I have noticed an issue with setFocusTraversable() on MenuBar control. If I call setFocusTraversable(false) on menuBar object the focus traverses (I can see the menubar getting highlighted/selected) to menu when I press Tab from TextField but the event (changed()) does not get fired. If I call setFocusTraversable(true) on menuBar object and press Tab when in TextField the focus does not visually traverses to MenuBar(TextField loses focus) but the event gets fired and additionally the focus can not be set on TextField using Tab or Shift + Tab. I am not sure if this is a bug or problem with my understanding.
Here is the code.
public class MenuTest extends Application
implements ChangeListener
{
MenuBar menuBar = new MenuBar();
TextField tf1 = new TextField("One");
public static void main(String[] args)
{
Application.launch(args);
}
#Override
public void start(Stage primaryStage)
{
Group content = new Group();
BorderPane paneLayout = new BorderPane();
final Menu menu1 = new Menu("File");
menuBar.getMenus().addAll(menu1);
Menu exit = new Menu("Exit");
menu1.getItems().add(exit);
content.getChildren().add(tf1);
paneLayout.setTop(menuBar);
paneLayout.setCenter(content);
Scene scene = new Scene(paneLayout, 300, 250);
primaryStage.setScene(scene);
primaryStage.show();
menuBar.setFocusTraversable(false);
menuBar.focusedProperty().addListener(this);
tf1.focusedProperty().addListener(this);
tf1.requestFocus();
}
public void changed(ObservableValue ov, Object t, Object t1)
{
System.out.println("focus gained - " + ov.toString());
}
}
Please help.
Thanks,
KK
PS: MenuBar API explicitly says that "MenuBar sets focusTraversable to false." but behaves differently.
Unfortunately you've met a bug: http://javafx-jira.kenai.com/browse/RT-20595
Related
Please go through the image below.
In the above image you can find that horizontal scrolling is not started.
Now visit the After Scroll image of the same contents...
Now in the second image you can see that horizontal scrolling is done ...
JFXPanel contents are scroll horizontally... Which was perfect...
Now the third image will describe the problem....
It is liitle bit stretched to see as it is maximized...
You can see that the JFXPanel contents have changed their original position...
Moreover the contents must start with X_DisplaceMent = 0.0 [X-Cordinate], which was done automatically in the first two images...
All the contents are nodes like [Rectangle,Line etc.. ], after that all are placed in Group node...
And this Group node is set in the ScrollPane through
js.setContent(Group node);
Each component is placed with given x,y cordiante value .. then how did this happen while doing the maximized ?
Please help me to find the root cause ...
Thanks in advance...
Here are some facts that cause the problem.
- Start Position of Scene : 0.0
- Start Position of Group in Scene : 49.5
- Width of the root : 364.5
- Start Position of Scene : 0.0
- Start Position of Group in Scene : 63.5
- Width of the root : 364.5
- Start Position of Scene : 0.0
- Start Position of Group in Scene : 83.5
- Width of the root : 364.5
Whenever we drag the window horizontally Group is moving in the scene... That should not happen... how to avoid this ...
Ok... Here is the MCVE.....
There is a Frame. which contain SplitPane having vertical split.
The SplitPane will show the contents of two JFxPanels.
Both fxpanels are having rectangle on same x cordinate but Y cordinate is different.
And both the fxPanels are horizontal scroll sync. Not bi-directional. When you scroll lower panel horizonatally, the upper panel will get scrolled due to horizontal sync.
Here is the code for fxPanel 1...
public class FxPanel1 extends JFXPanel
{
private ScrollPane scroll ;
public ScrollPane getJs() {
return scroll;
}
public void setJs(ScrollPane js) {
this.scroll = js;
}
private boolean initFX(JFXPanel fxPanel) {
Scene scene = createScene();
fxPanel.setScene(scene);
return true;
//craneAssignmentChartView.setFxPanel(fxPanel);
}
private Scene createScene() {
Group root = new Group();
Rectangle rect = new Rectangle(10.0, 20.0, 800, 40);
rect.setFill(javafx.scene.paint.Color.TRANSPARENT);
rect.setStroke(javafx.scene.paint.Color.RED);
AnchorPane anchor = new AnchorPane();
anchor.getChildren().add(rect);
GridPane grid = new GridPane();
grid.setHgap(0);
grid.setVgap(0);
grid.setPadding(new Insets(0, 0, 0, 0));
grid.add(anchor, 1, 0);
root.getChildren().add(grid);
ScrollPane scroll = new ScrollPane();
scroll.setHbarPolicy(ScrollBarPolicy.ALWAYS);
scroll.setVbarPolicy(ScrollBarPolicy.AS_NEEDED);
scroll.setContent(root);
setJs(scroll);
return new Scene(scroll, javafx.scene.paint.Color.WHITE);
}
private void createUI(final JFXPanel fxPanel)
{
Platform.runLater(new Runnable() {
#Override
public void run()
{
initFX(fxPanel);
}
});
}
public FxPanel1( JFXPanel fxPanel)
{
createUI(fxPanel);
}
}
Now the code for second fxPanel looks like ...
