JavaFX 2.0 :: Dynamically Change CSS Class And Splash Screen Implementation

Jan 12, 2015

So it seems to reason that many JavaFX applications will want to dynamically change CSS styles.  Is the best way to do this via the <node>.getStyleClass().add("classname")?  The underlying data structure is an observable list.  So lets say one has 5 styles that simply change the fill color of a circle to 5 different colors respectively.  So if I have a condition in which I want to dynamically apply 1 of these 5 styles, the way I currently do this is by defining all 5 styles as strings in a list using a static initializer, then I call <node>.getStyleClass().removeAll(list), then getStyleClass().add("classname").  I do this to avoid adding the same style over and over and inflating the underlying list.  Is this the correct way to manage dynamic CSS styles?
 
So I know there is a few different way to implement a splash screen.  My app has definitely gotten larger over the last few months of development and I have noticed there is about a 5 second delay between when I run the application to when I see the main stage.  I was thinking a splash screen would be nice to fill this time period.  I have not had time to prototype using a Preloader and I fear that using an alternate, lightweight stage on startup would still take too long of a delay.  I was actually thinking that using the nice and simple JVM argument "-splash:<image name>" would be simple, easy and effective.  Unfortunately when I try to do this, the splash screen comes up but never goes away. 

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Make A Splash Screen It Didn't Work

May 10, 2014

I tried to make a splash screen it didn't work.Here is the error message: Exception in thread "main" java.lang.Error: Unresolved compilation problems:

JSplash cannot be resolved to a type
JSplash cannot be resolved to a type

at com.mime.splashscreen.SplashScreen.main(SplashScre en.java:8)

The code is:

package com.mime.splashscreen;
public class SplashScreen {
private static final String Color = null;
public static void main(String[] args) {
JSplash splash=new JSplash(SplashScreen.class.getResource("splash.png"), true, true, false, "V1",
null, java.awt.Color.RED, java.awt.Color.BLACK);
}
}

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Cardlayout Format - Change Main Menu Screen Into Game Screen On Button Click

Mar 16, 2015

I'm making a game of checkers for my A2 Computing coursework which is due in within a week. I have completely finished the game, and only thing I have left to do is connect the two JPanels together via a CardLayout that I have made. However I am unsure how to do so

Here is the code from my CardLayout:

import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JButton;

[Code] ....

I have kept the code I am displaying to a minimal, hence I have removed all the action listeners for my buttons, anyway the problem I have is that, I would like it so that when the user clicks on the 'Multiplayer' button which is the array button ourButtons[1], it will then transition into my main game screen so that the user can then play a game of checkers.

Here is the main important GUI from my CheckerBoard class:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
  public class CheckerBoard extends JPanel implements ActionListener, MouseListener {
// Main routine that opens an Applet that shows a CheckerBoard
public static void main(String[] args) {
new CLayout();
 
[Code] ....

Once again kept to a minimal.

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JavaFX 2.0 :: Create Implementation Of Service Class That Runs On Particular Time Everyday

Jun 23, 2014

I tried using ScheduledService but  the delay and period fields accepts a Duration object. I want the Service to run at exactly 6.00 pm everyday.

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JSF :: How To Change Rows Attribute Of InputTextarea Dynamically

Feb 13, 2014

i have a field that varies from 10 to 3000 VARCHAR in DB. A field called IDTEXT in a database that can be even a single word or up to a max of 3000. I want to display that in a form. Based on its size i want to very the size of the <h:inputTextarea>. How can i do it..will i be able to set row property from bean?

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JavaFX 2.0 :: How To Dynamically Set Height Of Text Area

Jul 9, 2014

I have a requirement where in the content of the text area is dynamically populated from the database. I am able to successfully retrieve and display the data on the text area.
 
However when the content is too large, I am not able to dynamically set the height of the text area. When I try to display the same as a label, the display is flawless, dynamically sets the height as per the content. So, I tried to create a label, with same content and dynamically bind the height to the preferred height as below, but it doesn't work.
 
