Newbie question. I'm trying to make a javafx to do list class but i need to add a button and textfield to insert data to the listview. I want to add these but I can't add them directly to the listview. I dunno how to do it.
package learning;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
public class ToDoList extends Application{
private ObservableList<String> doList = FXCollections.observableArrayList();
private String text="";
public void start(Stage primaryStage){
primaryStage.setTitle("2DoList");
TextField userTextField = new TextField();
Button enter=new Button("Add");
enter.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent e) {
text= userTextField.getText();
doList.add(text);
userTextField.setText("");
text="";
}
});
ListView<String> root=new ListView<String>(doList);
Scene scene=new Scene(root,250,500);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Related
I'm using NetBeans last version and macOS. I try this is my code and JOptionPane.showMessageDialog not working. It's working if I put the syntax in the main. Please tell me why. I try vscode, and I have same problem
import javax.swing.*;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Label;
import javafx.scene.control.RadioButton;
import javafx.scene.control.TextField;
import javafx.scene.control.TextInputDialog;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class App extends Application {
TextField txt;
public void start(Stage primaryStage) {
Label lb1 = new Label();
TextField txt = new TextField("Type here");
RadioButton rb1 = new RadioButton();
RadioButton rb2 = new RadioButton();
Button bt = new Button("click");
Button bt1 = new Button("anas aljaghbeer");
MyHandlerClass handler1 = new MyHandlerClass();
bt.setOnAction(handler1);
txt.setPrefSize(10, 10);
lb1.setText("Enter here");
txt.getText();
VBox box = new VBox();
Scene scene = new Scene(box, 1000, 1000);
box.getChildren().addAll(lb1, txt, bt);
primaryStage.setTitle("anas");
primaryStage.setScene(scene);
primaryStage.show();
}
class MyHandlerClass implements EventHandler<ActionEvent> {
#Override
public void handle(ActionEvent e) {
JOptionPane.showMessageDialog(null, " Hello");
}
}
public static void main(String[] args) {
Application.launch(args);
}
}
JOptionPane.showMessageDialog()…It's working if I put the syntax in the main. Please tell me why.
When you invoke JOptionPane.showMessageDialog() in main(), it executes on the initial thread. In a Swing program, you would invoke it from main() like this:
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
JOptionPane.showMessageDialog(null, "Click to continue…");
…
});
}
In a JavaFX program you are well advised not to "mix Swing and JavaFX," unless you account for JavaFX-Swing Interoperability. Instead, evoke an Alert as shown here and below:
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class App extends Application {
TextField txt;
#Override
public void start(Stage primaryStage) {
Label label = new Label();
TextField text = new TextField("Type here");
Button button = new Button("Click");
MyHandlerClass handler = new MyHandlerClass();
button.setOnAction(handler);
text.setPrefSize(10, 10);
label.setText("Enter here");
text.getText();
VBox box = new VBox();
box.getChildren().addAll(label, text, button);
Scene scene = new Scene(box, 320, 240);
primaryStage.setScene(scene);
primaryStage.setTitle("anas");
primaryStage.show();
}
class MyHandlerClass implements EventHandler<ActionEvent> {
#Override
public void handle(ActionEvent e) {
Alert alert = new Alert(Alert.AlertType.INFORMATION, "You clicked the button.");
alert.showAndWait();
}
}
public static void main(String[] args) {
Application.launch(args);
}
}
look at this simple app :
Press ctrl+space on the text field the listView appear with the focus and you can select with Arrow key. but if you move the mouse over the listView the customMenuItem got the hover highlight and the listview loose focus the Arrow key doesn't work anymore
How can i keep focus on the listview ??
import java.util.ArrayList;
import java.util.List;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.geometry.Side;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.CustomMenuItem;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) {
try {
HBox root = new HBox(new SuggestionTextFiedl());
Scene scene = new Scene(root, 400, 400);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
public class SuggestionTextFiedl extends TextField {
ListView<String> lv = new ListView<>();
CustomMenuItem lvContainer = new CustomMenuItem(lv);
ContextMenu contextMenu = new ContextMenu(lvContainer);
public SuggestionTextFiedl() {
super();
List<String> content = new ArrayList<>();
content.add("item1");
content.add("item2");
content.add("item3");
content.add("item1");
content.add("item2");
content.add("item3");
lv.setItems(FXCollections.observableList(content));
lv.setPrefWidth(100);
lv.setPrefHeight(100);
this.addEventHandler(KeyEvent.KEY_RELEASED, e -> {
if (e.getCode().equals(KeyCode.SPACE) && e.isControlDown()) {
System.out.println("ici");
contextMenu.show(SuggestionTextFiedl.this, Side.BOTTOM, 0, 0);
lv.requestFocus();
}
});
}
}
}
My solution not sure that is the right way
contextMenu.addEventFilter(MouseEvent.MOUSE_ENTERED_TARGET, e -> {
e.consume();
});
I am trying to make a to do list javafx class and I'm using a list view to do it but I want to set the contents of the list view with an array list I made. SO basically that once I open the program you get a text field and button to add items to the arraylist which is the listview. Anyway I could replace the arraylist with the listview and just directly add the items to that? I'm a newbie programmer by the way.
