I have this code this is very basic and it's used to close all tabs in a TabPane.
MenuItem item4 = new MenuItem("Close All Tabs");
item4.setOnAction(new EventHandler<ActionEvent>()
{
#Override
public void handle(ActionEvent e)
{
System.out.println("Close All Tabs");
int ee = tabPane.getTabs().size();
tabPane.getTabs().remove(0, ee);
}
});
I want to optimize this part of the code:
int ee = tabPane.getTabs().size();
tabPane.getTabs().remove(0, ee);
Is there any other clear and optimized solution?
Maybe
tabPane.getTabs().clear();
Related
In my JavaFX Application I want to disable a couple of Buttons during a refresh of the data from a database.
I am using the disableProperty of the Buttons I want to disable.
Here is the basic JavaFX Application, modefied to illustrate my point:
public class BindLengthy extends Application {
BooleanProperty disable = new SimpleBooleanProperty(false);
#Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.disableProperty().bind(disable);
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
disable.set(true);
try {
Thread.sleep(5000);
} catch (InterruptedException ex) {
Logger.getLogger(BindLengthy.class.getName()).log(Level.SEVERE, null, ex);
}
btn.setText("Done");
}
});
//Do all the other stuff that needs to be done to launch the application
//Like adding btn to the scene and so on...
primaryStage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
When executed, on the click the Button stays in the "fired" mode, waits for 5 Seconds and then changes text and disables. While I want the text to change later, I want to disableProperty Change to take effect immediately!
I tried putting the lengthy operation, represented by Thread.sleep(5000) into a task and start it on a new Thread(task), but then obviously the text is changes before the Thread awakens.
I can't put the btn.setText("Done")into the Threadas it wouldn't be executed on the JavaFX-Thread(which it needs to). So I tried joining the Thread, yet that gives the same result as not putting it into an extra Thread as well.
How can I force the diableProperty to register the new value before executing my long operation?
Use a Task and use its onSucceeded handler to update the UI:
public class BindLengthy extends Application {
BooleanProperty disable = new SimpleBooleanProperty(false);
#Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.disableProperty().bind(disable);
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
disable.set(true);
Task<String> task = new Task<String>() {
#Override
public String call() throws Exception {
Thread.sleep(5000);
return "Done" ;
}
});
task.setOnFailed(e ->
Logger.getLogger(BindLengthy.class.getName())
.log(Level.SEVERE, null, task.getException()));
task.setOnSucceeded(e -> {
btn.setText(task.getValue());
disable.set(false);
});
Thread t = new Thread(task);
t.setDaemon(true);
t.start();
}
});
//Do all the other stuff that needs to be done to launch the application
//Like adding btn to the scene and so on...
primaryStage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
I want to disable a button for a specific time in JavaFX application. Is there any option to do this? If not, is there any work around for this?
Below is my code in application. I tried Thread.sleep, but i know this is not the good way to stop the user from clicking on next button.
nextButton.setDisable(true);
final Timeline animation = new Timeline(
new KeyFrame(Duration.seconds(delayTime),
new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent actionEvent) {
nextButton.setDisable(false);
}
}));
animation.setCycleCount(1);
animation.play();
You could use the simple approach of a thread that provides the relevant GUI calls (through runLater() of course):
new Thread() {
public void run() {
Platform.runLater(new Runnable() {
public void run() {
myButton.setDisable(true);
}
}
try {
Thread.sleep(5000); //5 seconds, obviously replace with your chosen time
}
catch(InterruptedException ex) {
}
Platform.runLater(new Runnable() {
public void run() {
myButton.setDisable(false);
}
}
}
}.start();
It's perhaps not the neatest way of achieving it, but works safely.
You could also be using the Timeline:
final Button myButton = new Button("Wait for " + delayTime + " seconds.");
myButton.setDisable(true);
final Timeline animation = new Timeline(
new KeyFrame(Duration.seconds(delayTime),
new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent actionEvent) {
myButton.setDisable(false);
}
}));
animation.setCycleCount(1);
animation.play();
The method to disable a JavaFX control is:
myButton.setDisable(true);
You can implement the time logic programmatically in any way you wish, either by polling a timer or by having this method invoked in response to some event.
If you have created this button instance through FXML in SceneBuilder, then you should assign the button an fx:id so that its reference is automatically injected into your controller object during the loading of the scene graph. This will make it easier for you to work with in your controller code.
If you have created this button programmatically, then you'll already have its reference available in your code.
