Welcome!
I started work on Eclipse and got stucked :)

I'm writing a pluginfor editing some xml files and have 2 problems:

1) Is there a built-in class which definied a simple Open Dialog Window
(to choose the file) - I couldn't find it in documentation and decided
to use the JFileChooser, but it looks different, and it;s just a
temporary solution.

2) I'd like to choose the file from the OpenDialogWindow ( above ) and
open it in eclipse using my plugin/editor (works on GEF). How can I do
it ???

My editor has similar structure to schemaeditor from:
http://www.eclipse.org/articles/Article-GEF-editor/gef-schema-editor.html

Any help appreciated

Best Regards
Kuba Dziedzina