This repo contains a fork of the JavaFX dialogs API as it will ship in JavaFX 8u40. It is only lightly modified to enable the fork to work without any dependency on JavaFX 8u40 itself (in other words, references to modena.css and externalised strings are updated to point to new locations). Because this codebase very infrequently changes it is not included in the ControlsFX continuous build system, but manual builds are created and made available on Maven Central here: https://oss.sonatype.org/content/repositories/releases/org/controlsfx/openjfx-dialogs/
If you experience any bugs with the openjfx dialogs library, please file bug reports over at the JavaFX Jira here: http://javafx-jira.kenai.com
As openjfx-dialogs is literally code taken from the OpenJFX project, the license is the same as it is for OpenJFX - namely, GPL+Classpath. You can read the license in the header of any of the files in the repository, or alternatively it is reproduced in LICENSE.txt in the root of the repo.