Polished the BCL; started FileSystem.ios

Application/application.android.ts

@@ -130,6 +130,7 @@ export module tk {
                 public init() {
                     this._eventsToken = initEvents();
                     this.nativeApp.registerActivityLifecycleCallbacks(this._eventsToken);
+                    this.context = this.nativeApp.getApplicationContext();
                 }
             }
         }

FileSystem/file_system.d.ts

@@ -12,7 +12,7 @@
     /**
       * Gets the Folder object representing the parent of this entity. Will be null for a root folder like Documents or Temporary.
       */
-    public getParent(onSuccess: (folder: Folder) => any, onError?: (error: any) => any);
+    public getParent(onError?: (error: any) => any): Folder;
     /**
       * Deletes the current Entity from the file system.
       */

FileSystem/file_system.ts

@@ -1,5 +1,6 @@
 import file_access_module = require("FileSystem/file_system_access");
 
+
 // The FileSystemAccess implementation, used through all the APIs.
 var fileAccess;
 var getFileAccess = function (): file_access_module.FileSystemAccess {
@@ -27,16 +28,13 @@ export class FileSystemEntity {
     /**
         * Gets the Folder object representing the parent of this entity. Will be null for a root folder like Documents or Temporary.
         */
-    public getParent(onSuccess: (parent: Folder) => any, onError?: (error: any) => any) {
-        var localSuccess = function (path: string) {
+    public getParent(onError?: (error: any) => any): Folder {
+        var path = getFileAccess().getParent(this.path, onError);
+
         var folder = new Folder();
         folder[pathProperty] = path;
 
-            if (onSuccess) {
-                onSuccess(folder);
-            }
-        }
-                getFileAccess().getParent(this.path, localSuccess, onError);
+        return folder;
     }
     /**
         * Deletes the current entity from the file system.
@@ -191,6 +189,15 @@ export class Folder extends FileSystemEntity {
         return fileAccess.fileExists(path);
     }
 
+    /**
+        * Checks whether this Folder contains a Folder with the specified name.
+        */
+    public containsFolder(name: string): boolean {
+        var fileAccess = getFileAccess();
+        var path = fileAccess.concatPath(this.path, name);
+        return fileAccess.folderExists(path);
+    }
+
     /**
         * Deletes the current Folder (recursively) from the file system.
         */
@@ -285,7 +292,7 @@ export class KnownFolders {
     /**
         * Gets the Documents folder available for the current application. This Folder is private for the application and not accessible from Users/External apps.
         */
-    public static Documents(): Folder {
+    public static documents(): Folder {
         if (!KnownFolders._documents) {
             var path = getFileAccess().getDocumentsFolderPath();
             KnownFolders._documents = new Folder();
@@ -299,7 +306,7 @@ export class KnownFolders {
     /**
         * Gets the Temporary (Caches) folder available for the current application. This Folder is private for the application and not accessible from Users/External apps.
         */
-    public static Temporary(): Folder {
+    public static temporary(): Folder {
         if (!KnownFolders._temp) {
             var path = getFileAccess().getTempFolderPath();
             KnownFolders._temp = new Folder();

FileSystem/file_system_access.android.ts

@@ -1,5 +1,6 @@
 import app_module = require("Application/application");
 
+
 export class FileSystemAccess {
     private _encoding = "UTF-8";
     private _pathSeparator = "/";
@@ -14,18 +15,18 @@ export class FileSystemAccess {
         return new Date(javaFile.lastModified());
     }
 
-    public getParent(path: string, onSuccess: (path: string) => any, onError?: (error: any) => any) {
+    public getParent(path: string, onError?: (error: any) => any): string {
         try {
             var javaFile = new java.io.File(path);
-            if (onSuccess) {
             var parent = javaFile.getParentFile();
-                onSuccess(parent.getPath());
-            }
+            return parent.getPath();
         } catch (exception) {
             // TODO: unified approach for error messages
             if (onError) {
                 onError(exception);
             }
+
+            return undefined;
         }
     }
 

FileSystem/file_system_access.d.ts

@@ -1,10 +1,11 @@
 // TODO: Implement "hidden" notation so that such declarations are not included in the d.ts file we will provide for the users.
 //@hidden
+
 export declare class FileSystemAccess {
     getReadonly(path: string): boolean;
     getLastModified(path: string): Date;
 
-    getParent(path: string, onSuccess: (path: string) => any, onError?: (error: any) => any);
+    getParent(path: string, onError?: (error: any) => any): string;
     getFile(path: string, onSuccess: (path: string) => any, onError?: (error: any) => any);
     getFolder(path: string, onSuccess: (path: string) => any, onError?: (error: any) => any);
     enumFiles(path: string, onSuccess: (files: Array<string>) => any, onError?: (error: any) => any);
@@ -20,3 +21,4 @@ export declare class FileSystemAccess {
     readText(path: string, onSuccess: (content: string) => any, onError?: (error: any) => any);
     writeText(path: string, content: string, onSuccess?: () => any, onError?: (error: any) => any);
 }
+ 

declarations.ios.d.ts

@@ -60,8 +60,9 @@ declare module Foundation {
     }
 
     export class NSString {
+        static initWithString(s: string): NSString;
         static initWithDataEncoding(data: any, encoding: any): any;
-        static initWithString(source: string): any;
+        stringByDeletingLastPathComponent(): string;
     }
 
     export class NSURLSessionConfiguration {
@@ -78,6 +79,13 @@ declare module Foundation {
 
     export class NSURL {
         static URLWithString(url: string): any;
+        path(): string;
+        relativePath(): string;
+        relativeString(): string;
+    }
+
+    export class NSDate {
+        timeIntervalSince1970(): number;
     }
 
     export class NSMutableURLRequest {