Or you could use a Service and bind the running property to the disableProperty of the button do you want to disable.
public void start(Stage stage) throws Exception {
VBox vbox = new VBox(10.0);
vbox.setAlignment(Pos.CENTER);
final Button button = new Button("Your Button Name");
button.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
Service<Void> service = new Service<Void>() {
#Override
protected Task<Void> createTask() {
return new Task<Void>() {
#Override
protected Void call() throws Exception {
Thread.sleep(5000);//Waiting time
return null;
}
};
}
};
button.disableProperty().bind(service.runningProperty());
service.start();
}
});
vbox.getChildren().addAll(button);
Scene scene = new Scene(vbox, 300, 300);
stage.setScene(scene);
stage.show();
}
But the Timeline solution given by Uluk Biy, looks more elegant.
I'm building an application in JavaFx 2.2 which consist in a splitpane with a panel of component on the left side and a working sheet on the right side. Basically what i would like to do is a simple wysiwyg editor where you drag component from the left to the right, then arrange them on the right side.
I've spent the last couple of days trying to implement the same drag-and-drop feature that has SceneBuilder, without luck..
Following the sample at http://docs.oracle.com/javafx/2/drag_drop/HelloDragAndDrop.java.html i've managed to get a drag-and-drop working but i can't find any way to change the default file icon appearing when you are dragging (and replace it with a snapshot of the component i'm dragging) and how to show the forbidden icon when you are over something you can't dropped on.
Any help (could be advice, code snippet, sample or else) would be greatly appreciated :)
Thanks !
[UPDATE]
Finally managed it myself:
/* The 'sceneRoot' object is the root Node of the scene graph
* stage.setScene(new Scene(sceneRoot, 1280, 1024));
*/
private ImageView dragImageView = new ImageView();
private Node dragItem;
_
rightPane.setOnMouseDragEntered(new EventHandler<MouseDragEvent>() {
public void handle(MouseDragEvent e) {
rightPane.setStyle("-fx-border-color:red;-fx-border-width:2;-fx-border-style:solid;");
e.consume();
}
});
rightPane.setOnMouseDragExited(new EventHandler<MouseDragEvent>() {
public void handle(MouseDragEvent e) {
rightPane.setStyle("-fx-border-style:none;");
e.consume();
}
});
rightPane.setOnMouseDragReleased(new EventHandler<MouseDragEvent>() {
public void handle(MouseDragEvent e) {
//TODO: add new instance of dragItem to rightPane
e.consume();
}
});
_
private void addGesture(final Node node) {
node.setOnDragDetected(new EventHandler<MouseEvent>() {
public void handle(MouseEvent e) {
SnapshotParameters snapParams = new SnapshotParameters();
snapParams.setFill(Color.TRANSPARENT);
dragImageView.setImage(node.snapshot(snapParams, null));
sceneRoot.getChildren().add(dragImageView);
dragImageView.startFullDrag();
e.consume();
}
});
node.setOnMouseDragged(new EventHandler<MouseEvent>() {
public void handle(MouseEvent e) {
Point2D localPoint = sceneRoot.sceneToLocal(new Point2D(e.getSceneX(), e.getSceneY()));
dragImageView.relocate(
(int)(localPoint.getX() - dragImageView.getBoundsInLocal().getWidth() / 2),
(int)(localPoint.getY() - dragImageView.getBoundsInLocal().getHeight() / 2)
);
e.consume();
}
});
node.setOnMouseEntered(new EventHandler<MouseEvent>() {
public void handle(MouseEvent e) {
node.setCursor(Cursor.HAND);
}
});
node.setOnMousePressed(new EventHandler<MouseEvent>() {
public void handle(MouseEvent e) {
dragItem = node;
dragImageView.setMouseTransparent(true);
node.setMouseTransparent(true);
node.setCursor(Cursor.CLOSED_HAND);
}
});
node.setOnMouseReleased(new EventHandler<MouseEvent>() {
public void handle(MouseEvent e) {
dragItem = null;
dragImageView.setMouseTransparent(false);
node.setMouseTransparent(false);
node.setCursor(Cursor.DEFAULT);
sceneRoot.getChildren().remove(dragImageView);
}
});
}
Maybe late, but with the setDragView option, is more simpple by now :)
// Cursor Display for Drag&Drop
source.setOnMouseEntered(e -> source.setCursor(Cursor.OPEN_HAND));
source.setOnMousePressed(e -> source.setCursor(Cursor.CLOSED_HAND));
source.setOnMouseReleased(e -> source.setCursor(Cursor.DEFAULT));
// Manage drag
source.setOnDragDetected(event -> {
/* drag was detected, start a drag-and-drop gesture*/
Dragboard db = source.startDragAndDrop(TransferMode.MOVE);
// Visual during drag
SnapshotParameters snapshotParameters = new SnapshotParameters();
snapshotParameters.setFill(Color.TRANSPARENT);
db.setDragView(source.snapshot(snapshotParameters, null));
/* Put a string on a dragboard */
ClipboardContent content = new ClipboardContent();
content.putString(source.getText());
db.setContent(content);
event.consume();
});
I have a problem with a Context menu in JavaFx 2:it never disappers when I left click on the graph of the JFXPanel
Does anybody knows how to solve this problem?
