The JavaFX class hierarchy

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• Convert FXML (s) loading class hierarchy

  Hi all
  
  As I'm not sure of my observation is really the thread "so, really, how you are meant to use FXML to a real application. (So, really, how you are meant to use FXML to a real application? ) I prefer to open a new one.
  
  I develop in javaFX 2.0 experimentation (I want to say I do more in trying, so guessing based on extensive reading on theoretical /of course I read forums, but these treats questions mainly practices /) with FXML. FXML has several very attractive feature, promising bright future.
  
  I wonder, however, why does the FXMLLoader not simply copy the XML structure, create all the objects described and the making available of the main java class. Create the hierarchy of objects and make the 'main' root public. Just as will happen if we have defined the user interface by code. A single audience 'root' class that each additional item is connected (attached) of some sort (in a concrete path), each point can be referenced in a logical manner. One single root class would require only one controller, fx:id pourrait make it easy to reference a certain (deep) branch of the described class hierarchy structure of fxml directly.
  
  Why is required to assign to each fxml (root) a controller on its own?
  
  In my understanding in order to centralize the management of events in fact I need to define a separate controller for each (in my case nearly 20) of the fxml modules that simply passes events to the central eventhandler class raised. Is this good?
  
  The FXMLLoader is supposed to create the hierarchy of the objects anyway. Why is it not public?

  (1) I think that included (fx: include) fxmls need not necessarily a controller on their own, they can share one of their parents, children fxmls don't need to assign a controller to.

  This is normal. Includes many represent functional modules, as do classes. Using a controller by include, we support encapsulation, which is important from the point of view OOD.

  However, if you want to share includes controllers between and you use JavaFX 2.1, you could use a custom controller factory to return the same instance of controller for each document FXML in your hierarchy.

  I have not found the way to address (in order to change some properties):
  BorderPane.top.menubar.getItem ("File") .getItem (2) .backgroundcolor = gray or something like that) an object in the tree from the root only by its known position. Is it possible that (except fx:id) to designate a certain object?

  If you just want to set a style, you should probably use CSS classes to style. If indeed, you need get a reference to the element (for example, to call a method on it), you can use fx:id. ID values are automatically mapped to the fields in your controller, but you can also access their values via FXMLLoader #getNamespace () or #lookup (String) Node.

  Could you please give an example how (in the case of one KeyPressed event for example) the object that triggered the event can be identified.

  You can get the event source of the object passed to your event handler event:

  In your controller:

  @FXML
  protected void handleTxtPartnerKeyPressed(KeyEvent event) {
      TextField source = (TextField)event.getSource();
  
      ...
  }
  

• LVOOP: Common accessor for the child classes?

  I am reletively new to LVOOP and OBJECT oriented programming in general. I used very simple classes as a replacement for clusters several times, and now I have an architecture intended to convert most of my code into classes, dynamic distribution screw and similar.

  However, I run in to an issue, which basically boils down to laziness: I really don't want to do a lot of the same dynamic send screws I want to have a VI parent to be able to write a piece of data common to all children. Preference gives an error if the child does not have this data element.

  I guess it's quite similar to dynamic distribution, but without having to write a DD VI for each class.

  Is it possible to have the VI parent to access the data of the child? If so, how?

  Here is an example of my hierarchy:

  Test.lvclass (parent)

  DC_test.lvlcass (data: test number, 2D, time stampresults)

  Transfer_Curve_test.lvlcass (data: results of tests settings, 1 d, timestamp)

  Breakdown_test.lvlcass (data: test number, 3D, timestampresults)

  ... 28 another test

  As you can see, the data type only common between them is the timestamp. I want to be able to use a VI in the parent class to write data in the child class.

  You have it backwards autour.

  The data that is common belongs to the parent class, not the class of the child.

  Data that are not common may not be processed by the parent class and must be transformed by the child class.

  You don't need to CREATE truly dynamic shipping screws for a common data type.  If you just don't set the VI at all, it will be called the parent instance.

  Shane.

• Two quick questions (hopefully) - right way to dynamically change the CSS class and put of Splash screen implemented

  Couple of quick questions have left me speechless!