               // Generate User Note Description
                TextArea textArea = new TextArea();
                Label text = new Label();
             
               // SETTING THE TEXT TO A LABEL TO RETRIEVE THE HEIGHT
               text.setText(usrNotes.getNote().trim());
               
[Code] ....

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JavaFX 2.0 :: How To Dynamically Load Image Into TableView When Its Row / Cell Becomes Visible

Jan 24, 2015

I am building an application that shows tables with large amounts of data containing columns that should display a thumbnail. However, this thumbnail is supposed to be loaded in the background lazily, when a row becomes visible because it is computationally too expensive to to this when the model data is loaded and typically not necessary to retrieve the thumbnail for all data that is in the table.
 
I have done the exact same thing in the past in a Swing application by doing this:
 
Whenever the model has changed or the vertical scrollbar has moved:

- Render a placeholder image in the custom cell renderer for this JTable if no image is available in the model object representing the corresponding row
- Compute the visible rows by using getVisibleRect and rowAtPoint methods in JTable
- Start a background thread that retrieves the image for the given rows and sets the resulting BufferedImage in a custom Model Object that was used in the TableModel (if not already there because of an earlier run)
- Fire a corresponding model change event in the EDT whenever an image has been retrieved in the background thread so the row is rendered again
 
Btw. the field in the model class holding the BufferedImage was a weak reference in this case so the memory can be reclaimed as needed by the application.
 
What is the best way to achieve this behaviour using a JFX TableView? I have so far failed to find anything in the API to retrieve the visible items/rows. Is there a completely different approach available/required that uses the Cell API? I fail to see it so far.

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JavaFX :: Implementation Of Web Data Into Non-web Java Application

Aug 4, 2014

What would be the most effective method to display data grabbed from a web source that is queried every second, for example the most recent EUR/USD price?

I already have access to the data stream, and I've built a simple FXML in javaFX that contains a grid; I'm not sure how to approach putting the live ticking data into the grid so it continues to update as the price changes, for example.

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JavaFX 2.0 :: Custom ComboBox Implementation Not Recognized By Scene Builder 2.0

Jun 3, 2015

I did an implementation which is an extension of javafx.scene.control.ComboBox

Inside I imported the Class ComboBoxListViewSkin

import com.sun.javafx.scene.control.skin.ComboBoxListViewSkin;
 
I think this might be the reason as this comboBox is not recognized at the import to the scene builder library. I can show up the import dialog of custom controls, but my custom ComboBox is not showing up. All other implementations are there correctly as they are loaded from my customControl.jar file
 
I use the ComboBoxListViewSkin for the functionality to scroll to an item in the combo as a user types a letter on the keyboard.

I do this by:

/**
     * This method scrolls the itemView of the items to the first item starting
     * with the given char or string
     *
     * @param pressedKey
     */
    public void scrollToChar(String pressedKey) {
        String value = pressedKey.toUpperCase(); 
        for (Object userEntry : getItems()) {

[Code] ....
 
I really need to show up my custom Combo in the scenebuilder, as otherwise the rest of my fxml is not editable in sceneBuilder 2.0 ....

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JavaFX 2.0 :: Scene Implementation With ScrollPane - Dynamic Node Scaling

Apr 23, 2015

I'm trying to implement a scene with a ScrollPane in which the user can drag a node around and scale it dynamically. I have the dragging and scaling with the mouse wheel working as well as a reset zoom.
 
Here's my issue:

     I'm having trouble with the calculations to fit the node to the width of the parent.
     If I zoom in or out, the fit to width does not work.
     If I change the window size after running fitWidth() once, the fit to width does not work the second time.
 
Here is my code as an SSCCE and how it works...

1. (works) Mouse wheel will zoom in and out around the mouse pointer
2. (works) Left or right mouse press to drag the rectangle around
3. (works) Left double-click to reset the zoom
4. (doesn't work) Right double-click to fit the width
 
My calculations to re-position the rectangle to the upper left of the pane and fit it (i.e. scale it up or down) to the width of the parent are incorrect.
 
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.beans.property.DoubleProperty;

[Code] ....

