periodic down synchronization

cache.manifest

@@ -1 +1 @@
-CACHE MANIFEST
# v4

CACHE:
index.html
css/bootstrap.css
css/jgrowl.css
css/main.css
js/async-runner.js
js/base64.js
js/bootstrap.js
js/gdrive.js
js/jquery.jgrowl.js
js/jquery.js
js/jquery.layout.js
js/jquery-ui.custom.js
js/main.js
js/Markdown.Converter.js
js/Markdown.Editor.js
js/Markdown.Sanitizer.js
img/ajax-loader.gif
img/gdrive.png
img/glyphicons-halflings.png
img/glyphicons-halflings-white.png
img/stackedit-16.png
img/stackedit-32.ico

NETWORK:
*
+CACHE MANIFEST
# v5

CACHE:
index.html
css/bootstrap.css
css/jgrowl.css
css/main.css
js/async-runner.js
js/base64.js
js/bootstrap.js
js/gdrive.js
js/jquery.jgrowl.js
js/jquery.js
js/jquery.layout.js
js/jquery-ui.custom.js
js/main.js
js/Markdown.Converter.js
js/Markdown.Editor.js
js/Markdown.Sanitizer.js
img/ajax-loader.gif
img/gdrive.png
img/glyphicons-halflings.png
img/glyphicons-halflings-white.png
img/stackedit-16.png
img/stackedit-32.ico

NETWORK:
*

index.html

@@ -100,7 +100,7 @@
 		<div class="modal-header">
 			<button type="button" class="close" data-dismiss="modal"
 				aria-hidden="true">&times;</button>
-			<h3>Remove file</h3>
+			<h3>Remove</h3>
 		</div>
 		<div class="modal-body">
 			<p>Are you sure you want to remove "<span class="file-title"></span>"?

js/async-runner.js

@@ -1,66 +1,101 @@
+var ASYNC_TASK_DEFAULT_TIMEOUT = 30000;
+
 /**
  *  Used to run any asynchronous tasks sequentially (ajax mainly)
  *  An asynchronous task must be created with:
- *  - a required run() function that may call success() or error()
+ *  - a required run() function that may call success(), error() or retry()
  *  - an optional onSuccess() function
  *  - an optional onError() function
- *  - an optional timeout property
+ *  - an optional timeout field (default is 30000)
  */
 var asyncTaskRunner = (function() {
 	var asyncTaskRunner = {};
 	
 	var asyncTaskQueue = [];
 	var currentTask = undefined;
-	var currentTaskStartTime = new Date().getTime();
+	var currentTaskRunning = false;
+	var currentTaskStartTime = currentTime;
 	
 	// Run the next task in the queue if any and no other is running
 	asyncTaskRunner.runTask = function() {
 		
 		// If there is a task currently running
-		if(currentTask !== undefined) {
+		if(currentTaskRunning !== false) {
 			// If the current task takes too long
-			var timeout = currentTask.timeout || 30000;
+			var timeout = currentTask.timeout || ASYNC_TASK_DEFAULT_TIMEOUT;
 			if(currentTaskStartTime + timeout < currentTime) {
 				currentTask.error();
 			}
 			return;
 		}
 		
-		// If no task in the queue
+		if(currentTask === undefined) {
-		if(asyncTaskQueue.length === 0) {
+			// If no task in the queue
-			return;
+			if(asyncTaskQueue.length === 0) {
+				return;
+			}
+			
+			// Dequeue an enqueued task 
+			currentTask = asyncTaskQueue.shift();
+			currentTaskStartTime = currentTime;
+			showWorkingIndicator(true);
+			
+			// Set task attributes and functions
+			currentTask.finished = false;
+			currentTask.retryCounter = 0;
+			currentTask.finish = function() {
+				this.finished = true;
+				showWorkingIndicator(false);
+				currentTask = undefined;
+				currentTaskRunning = false;
+				asyncTaskRunner.runTask();
+			};
+			currentTask.success = function() {
+				if(this.finished === true) {
+					return;
+				}
+				try {
+					if(this.onSuccess) {
+						this.onSuccess();
+					}
+				} finally {
+					this.finish();
+				}
+			};
+			currentTask.error = function() {
+				if(this.finished === true) {
+					return;
+				}
+				try {
+					if(this.onError) {
+						this.onError();
+					}
+				} finally {
+					this.finish();
+				}
+			};
+			currentTask.retry = function() {
+				if(this.finished === true) {
+					return;
+				}
+				if(currentTask.retryCounter === 5) {
+					this.error();
+					return;
+				}
+				// Implement an exponential backoff
+				var delay = (Math.pow(2, currentTask.retryCounter++) + Math.random()) * 1000;
+				console.log(delay);
+				currentTaskStartTime = currentTime + delay;
+				currentTaskRunning = false;
+				asyncTaskRunner.runTask();
+			};
 		}
-		currentTask = asyncTaskQueue.shift();
-		currentTaskStartTime = currentTime;
-		showWorkingIndicator(true);
 		
