001/* SynthStyle.java -- A set of style properties 002 Copyright (C) 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.swing.plaf.synth; 040 041import gnu.classpath.NotImplementedException; 042 043import java.awt.Color; 044import java.awt.Font; 045import java.awt.Insets; 046 047import javax.swing.Icon; 048 049/** 050 * A set of style properties that can be installed on a component. 051 * 052 * @author Roman Kennke (kennke@aicas.com) 053 * 054 * @since 1.5 055 */ 056public abstract class SynthStyle 057{ 058 059 /** 060 * Creates a new <code>SynthStyle</code> object. 061 */ 062 public SynthStyle() 063 throws NotImplementedException 064 { 065 // FIXME: Implement this correctly. 066 } 067 068 public SynthGraphicsUtils getGraphicsUtils(SynthContext ctx) 069 throws NotImplementedException 070 { 071 // FIXME: Implement this correctly. 072 return null; 073 } 074 075 public Color getColor(SynthContext ctx, ColorType type) 076 throws NotImplementedException 077 { 078 // FIXME: Implement this correctly. 079 return null; 080 } 081 082 protected abstract Color getColorForState(SynthContext ctx, ColorType type); 083 084 public Font getFont(SynthContext ctx) 085 throws NotImplementedException 086 { 087 // FIXME: Implement this correctly. 088 return null; 089 } 090 091 protected abstract Font getFontForState(SynthContext ctx); 092 093 public Insets getInsets(SynthContext ctx, Insets result) 094 throws NotImplementedException 095 { 096 // FIXME: Implement this correctly. 097 return null; 098 } 099 100 public SynthPainter getPainter(SynthContext ctx) 101 throws NotImplementedException 102 { 103 // FIXME: Implement this correctly. 104 return null; 105 } 106 107 public boolean isOpaque(SynthContext ctx) 108 throws NotImplementedException 109 { 110 // FIXME: Implement this correctly. 111 return true; 112 } 113 114 public Object get(SynthContext ctx, Object key) 115 throws NotImplementedException 116 { 117 // FIXME: Implement this correctly. 118 return null; 119 } 120 121 public void installDefaults(SynthContext ctx) 122 throws NotImplementedException 123 { 124 // FIXME: Implement this correctly. 125 } 126 127 public void uninstallDefaults(SynthContext ctx) 128 throws NotImplementedException 129 { 130 // FIXME: Implement this correctly. 131 } 132 133 /** 134 * A convenience method to fetch an integer property. 135 * If the property's value is a {@link Number}, then the 136 * integer value is returned. Otherwise, the default value 137 * is returned. 138 * @param ctx the context 139 * @param key the key to fetch 140 * @param defaultValue the default value 141 * @return the integer value of the property, or the default value 142 */ 143 public int getInt(SynthContext ctx, Object key, int defaultValue) 144 { 145 Object obj = get(ctx, key); 146 if (obj instanceof Number) 147 return ((Number) obj).intValue(); 148 return defaultValue; 149 } 150 151 /** 152 * A convenience method to fetch an integer property. 153 * If the property's value is a {@link Boolean}, then the 154 * value is returned. Otherwise, the default value 155 * is returned. 156 * @param ctx the context 157 * @param key the key to fetch 158 * @param defaultValue the default value 159 * @return the boolean value of the property, or the default value 160 */ 161 public boolean getBoolean(SynthContext ctx, Object key, 162 boolean defaultValue) 163 { 164 Object obj = get(ctx, key); 165 if (obj instanceof Boolean) 166 return ((Boolean) obj).booleanValue(); 167 return defaultValue; 168 } 169 170 /** 171 * A convenience method to fetch an Icon-valued property. 172 * If the property's value is an {@link Icon}, then the 173 * value is returned. Otherwise, null is returned. 174 * @param ctx the context 175 * @param key the key to fetch 176 * @return the icon, or null 177 */ 178 public Icon getIcon(SynthContext ctx, Object key) 179 { 180 Object obj = get(ctx, key); 181 if (key instanceof Icon) 182 return (Icon) obj; 183 return null; 184 } 185 186 /** 187 * A convenience method to fetch a String property. 188 * If the property's value is a {@link String}, then the 189 * value is returned. Otherwise, the default value 190 * is returned. 191 * @param ctx the context 192 * @param key the key to fetch 193 * @param defaultValue the default value 194 * @return the String value of the property, or the default value 195 */ 196 public String getString(SynthContext ctx, Object key, String defaultValue) 197 { 198 Object obj = get(ctx, key); 199 if (obj instanceof String) 200 return (String) obj; 201 return defaultValue; 202 } 203}