public class FxPanel2 extends JFXPanel
{
private ScrollPane scroll ;
public ScrollPane getJs() {
return scroll;
}
public void setJs(ScrollPane js) {
this.scroll = js;
}
private boolean initFX(JFXPanel fxPanel) {
Scene scene = createScene();
fxPanel.setScene(scene);
return true;
//craneAssignmentChartView.setFxPanel(fxPanel);
}
private Scene createScene() {
Group root = new Group();
Rectangle rect = new Rectangle(10.0, 180.0, 800, 40);
rect.setFill(javafx.scene.paint.Color.TRANSPARENT);
rect.setStroke(javafx.scene.paint.Color.RED);
AnchorPane anchor = new AnchorPane();
anchor.getChildren().add(rect);
GridPane grid = new GridPane();
grid.setHgap(0);
grid.setVgap(0);
grid.setPadding(new Insets(0, 0, 0, 0));
grid.add(anchor, 1, 0);
root.getChildren().add(grid);
ScrollPane scroll = new ScrollPane();
scroll.setHbarPolicy(ScrollBarPolicy.ALWAYS);
scroll.setVbarPolicy(ScrollBarPolicy.NEVER);
scroll.setContent(root);
setJs(scroll);
return new Scene(scroll, javafx.scene.paint.Color.WHITE);
}
private void createUI(final JFXPanel fxPanel)
{
Platform.runLater(new Runnable() {
#Override
public void run()
{
initFX(fxPanel);
}
});
}
public FxPanel2( JFXPanel fxPanel)
{
createUI(fxPanel);
}
}
The main class looks like ....
public class DemoToCheckUIAlignment extends JFrame
{
public static void main(String[] args)
{
final DemoToCheckUIAlignment demo = new DemoToCheckUIAlignment();
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
JFXPanel panel1 = new JFXPanel();
FxPanel1 fxObj1 = new FxPanel1(panel1);
JFXPanel panel2 = new JFXPanel();
FxPanel2 fxObj2 = new FxPanel2(panel2);
DemoToCheckUIAlignment frame = new DemoToCheckUIAlignment();
frame.setSize(800, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JSplitPane chartSplitPane = new JSplitPane();
chartSplitPane.setOrientation(JSplitPane.VERTICAL_SPLIT);
chartSplitPane.setDividerLocation(200);
chartSplitPane.setDividerSize(2);
chartSplitPane.setTopComponent(panel1);
chartSplitPane.setBottomComponent(panel2);
demo.provideScrollSyncBetweenFXPanels(fxObj1.getJs(), fxObj2.getJs());
frame.getContentPane().add(chartSplitPane);
//frame.getContentPane().add(panel2);
frame.setVisible(true);
}
});
}
public static void provideScrollSyncBetweenFXPanels(final ScrollPane upperSP, final ScrollPane lowerSP)
{
lowerSP.hvalueProperty().addListener(new ChangeListener<Number>()
{
public void changed(ObservableValue<? extends Number> ov,
Number old_val, Number new_val)
{
upperSP.hvalueProperty().set(new_val.doubleValue());
}
});
}
}
Now to check the problem follow the simple steps...
Ofcorse run the program...
Scroll the bottom Panel ....that is FxPanel2...
And maximized the window .... The x - position for the inner contents is changed now...
which does not happen with Swing....
Here are the screen shots where the problem reproduce for the attached MCVE....Please go through the images....
You may use setFitToWidth of the ScrollPane Object to match a particular dimension. For more details you may refer to the link http://docs.oracle.com/javafx/2/ui_controls/scrollpane.htm at down the page, Resizing Components in the Scroll Pane, you may find more on the solution
I'm unable to make a JavaFX MenuBar show as a standard OS X menu bar, at the top of the screen.
