List selected Item property : ListView « JavaFX « Java

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Java » JavaFX » ListView 




List selected Item property
 

/*
 * Copyright (c) 2011, 2012 Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
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 * modification, are permitted provided that the following conditions
 * are met:
 *
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 *    notice, this list of conditions and the following disclaimer.
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.util.Callback;

public class Main extends Application {

  ListView<String> list = new ListView<String>();
  ObservableList<String> data = FXCollections.observableArrayList("chocolate",
      "salmon""gold""coral""darkorchid""darkgoldenrod""lightsalmon",
      "black""rosybrown""blue""blueviolet""brown");
  final Label label = new Label();

  @Override
  public void start(Stage stage) {
    VBox box = new VBox();
    Scene scene = new Scene(box, 200200);
    stage.setScene(scene);
    stage.setTitle("ListViewSample");
    box.getChildren().addAll(list, label);
    VBox.setVgrow(list, Priority.ALWAYS);

    label.setLayoutX(10);
    label.setLayoutY(115);
    label.setFont(Font.font("Verdana"20));

    list.setItems(data);

    list.setCellFactory(new Callback<ListView<String>, ListCell<String>>() {
      @Override
      public ListCell<String> call(ListView<String> list) {
        return new ColorRectCell();
      }
    });

    list.getSelectionModel().selectedItemProperty()
        .addListener(new ChangeListener<String>() {
          public void changed(ObservableValue<? extends String> ov,
              String old_val, String new_val) {
            label.setText(new_val);
            label.setTextFill(Color.web(new_val));
          }
        });
    stage.show();
  }

  static class ColorRectCell extends ListCell<String> {
    @Override
    public void updateItem(String item, boolean empty) {
      super.updateItem(item, empty);
      Rectangle rect = new Rectangle(10020);
      if (item != null) {
        rect.setFill(Color.web(""));
        setGraphic(rect);
      }
    }
  }

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

   
  














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