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package comboboxsample;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.util.Callback;
public class ComboBoxSample extends Application {
public static void main(String[] args) {
launch(args);
}
final Button button = new Button ("Send");
final Label notification = new Label ();
final TextField subject = new TextField("");
final TextArea text = new TextArea ("");
String address = " ";
@Override public void start(Stage stage) {
stage.setTitle("ComboBoxSample");
Scene scene = new Scene(new Group(), 450, 250);
final ComboBox emailComboBox = new ComboBox();
emailComboBox.getItems().addAll(
"jacob.smith@example.com",
"isabella.johnson@example.com",
"ethan.williams@example.com",
"emma.jones@example.com",
"michael.brown@example.com"
);
emailComboBox.setPromptText("Email address");
emailComboBox.setEditable(true);
emailComboBox.valueProperty().addListener(new ChangeListener<String>() {
@Override public void changed(ObservableValue ov, String t, String t1) {
address = t1;
}
});
final ComboBox priorityComboBox = new ComboBox();
priorityComboBox.getItems().addAll(
"Highest",
"High",
"Normal",
"Low",
"Lowest"
);
priorityComboBox.setValue("Normal");
priorityComboBox.setCellFactory(
new Callback<ListView<String>, ListCell<String>>() {
@Override public ListCell<String> call(ListView<String> param) {
final ListCell<String> cell = new ListCell<String>() {
{
super.setPrefWidth(100);
}
@Override public void updateItem(String item,
boolean empty) {
super.updateItem(item, empty);
if (item != null) {
setText(item);
if (item.contains("High")) {
setTextFill(Color.RED);
}
else if (item.contains("Low")){
setTextFill(Color.GREEN);
}
else {
setTextFill(Color.BLACK);
}
}
else {
setText(null);
}
}
};
return cell;
}
});
button.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
if (emailComboBox.getValue() != null &&
!emailComboBox.getValue().toString().isEmpty()){
notification.setText("Your message was successfully sent"
+ " to " + address);
emailComboBox.setValue(null);
if (priorityComboBox.getValue() != null &&
!priorityComboBox.getValue().toString().isEmpty()){
priorityComboBox.setValue(null);
}
subject.clear();
text.clear();
}
else {
notification.setText("You have not selected a recipient!");
}
}
});
GridPane grid = new GridPane();
grid.setVgap(4);
grid.setHgap(10);
grid.setPadding(new Insets(5, 5, 5, 5));
grid.add(new Label("To: "), 0, 0);
grid.add(emailComboBox, 1, 0);
grid.add(new Label("Priority: "), 2, 0);
grid.add(priorityComboBox, 3, 0);
grid.add(new Label("Subject: "), 0, 1);
grid.add(subject, 1, 1, 3, 1);
grid.add(text, 0, 2, 4, 1);
grid.add(button, 0, 3);
grid.add (notification, 1, 3, 3, 1);
Group root = (Group)scene.getRoot();
root.getChildren().add(grid);
stage.setScene(scene);
stage.show();
}
}