  So, it seems obvious that many JavaFX applications want to dynamically change the CSS styles.  Is the best way to do it through la.getStyleClass () .add ("classname") < node >?  The underlying data structure is a list of observable.  So let's say we have 5 styles that simply to change the fill color of a circle of 5 different colors, respectively.  So if I have a condition in which I want to dynamically apply 1 of these 5 styles, as I do now it's by setting all 5 styles as a string in a list by using a static initializer, then I call < node > .getStyleClass () .removeAll (list), then getStyleClass () .add ("classname").  I do this to avoid adding again and still the same style and inflate the underlying list.  What is the right way to manage dynamic CSS styles?

  Finally a very simple I think.  So I know there's a little differently to implement a splash screen.  My app has certainly got bigger in the last few months of development and I noticed there are about a 5 second delay between when I run the application when I see the main stage.  I was thinking what a splash screen would be nice to fill that time.  I had no time to prototype using a Preloader and I fear that using another, early stage start-up again would be too long of a delay.  "I actually thought that using the Nice and simple JVM argument" - splash: image name > "would be simple, easy and effective.  Unfortunately when I try to do, the splash screen appears but never goes away.  Anyone know what is happening with this?

  Your mechanism to manage the css style classes is a good approach; I've used several times. I wonder why the style classes have been implemented as a list, instead of a game, but there may be cases of good use for the use of a list.

  In some cases you can also consider using CSS PsuedoClasses, which were presented in JavaFX 8. Here is a little easier to use, especially if you have two options. But a use case might look like:

  public class Message {
      public enum Status { NORMAL, WARNING, CRITICAL }
  
      private final ObjectProperty status = new SimpleObjectProperty<>(Status.NORMAL);
      private final StringProperty message = new SimpleStringProperty();
  
      // constructor, getters, setters, and property accessors....
  }
  

  public Label createLabel(Message message) {
      PseudoClass warning = PseudoClass.getPseudoClass("warning");
      PseudoClass critical = PseudoClass.getPseudoClass("critical");
  
      Label label = new Label();
      label.textProperty().bind(message.messageProperty());
      message.statusProperty().addListener((obs, oldStatus, newStatus) -> {
          label.pseudoClassStateChanged(warning, newStatus == Message.Status.WARNING);
          label.pseudoClassStateChanged(critical, newStatus == Message.Status.CRITICAL);
      }
      return label ;
  }
  

  And then your css looks like

  .label:warning {
      -fx-text-fill: orange ;
  }
  .label:critical {
      -fx-text-fill: red ;
  }
  

• How to get the controller class of the a fxml file open in a tab?

  Hello.
  First of all, sorry for my bad inglish, that is not my language.
  
  Introduction:
  I work in the skeleton of an enterprisse application in javafx. Generally (in the past), I used swing with InternalFrames MDI form. Search in the web site on how can he do this, I found that the concept of the MDI form is obsolete, is recommended to use a tabpanel structure. I started to develop the application with this concept, but I have a question.
  
  Scenario:
  I have a main window with:
  -Menu: To access the different options
  -Toolbar: To run the day-to-day operations (open, save, edit, delete and print)
  -TabPanel: To display the dashboard and fxml files opened from the menu.
  -Status bar: To display information.
  
  [http://www.blueboxmicrosystems.com/fxml.png |] See the image]
  
  The problem:
  I don't know how to access the methods of the controller of the fxml file on the active tab.
  
  Note: I have an interface with operations (open, save, edit, delete and print) and the tools of the interface controllers.
  
  The question:
  How can I me the controller class of the file fxml in the active tab in order to call methods?
  
  Kind regards
  
  Published by: user10311523 on 31-mar-2013 20:36
  
  Published by: m_ilio on 01-Apr-2013 05:40

  Instead of

   Parent root =  FXMLLoader.load(getClass().getResource(fxmlFile));
  

  do

  FXMLLoader loader = new FXMLLoader(getClass().getResource(fxmlFile));
  Parent root = (Parent) loader.load();
  MyControllerType controller = loader.getController();
  // now you'll need to keep track of the controller somewhere, maybe a Map
  

  where of course you replace MyControllerType with classname of your controller.

• I do not understand what the function of the Pseudo-classes

  I do not understand what the function of the CSS Pseudo-classes 'top', 'right', 'bottom' and 'left' in a tab pane.
  
  Could someone explain to me? Can you give me an example?
  
  Another thing... How to center the tabs in a tab pane?
  
  In advance thank you very much to all

  I do not understand what the function of the CSS Pseudo-classes 'top', 'right', 'bottom' and 'left' in a tab pane.

