The Definitive Guide to Modern Java Clients with JavaFX 17 by Stephen Chin & Johan Vos & James Weaver

Author:Stephen Chin & Johan Vos & James Weaver
Language: eng
Format: epub
ISBN: 9781484272688
Publisher: Apress

JFXPanel: Swing Component with JavaFX Inside

The way to achieve this is to use a special Swing JComponent – the JFXPanel located in the javafx.embed.swing package in the javafx.swing module. It allows you to embed a JavaFX scene graph into a Swing container hierarchy. The interesting method needed from JFXPanel ispublic void setScene(final Scene newScene)

Attaches a Scene object to display in this JFXPanel. This method can be called either on the event dispatch thread or the JavaFX Application Thread.

Swing coding rules require Swing components to always be created and accessed from the Swing event thread. JFXPanel is different in this respect. It can also be managed from the FX Application Thread. This can be helpful in the case of complex scenes, which may demand JavaFX components to be explicitly created on the FX Application Thread.

Besides the threading aspect, which will be discussed in more detail as we progress further through the integration, the first major thing to recognize here is that the JavaFX embedding does not work on a Node or Control level, rather on a full Scene level. So, if there is a need to embed a Node, for example, a Chart, you cannot just add the Chart instance to the Swing component hierarchy. Instead, you have to create a full Scene and add this using JFXPanel as a Swing component wrapper around your Scene.

With this, a full-fledged small example for an integrated JavaFX Scene can be seen in Listing 7-1.

Note

All following examples are reduced as much as possible so that the integration handling becomes obvious, not the architecture in terms of object-oriented or functional programming. Typically, the only thing needed is a main method into which you can copy and paste the example code. If further special code is needed, this is pointed out in the description for the example.

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