Thanks
Here is my code
final ContextMenu cm = new ContextMenu();
MenuItem chartItem1 = new MenuItem("Chart Settings");
cm.getItems().add(chartItem1);
getScene().setOnMouseReleased(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent mouseEvent) {
if(cm.isShowing()){
cm.hide();
}
if(mouseEvent.getButton() == MouseButton.SECONDARY)
{
cm.show(getScene().getRoot(), mouseEvent.getScreenX(), mouseEvent.getScreenY());
}
}
});
chartItem1.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent t) {
dialogs.ChartFormat cs = new dialogs.ChartFormat(null, true);
cs.setLocationRelativeTo(null);
cs.setVisible(true);
}
});
Reproduced the described behavior. Don't know the reason but you can use ContextMenu#hide():
final ContextMenu cm = new ContextMenu();
MenuItem menuItem = new MenuItem("Item 1");
menuItem.addEventHandler(EventType.ROOT, new EventHandler<Event>() {
#Override
public void handle(Event t) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
JPanel messagePane = new JPanel();
messagePane.add(new JLabel("label"));
JDialog jDialog = new JDialog();
jDialog.getContentPane().add(messagePane);
jDialog.pack();
jDialog.setVisible(true);
}
});
}
});
cm.getItems().add(menuItem);
scene.setOnMouseReleased(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent mouseEvent) {
// if(cm.isShowing())
cm.hide();
if (mouseEvent.getButton() == MouseButton.SECONDARY) {
cm.show(lineChart, mouseEvent.getScreenX(), mouseEvent.getScreenY());
}
}
});
Also you can check out these links:
http://pixelduke.wordpress.com/2011/12/11/popupmenu-in-javafx/
http://javafx-jira.kenai.com/browse/RT-17853
http://javafx-jira.kenai.com/browse/RT-14899
Adding sample code to your question would be more descriptive.
I have a problem with drag and drop event on JFXPanel that on located JPanel. When i push drag message to DragBoard, javaFX part of application doesnt work anymore. I think its about swing event mechanizm but i am not sure. There is no problem with other events. It made me confused. Is there any solution to this problem? Thanks in advance.
public class MyScene extends Scene {
public MyScene(VBox vBoxMainLayout) {
super(vBoxMainLayout);
HBox hBox = new HBox();
hBox.setPrefSize(10000, 10000);
hBox.setSpacing(40);
Button buttonSource = new Button("Source");
buttonSource.setMinSize(60, 30);
buttonSource.setOnDragDetected(new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) {
Dragboard db = startDragAndDrop(TransferMode.ANY);
ClipboardContent content = new ClipboardContent();
String message = "Drag operatation is done";
content.putString(message);
db.setContent(content);
event.consume();
}
});
buttonSource.setOnDragDone(new EventHandler<DragEvent>() {
public void handle(DragEvent event) {
event.consume();
}
});
TextArea textAreaTarget = new TextArea();
textAreaTarget.setMinSize(200, 500);
hBox.getChildren().add(buttonSource);
hBox.getChildren().add(textAreaTarget);
vBoxMainLayout.getChildren().add(hBox);
}
}
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage stage) {
VBox vBoxMainLayout = new VBox();
MyScene myScene = new MyScene(vBoxMainLayout);
JFrame frame = new JFrame();
JFXPanel arg0 = new JFXPanel();
arg0.setScene(myScene);
frame.getContentPane().add(arg0);
frame.setVisible(true);
}
}
It was a known deadlock in JavaFX 2.1 and pushed to 2.2 (thats what i learned from oracle ) but i guess it stil not solved.