Cannot call layouter constructors without vgraph although null is the standard parameter

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Call a constructor of any layouter without the vgraph parameter
2.
3.

What is the expected output? What do you see instead?
Nothing should happen, since the null is a standard parameter of all the
layouters. But an error happen, because all layouters call the initModel()
method inside the constructor, which access the vgraph properties...

What version of the product are you using? On what operating system?
Last one

Original issue reported on code.google.com by [email protected] on 6 Dec 2008 at 4:59