1 /******************************************************************************* 2 * Copyright (c) 2011 Google, Inc. 3 * All rights reserved. This program and the accompanying materials 4 * are made available under the terms of the Eclipse Public License v1.0 5 * which accompanies this distribution, and is available at 6 * http://www.eclipse.org/legal/epl-v10.html 7 * 8 * Contributors: 9 * Google, Inc. - initial API and implementation 10 *******************************************************************************/ 11 package org.eclipse.wb.internal.core.model.property.editor; 12 13 import org.eclipse.swt.graphics.GC; 14 import org.eclipse.swt.graphics.Image; 15 import org.eclipse.swt.graphics.Point; 16 import org.eclipse.wb.internal.core.DesignerPlugin; 17 import org.eclipse.wb.internal.core.model.property.Property; 18 import org.eclipse.wb.internal.core.model.property.table.PropertyTable; 19 import org.eclipse.wb.internal.core.utils.ui.DrawUtils; 20 21 /** 22 * The {@link PropertyEditor} for <code>boolean</code>. 23 * 24 * @author scheglov_ke 25 * @coverage core.model.property.editor 26 */ 27 public final class BooleanPropertyEditor extends PropertyEditor { 28 private static final Image m_trueImage = DesignerPlugin.getImage("properties/true.png"); 29 private static final Image m_falseImage = DesignerPlugin.getImage("properties/false.png"); 30 private static final Image m_unknownImage = 31 DesignerPlugin.getImage("properties/BooleanUnknown.png"); 32 //////////////////////////////////////////////////////////////////////////// 33 // 34 // Instance 35 // 36 //////////////////////////////////////////////////////////////////////////// 37 public static final PropertyEditor INSTANCE = new BooleanPropertyEditor(); 38 39 private BooleanPropertyEditor() { 40 } 41 42 //////////////////////////////////////////////////////////////////////////// 43 // 44 // Presentation 45 // 46 //////////////////////////////////////////////////////////////////////////// 47 @Override 48 public void paint(Property property, GC gc, int x, int y, int width, int height) throws Exception { 49 Object value = property.getValue(); 50 if (value instanceof Boolean) { 51 boolean booleanValue = ((Boolean) value).booleanValue(); 52 Image image = booleanValue ? m_trueImage : m_falseImage; 53 String text = Boolean.toString(booleanValue); 54 paint(gc, x, y, width, height, image, text); 55 } else { 56 paint(gc, x, y, width, height, m_unknownImage, "unknown"); 57 } 58 } 59 60 /** 61 * Paints {@link Image} and text. 62 */ 63 private void paint(GC gc, int x, int y, int width, int height, Image image, String text) { 64 // draw image 65 { 66 DrawUtils.drawImageCV(gc, image, x, y, height); 67 // prepare new position/width 68 int imageWidth = image.getBounds().width + 2; 69 x += imageWidth; 70 width -= imageWidth; 71 } 72 // draw text 73 DrawUtils.drawStringCV(gc, text, x, y, width, height); 74 } 75 76 //////////////////////////////////////////////////////////////////////////// 77 // 78 // Editing 79 // 80 //////////////////////////////////////////////////////////////////////////// 81 @Override 82 public boolean activate(PropertyTable propertyTable, Property property, Point location) 83 throws Exception { 84 // check that user clicked on image 85 if (location == null || location.x < m_trueImage.getBounds().width + 2) { 86 invertValue(property); 87 } 88 // don't activate 89 return false; 90 } 91 92 @Override 93 public void doubleClick(Property property, Point location) throws Exception { 94 invertValue(property); 95 } 96 97 /** 98 * Inverts the value of given boolean {@link Property}. 99 */ 100 private void invertValue(Property property) throws Exception { 101 // prepare current boolean value 102 boolean booleanValue = false; 103 { 104 Object value = property.getValue(); 105 if (value instanceof Boolean) { 106 booleanValue = ((Boolean) value).booleanValue(); 107 } 108 } 109 // set inverted value 110 property.setValue(!booleanValue); 111 } 112 }
