/**
* Starts the asynchronous loading of the file to edit. and sets the state to {@link
* Editor#LOADING}.
*/
void fireFileLoading() {
long size = 0;
if (fileAnnotation != null) size = fileAnnotation.getFileSize();
// fileID can be annotationID if fileName is null
// E.g. if EditorModel(long annotationID) was the constructor.
currentLoader = new FileLoader(component, ctx, fileName, fileID, size);
currentLoader.load();
state = Editor.LOADING;
}