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Implementing Methods - Draws Ovals Or Rectangles On Screen And Can Change Fill / Outline Color Of Shape

Oct 5, 2014

The following class is part of a homework assignment:

package event;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import model.Model;
import shapes.Rectangle;
import shapes.Shape;

[Code] .....

I have to implement the methods for what is happening if on some panel the action selected are Remove/Move/Change/Resize (Draw is already implemented).

The Applet in question draws ovals or rectangles on the screen and you can change the fill-color and outline-color of the shape. All this works already. I have dabbled with the move-method, but am not going anywhere.

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JavaFX 2.0 :: Access Screen From The Web?

May 16, 2014

how to access my rrmLogin from the web?
 
With JSP can do? How do it? or exist other way? or: [URL] ....
 
I tested (i need some configuration): [URL] .... but this method download the jar file (and other libraries) right? and the program act same as a Desktop app, right?

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JavaFX 2.0 :: How To Add Screen Builder To Eclipse 4.2.2

May 29, 2015

I want to include JavaFX in my Eclipse IDE.  I found intructions on how to import JavaFX Screen Builder into Eclipse 4.4 but my version is 4.2.2
 
I noticed that JavaFX is included into Java JDK now, I have installed Java JDK 8_45
 
The info on the oracle java pages is telling me i have to install JavaFX Screen Builder 2 before installing the plugin.
 
So, how to i proceed ???
 
I tried to inport e(fx)clipse plugin 1.2 and 0.9 but both refuses to install.  Messages received as follows:
 
Cannot complete the install because one or more required items could not be found.

  Software being installed: e(fx)clipse - IDE - FXML 1.2.0.201501301049 (org.eclipse.fx.ide.fxml.feature.feature.group 1.2.0.201501301049)
  Missing requirement: JavaFX Preview 1.2.0.201501301049 (org.eclipse.fx.ide.ui.preview 1.2.0.201501301049) requires 'bundle com.google.inject 2.0.0' but it could not be found
  Cannot satisfy dependency:
    From: e(fx)clipse - IDE - FXML 1.2.0.201501301049 (org.eclipse.fx.ide.fxml.feature.feature.group 1.2.0.201501301049)
    To: org.eclipse.fx.ide.ui.preview [1.2.0.201501301049]

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JavaFX 2.0 :: Blank White Screen While Starting App?

Jun 24, 2015

This screen appears for a second and after this, it shows up normal app screen. How I can solve this issue? When I open app: after this

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JavaFX 2.0 :: How To Reload Screen When Changing Languages

Mar 19, 2015

I'm beginner with javaFX and i need to change language of the screen. but how to reload the screen when the language was changed. The application have a button where have the language available. I want just refresh screen when the user change language. Here is the start method to show the stage.

    @Override
    public void start(Stage stage) throws Exception
    {
        this.stage = stage;
        Locale locale = Locale.getDefault();
        ResourceBundle rb = ResourceBundle.getBundle("resources/Label",locale);

[Code] .....

Here is the function to change the language(in the same class with start function),the rb is the new ResourceBundle:

    public void refresh(ResourceBundle rb)
    {
          //change the language here
     }
  
1. I don't want to use the resourceBundle to get value in resource file and set label in scene one by one.like following:

this.btnLabel.setText(rb.getString(key.test));
...
 
2. I don't want to reload the scene,like following:

    public void refresh(ResourceBundle rb)
    {
         try
        {
            loader = new FXMLLoader(getClass().getResource("FXMLDocument.fxml"),rb);
            root = (Parent)loader.load();

[Code] .....
 
So do we have a solution to just set the resourceBundle and reload the scene easier?

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JavaFX 2.0 :: Scene Builder On High DPI Screen

Jun 6, 2015

I'm trying to follow the Scene Builder tutorials on a 3200 X 1800 screen which makes the size of the content pane 3'' x 2" ....

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Why Class Implementation Is Not Possible In Java

May 14, 2014

Why Class implementation is not possible in java....

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JavaFX 2.0 :: HTMLEditor - Default Size / Cannot Fill Full Screen

May 10, 2015

The code:
 
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.BorderPane;

[Code] ....
 
run (when window height > 700px ) :
 
HTMLEditor  default height is 670px, the other area (green color) is not filled,why?
 
