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Access scene and window when properties are not null #20

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Access scene and window when properties are not null #20

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54 changes: 32 additions & 22 deletions src/main/java/com/gluonhq/scenebuilder/embedded/SceneBuilderPane.java
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@
import com.oracle.javafx.scenebuilder.kit.selectionbar.SelectionBarController;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Orientation;
Expand All @@ -71,6 +72,7 @@
import java.util.Comparator;
import java.util.List;
import java.util.ResourceBundle;
import java.util.function.Consumer;

import static com.oracle.javafx.scenebuilder.kit.editor.EditorPlatform.IS_LINUX;
import static com.oracle.javafx.scenebuilder.kit.editor.EditorPlatform.IS_MAC;
Expand Down Expand Up @@ -129,28 +131,15 @@ public Comparator<String> getSectionComparator() {
}
};
editorController.setLibrary(library);
sceneProperty().addListener(new InvalidationListener() {
@Override
public void invalidated(Observable observable) {
if (getScene() != null) {
getScene().getStylesheets().add(SceneBuilderPane.class.getResource("sb.css").toExternalForm());
getScene().windowProperty().addListener(new InvalidationListener() {
@Override
public void invalidated(Observable observable) {
if (getScene().getWindow() != null) {
editorController.setOwnerWindow((Stage) getScene().getWindow());

// custom library from module path and class path
List<Path> scan = DependenciesScanner.scan();
createCustomLibrary(scan);

getScene().windowProperty().removeListener(this);
}
}
});
sceneProperty().removeListener(this);
}
}

executeOnceWhenPropertyIsNonNull(sceneProperty(), scene -> {
scene.getStylesheets().add(SceneBuilderPane.class.getResource("sb.css").toExternalForm());
executeOnceWhenPropertyIsNonNull(scene.windowProperty(), window -> {
editorController.setOwnerWindow((Stage) window);
// custom library from module path and class path
List<Path> scan = DependenciesScanner.scan();
createCustomLibrary(scan);
});
});

SplitPane mainPane = new SplitPane(createLeftSide(), createCenter(), createRightSide());
Expand Down Expand Up @@ -332,4 +321,25 @@ private String getUserLibraryFolder() {
}
return userLibraryFolder;
}

private static <T> void executeOnceWhenPropertyIsNonNull(ObservableValue<T> p, Consumer<T> consumer) {
if (p == null) return;

T value = p.getValue();
if (value != null) {
consumer.accept(value);
} else {
final InvalidationListener listener = new InvalidationListener() {
@Override public void invalidated(Observable observable) {
T value = p.getValue();

if (value != null) {
p.removeListener(this);
consumer.accept(value);
}
}
};
p.addListener(listener);
}
}
}