CodeEditorExample.java

package net.thirdy.blackmarket.samples;
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.Label;
import javafx.scene.layout.HBoxBuilder;
import javafx.scene.layout.VBox;
import javafx.scene.layout.VBoxBuilder;
import javafx.stage.Stage;

/**
 * An example application which demonstrates use of a
 * CodeMirror based JavaScript CodeEditor wrapped in
 * a JavaFX WebView.
 */
public class CodeEditorExample extends Application {
  // some sample code to be edited.
  static final private String editingCode =
    "import javafx.application.Application;\n" +
    "import javafx.scene.Scene;\n" +
    "import javafx.scene.web.WebView;\n" +
    "import javafx.stage.Stage;\n" +
    "\n" +
    "/** Sample code editing application wrapping an editor in a WebView. */\n" +
    "public class CodeEditorExample extends Application {\n" +
    "  public static void main(String[] args) { launch(args); }\n" +
    "  @Override public void start(Stage stage) throws Exception {\n" +
    "    WebView webView = new WebView();\n" +
    "    webView.getEngine().load(\"http://codemirror.net/mode/groovy/index.html\");\n" +
    "    final Scene scene = new Scene(webView);\n" +
    "    webView.prefWidthProperty().bind(scene.widthProperty());\n" +
    "    webView.prefHeightProperty().bind(scene.heightProperty());\n" +
    "    stage.setScene(scene);\n" +
    "    stage.show();\n" +
    "  }\n" +
    "}";

  public static void main(String[] args) { launch(args); }
  @Override public void start(Stage stage) throws Exception {
    // create the editing controls.
    Label title = new Label("Editing: CodeEditor.java");
    title.setStyle("-fx-font-size: 20;");
    final Label labeledCode = new Label(editingCode);
    final CodeEditor editor = new CodeEditor(editingCode);
    final Button revertEdits = new Button("Revert edits");
    revertEdits.setOnAction(new EventHandler<ActionEvent>() {
      @Override public void handle(ActionEvent actionEvent) {
        editor.revertEdits();
      }
    });
    final Button copyCode = new Button(
      "Take a snapshot from the editor and set a revert point"
    );
    copyCode.setOnAction(new EventHandler<ActionEvent>() {
      @Override public void handle(ActionEvent actionEvent) {
        labeledCode.setText(editor.getCodeAndSnapshot());
        System.out.println(editor.getCodeAndSnapshot());
      }
    });

    // layout the scene.
    final VBox layout = VBoxBuilder.create().spacing(10).children(
      title,
      editor,
      HBoxBuilder.create().spacing(10).children(copyCode, revertEdits).build(),
      labeledCode
    ).build();
    layout.setStyle("-fx-background-color: cornsilk; -fx-padding: 10;");

    // display the scene.
    final Scene scene = new Scene(layout);
    stage.setScene(scene);
    stage.show();
  }
}