1 package cz.cuni.amis.pogamut.base.component.bus.event.impl;
2
3 import java.lang.ref.SoftReference;
4 import java.lang.reflect.Method;
5
6 import cz.cuni.amis.pogamut.base.component.IComponent;
7 import cz.cuni.amis.pogamut.base.component.bus.IComponentEvent;
8 import cz.cuni.amis.utils.NullCheck;
9
10 /**
11 * Note that this is sort of utility class providing pretty-print (reflection based) for toString(), not every
12 * event must be descendant of this class. For listener event class specification use always interfaces!
13 * @author Jimmy
14 *
15 * @param <SOURCE>
16 */
17 public class ComponentEvent<SOURCE extends IComponent> implements IComponentEvent<SOURCE> {
18
19 private SOURCE source;
20
21 private SoftReference<String> desc = null;
22
23 public ComponentEvent(SOURCE source) {
24 this.source = source;
25 NullCheck.check(this.source, "source");
26 }
27
28 @Override
29 public SOURCE getSource() {
30 return source;
31 }
32
33 // @Override
34 // public String toString() {
35 // if (desc != null) {
36 // String desc = this.desc.get();
37 // if (desc != null) return desc;
38 // }
39 // StringBuffer sb = new StringBuffer();
40 // sb.append(getClass().getSimpleName());
41 // sb.append("[");
42 // Method[] methods = getClass().getMethods();
43 // boolean first = true;
44 // for (Method method : methods) {
45 // if (!method.getName().startsWith("get") || method.getParameterTypes().length != 0 || method.getReturnType().equals(Void.class)) {
46 // continue;
47 // }
48 // if (first) first = false;
49 // else sb.append(", ");
50 // sb.append(method.getName().substring(3));
51 // sb.append("=");
52 // Object obj;
53 // try {
54 // obj = method.invoke(this);
55 // } catch (Exception e) {
56 // sb.append("can't be obtained (" + e.getMessage() + ")");
57 // continue;
58 // }
59 // sb.append(obj == null ? "null" : obj.toString());
60 // }
61 // sb.append("]");
62 // String desc = sb.toString();
63 // this.desc = new SoftReference<String>(sb.toString());
64 // return desc;
65 // }
66
67 public String toString() {
68 return getClass().getSimpleName() + "[source=" + source + "]";
69 }
70
71 }