-		// Set task attributes and functions
+		// Run the task
-		currentTask.finished = false;
+		if(currentTaskStartTime <= currentTime) {
-		currentTask.finish = function() {
+			currentTaskRunning = true;
-			this.finished = true;
+			currentTask.run();
-			showWorkingIndicator(false);
+		}
-			currentTask = undefined;
-			asyncTaskRunner.runTask();
-		};
-		currentTask.success = function() {
-			if(this.finished === true) {
-				return;
-			}
-			if(this.onSuccess) {
-				this.onSuccess();
-			}
-			this.finish();
-		};
-		currentTask.error = function() {
-			if(this.finished === true) {
-				return;
-			}
-			if(this.onError) {
-				this.onError();
-			}
-			this.finish();
-		};
-		currentTask.run();
 	};
 	
 	// Add a task in the queue

js/gdrive.js

@@ -1,10 +1,11 @@
 var GOOGLE_CLIENT_ID = '241271498917-jpto9lls9fqnem1e4h6ppds9uob8rpvu.apps.googleusercontent.com';
 var SCOPES = [ 'https://www.googleapis.com/auth/drive.install',
 	'https://www.googleapis.com/auth/drive.file' ];
+var AUTH_POPUP_TIMEOUT = 90000;
 
 var gdriveDelayedFunction = undefined;
 function runGdriveDelayedFunction() {
-	if(gdriveDelayedFunction !== undefined) {
+	if (gdriveDelayedFunction !== undefined) {
 		gdriveDelayedFunction();
 	}
 }
@@ -13,30 +14,31 @@ var gdrive = (function($) {
 
 	var connected = false;
 	var authenticated = false;
-	var doNothing = function() {};
+	var doNothing = function() {
+	};
 
 	var gdrive = {};
-	
+
 	// Try to connect Gdrive by downloading client.js
 	function connect(callback) {
 		callback = callback || doNothing;
 		var asyncTask = {};
 		asyncTask.run = function() {
-			if(connected === true) {
+			if (connected === true) {
 				asyncTask.success();
 				return;
 			}
 			gdriveDelayedFunction = function() {
 				asyncTask.success();
 			};
-			$.ajax({
+			$
-				url: "https://apis.google.com/js/client.js?onload=runGdriveDelayedFunction",
+				.ajax(
-				dataType: "script",
+					{
-				timeout: 5000
+						url : "https://apis.google.com/js/client.js?onload=runGdriveDelayedFunction",
-			})
+						dataType : "script", timeout : AJAX_TIMEOUT }).fail(
-			.fail(function() {
+					function() {
-				asyncTask.error();
+						asyncTask.error();
-			});
+					});
 		};
 		asyncTask.onSuccess = function() {
 			gdriveDelayedFunction = undefined;
@@ -50,31 +52,35 @@ var gdrive = (function($) {
 		};
 		asyncTaskRunner.addTask(asyncTask);
 	}
-	
+
 	// Try to authenticate with Oauth
 	function authenticate(callback, immediate) {
 		callback = callback || doNothing;
-		if(immediate === undefined) {
+		if (immediate === undefined) {
 			immediate = true;
 		}
 		connect(function() {
-			if(connected === false) {
+			if (connected === false) {
 				callback();
 				return;
 			}
-			
+
 			var asyncTask = {};
 			// If not immediate we add time for user to enter his credentials
-			if(immediate === false) {
+			if (immediate === false) {
-				asyncTask.timeout = 90000;
+				asyncTask.timeout = AUTH_POPUP_TIMEOUT;
 			}
 			asyncTask.run = function() {
-				if(authenticated === true) {
+				if (authenticated === true) {
 					asyncTask.success();
 					return;
 				}
-				gapi.auth.authorize({ 'client_id' : GOOGLE_CLIENT_ID, 'scope' : SCOPES,
+				if (immediate === false) {
-					'immediate' : immediate }, function(authResult) {
+					showMessage("Please make sure the Google authorization popup is not blocked by your browser...");
+				}
+				gapi.auth.authorize({ 'client_id' : GOOGLE_CLIENT_ID,
+					'scope' : SCOPES, 'immediate' : immediate }, function(
+					authResult) {
 					if (!authResult || authResult.error) {
 						asyncTask.error();
 						return;
@@ -90,7 +96,7 @@ var gdrive = (function($) {
 			};
 			asyncTask.onError = function() {
 				// If immediate did not work retry without immediate flag
-				if(connected === true && immediate === true) {
+				if (connected === true && immediate === true) {
 					authenticate(callback, false);
 					return;
 				}
@@ -100,14 +106,45 @@ var gdrive = (function($) {
 		});
 	}
 
