1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
|
|
6 |
|
|
7 |
|
|
8 |
|
|
9 |
|
|
10 |
|
|
11 |
|
|
12 |
|
|
13 |
|
|
14 |
|
|
15 |
|
package org.apache.tapestry.enhance; |
16 |
|
|
17 |
|
import org.apache.hivemind.ApplicationRuntimeException; |
18 |
|
import org.apache.hivemind.Location; |
19 |
|
import org.apache.hivemind.service.BodyBuilder; |
20 |
|
import org.apache.hivemind.service.MethodSignature; |
21 |
|
import org.apache.hivemind.util.Defense; |
22 |
|
import org.apache.tapestry.engine.state.ApplicationStateManager; |
23 |
|
import org.apache.tapestry.spec.InjectSpecification; |
24 |
|
|
25 |
|
import java.lang.reflect.Modifier; |
26 |
|
|
27 |
|
|
28 |
|
|
29 |
|
|
30 |
|
|
31 |
|
|
32 |
|
|
33 |
|
|
34 |
|
|
35 |
3 |
public class InjectStateFlagWorker implements InjectEnhancementWorker |
36 |
|
{ |
37 |
|
private ApplicationStateManager _applicationStateManager; |
38 |
|
|
39 |
|
public void performEnhancement(EnhancementOperation op, InjectSpecification spec) |
40 |
|
{ |
41 |
3 |
injectStateFlag(op, spec.getObject(), spec.getProperty(), spec.getLocation()); |
42 |
2 |
} |
43 |
|
|
44 |
|
void injectStateFlag(EnhancementOperation op, String objectName, String propertyName, |
45 |
|
Location location) |
46 |
|
{ |
47 |
3 |
Defense.notNull(op, "op"); |
48 |
3 |
Defense.notNull(objectName, "objectName"); |
49 |
3 |
Defense.notNull(propertyName, "propertyName"); |
50 |
|
|
51 |
3 |
Class propertyType = op.getPropertyType(propertyName); |
52 |
|
|
53 |
|
|
54 |
|
|
55 |
|
|
56 |
3 |
if (propertyType != null && propertyType != boolean.class) |
57 |
1 |
throw new ApplicationRuntimeException(EnhanceMessages.mustBeBoolean(propertyName), |
58 |
|
location, null); |
59 |
|
|
60 |
2 |
op.claimReadonlyProperty(propertyName); |
61 |
|
|
62 |
2 |
String managerField = op.addInjectedField( |
63 |
|
"_$applicationStateManager", |
64 |
1 |
ApplicationStateManager.class, |
65 |
|
_applicationStateManager); |
66 |
|
|
67 |
2 |
BodyBuilder builder = new BodyBuilder(); |
68 |
2 |
builder.begin(); |
69 |
2 |
builder.add("return {0}.exists(", managerField); |
70 |
2 |
builder.addQuoted(objectName); |
71 |
2 |
builder.addln(");"); |
72 |
2 |
builder.end(); |
73 |
|
|
74 |
2 |
String methodName = op.getAccessorMethodName(propertyName); |
75 |
|
|
76 |
2 |
MethodSignature sig = new MethodSignature(boolean.class, methodName, null, null); |
77 |
|
|
78 |
2 |
op.addMethod(Modifier.PUBLIC, sig, builder.toString(), location); |
79 |
2 |
} |
80 |
|
|
81 |
|
public void setApplicationStateManager(ApplicationStateManager applicationStateManager) |
82 |
|
{ |
83 |
3 |
_applicationStateManager = applicationStateManager; |
84 |
3 |
} |
85 |
|
|
86 |
|
} |