УП 7

src_Main.java

import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.RowConstraints;
import javafx.scene.text.Font;
import javafx.stage.Stage;

import java.awt.*;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * A sample that demonstrates various key events and their usage. Type in the
 * text box to view the triggered events: key pressed, key typed and key
 * released. Pressing the Shift, Ctrl, and Alt keys also trigger events.
 *
 * @see javafx.scene.input.KeyCode
 * @see javafx.scene.input.KeyEvent
 * @see javafx.event.EventHandler
 */
public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    private void init(Stage stage) {
        MyPane root = new MyPane();
        root.setPrefWidth(800);
        root.setPrefHeight(400);
        MyListView console = new MyListView();
        MyLabel lastKey = new MyLabel();
        lastKey.setFocusTraversable(true);
        lastKey.setFont(new Font("BodoniCameoC", 72));
        root.addObserver(console);
        root.addObserver(lastKey);
        root.setOnKeyPressed(root::notifyObservers);
        ColumnConstraints columnConstraints1 = new ColumnConstraints();
        columnConstraints1.setPercentWidth(80);
        columnConstraints1.setHalignment(HPos.CENTER);
        ColumnConstraints columnConstraints2 = new ColumnConstraints();
        columnConstraints2.setPercentWidth(20);
        RowConstraints rowConstraints = new RowConstraints();
        rowConstraints.setValignment(VPos.CENTER);
        rowConstraints.setPercentHeight(100);
        root.getColumnConstraints().addAll(columnConstraints1, columnConstraints2);
        root.getRowConstraints().addAll(rowConstraints);
        root.add(lastKey, 0, 0);
        root.add(console, 1, 0);
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.setTitle("Key Logger");
        try (FileInputStream icon = new FileInputStream("src\\logger.png")) {
            stage.getIcons().add(new Image(icon));
        } catch (IOException e) {
        }
        stage.sizeToScene();
    }

    @Override
    public void start(Stage primaryStage) {
        init(primaryStage);
        primaryStage.show();
    }
}

src_MyLabel.java

import javafx.scene.control.Label;
import javafx.scene.input.KeyEvent;

public class MyLabel extends Label implements Observer {
    @Override
    public void handle(KeyEvent k) {
        String text = MyUtils.getText(k).toUpperCase();
        setText(text);
    }
}

src_MyListView.java

import javafx.scene.control.ListView;
import javafx.scene.input.KeyEvent;

public class MyListView extends ListView<String> implements Observer {
    public MyListView() {
        this.setFocusTraversable(false);
    }

    @Override
    public void handle(KeyEvent k) {
        String text = MyUtils.getText(k);
        getItems().add("Key Pressed: " + text);
    }
}

src_MyPane.java

import javafx.scene.input.KeyEvent;
import javafx.scene.layout.GridPane;

import java.util.ArrayList;
import java.util.List;

public class MyPane extends GridPane implements Observable {
    private List<Observer> observers;

    public MyPane() {
        this.observers = new ArrayList<>();
    }

    @Override
    public void addObserver(Observer o) {
        observers.add(o);
    }

    @Override
    public void notifyObservers(KeyEvent k) {
        observers.forEach(o -> o.handle(k));
    }
}

src_MyUtils.java

import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;

public class MyUtils {
    public static String getText(KeyEvent ke) {
        KeyCode code = ke.getCode();
        if (code.equals(KeyCode.UNDEFINED)) {
            switch (ke.getText()) {
                case "Ж":
                case "ж": {
                    code = KeyCode.SEMICOLON;
                    break;
                }
                case "Э":
                case "э": {
                    code = KeyCode.QUOTE;
                    break;
                }
                case "Ё":
                case "ё": {
                    code = KeyCode.BACK_QUOTE;
                    break;
                }
                case "Б":
                case "б": {
                    code = KeyCode.COMMA;
                    break;
                }
                case "Ю":
                case "ю": {
                    code = KeyCode.PERIOD;
                    break;
                }
            }
        }
        return code.getName();
    }
}

src_Observable.java

import javafx.scene.input.KeyEvent;

public interface Observable {
    void addObserver(Observer o);

    void notifyObservers(KeyEvent k);
}

src_Observer.java

import javafx.scene.input.KeyEvent;

public interface Observer {
    void handle(KeyEvent k);
}