ListView auto filter : ListView « JavaFX « Java

1. Java
2. JavaFX
3. ListView

ListView auto filter

 

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {
  ObservableList<String> entries = FXCollections.observableArrayList();
  ListView list = new ListView();

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

  @Override
  public void start(Stage primaryStage) {
    primaryStage.setTitle("Simple Search");
    TextField txt = new TextField();
    txt.setPromptText("Search");
    txt.textProperty().addListener(new ChangeListener() {
      public void changed(ObservableValue observable, Object oldVal,
          Object newVal) {
        search((String) oldVal, (String) newVal);
      }
    });

    list.setMaxHeight(180);
    for (int i = 0; i < 100; i++) {
      entries.add("Item " + i);
    }
    entries.add("A");
    entries.add("B");
    entries.add("C");
    entries.add("D");
    list.setItems(entries);

    VBox root = new VBox();
    root.setPadding(new Insets(10, 10, 10, 10));
    root.setSpacing(2);
    root.getChildren().addAll(txt, list);
    primaryStage.setScene(new Scene(root, 300, 250));
    primaryStage.show();
  }

  public void search(String oldVal, String newVal) {
    if (oldVal != null && (newVal.length() < oldVal.length())) {
      list.setItems(entries);
    }
    String value = newVal.toUpperCase();
    ObservableList<String> subentries = FXCollections.observableArrayList();
    for (Object entry : list.getItems()) {
      boolean match = true;
      String entryText = (String) entry;
      if (!entryText.toUpperCase().contains(value)) {
        match = false;
        break;
      }
      if (match) {
        subentries.add(entryText);
      }
    }
    list.setItems(subentries);
  }
}

   
  

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