  They are related to the side property.
  http://docs.Oracle.com/JavaFX/2/API/JavaFX/scene/control/TabPane.html#sideProperty
  The property side is where the tabs are placed with respect to the visible tab pane.

  If you do not use this property, you don't need to worry their about to much.
  The default value for the side is high, as the pseudo-class flaw that will be active.

  Another thing... How to center the tabs in a tab pane?

  Ask a separate question.

• ClassCastException in the custom class loader

  I created a custom class Leon.
  
  CCL ClassLoaderDemo = new ClassLoaderDemo(); assume that it works very well
  CLAS class = ccl.loadClass ('com '' ' MyObject');
  
  com MyObjectSuperClass o1 = (com. MyObjectSuperClass) clas.newInstance ();
  
  Now I want to get the object responsible for MyObjectSuperClass which is super class if MyObject. But I'm getting the following exception
  
  Exception in thread "main" java.lang.ClassCastException: com. Com cannot be cast to MyObject. MyObjectSuperClass
  
  Help, please.

  821458 wrote:
  My requirement is the class MyObject needs to be loaded by my client class loader. If you say that let the superclass (MyObjectSuperClass) be in the class path and let the class system charge charger, then usually it be a problem

  No, it's exactly what you want.

  MyObject loaded by the custom class loader, its super class loaded by the system class loader, I will be able to cast then.

  Yes, you will be able to cast to the upper class, then.

  It is not similar to the statement "MyObject loaded by the class loader and custom class system are different and we cannot throw.

  No, it isn't. your confusion is due to the fact that you don't seem to understand that you can have a class hierarchy that spans the Chargers of classes. This should be obvious because each object hierarchy extends eventually object, which is always in the system class loader. Therefore, you can always convert any instance of any class loader "Object". in the same way, you can have MyObjectClass in your chargers personalized classes and MyObjectSuperClass in the system class loader. You can instantiate an instance of MyObjectClass to aid reflection on your custom class loaders and assign it to a reference of the type MyObjectSuperClass. This is how pretty much any plugin system is implemented (the API is in the 'main' class loader and the implementation is in a nested class or custom ClassLoader).

• How can I keep only one instance of the javafx application at the same time?

  Hello
  How can I keep only one instance of the javafx application at the same time?
  Let not the user run the javafx application is running on your PC.

  Hello. This program does what you want. You can probably find a better solution.

  import javafx.application.Application;
  import javafx.event.ActionEvent;
  import javafx.event.EventHandler;
  import javafx.scene.Scene;
  import javafx.scene.control.Button;
  import javafx.scene.layout.StackPane;
  import javafx.stage.Stage;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileReader;
  import java.io.FileNotFoundException;
  import java.io.*;
  import java.nio.channels.FileLock;
  import javafx.application.Platform;
  import javafx.stage.WindowEvent;
  
  public class Simpleapp extends Application {
  
      public static void main(String[] args) {
  
          launch(args);
      }
  
      @Override
      public void start(Stage primaryStage) throws Exception {
  
          final File file = new File("flag");
          final RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw");
          final FileLock fileLock = randomAccessFile.getChannel().tryLock();
  
          System.out.print(fileLock == null);
          if (fileLock == null) {
              Platform.exit();
          }
  
          primaryStage.setTitle("Hello World!");
          Button btn = new Button();
          btn.setText("Say 'Hello World'");
  
          StackPane root = new StackPane();
          root.getChildren().add(btn);
          primaryStage.setScene(new Scene(root, 300, 250));
  
          primaryStage.setOnCloseRequest(new EventHandler() {
  
              @Override
              public void handle(WindowEvent arg0) {
                  try {
                      fileLock.release();
                      randomAccessFile.close();
                      System.out.println("Closing");
                  } catch (Exception ex) {
                      System.out.print(ex.getMessage());
                  }
  
              }
          });
  
          primaryStage.show();
      }
  }
  

• How to build the javafx with maven project

  Hi I have a simple example where I want to get a screen of javafx. I want to build using maven... I have the following code, does anyone have any ideas how to get this configured?
  
