<window width="100%" apply="Test1Controller">
	<button id="uploadBtn" label="Upload Image" upload="true,maxsize=300"></button>
	<button id="download" label="download"></button>
</window>

public class Test1Controller extends GenericForwardComposer {
	protected Button uploadBtn;
	
	Media media;
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);

		uploadBtn.addEventListener(Events.ON_UPLOAD, new EventListener() {
			@Override
			public void onEvent(Event evt) throws InterruptedException, IOException {
				filehandler(((UploadEvent) evt).getMedia());
			}
		});
	}

	private void filehandler(final Media media) throws InterruptedException, IOException {
		this.media = media;
	}

	public void onClick$download() {
		Filedownload.save(media, "not wat i wan.");
	}
}