+	function handleError(response, asyncTask, callback) {
+		var errorMsg = undefined;
+		if (response && response.error) {
+			var error = response.error;
+			// Try to analyze the error
+			if (error.code >= 500 && error.code < 600) {
+				errorMsg = "Google Drive is not accessible.";
+				// Retry as described in Google's best practices
+				asyncTask.retry();
+				return;
+			} else if (error.code === 401) {
+				authenticated = false;
+				errorMsg = "Access to Google Drive is not authorized.";
+			} else if (error.code === -1) {
+				connected = false;
+				authenticated = false;
+				onOffline();
+			} else {
+				errorMsg = "Google Drive error (" + error.code + ": "
+					+ error.message + ").";
+			}
+		}
+		asyncTask.onError = function() {
+			if (errorMsg !== undefined) {
+				showError(errorMsg);
+			}
+			callback();
+		};
+		asyncTask.error();
+	}
+
 	function upload(fileId, parentId, title, content, callback) {
 		callback = callback || doNothing;
 		authenticate(function() {
-			if(connected === false) {
+			if (connected === false) {
 				callback();
 				return;
 			}
-			
+
 			var fileIndex = undefined;
 			var asyncTask = {};
 			asyncTask.run = function() {
@@ -117,13 +154,14 @@ var gdrive = (function($) {
 
 				var contentType = 'text/x-markdown';
 				var metadata = { title : title, mimeType : contentType };
-				if (parentId) {
+				if (parentId !== undefined) {
 					// Specify the directory
-					metadata.parents = [ { kind : 'drive#fileLink', id : parentId } ];
+					metadata.parents = [ { kind : 'drive#fileLink',
+						id : parentId } ];
 				}
 				var path = '/upload/drive/v2/files';
 				var method = 'POST';
-				if (fileId) {
+				if (fileId !== undefined) {
 					// If it's an update
 					path += "/" + fileId;
 					method = 'PUT';
@@ -133,59 +171,151 @@ var gdrive = (function($) {
 				var multipartRequestBody = delimiter
 					+ 'Content-Type: application/json\r\n\r\n'
 					+ JSON.stringify(metadata) + delimiter + 'Content-Type: '
-					+ contentType + '\r\n' + 'Content-Transfer-Encoding: base64\r\n'
+					+ contentType + '\r\n'
-					+ '\r\n' + base64Data + close_delim;
+					+ 'Content-Transfer-Encoding: base64\r\n' + '\r\n'
+					+ base64Data + close_delim;
 