  App.Java - contains my main class and run the javafx code
  
  Import javafx.application.Application;
  Import javafx.scene.Scene;
  Import javafx.stage.Stage;
  
  /**
  * Hello World!
  *
  */
  public class App
  {
  Public Shared Sub main (String [] args)
  {
  System.out.println ("Hello World!");
  Application.Launch (ApplicationToLaunchJavaFX.class, null);
  }
  }
  
  ApplicationToLaunchJavaFX - the stage to display (javafx code)
  
  SerializableAttribute public class ApplicationToLaunchJavaFX extends Application
  {
  
  @Override
  public void start (steps) riser Exception {}
  stage.setTitle ("Helllllllooooo");
  internship. Show();
  }
  
  }
  
  POM. XML
  
  < project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance".
  xsi: schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >
  < > 4.0.0 modelVersion < / modelVersion >
  
  < groupId > com A < / groupId >
  mavenproject1hellowworld < artifactId > < / artifactId >
  < version > 1.0 - SNAPSHOT < / version >
  jar of < package > < / packaging >
  
  < name > mavenproject1hellowworld < / name >
  < url > http://maven.apache.org < URL >
  
  Properties of <>
  < project.build.sourceEncoding > < /project.build.sourceEncoding > UTF-8
  < / properties >
  
  < dependency >
  < dependency >
  JUnit < groupId > < / groupId >
  JUnit < artifactId > < / artifactId >
  < version > 3.8.1 < / version >
  < range > test < / scope >
  < / dependence >
  
  < dependency >
  com.Oracle < groupId > < / groupId >
  JavaFX < artifactId > < / artifactId >
  < version > 2.0 < / version >
  < scope > system < / scope >
  < systemPath > C:\Program Files\Oracle\JavaFX 2.0 SDK/rt/lib/jfxrt.jar < / systemPath >
  < / dependence >
  
  < / dependencies >
  < / project >

  This pom has managed to create a click to run jar for me.
  http://code.Google.com/p/Willow-browser/source/browse/Pom.XML

• final in the inner class

  I am trying to manually do a drawing similar to this program
  http://JavaFX.com/samples/draw/
  
  However, I'm running in final questions and internal classes.
  
  "size of a local variable is accessible from the inner class; must be declared final.
  
  He wants me to do either in SIZE or full size. However, once final, I can't change the variable.
  
  I have often used the variable in a loop for to assign a value (although perhaps it was a bad practice?) but I don't know the best way to handle this.
  
  Any suggestions?
  Thank you!
  
  
  

  int SIZE = 1; //somewhere else
  ...
          for( int size = 0 ; size < 5 ; size++){
                Circle circle = new Circle(D/Padding);
                
                circle.setOnMousePressed(new EventHandler<MouseEvent>(){
                    public void handle(MouseEvent me){
                        SIZE = size;
                    }
                }
           );

  Edit:
  I'm well aware that's not necessarily something specific to javafx, but more a general java programming failure.
  I also know that the mouseadapter is an anonymous class and can only access the final.
  
  I'm just looking for some suggestions on how to better fit this.
  
  Published by: namrog on July 5, 2011 10:51
  
  Published by: namrog on July 5, 2011 10:59

  int SIZE = 1; //somewhere else
  ...
          for( int size = 0 ; size < 5 ; size++){
                final int size1 = size;
                Circle circle = new Circle(D/Padding);
  
                circle.setOnMousePressed(new EventHandler(){
                    public void handle(MouseEvent me){
                        SIZE = size1;
                    }
                }
           );
  

  And Yes, it is a question of Java, not specific to JavaFX.
  http://Java.Sun.com/docs/books/JLS/third_edition/HTML/classes.html#247496

  DB

• Error "Failed to initialize the raid class" on Equium A100

  Hello peeps

  I seem to have a problem re install the Vista 32 bit product supplied with my A100 - 02L recovery disk. I get a message "unable to initialize the raid class."

  Any ideas of what the problem may be Pls?

  Hi Bfab,

  When you get this error message exactly? You see that at the end of the installation during installation or recovery?

  I used the disk recovery from my laptop, very often, but never had a problem with it. It s still works correctly.
  If recovery disk doesn't work, it could be a malfunction of the equipment.

  Have you tested a normal disc of Microsoft Vista too?

• Watch does not recognize the weight class as exercise-how can you add the duration of activity manually because none of the presets eg elliptical etc. is appropriate. Also does not count calories for example 35 when the rest of the group is around 500

  Look does not recognize the weight class as exercise-how can you add the duration of activity manually because none of the presets etc for example elliptical is appropriate and therefore do not count toward the daily goal. Also does not count calories for example 35 when the average of the others in the group is around 500.

  Hello

  When you use the application of the training session, choose the type of activity that best fits your business. For anything else - like weight - select the other category.

