ensemble.samples.controls.text.textvalidator.TextValidatorApp Maven / Gradle / Ivy
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package ensemble.samples.controls.text.textvalidator;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
/**
* A sample that demonstrates text validation. If the value in the TextField is
* a small number, the field becomes yellow. If the value in the TextField is
* not a number, the field becomes red.
*
* @sampleName Text Validator
* @preview preview.png
* @see javafx.scene.control.TextField
* @related /Controls/Text/Text Field
*/
public class TextValidatorApp extends Application {
public Parent createContent() {
String validatorCss = TextValidatorApp.class.getResource("Validators.css").toExternalForm();
TextField dateField = new TextField();
dateField.setPromptText("Enter a Large Number");
dateField.setMaxHeight(TextField.USE_PREF_SIZE);
TextInputValidatorPane pane = new TextInputValidatorPane();
pane.setContent(dateField);
pane.setValidator((TextField control) -> {
try {
String text = control.getText();
if (text == null || text.trim().equals("")) {
return null;
}
double d = Double.parseDouble(text);
if (d < 1000) {
return new ValidationResult("Should be > 1000", ValidationResult.Type.WARNING);
}
return null; // succeeded
} catch (Exception e) {
// failed
return new ValidationResult("Bad number", ValidationResult.Type.ERROR);
}
});
StackPane rootSP = new StackPane();
rootSP.setPadding(new Insets(12));
rootSP.getChildren().add(pane);
pane.getStylesheets().add(validatorCss);
return rootSP;
}
@Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setScene(new Scene(createContent()));
primaryStage.show();
}
/**
* Java main for when running without JavaFX launcher
* @param args command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}