1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Eclipse Public License, Version 1.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.eclipse.org/org/documents/epl-v10.php 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.ide.eclipse.adt.internal.editors.layout.properties; 18 19 import static com.android.SdkConstants.VALUE_FALSE; 20 import static com.android.SdkConstants.VALUE_TRUE; 21 22 import org.eclipse.swt.graphics.GC; 23 import org.eclipse.swt.graphics.Image; 24 import org.eclipse.swt.graphics.Point; 25 import org.eclipse.wb.internal.core.DesignerPlugin; 26 import org.eclipse.wb.internal.core.model.property.Property; 27 import org.eclipse.wb.internal.core.model.property.table.PropertyTable; 28 import org.eclipse.wb.internal.core.utils.ui.DrawUtils; 29 30 /** 31 * Handle an XML property which represents booleans. 32 * 33 * Similar to the WindowBuilder PropertyEditor, but operates on Strings rather 34 * than Booleans (which means it is a tri-state boolean: true, false, not set) 35 */ 36 public class BooleanXmlPropertyEditor extends XmlPropertyEditor { 37 public static final BooleanXmlPropertyEditor INSTANCE = new BooleanXmlPropertyEditor(); 38 39 private static final Image mTrueImage = DesignerPlugin.getImage("properties/true.png"); 40 private static final Image mFalseImage = DesignerPlugin.getImage("properties/false.png"); 41 private static final Image mNullImage = 42 DesignerPlugin.getImage("properties/BooleanNull.png"); 43 private static final Image mUnknownImage = 44 DesignerPlugin.getImage("properties/BooleanUnknown.png"); 45 BooleanXmlPropertyEditor()46 private BooleanXmlPropertyEditor() { 47 } 48 49 @Override paint(Property property, GC gc, int x, int y, int width, int height)50 public void paint(Property property, GC gc, int x, int y, int width, int height) 51 throws Exception { 52 Object value = property.getValue(); 53 assert value == null || value instanceof String; 54 if (value == null || value instanceof String) { 55 String text = (String) value; 56 Image image; 57 if (VALUE_TRUE.equals(text)) { 58 image = mTrueImage; 59 } else if (VALUE_FALSE.equals(text)) { 60 image = mFalseImage; 61 } else if (text == null) { 62 image = mNullImage; 63 } else { 64 // Probably something like a reference, e.g. @boolean/foo 65 image = mUnknownImage; 66 } 67 68 // draw image 69 DrawUtils.drawImageCV(gc, image, x, y, height); 70 71 // prepare new position/width 72 int imageWidth = image.getBounds().width + 2; 73 width -= imageWidth; 74 75 // draw text 76 if (text != null) { 77 x += imageWidth; 78 DrawUtils.drawStringCV(gc, text, x, y, width, height); 79 } 80 } 81 } 82 83 @Override activate(PropertyTable propertyTable, Property property, Point location)84 public boolean activate(PropertyTable propertyTable, Property property, Point location) 85 throws Exception { 86 // check that user clicked on image 87 if (location == null || location.x < mTrueImage.getBounds().width + 2) { 88 cycleValue(property); 89 } 90 // don't activate 91 return false; 92 } 93 94 @Override doubleClick(Property property, Point location)95 public void doubleClick(Property property, Point location) throws Exception { 96 cycleValue(property); 97 } 98 99 /** 100 * Cycles through the values 101 */ cycleValue(Property property)102 private void cycleValue(Property property) throws Exception { 103 Object value = property.getValue(); 104 if (value == null || value instanceof String) { 105 // Cycle null => true => false => null 106 String text = (String) value; 107 if (VALUE_TRUE.equals(text)) { 108 property.setValue(VALUE_FALSE); 109 } else if (VALUE_FALSE.equals(text)) { 110 property.setValue(null); 111 } else { 112 property.setValue(VALUE_TRUE); 113 } 114 } else { 115 assert false; 116 } 117 } 118 } 119