package learning;
import java.util.ArrayList;
import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
public class ToDoList extends Application{
private ArrayList<String> doList=new ArrayList<>();
private String text="";
public void start(Stage primaryStage){
primaryStage.setTitle("2DoList");
TextField userTextField = new TextField();
Button enter=new Button("Add");
enter.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent e) {
text= userTextField.getText();
doList.add(text);
userTextField.setText("");
text="";
}
});
ListView<String> root=new ListView<String>((ObservableList) doList);
Scene scene=new Scene(root,250,500);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Create an ObservableList instead of an ArrayList:
private ObservableList<String> doList = FXCollections.observableArrayList();
and then you can do
ListView<String> root=new ListView<String>(doList);
I'm trying to make a "launcher" with javafx.
This is my code :
I'm not shure you have to read all of this code, this code is here.
I'm trying to put a javaFX "play" button (i know how to make a button and how to set up an onclick event but i don't know where to add it :/)
Have you got an idea ? Thx.
package fr.whiteplay.main.launcher;
public class Launcher{
private static WebViewSample launcher;
private static String[] a;
public static void main(String[] args){
launcher = new WebViewSample();
a = args;
}
public static void start(){
launcher.go(a);
}
}
package fr.whiteplay.main.launcher;
import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
public class WebViewSample extends Application{
private Browser browser;
private Scene scene;
public void start(Stage stage){
// create the scene
stage.setTitle("WhitePlay");
browser = new Browser();
scene = new Scene(browser, 992, 620, Color.web("#000000"));
stage.setScene(scene);
stage.show();
}
public static void go(String[] args){
launch(args);
}
}
package fr.whiteplay.main.launcher;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.Node;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.Region;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
class Browser extends Region{
final WebView browser = new WebView();
final WebEngine webEngine = browser.getEngine();
public Browser(){
getStyleClass().add("browser");
webEngine.load("http://www.whiteplay.fr/launcher/index.html");
getChildren().add(browser);
}
private Node createSpacer(){
Region spacer = new Region();
HBox.setHgrow(spacer, Priority.ALWAYS);
return spacer;
}
protected void layoutChildren(){
layoutInArea(browser, 0, 0, getWidth(), getHeight(), 0, HPos.CENTER, VPos.CENTER);
}
}
Instead of the browser itself, the scene root must be a structured panel, which contains the browser, the button, and whatever else.
The simplest example is to replace your WebViewSample.start() method with the following:
public void start(Stage stage){
// create the scene
stage.setTitle("WhitePlay");
browser = new Browser();
BorderPane root = new BorderPane();
root.setCenter(browser);
Button button = new Button("Play");
root.setBottom(button);
button.setOnAction(a -> System.out.println("Play"));
scene = new Scene(root, 992, 620, Color.web("#000000"));
stage.setScene(scene);
stage.show();
}
Check this page for further reference on various layouts options, and how to work with them.
I have a TextArea that doesn't scroll down when I add text in it. I thought using this answer, but my TextArea is connected to a StringProperty like this :
consoleTextArea.textProperty().bind(textRecu);
So the answer doesn't work for me, is there another way to make my TextArea scroll down every time I update it by the binding?
Here is fast demo of what i meant in comment about adding listener to the textRecu. Yep consoleTextArea.textProperty() can't be changed because of a binding. But textRecu has no binding => can be changed and we can add listener to it.
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
private StringProperty textRecu = new SimpleStringProperty();
private TextArea consoleTextArea = new TextArea();
#Override
public void start(Stage primaryStage) throws Exception{
VBox root = new VBox();
Button button = new Button("Add some text");
button.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
//here you change textRecu and not consoleTextArea.textProperty()
textRecu.setValue(textRecu.getValue() +"New Line\n");
}
});
root.getChildren().addAll(consoleTextArea, button);
consoleTextArea.textProperty().bind(textRecu);
//here you also add listener to the textRecu
textRecu.addListener(new ChangeListener<Object>() {
#Override
public void changed(ObservableValue<?> observable, Object oldValue,
Object newValue) {
// from stackoverflow.com/a/30264399/1032167
// for some reason setScrollTop will not scroll properly
//consoleTextArea.setScrollTop(Double.MAX_VALUE);
consoleTextArea.selectPositionCaret(consoleTextArea.getLength());
consoleTextArea.deselect();
}
});
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}