01: // Copyright 2007 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.services;
16:
17: import org.apache.tapestry.Binding;
18: import org.apache.tapestry.Translator;
19:
20: /**
21: * Used by certain form-control element component to obtain a default translator appropriate to the
22: * type of property editted by the component.
23: */
24: public interface TranslatorDefaultSource {
25: /**
26: * Finds a {@link Translator} that is appropriate to the given type, which is usually obtained
27: * via {@link Binding#getBindingType()}. Performs an inheritanced-based search for the best
28: * match.
29: *
30: * @param valueType
31: * the type of value for which a default translator is needed
32: * @return the matching translator
33: * @throws IllegalArgumentException
34: * if no translator may be found
35: */
36: Translator find(Class valueType);
37: }
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