On december 3rd 2011 MigPane was migrated to become a formal module of MigLayout (starting with 4.2-SNAPSHOT). Any future improvements will be made in that project , the released jars can be downloaded from Maven central or snapshots from Sonatype.
MigPane is a wrapper for MigLayout, one of the most powerful layout managers for Swing. This wrapper allows you to use the power of MigLayout to layout nodes in JavaFX.
MigPane is a 100% JavaFX container (a.o. allowing for CSS styling) and adds methods for adding nodes with MigLayout constraints: add(Node, CC).
An example of how MigPane is used can be found in the test directory in the sourcetree or here.
To run you will required both the miglayout-javafx.jar and the miglayout-core.jar. Normally this would simply be done by adding a dependency to a build configuration:
<dependency>
<groupId>com.miglayout</groupId>
<artifactId>miglayout-javafx</artifactId>
<version>...</version>
</dependency>
However, JavaFX does not support Maven. The MigLayout JavaFX folder contains a maven.txt file which explains what to work around this problem. It is expected as JavaFX is open sourced, Maven support will become better.