Here's what I've tried in my subclass of Application:
public void start(Stage primaryStage) throws Exception {
final Menu menu1 = new Menu("File");
final Menu menu2 = new Menu("Options");
final Menu menu3 = new Menu("Help");
MenuBar menuBar = new MenuBar();
menuBar.getMenus().addAll(menu1, menu2, menu3);
menuBar.setUseSystemMenuBar(true);
primaryStage.setTitle("Creating Menus with JavaFX 2.0");
final Group rootGroup = new Group();
final Scene scene = new Scene(rootGroup, 800, 400, Color.WHEAT);
rootGroup.getChildren().add(menuBar);
primaryStage.setScene(scene);
primaryStage.show();
}
I assumed that the use of
menuBar.setUseSystemMenuBar(true);
would do the trick, but actually it makes the menuBar disappear altogether.
I'm using Java 1.8.0-b132 on OS X 10.9
I've had success with this code:
MenuBar menuBar = new MenuBar();
final String os = System.getProperty("os.name");
if (os != null && os.startsWith("Mac"))
menuBar.useSystemMenuBarProperty().set(true);
BorderPane borderPane = new BorderPane();
borderPane.setTop(menuBar);
primaryStage.setScene(new Scene(borderPane));
It looks like OS X only displays the Menus if they have MenuItems inside them (which is a bit weird, as you can attach functionality to empty Menus).
I created a little project that gives you access to the auto-generated menu bar on OS X: NSMenuFX
Update: With the new pure JavaFX version, the API has slightly changed
It allows you to replace the default Mac OS menu bar items, so you can to something like this:
// Get the toolkit
MenuToolkit tk = MenuToolkit.toolkit();
// Create default application menu with app name "test"
Menu defaultApplicationMenu = tk.createDefaultApplicationMenu("test");
// Replace the autogenerated application menu
tk.setApplicationMenu(defaultApplicationMenu);
// Since we now have a reference to the menu, we can rename items
defaultApplicationMenu.getItems().get(1).setText("Hide all the otters");
You can of course also add new menu items as you do in your example above.
I just ran into this issue myself - I noticed that the system menubar wouldn't initially appear in OSX until I switched to another application and back.
Wrapping the setUseSystemMenuBar call in a runLater did the trick, so I unscientifically concluded there's more window setup required before OSX can successfully register an application menu.
Platform.runLater(() -> menuBar.setUseSystemMenuBar(true));
Credits to this tutorial that I have followed with success:
https://blog.codecentric.de/en/2015/04/tweaking-the-menu-bar-of-javafx-8-applications-on-os-x/
Below I paste the most important part to get an OS X menu bar compatible with Win classic menu bar:
#Override
public void start(Stage primaryStage) throws Exception {
MenuBar menuBar = new MenuBar();
menuBar.useSystemMenuBarProperty().set(true);
Menu menu = new Menu("java");
MenuItem item = new MenuItem("Test");
menu.getItems().add(item);
menuBar.getMenus().add(menu);
primaryStage.setScene(new Scene(new Pane(menuBar)));
primaryStage.show();
}
Building on dmolony with some corrections:
MenuBar menuBar = new MenuBar ();
if( System.getProperty("os.name","UNKNOWN").equals("Mac OS X")) {
menuBar.setUseSystemMenuBar(true);
}
BorderPane borderPane = new BorderPane ();
borderPane.setTop (menuBar);
primaryStage.setScene (new Scene (borderPane));
I try to set javafx HTMLEditor to get all free size on the container.
The next is the source code.
public class HtmlEditorTest extends Application {
#Override
public void start(Stage stage) {
stage.setTitle("HTMLEditor Sample");
stage.setWidth(400);
stage.setHeight(300);
final HTMLEditor htmlEditor = new HTMLEditor();
htmlEditor.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
MigPane migPane = new MigPane("fill, debug", "[fill]", "fill");
migPane.add(htmlEditor);
Scene scene = new Scene(migPane);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
If I'll replace HTMLEditor with TextArea I get the expected behaviour. You may see result here
setting htmlEditor.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE)
not solved the problem (based on this answer.
As you may see on the picture I use MigPane in debug mode. And actually the TextArea and HTMLEditor taking the whole container free space. However HTMLEditor text area and scroll bar don't take the free space within HTMLEditor.
How I may fix this problem?
The next addition solved this issue.
