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		final Folder trash = app.getAccount().getTrash();

		if (trash != null) {

			app.deleteFolder(trash, null); //deleteFolder will not delete the folder itself if it is a container

		}

	}

	protected void deleteSubfolder(final Iterator<Folder> iter2, final Command callback) {

		if (iter2.hasNext()) {

			final Folder f = iter2.next();

			GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {

				@Override

				public void onSuccess(final Folder _f) {

					Iterator<File> iter3 = _f.getFiles().iterator();

					deleteFile(iter3, new Command() {

						@Override

						public void execute() {

							Iterator<Folder> iter4 = _f.getSubfolders().iterator();

							deleteSubfolder(iter4, new Command() {

								@Override

								public void execute() {

									String path = _f.getUri();

									DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), _f.getOwner(), URL.encode(path)) {

										@Override

										public void onSuccess(Resource _result) {

											deleteSubfolder(iter2, callback);

										}

										@Override

										public void onError(Throwable t) {

											GWT.log("", t);

											app.setError(t);

											if (t instanceof RestException) {

												app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());

											}

											else

												app.displayError("System error deleting file:" + t.getMessage());

										}

										@Override

										protected void onUnauthorized(Response response) {

											app.sessionExpired();

										}

									};

									deleteF.setHeader("X-Auth-Token", app.getToken());

									Scheduler.get().scheduleDeferred(deleteF);

								}

							});

						}

					});

				}

				@Override

				public void onError(Throwable t) {

	                GWT.log("", t);

					app.setError(t);

	                if (t instanceof RestException) {

	                    app.displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());

	                }

	                else

	                	app.displayError("System error getting folder: " + t.getMessage());

				}

				@Override

				protected void onUnauthorized(Response response) {

					app.sessionExpired();

				}

			};

			getFolder.setHeader("X-Auth-Token", app.getToken());

			Scheduler.get().scheduleDeferred(getFolder);

		}

		else {

			if (callback != null)

				callback.execute();

		}

	}

	void deleteFile(final Iterator<File> iter, final Command callback) {

		if (iter.hasNext()) {

			File f = iter.next();

			String path = f.getUri();

			DeleteRequest deleteF = new DeleteRequest(app.getApiPath(), f.getOwner(), URL.encode(path)) {

				@Override

				public void onSuccess(Resource result) {

					deleteFile(iter, callback);

				}

				@Override

				public void onError(Throwable t) {

					GWT.log("", t);

					app.setError(t);

					if (t instanceof RestException) {

						app.displayError("Unable to delete file:" + ((RestException) t).getHttpStatusText());

					}

					else

						app.displayError("System error deleting file:" + t.getMessage());

				}

				@Override

				protected void onUnauthorized(Response response) {

					app.sessionExpired();

				}

			};

			deleteF.setHeader("X-Auth-Token", app.getToken());

			Scheduler.get().scheduleDeferred(deleteF);

		}

		else {

			if (callback != null)

				callback.execute();

		}