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1 package org.apache.slide.projector.descriptor;
2
3 import java.util.ArrayList  ;
4 import java.util.Iterator ;
5 import java.util.List ;
6
7 import org.apache.slide.projector.ContentType;
8 import org.apache.slide.projector.Context;
9 import org.apache.slide.projector.i18n.ErrorMessage;
10 import org.apache.slide.projector.value.ArrayValue;
11 import org.apache.slide.projector.value.ObjectValue;
12 import org.apache.slide.projector.value.StringValue;
13 import org.apache.slide.projector.value.Value;
14
15 public class AnyValueDescriptor implements ValueDescriptor {
16 protected List allowedContentTypes = new ArrayList ();
17 private boolean constrained = false;
18
19 public AnyValueDescriptor() {
20 }
21
22 public AnyValueDescriptor(String allowedContentType) {
23 allowedContentTypes.add(allowedContentType);
24 constrained = true;
25 }
26
27 public void addAllowedContentType(String allowedContentType) {
28 allowedContentTypes.add(allowedContentType);
29 constrained = true;
30 }
31
32 public String [] getAllowedContentTypes() {
33 return (String [])allowedContentTypes.toArray(new String [0]);
34 }
35
36 public Value valueOf(Object value, Context context) throws ValueCastException {
37 if ( value instanceof Value ) {
38 return (Value)value;
39 } else if ( value instanceof String ) {
40 return new StringValue((String )value);
41 } else if ( value instanceof String [] ) {
42 Value []elements = new Value[((String [])value).length];
44 for ( int i = 0; i < ((String [])value).length; i++ ) {
45 elements[i] = new StringValue(((String [])value)[i]);
46 }
47 return new ArrayValue(elements);
48 } else {
49 return new ObjectValue(value);
50 }
51 }
52
53 public void validate(Value value, Context context) throws ValidationException {
54 if ( constrained ) {
55 for ( Iterator i = allowedContentTypes.iterator(); i.hasNext(); ) {
56 if ( ContentType.matches((String )i.next(), ((Value)value).getContentType()) ) {
57 return;
58 }
59 }
60 throw new ValidationException(new ErrorMessage("invalidValue", new String [] { ((Value)value).getContentType(), ContentType.getContentTypesAsString(allowedContentTypes) }));
61 }
62 }
63 } |
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