-				var request = gapi.client.request({
+				var request = gapi.client
-					'path' : path,
+					.request({
-					'method' : method,
+						'path' : path,
-					'params' : { 'uploadType' : 'multipart', },
+						'method' : method,
-					'headers' : { 'Content-Type' : 'multipart/mixed; boundary="'
+						'params' : { 'uploadType' : 'multipart', },
-						+ boundary + '"', }, 'body' : multipartRequestBody, });
+						'headers' : { 'Content-Type' : 'multipart/mixed; boundary="'
-				request.execute(function(file) {
+							+ boundary + '"', }, 'body' : multipartRequestBody, });
-					if(file.id) {
+				request.execute(function(response) {
+					if (response && response.id) {
 						// Upload success
-						fileIndex = SYNC_PROVIDER_GDRIVE + file.id;
+						fileIndex = SYNC_PROVIDER_GDRIVE + response.id;
-						localStorage[fileIndex + ".etag"] = file.etag;
+						localStorage[fileIndex + ".etag"] = response.etag;
 						asyncTask.success();
-						return
+						return;
 					}
-					// Upload failed, try to analyse
+					// If file has been removed from Google Drive
-					if(file.error.code === 401) {
+					if(fileId !== undefined && response.error.code === 404) {
-						showError("Google Drive is not accessible.");
+						showMessage('"' + title + '" has been removed from Google Drive.');
+						fileManager.removeSync(SYNC_PROVIDER_GDRIVE + fileId);
+						fileManager.updateFileTitles();
+						// Avoid error analyzed by handleError
+						response = undefined;
 					}
-					else {
+					// Handle error
-						connected = false;
+					handleError(response, asyncTask, callback);
-						authenticated = false;
-						onOffline();
-					}
-					asyncTask.error();
 				});
 			};
 			asyncTask.onSuccess = function() {
 				callback(fileIndex);
 			};
-			asyncTask.onError = function() {
+			asyncTaskRunner.addTask(asyncTask);
+		});
+	}
+
+	gdrive.checkUpdates = function(lastChangeId, callback) {
+		callback = callback || doNothing;
+		authenticate(function() {
+			if (connected === false) {
 				callback();
+				return;
+			}
+
+			var changes = [];
+			var newChangeId = lastChangeId || 0;
+			function retrievePageOfChanges(request) {
+				var nextPageToken = undefined;
+				var asyncTask = {};
+				asyncTask.run = function() {
+					request
+						.execute(function(response) {
+							if (response && response.largestChangeId) {
+								// Retrieve success
+								newChangeId = response.largestChangeId;
+								nextPageToken = response.nextPageToken;
+								if (response.items !== undefined) {
+									for ( var i = 0; i < response.items.length; i++) {
+										var item = response.items[i];
+										var etag = localStorage[SYNC_PROVIDER_GDRIVE
+											+ item.fileId + ".etag"];
+										if (etag
+											&& (item.deleted === true || item.file.etag != etag)) {
+											changes.push(item);
+										}
+									}
+								}
+								asyncTask.success();
+								return;
+							}
+							// Handle error
+							handleError(response, asyncTask, callback);
+						});
+				};
+				asyncTask.onSuccess = function() {
+					if (nextPageToken !== undefined) {
+						request = gapi.client.drive.changes
+							.list({ 'pageToken' : nextPageToken });
+						retrievePageOfChanges(request);
+					} else {
+						callback(changes, newChangeId);
+					}
+				};
+				asyncTaskRunner.addTask(asyncTask);
+			}
+			var initialRequest = gapi.client.drive.changes
+				.list({ 'startChangeId' : newChangeId + 1 });
+			retrievePageOfChanges(initialRequest);
+		});
+	};
+
+	gdrive.downloadContent = function(objects, callback, result) {
+		callback = callback || doNothing;
+		result = result || [];
+		if(objects.length === 0) {
+			callback(result);
+			return;
+		}
+		
+		var object = objects.pop();
+		result.push(object);
+		var file = undefined;
+		// object may be a file
+		if(object.kind == "drive#file") {
+			file = object;
+		}
+		// object may be a change
+		else if(object.kind == "drive#change") {
+			file = object.file;
+		}
+		if(file === undefined) {
+			this.downloadContent(objects, callback, result);
+			return;
+		}
+
+		authenticate(function() {
+			if (connected === false) {
+				callback();
+				return;
+			}
+
+			var asyncTask = {};
+			asyncTask.run = function() {
+				var accessToken = gapi.auth.getToken().access_token;
+				$
+					.ajax(
+						{
+							url : file.downloadUrl,
+							headers : { "Authorization" : "Bearer "
+								+ accessToken }, dataType : "text",
+							timeout : AJAX_TIMEOUT }).done(
+						function(data, textStatus, jqXHR) {
+							file.content = data;
+							asyncTask.success();
+						}).fail(function() {
+						asyncTask.error();
+					});
+			};
+			asyncTask.onSuccess = function() {
+				gdrive.downloadContent(objects, callback, result);
 			};
 			asyncTaskRunner.addTask(asyncTask);
-		});		
+		});
-	}
-	;
-
-	gdrive.init = function() {
-		try {
-			var state = JSON.parse(decodeURI((/state=(.+?)(&|$)/
-				.exec(location.search) || [ , null ])[1]));
-			if (state.action == 'create') {
-				upload(undefined, state.folderId,
-					fileManager.currentFile, fileManager.content, function(
-						fileIndex) {
-						console.log(fileIndex);
-					});
-			}
-		} catch (e) {
-		}
 	};
 
