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14 package org.wings.plaf;
15
16 import org.apache.commons.logging.Log;
17 import org.apache.commons.logging.LogFactory;
18 import org.wings.Resource;
19 import org.wings.SDimension;
20 import org.wings.SIcon;
21 import org.wings.SResourceIcon;
22 import org.wings.resource.ClasspathResource;
23 import org.wings.style.CSSAttributeSet;
24 import org.wings.style.CSSStyleSheet;
25 import org.wings.style.StyleSheet;
26 import org.wings.style.CSSProperty;
27
28 import java.awt.*;
29 import java.io.InputStream  ;
30 import java.io.Serializable ;
31 import java.lang.reflect.Constructor ;
32 import java.util.*;
33
34
41 public class LookAndFeel implements Serializable {
42 private final transient static Log log = LogFactory.getLog(LookAndFeel.class);
43
44 private static Map wrappers = new HashMap();
45 static {
46 wrappers.put(Boolean.TYPE, Boolean .class);
47 wrappers.put(Character.TYPE, Character .class);
48 wrappers.put(Byte.TYPE, Byte .class);
49 wrappers.put(Short.TYPE, Short .class);
50 wrappers.put(Integer.TYPE, Integer .class);
51 wrappers.put(Long.TYPE, Long .class);
52 wrappers.put(Float.TYPE, Float .class);
53 wrappers.put(Double.TYPE, Double .class);
54 }
55
56 protected Properties properties;
57
58 private static final Map finalResources = Collections.synchronizedMap(new HashMap());
59
60
65 public LookAndFeel(Properties properties) {
66 this.properties = properties;
67 }
68
69
73 public String getName() {
74 return properties.getProperty("lookandfeel.name");
75 }
76
77
81 public String getDescription() {
82 return properties.getProperty("lookandfeel.description");
83 }
84
85
94 public CGDefaults createDefaults() {
95 return new ResourceFactory();
96 }
97
98
104 public static Object makeCG(String className) {
105 Object result = finalResources.get(className);
106 if (result == null) {
107 try {
108 Class cgClass = Class.forName(className, true, Thread.currentThread().getContextClassLoader());
109 result = cgClass.newInstance();
110 finalResources.put(className, result);
111 } catch (Exception ex) {
112 log.fatal(null, ex);
113 }
114 }
115 return result;
116 }
117
118
123 public static Color makeColor(String colorString) {
124 if (colorString != null) {
125 try {
126 return Color.decode(colorString.trim());
127 } catch (Exception ex) {
128 ex.printStackTrace();
129 return null;
130 }
131 }
132 return null;
133 }
134
135
140 public static SDimension makeDimension(String dimensionString) {
141 if (dimensionString != null) {
142 int commaIndex = dimensionString.indexOf(',');
143 if (commaIndex > 0) {
144 return new SDimension(dimensionString.substring(0, commaIndex),
145 dimensionString.substring(commaIndex + 1));
146 }
147 }
148 return null;
149 }
150
151
159 public static SIcon makeIcon(String fileName) {
160 SIcon result = (SIcon) finalResources.get(fileName);
161 if (result == null) {
162 result = new SResourceIcon(fileName);
163 finalResources.put(fileName, result);
164 }
165 return result;
166 }
167
168
174 public static CSSAttributeSet makeAttributeSet(String string) {
175 CSSAttributeSet attributes = new CSSAttributeSet();
176 StringTokenizer tokens = new StringTokenizer(string, ";");
177 while (tokens.hasMoreTokens()) {
178 String token = tokens.nextToken();
179 int pos = token.indexOf(":");
180 if (pos >= 0) {
181 attributes.put(new CSSProperty(token.substring(0, pos)), token.substring(pos + 1));
182 }
183 }
184 return attributes;
185 }
186
187
193 public static Resource makeResource(String resourceName) {
194 Resource result = (Resource) finalResources.get(resourceName);
195 if (result == null) {
196 result = new ClasspathResource(resourceName);
197 finalResources.put(resourceName, result);
198 }
199 return result;
200 }
201
202
207 public static StyleSheet makeStyleSheet(String resourceName) {
208 try {
209 CSSStyleSheet result = new CSSStyleSheet();
210 InputStream in = LookAndFeel.class.getClassLoader().getResourceAsStream(resourceName);
211 result.read(in);
212 in.close();
213 return result;
214 } catch (Exception e) {
215 log.warn("Exception", e);
216 }
217 return null;
218 }
219
220
228 public static Object makeObject(String value, Class clazz) {
229 Object result;
230 try {
231 if (value.startsWith("new ")) {
232 int bracket = value.indexOf("(");
233 String name = value.substring("new ".length(), bracket);
234 clazz = Class.forName(name, true, Thread.currentThread().getContextClassLoader());
235 result = clazz.newInstance();
236 } else {
237 if (clazz.isPrimitive())
238 clazz = (Class ) wrappers.get(clazz);
239 Constructor constructor = clazz.getConstructor(new Class []{String .class});
240 result = constructor.newInstance(new Object []{value});
241 }
242 } catch (NoSuchMethodException e) {
243 log.fatal(value + " : " + clazz.getName()
244 + " doesn't have a single String arg constructor", e);
245 result = null;
246 } catch (Exception e) {
247 log.error(e.getClass().getName() + " : " + value, e);
248 result = null;
249 }
250 return result;
251 }
252
253
259 public String toString() {
260 return "[" + getDescription() + " - " + getClass().getName() + "]";
261 }
262
263
264 class ResourceFactory extends CGDefaults {
265
266 public ResourceFactory() {
267 super(null);
268 }
269
270 public Object get(Object key, Class type) {
271 Object value = get(key);
272 if (value != null)
273 return value;
274
275 String property;
276 if (key instanceof Class ) {
277 Class clazz = (Class ) key;
278 do {
279 property = properties.getProperty(clazz.getName());
280 clazz = clazz.getSuperclass();
281 } while (property == null && clazz != null);
282 } else
283 property = properties.getProperty(key.toString());
284
285 if (property == null) {
286 put(key, null);
287 return null;
288 }
289
290 if (ComponentCG.class.isAssignableFrom(type) || LayoutCG.class.isAssignableFrom(type) || PrefixAndSuffixDelegate.class.isAssignableFrom(type))
291 value = makeCG(property);
292 else if (type.isAssignableFrom(SIcon.class))
293 value = makeIcon(property);
294 else if (type.isAssignableFrom(Resource.class))
295 value = makeResource(property);
296 else if (type.isAssignableFrom(CSSAttributeSet.class))
297 value = makeAttributeSet(property);
298 else if (type.isAssignableFrom(StyleSheet.class))
299 value = makeStyleSheet(property);
300 else if (type.isAssignableFrom(Color.class))
301 value = makeColor(property);
302 else if (type.isAssignableFrom(SDimension.class))
303 value = makeDimension(property);
304 else
305 value = makeObject(property, type);
306
307 put(key, value);
308 return value;
309 }
310 }
311 }
312
313
314 |
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