WebView webview = (WebView) editor.lookup("WebView");
GridPane.setHgrow(webview, Priority.ALWAYS);
GridPane.setVgrow(webview, Priority.ALWAYS);
I am currently experimenting with JavaFX's scene graph. I came across a strange problem that i can't really explain. Have a look at the following code:
final BorderPane bp1 = new BorderPane();
final Button button = new Button("CLICK ME");
Scene sc1 = new Scene(bp1,100,100);
bp1.setCenter(button);
stage1.setScene(sc1);
stage1.show();
Stage stage2 = new Stage();
final BorderPane bp2 = new BorderPane();
Scene sc2 = new Scene(bp2,100,100);
stage2.setScene(sc2);
stage2.setX(250);
stage2.show();
bp2.setCenter(button);
bp1.setCenter(button);
What i am trying to do here is to add a node (Button) to a Borderpane which lies within a scene on stage1. At the end of the code i try to add the node to a different scene(pane) on stage2. This actually works. But the last line does not. The button remains on stage2. The strange thing is that if i replace the borderpane with a gridpane, the code works as intended. Why does the borderpane behave different from the gridpane in this situation?
Another question which came to my mind in this case: I assume that there is exactly 1 scene graph per scene (or stage). Is that correct?
I guess you found a bug in the BorderPane implementation. The BorderPane has a bit of peculiar way how it manages its children. You can find the BorderPane implementation here. I suggest you file a bug report at the javafx jira
My testcase:
final BorderPane bp1 = new BorderPane();
final BorderPane bp2 = new BorderPane();
System.out.println("bp1 "+bp1);
System.out.println("bp2 "+bp2);
final Button button = new Button("CLICK ME");
button.parentProperty().addListener(new ChangeListener<Parent>() {
#Override
public void changed(ObservableValue<? extends Parent> observableValue, Parent parent, Parent parent2) {
System.out.println("changed");
System.out.println(button.getParent());
}
});
bp1.centerProperty().addListener(new InvalidationListener() {
#Override
public void invalidated(Observable observable) {
System.out.println("bp1 center invalidated ");
}
});
bp2.centerProperty().addListener(new InvalidationListener() {
#Override
public void invalidated(Observable observable) {
System.out.println("bp2 center invalidated ");
}
});
// bp1.centerProperty().addListener(new ChangeListener<Node>() {
// #Override
// public void changed(ObservableValue<? extends Node> observableValue, Node node, Node node2) {
// System.out.println("bp1 center changed "+node+" -> "+node2);
// }
// });
// bp2.centerProperty().addListener(new ChangeListener<Node>() {
// #Override
// public void changed(ObservableValue<? extends Node> observableValue, Node node, Node node2) {
// System.out.println("bp2 center changed "+node+" -> "+node2);
// }
// });
Scene sc1 = new Scene(bp1,100,100);
bp1.setCenter(button);
primaryStage.setScene(sc1);
primaryStage.show();
Stage stage2 = new Stage();
Scene sc2 = new Scene(bp2,100,100);
stage2.setScene(sc2);
stage2.setX(250);
stage2.show();
bp2.setCenter(button);
bp1.setCenter(button);
output:
bp1 BorderPane#48a80c67
bp2 BorderPane#10c66375
changed
BorderPane#48a80c67[styleClass=root]
bp1 center invalidated
changed
null
changed
BorderPane#10c66375[styleClass=root]
bp2 center invalidated
Explanation:
I found that bp1's center property is not invalidated and thus not updated when the button is added to the second scene. Adding a node to another scene should normally cause it to be removed from the previous scene. However, since BorderPane uses a peculiar way to hold its values (object properties for center, left and so on), after the button is added to the second scene, the button is not removed from the center property of the BorderPane. Setting the button a second time on the same BorderPane doesn't add the button to its children because it thinks that it is already set as the center node.
To your second question:
yes, only one scene graph per stage/scene.
I have quite a big button (minWidth and minHeight were explicitly set to big numbers), and inside that big button there is relatively small icon and some text. Icon and text do not consume all available space, and end up being placed in the center of the button.
I want to put icon and text to the left side of the button. But it seems that I do not understand what all those alignments mean, since setting alignment to BASELINE_LEFT or setting textAlignment to LEFT didn't change anything.
How can I fix it?
Property textAlignment controls alignment for multiline text so it wouldn't help you.
But both
btn.setStyle("-fx-alignment: LEFT;");
or
btn.setAlignment(Pos.BASELINE_LEFT);
should work for you. See example below.
public class ILoveBigButtonsAndICannotLie extends Application {
#Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("Button");
btn.setGraphic(new Rectangle(10,10, Color.RED));
btn.setMinHeight(200);
btn.setMinWidth(250);
//btn.setStyle("-fx-alignment: LEFT;");
btn.setAlignment(Pos.BASELINE_LEFT);
StackPane root = new StackPane();
root.getChildren().add(btn);
primaryStage.setScene(new Scene(root, 300, 250));
primaryStage.show();
}
public static void main(String[] args) { launch(); }
}