 	gdrive.createFile = function(title, content, callback) {
@@ -195,6 +325,20 @@ var gdrive = (function($) {
 	gdrive.updateFile = function(id, title, content, callback) {
 		upload(id, undefined, title, content, callback);
 	};
-	
+
+	gdrive.init = function() {
+		try {
+			var state = JSON.parse(decodeURI((/state=(.+?)(&|$)/
+				.exec(location.search) || [ , null ])[1]));
+			if (state.action == 'create') {
+				upload(undefined, state.folderId, fileManager.currentFile,
+					fileManager.content, function(fileIndex) {
+						console.log(fileIndex);
+					});
+			}
+		} catch (e) {
+		}
+	};
+
 	return gdrive;
 })(jQuery);

js/main.js

@@ -18,6 +18,8 @@ function showWorkingIndicator(show) {
 	}
 }
 
+var AJAX_TIMEOUT = 5000;
+var CHECK_ONLINE_PERIOD = 60000;
 var offline = false;
 var offlineTime = currentTime;
 function onOffline() {
@@ -36,21 +38,24 @@ function onOnline() {
 		'jGrowl.beforeClose');
 }
 
-function autoClean() {
+function checkOnline() {
 	// Try to reconnect if we are offline but we have some network
 	if (offline === true && navigator.onLine === true
-		&& offlineTime + 60000 < currentTime) {
+		&& offlineTime + CHECK_ONLINE_PERIOD < currentTime) {
 		offlineTime = currentTime;
 		// Try to download anything to test the connection
 		$.ajax(
-			{ url : "https://apis.google.com/js/client.js", timeout : 5000,
+			{ url : "https://apis.google.com/js/client.js",
-				dataType : "script" }).done(function() {
+				timeout : AJAX_TIMEOUT, dataType : "script" }).done(function() {
 			onOnline();
 		});
 	}
 }
 
+var SYNC_DOWN_PERIOD = 60000;
 var SYNC_PROVIDER_GDRIVE = "sync.gdrive.";
+var syncGoogleDrive = false;
+
 var synchronizer = (function($) {
 	var synchronizer = {};
 
@@ -76,14 +81,13 @@ var synchronizer = (function($) {
 		}
 	};
 
-	// Recursive function to run synchronization of a single file on multiple
+	// Recursive function to upload a single file on multiple locations
-	// locations
+	function fileUp(fileSyncIndexList, content, title) {
-	function sync(fileSyncIndexList, content, title) {
 		if (fileSyncIndexList.length === 0) {
 			localStorage.removeItem("sync.current");
-			running = false;
+			uploadRunning = false;
 			// run the next file synchronization
-			synchronizer.run();
+			synchronizer.syncUp();
 			return;
 		}
 		var fileSyncIndex = fileSyncIndexList.pop();
@@ -92,28 +96,28 @@ var synchronizer = (function($) {
 		if (fileSyncIndex.indexOf(SYNC_PROVIDER_GDRIVE) === 0) {
 			var id = fileSyncIndex.substring(SYNC_PROVIDER_GDRIVE.length);
 			gdrive.updateFile(id, title, content, function(result) {
-				if (!result && offline) {
+				if (result === undefined && offline === true) {
 					// If we detect offline mode we put the fileIndex back in
 					// the queue
 					synchronizer.addFile(localStorage["sync.current"]);
 					localStorage.removeItem("sync.current");
-					running = false;
+					uploadRunning = false;
 					return;
 				}
-				sync(fileSyncIndexList, content, title);
+				fileUp(fileSyncIndexList, content, title);
 			});
 		} else {
-			sync(fileSyncIndexList, content, title);
+			fileUp(fileSyncIndexList, content, title);
 		}
 	}
 
-	var running = false;
+	var uploadRunning = false;
-	synchronizer.run = function() {
+	synchronizer.syncUp = function() {
-		// If synchronization is already running or nothing to synchronize
+		// If syncUp is already running or nothing to synchronize or offline
-		if (running || syncQueue.length === 1 || offline) {
+		if (uploadRunning || syncQueue.length === 1 || offline) {
 			return;
 		}
-		running = true;
+		uploadRunning = true;
 
