Fixed ie7

Author: achicu

lib/utils/local_storage.js

@@ -26,7 +26,7 @@
 		toURL: function(value) {
 			return "data:text/plain;base64," + Global.Utils.encodeBase64(value || "");
 		}
-	}
+	};
 
 	function LocalStorage() {
 		this.storage = window.localStorage;
@@ -41,10 +41,14 @@
 		},
 
 		saveFileSystem: function() {
+			if (!this.storage)
+				return;
 			this.storage.setItem(this.descriptor, JSON.stringify(this.files));
 		},
 
 		readFileSystem: function() {
+			if (!this.storage)
+				return null;
 			var fileSystem = this.storage.getItem(this.descriptor);
 			if (!fileSystem)
 				return {
@@ -55,6 +59,8 @@
 		},
 
 		getDirectoryEntry: function(path, create) {
+			if (!this.files)
+				return;
 			var entry = this.files.root;
 			for (var i = 0; i < path.length; ++i) {
 				var folderName = path[i];
@@ -74,6 +80,8 @@
 		},
 
 		saveFileEntry: function(entry, value) {
+			if (!this.storage)
+				return;
 			var filePath = entry.path,
 				fileName = entry.name,
 				dirEntry = this.getDirectoryEntry(filePath, true);
@@ -90,6 +98,8 @@
 		},
 
 		removeFileEntry: function(entry, value) {
+			if (!this.storage)
+				return;
 			var filePath = entry.path,
 				fileName = entry.name,
 				dirEntry = this.getDirectoryEntry(filePath, true);
@@ -102,6 +112,8 @@
 		},
 
 		loadFileEntry: function(entry) {
+			if (!this.storage)
+				return null;
 			var filePath = entry.path,
 				fileName = entry.name,
 				dirEntry = this.getDirectoryEntry(filePath, false);
@@ -115,7 +127,7 @@
 
 		get: function(path, callback) {
 			var self = this;
-			this.getEntry(path, 
+			this.getEntry(path,
 				function(err, entry) {
 					if (err) {
 						callback(err);
@@ -149,6 +161,8 @@
 				dirEntry = this.getDirectoryEntry(filePath, true),
 				list = [],
 				self = this;
+			if (!dirEntry)
+				return callback(null, []);
 			$.each(dirEntry, function(i, entry) {
 				list.push(new FileEntry(self, filePath, entry.name));
 			});

lib/utils/utils.js

@@ -47,6 +47,13 @@
             return -1;
         };
     }
+
+    if (!window.console) {
+        window.console = {
+            error: function() { },
+            log: function() { }
+        };
+    }
 
     /*
      * Helper function to extend the prototype of a class from another base class
@@ -67,7 +74,7 @@
         identity: function(a) { return a; },
 
         clone: function(a) {
-            return JSON.parse(JSON.stringify(a));
+            return $.extend(true, {}, a);
         },
 
         upperCaseFirstLetter: function(str) {