  During the follow-up of one year to the next helps:

  • Activity app will credit the ring of progress of exercise with one minute for every minute of the workout.
  • Active calories will be based on the data recorded by the heart rate sensor or a brisk walk, whichever is greater.

  Note, however, that the heart rate sensor is likely to give better results for the workouts that involve rhythmic (for example running) rather than the irregular movements.

  More information:

  Use of the workout on your Apple Watch - Apple Support

• With the help of the child in the executable class

  I'm kinda stuck and don't know how to solve and could not find a solution online.

  I have a parent class and its children to the class. The child class only overrides a method, but not the run method. I want to compile the executable project, where the run method is called, but the class type is the child, not parent. How to do this?

  I tried three things, but all in vain:

  (1) in the build properties when I select start VI the run method of the parent, I get in the executable the parent, not the child's class class. It's logical. However, I couldn't find the option to use the child as a type's class.

  (2) when I add the run method of the child class and appeal to parents, I get two windows pop up. The run of the parent and the child method. Too many. Even if for the class child run method (see below the block diagram of a child, red run method's parent), I put not to show the façade when it is called in the properties of VI.

  

  (3) when I tried with a separate VI calling the run method of the parent class, but the class type is the child, I get the façade of this separate VI and the run method of the parent. See below (Blue class is child, red of parent).

  

  In both cases 2 and 3, I chose to put the checkbox 'See the façade when it is called' a FAKE, but still the front panels appear.

  Someone don't know either: i) the use in the executable version of the options to generate an executable when a different class method is used, or ii) when you compile an executable file with a certain start VI, to not show this starting VI?

  I understand if I say "you want to configure the RUN method of the class as 'start-up VI' in the EXE file, but it should run the RUN method for a child object"?

  If this is correct, your third approach is the right one. This new boot VI is often used as 'Splash Screen' that covers the task of a demon "spawning" for your application.

  You must simply close this VI once it's over. This can be done using VI server on its own front panel functions.

  hope this helps,

  Norbert

• Substitution of the class, how to create the child class and then the base class

  I started to write a program for a DMM smart, that the problem is all versions of DMM greet the change company communication.

  My idea is to write a child class for each version, DMM and each Subvi child will replace the Subvi base class.

  My problem is, I first want to create a child class and after I see everything is working, start creating the base class. in this way, I'll see if think the right way.

  My question is

  How can I create a child class and then create the base class and configure the Subvi class of the child to be the substitution of the base class?

  I tried searching in the property of the class, but I don't see anything.

  Thank you

  This can be done and I did on occasion.

  You create the base class with the methods of dynamic distribution, you need (Connector components must be identical to those of the class of the child).

  Set then the legacy of the class inherits this base class.  If your method is defined as a dynamic distribution method in the parent, you will probably now have some errors (unless your method of child was already DD, in which case you might be OK already).

  To change the inheritance of a class, right-click on the properties of the class in your project, and then select Properties.  According to me, the tree of estate is at the lower end of the property.  Click on the 'legacy of change' (or something similar) to choose the class from which you now want to inherit.

• Summary of functions (two entries) for classes of brother with a dynamic distribution of entry: the static entry retains the type of the parent class.

  Suppose that in a hypothetical example, I have a superclass (number) with two children (real and complex) classes.

  I would define a function of sum for these classes, using dynamic distribution.

  Real or complex would have its own method of the sum (VI) which would be subject to various operations, such as the real and complex numbers are different.

  As I understand it, the normal way to proceed in OOP is for each of these methods to have an entry of dynamic distribution and a static entry of its own type.

  Problem: Labview doesn't let me do this!

  I first define an input method dynamic-shipping dummy for the numberof the parent class, but only the first entry can be dynamic-Envoy while the other is statically typed as number.

  Then, when I create override methods in my two children classes real and complex, the second entry (static) remains under the number (the type of the parent class). This is not fair, because then I can't access the private data of the child class of type real or complex that will be connected to the second input (static).

  What is the solution to this problem (usually)?

  I think that, in LVOOP, you use only a dynamic terminal or a static terminal to the terminal object.

  You can have several other terminals, but all the dynamics VI (methods with the same name) must have the same API (terminals).

  If you have to understand your preferred mode to pass, use multiple terminals, not used by each method, or use a cluster that contains all the numbers to pass (real or complex, both of which are not used in each method) or you can try a Variant, as shown.