Java tutorial
/* * This file is part of OpenSpaceBox. * Copyright (C) 2018 by Maik Becker <hi@maik.codes> * * OpenSpaceBox is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * OpenSpaceBox is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with OpenSpaceBox. If not, see <http://www.gnu.org/licenses/>. */ package de.cubicvoxel.workspacefx.field; import de.cubicvoxel.workspacefx.data.IsField; import javafx.scene.control.TextField; import org.apache.commons.lang3.StringUtils; import java.util.Collection; /** * A {@link TextField} which only allows {@link Double}s. * * @author Maik Becker {@literal <hi@maik.codes>} */ public class FloatField extends TextField implements IsField<Double> { private Double floatValue = null; public FloatField() { textProperty().addListener(((observable, oldValue, newValue) -> { if (StringUtils.isEmpty(newValue)) { floatValue = null; } else { try { floatValue = Double.parseDouble(newValue); } catch (NumberFormatException e) { setText(oldValue); floatValue = Double.parseDouble(oldValue); } } })); } public Double getFloatValue() { return floatValue; } public void setFloatValue(Double value) { this.floatValue = value; if (value == null) setText(""); else setText(String.valueOf(value)); } @Override public void setValue(Double value) { setFloatValue(value); } @Override public Double getValue() { return getFloatValue(); } @Override public void showInvalid(Collection<String> message) { setTooltip(new FailedValidationTooltip(message)); } @Override public void resetInvalid() { setTooltip(null); } }