Hello, recently I've updated the groovy version of my project (STC with compiler-configuration) from 4.0.21 to 4.0.24 and in the process I've encountered the following unexpected error: *[Static type checking] - Cannot return value of type ...PathTreeCell for closure expecting javafx.scene.control.TreeCell<java.lang.Object>* (after further investigation it seems introduced from v4.0.22)
The error came up calling this method of the JavaFx *TreeView *(with a closure) https://openjfx.io/javadoc/21/javafx.controls/javafx/scene/control/TreeView.html#setCellFactory(javafx.util.Callback) public final void setCellFactory(Callback<TreeView<T>,TreeCell<T>> value) My code: public class PathTreeCell extends TreeCell<Path> { … } ... treeView.setCellFactory({ p -> var treeCell = new PathTreeCell(this) makeDraggable(treeCell) *// This doesn't work anymore // return treeCell* *return (TreeCell<Path>)treeCell // OK* }) This portion of code has always worked for every version of groovy STC I've used up until now. As above, the workaround is effortless, just an explicit cast to *TreeCell<Path>* Nevertheless I'm worried that it could be some sort of side effect of a regression. Is this an intentional change of behaviour or a bug? Cheers, Mirco
