CACHE:
index.html
viewer.html
css/main-min.css
js/main-min.js
js/require.js
img/ajax-loader.gif
img/glyphicons-halflings.png
img/glyphicons-halflings-white.png
img/icons.png
img/stackedit-32.ico
img/stackedit-promo.png

NETWORK:
*

css/main-min.css

@@ -5556,6 +5556,9 @@ div.dropdown-menu blockquote {
 div.dropdown-menu i {
     margin-right: 0;
 }
+#link-container {
+	min-width: 210px;
+}
 #link-container .link-list {
 	margin-top: 10px;
 }

css/main.css

@@ -264,6 +264,10 @@ div.dropdown-menu i {
     margin-right: 0;
 }
 
+#link-container {
+	min-width: 210px;
+}
+
 #link-container .link-list {
 	margin-top: 10px;
 }

index.html

@@ -44,10 +44,15 @@
 					</button>
 					<div id="link-container" class="dropdown-menu">
 						<div class="link-list"></div>
-						<p class="no-link">To share this document you need first to <a href="#"
-							class="action-publish-gist">publish it as a
-								Gist</a> in Markdown format.
+						<p class="no-link">To share this document you need first to <a
+							href="#" class="action-publish-gist">publish it as a Gist</a> in
+							Markdown format.
 						</p>
+						<blockquote class="muted">
+							<b>NOTE:</b> You can open any URL within StackEdit using <a
+								href="viewer.html?url=https://raw.github.com/benweet/stackedit/master/README.md"
+								title="Sharing example">viewer.html?url=...</a>
+						</blockquote>
 					</div>
 				</li>
 				<li class="btn-group"><button class="btn action-create-file"
@@ -65,11 +70,12 @@
 					<ul id="file-selector" class="dropdown-menu">
 					</ul></li>
 				<li class="btn-group"><button class="btn dropdown-toggle"
-					data-toggle="dropdown" title="Menu"><i
-						class="icon-stackedit"></i>&nbsp;&nbsp;<b class="caret"></b></button>
+						data-toggle="dropdown" title="Menu">
+						<i class="icon-stackedit"></i>&nbsp;&nbsp;<b class="caret"></b>
+					</button>
 					<ul class="dropdown-menu">
-						<li><a href="viewer.html" title="Viewer"><i class="icon-fullscreen"></i>
-								Open in viewer</a></li>
+						<li><a href="viewer.html" title="Viewer"><i
+								class="icon-fullscreen"></i> Open in viewer</a></li>
 						<li><a class="action-download-md" href="#"><i
 								class="icon-download-alt"></i> Save as Markdown</a></li>
 						<li><a class="action-download-html" href="#"><i
@@ -596,8 +602,8 @@
 				</dd>
 				<dd>
 					<a target="_blank"
-						href="https://plus.google.com/110816046787593496375" rel="publisher">Follow
-						on Google+</a>
+						href="https://plus.google.com/110816046787593496375"
+						rel="publisher">Follow on Google+</a>
 				</dd>
 			</dl>
 			<dl>

js/config.js

@@ -10,12 +10,13 @@ var BITLY_ACCESS_TOKEN = "317e033bfd48cf31155a68a536b1860013b09c4c";
 var DEFAULT_FILE_TITLE = "Title";
 var GDRIVE_DEFAULT_FILE_TITLE = "New Markdown document";
 var CHECK_ONLINE_PERIOD = 60000;
-var AJAX_TIMEOUT = 10000;
+var AJAX_TIMEOUT = 15000;
 var ASYNC_TASK_DEFAULT_TIMEOUT = 30000;
 var ASYNC_TASK_LONG_TIMEOUT = 90000;
 var SYNC_PERIOD = 180000;
 var USER_IDLE_THRESHOLD = 300000;
 var WELCOME_DOCUMENT_TITLE = "Welcome document";
+var DOWNLOAD_PROXY_URL = "http://stackedit-download-proxy.herokuapp.com/";
 
 // Use by Google's client.js
 var delayedFunction = undefined;

js/download-provider.js

@@ -0,0 +1,44 @@
+define(["jquery", "core", "async-runner"], function($, core, asyncRunner) {
+	
+	var PROVIDER_DOWNLOAD = "download";
+	
+	var downloadProvider = {
+		providerId: PROVIDER_DOWNLOAD,
+		sharingAttributes: ["url"]
+	};
+	
+	downloadProvider.importPublic = function(importParameters, callback) {
+		var task = asyncRunner.createTask();
+		var title = undefined; 
+		var content = undefined;
+		task.onRun(function() {
+			var url = importParameters.url;
+			var slashUrl = url.lastIndexOf("/");
+			if(slashUrl === -1) {
+				task.error(new Error("Invalid URL parameter."));
+				return;
+			}
+			title = url.substring(slashUrl + 1);
+			$.ajax({
+				url : DOWNLOAD_PROXY_URL + "download?url=" + url,
+				type: "GET",
+				dataType : "text",
+				timeout : AJAX_TIMEOUT
+			}).done(function(result, textStatus, jqXHR) {
+				content = result;
+				task.chain();
+			}).fail(function(jqXHR) {
+				task.error(new Error("Unable to access URL " + url));
+			});
+		});
+		task.onSuccess(function() {
+			callback(undefined, title, content);
+		});
+		task.onError(function(error) {
+			callback(error);
+		});
+		asyncRunner.addTask(task);
+	};
+
+	return downloadProvider;
+});

js/sharing.js

@@ -1,4 +1,4 @@
-define(["jquery", "core", "async-runner", "gist-provider", "underscore"], function($, core, asyncRunner) {
+define(["jquery", "core", "async-runner", "download-provider", "gist-provider", "underscore"], function($, core, asyncRunner) {
 	var sharing = {};
 	
 	// Create a map with providerId: providerObject
@@ -115,7 +115,7 @@ define(["jquery", "core", "async-runner", "gist-provider", "underscore"], functi
 		// Check parameters to see if we have to download a shared document
 		var providerId = core.getURLParameter("provider");
 		if(providerId === undefined) {
-			return;
+			providerId = "download";
 		}
 		var provider = providerMap[providerId];
 		if(provider === undefined) {
@@ -123,7 +123,11 @@ define(["jquery", "core", "async-runner", "gist-provider", "underscore"], functi
 		}
 		var importParameters = {};
 		_.each(provider.sharingAttributes, function(attributeName) {
-			importParameters[attributeName] = core.getURLParameter(attributeName);
+			var parameter = core.getURLParameter(attributeName);
+			if(!parameter) {
+				return;
+			}
+			importParameters[attributeName] = parameter;
 		});
 		$("#wmd-preview, #file-title").hide();
 		provider.importPublic(importParameters, function(error, title, content) {