根据给定的IEditPar或IEditorInput获取IFile实例。

根据IEditorInput获取IFile实例
　public static IFile getFile(IEditorInput editorInput) {
if (editorInput == null) {
return null;
}
Object o = editorInput.getAdapter(IFile.class);
if (o instanceof IFile) {
return (IFile) o;
}
return null;
}

根据IEditorPart获取IFile实例

The code below will demonstrate how to do this.

IFile file = (IFile) editorPart.getEditorInput().getAdapter(IFile.class);
if (file != null) {
// do stuff
}