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FX-Text-Area for formatted text and other special effects.

There is a newer version: 1.11


package org.fxmisc.richtext.demo;

import javafx.application.Application;
import javafx.css.PseudoClass;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

import org.fxmisc.flowless.VirtualizedScrollPane;
import org.fxmisc.richtext.CodeArea;

/**
 * Name: Editor4JavaSync
 * Description: .
 * 
 * Comment: ...
 * 
 * Copyright: Copyright (c) 2016-2019
 * Company: >StA-Soft<
 * @author StA
 * @version 1.0
 */

public class Editor4JavaSync extends Application
{

  /**
   * Beispiel-Text.
   */

  private static final String SAMPLE_CODE = String.join("\n", new String[]{
    "package com.example;",
    "",
    "import java.util.*;",
    "",
    "public class Foo extends Bar implements Baz {",
    "",
    "    /*",
    "     * multi-line comment",
    "     */",
    "    public static void main(String[] args) {",
    "        // single-line comment",
    "        for(String arg: args) {",
    "            if(arg.length() != 0)",
    "                MLogger.inf(arg);",
    "            else",
    "                MLogger.wrn(\"Warning: empty string as argument\");",
    "        }",
    "    }",
    "",
    "}"
  });

  /**
   * Main-Methode.
   * @param args Kommandozeilenparameter
   */

  public static void main(String[] args)
  {
    launch(args);
  }

  @Override
  public void start(Stage primaryStage)
  {
    CodeArea codeArea = new TextArea4Java(true);
    codeArea.replaceText(SAMPLE_CODE);

    VirtualizedScrollPane vpane = new VirtualizedScrollPane<>(codeArea);
    final PseudoClass FOCUSED = PseudoClass.getPseudoClass("focused");
    codeArea.focusedProperty().addListener((obs, oldVal, newVal) ->
    {
      vpane.pseudoClassStateChanged(FOCUSED, newVal);
    });
    StackPane sp = new StackPane(vpane);
    sp.setPadding(new Insets(10));

    Scene scene = new Scene(sp, 600, 400);
    scene.getStylesheets().add(getClass().getResource("editors.css").toExternalForm());
    primaryStage.setScene(scene);
    primaryStage.setTitle("Java Editor Demo");
    primaryStage.show();
  }

}