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1
17
18 package org.objectweb.jac.aspects.confirmation;
19
20 import org.aopalliance.intercept.ConstructorInvocation;
21 import org.aopalliance.intercept.MethodInvocation;
22 import org.apache.log4j.Logger;
23 import org.objectweb.jac.aspects.gui.DisplayContext;
24 import org.objectweb.jac.aspects.gui.GuiAC;
25 import org.objectweb.jac.core.AspectComponent;
26 import org.objectweb.jac.core.Display;
27 import org.objectweb.jac.core.Interaction;
28 import org.objectweb.jac.core.Wrapper;
29 import org.objectweb.jac.core.rtti.AbstractMethodItem;
30 import org.objectweb.jac.core.rtti.ClassRepository;
31 import org.objectweb.jac.core.rtti.NamingConventions;
32
33
36
37 public class ConfirmationAC
38 extends AspectComponent
39 implements ConfirmationConf
40 {
41 static final Logger logger = Logger.getLogger("confirmation");
42
43 static String  cancellationMessage = "invocation was cancelled by the user";
44 public void confirm(String classes, String methods, String objects) {
45 pointcut(
46 objects,
47 classes,
48 methods,
49 new ConfirmationWrapper(this),
50 "catchCancellation");
51 }
52
53 public void confirm(String classes, String methods, String objects, String message) {
54 pointcut(
55 objects,
56 classes,
57 methods,
58 new ConfirmationWrapper(this,message),
59 "catchCancellation");
60 }
61
62
65
66 public class ConfirmationWrapper extends Wrapper {
67
68 String message;
69
70 public ConfirmationWrapper(AspectComponent ac, String message) {
71 super(ac);
72 this.message = message;
73 }
74
75 public ConfirmationWrapper(AspectComponent ac) {
76 super(ac);
77 this.message = null;
78 }
79
80 public Object invoke(MethodInvocation invocation) throws Throwable {
81 return confirm((Interaction) invocation);
82 }
83
84 public Object construct(ConstructorInvocation invocation)
85 throws Throwable {
86 throw new Exception ("This wrapper does not support constructor wrapping");
87 }
88
89
90 public Object confirm(Interaction interaction)
91 throws OperationCanceledException
92 {
93 logger.debug("confirm " + interaction);
94 DisplayContext context =
95 (DisplayContext) this.attr(GuiAC.DISPLAY_CONTEXT);
96 logger.debug(" context=" + context);
97 AbstractMethodItem method = interaction.method;
98 if (context != null) {
99 Display display = context.getDisplay();
100 String actualMessage = message;
101 if (actualMessage == null) {
102 if (method.isRemover()) {
103 actualMessage =
104 "Do you really want to remove "
105 + NamingConventions.textForName(
106 ClassRepository.get().getClass(interaction.args[0]).getShortName())
107 + " '"
108 + GuiAC.toString(interaction.args[0])
109 + "' from "
110 + NamingConventions.textForName(
111 method.getRemovedCollections()[0].getName())
112 + " of "
113 + NamingConventions.textForName(
114 interaction.getClassItem().getShortName())
115 + " '"
116 + GuiAC.toString(interaction.wrappee)
117 + "' ?";
118 } else {
119 actualMessage =
120 "Do you really want to "
121 + NamingConventions.textForName(
122 interaction.method.getName())
123 + (interaction.method.isStatic()
124 ? ""
125 : (" for '" + GuiAC.toString(interaction.wrappee)) + "'")
126 + " ?";
127 }
128 }
129
130 if (!display.showMessage(actualMessage, "Confirmation", true, true, false)) {
131 throw new OperationCanceledException(interaction);
132 }
133 }
134 return interaction.proceed();
135 }
136
137
138 public void catchCancellation(OperationCanceledException e) {
139 System.out.println("Catching exception: " + e);
140 }
141
142 }
143
144 }
145
146 class OperationCanceledException extends Exception {
147 public OperationCanceledException(Interaction interaction) {
148 super("Operation cancelled: " + interaction.method);
149 }
150 }
151 |
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