[webkit-dev] ImageLoader class

Hello, I am writing my own class using ImageLoader. Can somebody, please, help me with these questions: 1. How do I know that the image was loaded already? Can I set up callback somehow? 2. What should functions sourceURI() and dispatchLoadEvent() do? 3. What is pixel format for m_imageLoader.image()->image()->data()->data()? Is this the right way to access loaded image raw pixel data? 4. How can I handle animations (e.g. GIF files)? How do I know when the next image in the animation suquence is ready? Another callback? 5. Which image formats are supported? Can I add my own, like HDR? Thank you. Sergiy