HTMLEditor   高度总是670px, 怎么把HTMLEditor 填充满窗口?
 
这是一个bug吗?

is it bug?

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JavaFX 2.0 :: How To Create Off Screen Images By Canvas In Multi-thread Environment

Feb 25, 2015

I want to create off-screen images by Canvases in multi-thread environment.
 
I know that I use methods of GraphicsContext2D to draw on Canvas. Can I do this on Canvas which is not added to Scene ?
 
How can I get an image from a canvas after I invoke GraphicsContext2D methods? Can I get images in multi-thread environment ?

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Finding Class In Java For Implementation Of Graph Theory?

Nov 15, 2014

I want to use graphs in java. Is there any class in java for implementation of graph theory? I most create a graph and run DFS(Depth First Search) algorithm on that.

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Change Position Objects In JavaFX

Jun 4, 2014

I can't recolate and align the button, the circle or the line where i want it to on the canvas. I want to be able to move the line where i want it, now it seems like all objects are stuck in the middle of the scene or canvas.

package application;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;

[Code] ....

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JavaFX 2.0 :: Only One Change Event On ObservableList?

Apr 9, 2015

I have a list of Row objects and want to listen to changes in the name property of a Row object.
 
public class Row implements Serializable {
    private final SimpleStringProperty name = new SimpleStringProperty(this, "name", "");
    public Row() {
        this("");
    }
    public Row(String name) {
        this.name.set(name);

[Code] ....
 
I would expect to be notified 4 times. Line 23: Added, Line25, 26, 27: Update

But there are only 2 change events. For Line 26 and 27 there is no change event.

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JavaFX 2.0 :: Unable To Change Textfield Value

Jun 8, 2014

I am having a small JavaFX program where I try to set a value to TextField. Below is the part of FXML file and highlighted is the Textfield ....

fxml file  
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="185.0" prefWidth="598.0">
          <children>
            <TextField fx:id="actiontarget" editable="true" layoutX="146.0" layoutY="73.0" prefWidth="198.0" text="" />
           
[Code] ...
 
I want to display a string value to that text field.

So, I am using that fxid (actiontarget)

But actiontarget.setText (pathofFile) is not working .
 
Nothing displays and no value sets for the Text field.
 
How can I set value in that text field through above code.

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JavaFX 2.0 :: TreeTable Can't Change Title

Mar 16, 2015

I change TreeTableColumn.text but I got a Exception
 
Exception in thread "JavaFX Application Thread" java.lang.ClassCastException:
javafx.scene.control.TreeTableColumn cannot be cast to javafx.scene.control.TableColumn
    at com.sun.javafx.scene.control.skin.TableHeaderRow$10.invalidated(TableHeaderRow.java:277)

so I check TableHeaderRow . I find this method
 
private final InvalidationListener columnTextListener = new InvalidationListener() {
        @Override public void invalidated(Observable observable) {
            TableColumn<?,?> column = (TableColumn<?,?>) ((StringProperty)observable).getBean();
            CheckMenuItem menuItem = columnMenuItems.get(column);
            if (menuItem != null) {
                menuItem.setText(getText(column.getText(), column));
            }
        }
    };

why don't they use this

TableColumnBase<?,?> column = (TableColumnBase<?,?>) ((StringProperty)observable).getBean();

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JavaFX 2.0 :: Override A Theme To Change Colors

Jul 2, 2014

We have developed a theme called default.css that is extending of the default caspian.css. What we want to do is offer users the ability to override values from default.css to change colors etc. How can that be done?

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JavaFX 2.0 :: How To Listen To Change In CheckBox In TableView

Dec 28, 2014

I created two CheckBox in 2 tableColumn and I want to listen theire change. I tried

col_orien.setOnEditCommit

But it doesn't work (col_orien is the name of the tablecolumn that contain the check box)

Here is my code :

     col_orien.setOnEditCommit(new EventHandler<CellEditEvent<Information,Boolean>>() {
       @Override
       public void handle(CellEditEvent<Information, Boolean> event) {
         System.out.println("Edit commit");
       }
     });

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