 		// Dequeue the fileIndex
 		var separatorPos = syncQueue.indexOf(";", 1);
@@ -127,7 +131,101 @@ var synchronizer = (function($) {
 
 		// Parse the list of synchronized locations associated to the file
 		var fileSyncIndexList = localStorage[fileIndex + ".sync"].split(";");
-		sync(fileSyncIndexList, content, title);
+		fileUp(fileSyncIndexList, content, title);
+	};
+
+	function syncDownGdrive(callback) {
+		if (syncGoogleDrive === false) {
+			callback();
+			return;
+		}
+		var lastChangeId = parseInt(localStorage[SYNC_PROVIDER_GDRIVE
+			+ "lastChangeId"]);
+		gdrive.checkUpdates(lastChangeId, function(changes, newChangeId) {
+			if (changes === undefined) {
+				callback();
+				return;
+			}
+			gdrive.downloadContent(changes, function(changes) {
+				if (changes === undefined) {
+					callback();
+					return;
+				}
+				var updateFileTitles = false;
+				for ( var i = 0; i < changes.length; i++) {
+					var change = changes[i];
+					var fileSyncIndex = SYNC_PROVIDER_GDRIVE + change.fileId;
+					var fileIndexList = localStorage["file.list"].split(";");
+					var fileIndex = undefined;
+					// Look for local file associated to this synchronized location 
+					for ( var i = 1; i < fileIndexList.length - 1; i++) {
+						var tempFileIndex = fileIndexList[i];
+						var sync = localStorage[tempFileIndex + ".sync"];
+						if (sync.indexOf(";" + fileSyncIndex + ";") !== -1) {
+							fileIndex = tempFileIndex;
+							break;
+						}
+					}
+					// No file corresponding (this should never happen...)
+					if(fileIndex === undefined) {
+						// We can remove the stored etag
+						localStorage.removeItem(fileSyncIndex + ".etag");
+						continue;
+					}
+					var title = localStorage[fileIndex + ".title"];
+					// File deleted
+					if (change.deleted === true) {
+						fileManager.removeSync(fileSyncIndex);
+						updateFileTitles = true;
+						showMessage('"' + title + '" has been removed from Google Drive.');
+						continue;
+					}
+					var content = localStorage[fileIndex + ".content"];
+					var file = change.file;
+					// File title changed
+					if(title != file.title) {
+						localStorage[fileIndex + ".title"] = file.title;
+						updateFileTitles = true;
+						showMessage('"' + title + '" has been renamed to "' + file.title + '" on Google Drive.');
+					}
+					// File content changed
+					if(content != file.content) {
+						localStorage[fileIndex + ".content"] = file.content;
+						showMessage('"' + file.title + '" has been updated from Google Drive.');
+						if(fileIndex == localStorage["file.current"]) {
+							updateFileTitles = false; // Done by next function
+							fileManager.selectFile();
+						}
+					}
+					// Update file etag
+					localStorage[fileSyncIndex + ".etag"] = file.etag;
+					// Synchronize file to others locations
+					synchronizer.addFile(fileIndex);
+				}
+				if(updateFileTitles) {
+					fileManager.updateFileTitles();
+				}
+				localStorage[SYNC_PROVIDER_GDRIVE
+				 			+ "lastChangeId"] = newChangeId;
+				callback();
+			});
+		});
+	}
+
+	var downloadRunning = false;
+	var lastSyncDown = 0;
+	synchronizer.syncDown = function() {
+		// If syncDown is already running or timeout is not reached or offline
+		if (downloadRunning || lastSyncDown + SYNC_DOWN_PERIOD > currentTime
+			|| offline) {
+			return;
+		}
+		downloadRunning = true;
+		lastSyncDown = currentTime;
+
+		syncDownGdrive(function() {
+			downloadRunning = false;
+		});
 	};
 
 	return synchronizer;
@@ -143,19 +241,21 @@ var fileManager = (function($) {
 		synchronizer.init();
 		fileManager.selectFile();
 
