1 /* 2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.javafx.scene.control.skin; 27 28 import com.sun.javafx.scene.control.DoubleField; 29 import javafx.application.Platform; 30 import javafx.beans.InvalidationListener; 31 import javafx.scene.Node; 32 33 /** 34 */ 35 public class DoubleFieldSkin extends InputFieldSkin { 36 private InvalidationListener doubleFieldValueListener; 37 38 /** 39 * Create a new DoubleFieldSkin. 40 * @param control The DoubleField 41 */ 42 public DoubleFieldSkin(final DoubleField control) { 43 super(control); 44 45 // Whenever the value changes on the control, we need to update the text 46 // in the TextField. The only time this is not the case is when the update 47 // to the control happened as a result of an update in the text textField. 48 control.valueProperty().addListener(doubleFieldValueListener = observable -> { 49 updateText(); 50 }); 51 } 52 53 @Override public DoubleField getSkinnable() { 54 return (DoubleField) control; 55 } 56 57 @Override public Node getNode() { 58 return getTextField(); 59 } 60 61 /** 62 * Called by a Skinnable when the Skin is replaced on the Skinnable. This method 63 * allows a Skin to implement any logic necessary to clean up itself after 64 * the Skin is no longer needed. It may be used to release native resources. 65 * The methods {@link #getSkinnable()} and {@link #getNode()} 66 * should return null following a call to dispose. Calling dispose twice 67 * has no effect. 68 */ 69 @Override 70 public void dispose() { 71 ((DoubleField) control).valueProperty().removeListener(doubleFieldValueListener); 72 super.dispose(); 73 } 74 75 protected boolean accept(String text) { 76 if (text.length() == 0) return true; 77 if (text.matches("[0-9\\.]*")) { 78 try { 79 Double.parseDouble(text); 80 return true; 81 } catch (NumberFormatException ex) { } 82 } 83 return false; 84 } 85 86 protected void updateText() { 87 getTextField().setText("" + ((DoubleField) control).getValue()); 88 } 89 90 protected void updateValue() { 91 double value = ((DoubleField) control).getValue(); 92 double newValue; 93 String text = getTextField().getText() == null ? "" : getTextField().getText().trim(); 94 try { 95 newValue = Double.parseDouble(text); 96 if (newValue != value) { 97 ((DoubleField) control).setValue(newValue); 98 } 99 } catch (NumberFormatException ex) { 100 // Empty string most likely 101 ((DoubleField) control).setValue(0); 102 Platform.runLater(() -> { 103 getTextField().positionCaret(1); 104 }); 105 } 106 } 107 }