TiwulFX-Dock provides enhanced JavaFX TabPane that supports tab reordering, detaching and docking.

Maven dependency:

<dependency>
   <groupId>com.panemu</groupId>
   <artifactId>tiwulfx-dock</artifactId>
   <version>0.1</version>
</dependency>

Wrap DetachableTabPane inside a SplitPane. Below is an example in FXML file:

<SplitPane VBox.vgrow="ALWAYS">
	<items>
		<DetachableTabPane fx:id="myTabPane" />
	</items>
</SplitPane>

Then if the java class file has a variable holding reference to the DetachableTabPane, then add this

myTabPane.setOnClosedPassSibling((sibling) -> myTabPane = sibling);

All of the following customization examples are shown in the demo projects.

When a tab is detached, a stage is created. Set the owner of the stage with this code:

myTabPane.setStageOwnerFactory((stage) -> getScene().getWindow());

To customize how detached stage looks like, use custom scene factor as follow:

myTabPane.setSceneFactory((param) -> {
	FrmScope1 frm = new FrmScope1();
	SplitPane sp = new SplitPane(param);
	VBox.setVgrow(sp, Priority.ALWAYS);
	frm.getChildren().add(sp);
	Scene scene1 = new Scene(frm);
	return scene1;
});

Take a look at styles in tiwulfx-dock.css. Provide your own version of the styles to override the style of drop guiding path and adjacent drop buttons. For a further customization of the drag-drop indicator, extends TabDropHint class and supply the instance of it to the tab pane:

myTabPane.setDropHint(new CustomDropHint());

All these customization examples are shown in the demo projects.

MIT