-		// Save file automatically and synchronize
+		// Do periodic stuff
 		window.setInterval(function() {
 			currentTime = new Date().getTime();
 			fileManager.saveFile();
-			synchronizer.run();
+			synchronizer.syncDown();
+			synchronizer.syncUp();
 			asyncTaskRunner.runTask();
-			autoClean();
+			checkOnline();
 		}, 1000);
 
 		$(".action-create-file").click(function() {
 			fileManager.saveFile();
 			fileManager.createFile();
 			fileManager.selectFile();
+			$("#file-title").click();
 		});
 		$(".action-remove-file").click(function() {
 			fileManager.deleteFile();
@@ -172,8 +272,7 @@ var fileManager = (function($) {
 				var fileIndexTitle = localStorage["file.current"] + ".title";
 				if (title != localStorage[fileIndexTitle]) {
 					localStorage[fileIndexTitle] = title;
-					updateFileDescList();
+					fileManager.updateFileTitles();
-					updateFileTitleUI();
 					save = true;
 				}
 			}
@@ -205,23 +304,18 @@ var fileManager = (function($) {
 			localStorage["file.counter"] = 0;
 			localStorage["file.list"] = ";";
 		}
-		updateFileDescList();
 		// If no file create one
-		if (fileDescList.length === 0) {
+		if (localStorage["file.list"].length === 1) {
 			this.createFile();
-			updateFileDescList();
 		}
-		// If no default file take first one
+		// Update the file titles
-		if (!localStorage["file.current"]) {
+		this.updateFileTitles();
-			localStorage["file.current"] = fileDescList[0].index;
+		// Update the editor
-		}
-		// Update the editor and the file title
 		var fileIndex = localStorage["file.current"];
 		$("#wmd-input").val(localStorage[fileIndex + ".content"]);
 		core.createEditor(function() {
 			save = true;
 		});
-		updateFileTitleUI();
 	};
 
 	fileManager.createFile = function(title) {
@@ -242,18 +336,18 @@ var fileManager = (function($) {
 
 	fileManager.deleteFile = function() {
 		var fileIndex = localStorage["file.current"];
-		
+
 		// Remove synchronized locations
 		var fileSyncIndexList = localStorage[fileIndex + ".sync"].split(";");
 		for ( var i = 1; i < fileSyncIndexList.length - 1; i++) {
-			var sync = fileSyncIndexList[i];
+			var fileSyncIndex = fileSyncIndexList[i];
-			fileManager.removeSync(sync);
+			fileManager.removeSync(fileSyncIndex);
-		}		
+		}
 		localStorage.removeItem(fileIndex + ".sync");
 
 		localStorage.removeItem("file.current");
 		localStorage["file.list"] = localStorage["file.list"].replace(";"
-			+ fileIndex + ";", ";");		
+			+ fileIndex + ";", ";");
 		localStorage.removeItem(fileIndex + ".title");
 		localStorage.removeItem(fileIndex + ".content");
 	};
@@ -267,34 +361,8 @@ var fileManager = (function($) {
 			save = false;
 		}
 	};
-
+	
-	// Remove a synchronization location associated to the file
+	fileManager.updateFileTitles = function() {
-	fileManager.removeSync = function(sync) {
-		var fileIndexSync = localStorage["file.current"] + ".sync";
-		localStorage[fileIndexSync] = localStorage[fileIndexSync].replace(";"
-			+ sync + ";", ";");
-
-		localStorage.removeItem(sync + ".etag");
-	};
-
-	function uploadGdrive() {
-		$(".file-sync-indicator").removeClass("hide");
-		var fileIndex = localStorage["file.current"];
-		var content = localStorage[fileIndex + ".content"];
-		var title = localStorage[fileIndex + ".title"];
-		gdrive.createFile(title, content, function(fileSyncIndex) {
-			if (fileSyncIndex) {
-				localStorage[fileIndex + ".sync"] += fileSyncIndex + ";";
-				updateFileTitleUI();
-				showMessage('The file "' + title
-					+ '" will now be synchronized on Google Drive.');
-			} else {
-				showError("Error while creating file on Google Drive.");
-			}
-		});
-	}
-
-	function updateFileDescList() {
 		fileDescList = [];
 		$("#file-selector").empty();
 		var fileIndexList = localStorage["file.list"].split(";");
@@ -310,20 +378,24 @@ var fileManager = (function($) {
 				return 1;
 			return 0;
 		});
-	}
-	;
 
-	function updateFileTitleUI() {
+		// If no default file take first one
+		if (!localStorage["file.current"]) {
+			localStorage["file.current"] = fileDescList[0].index;
+		}
+		
+		syncGoogleDrive = false;
 		function composeTitle(fileIndex) {
 			var result = localStorage[fileIndex + ".title"];
 			var sync = localStorage[fileIndex + ".sync"];
-			if (sync.indexOf(SYNC_PROVIDER_GDRIVE) !== -1) {
+			if (sync.indexOf(";" + SYNC_PROVIDER_GDRIVE) !== -1) {
+				syncGoogleDrive = true;
 				result = '<i class="icon-gdrive"></i> ' + result;
 			}
 			return result;
 		}
 
-		// Update the editor and the file title
+		// Update the the file title and the file selector
 		var fileIndex = localStorage["file.current"];
 		var title = localStorage[fileIndex + ".title"];
 		document.title = "StackEdit - " + title;
@@ -348,8 +420,37 @@ var fileManager = (function($) {
 			}
 			$("#file-selector").append(li);
 		}
+	};
+
+	// Remove a synchronized location
+	fileManager.removeSync = function(fileSyncIndex) {
+		var fileIndexList = localStorage["file.list"].split(";");
+		// Look for local files associated to this synchronized location 
+		for ( var i = 1; i < fileIndexList.length - 1; i++) {
+			var fileIndexSync = fileIndexList[i] + ".sync";
+			localStorage[fileIndexSync] = localStorage[fileIndexSync].replace(";"
+				+ fileSyncIndex + ";", ";");
+		}
+		// Remove etag
+		localStorage.removeItem(fileSyncIndex + ".etag");
+	};
+
+	function uploadGdrive() {
+		$(".file-sync-indicator").removeClass("hide");
+		var fileIndex = localStorage["file.current"];
+		var content = localStorage[fileIndex + ".content"];
+		var title = localStorage[fileIndex + ".title"];
+		gdrive.createFile(title, content, function(fileSyncIndex) {
+			if (fileSyncIndex) {
+				localStorage[fileIndex + ".sync"] += fileSyncIndex + ";";
+				fileManager.updateFileTitles();
+				showMessage('The file "' + title
+					+ '" will now be synchronized on Google Drive.');
+			} else {
+				showError("Error while creating file on Google Drive.");
+			}
+		});
 	}
-	;
 
 	function refreshManageSync() {
 		var fileIndex = localStorage["file.current"];
@@ -362,23 +463,24 @@ var fileManager = (function($) {
 			$(".msg-no-sync").removeClass("hide");
 		}
 		for ( var i = 1; i < fileSyncIndexList.length - 1; i++) {
-			var sync = fileSyncIndexList[i];
+			var fileSyncIndex = fileSyncIndexList[i];
-			(function(sync) {
+			(function(fileSyncIndex) {
 				var line = $("<div>").addClass("input-append");
-				if (sync.indexOf(SYNC_PROVIDER_GDRIVE) === 0) {
+				if (fileSyncIndex.indexOf(SYNC_PROVIDER_GDRIVE) === 0) {
 					line.append($("<input>").prop("type", "text").prop(
 						"disabled", true).addClass("span5").val(
 						"Google Drive, FileID="
-							+ sync.substring(SYNC_PROVIDER_GDRIVE.length)));
+							+ fileSyncIndex.substring(SYNC_PROVIDER_GDRIVE.length)));
 					line.append($("<a>").addClass("btn").html(
-						'<i class="icon-trash"></i>').prop("title", "Remove this synchronized location").click(function() {
+						'<i class="icon-trash"></i>').prop("title",
-						fileManager.removeSync(sync);
+						"Remove this synchronized location").click(function() {
-						updateFileTitleUI();
+						fileManager.removeSync(fileSyncIndex);
+						fileManager.updateFileTitles();
 						refreshManageSync();
 					}));
 				}
 				$("#manage-sync-list").append(line);
-			})(sync);
+			})(fileSyncIndex);
 		}
 	}
 
@@ -493,6 +595,7 @@ var core = (function($) {
 
 	$(function() {
 
+		$.jGrowl.defaults.life = 5000;
 		$.jGrowl.defaults.closer = false;
 		$.jGrowl.defaults.closeTemplate = '';
 		$.jGrowl.defaults.position = 'bottom-right';