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Java > Open Source Codes > org > apache > tapestry > form > ValidatableFieldSupport


1 // Copyright 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
14

15 package org.apache.tapestry.form;
16
17 import org.apache.tapestry.IMarkupWriter;
18 import org.apache.tapestry.IRequestCycle;
19 import org.apache.tapestry.valid.ValidatorException;
20
21 /**
22  * Implements the logic used by {@link RequiredField}s for required field checking on rewind and
23  * generating client-side logic during render.
24  *
25  * @author Paul Ferraro
26  * @since 4.0
27  */

28 public interface ValidatableFieldSupport
29 {
30     /**
31      * Called during render of the specified component. Determines form element value used to render
32      * element.
33      */

34     public void render(ValidatableField component, IMarkupWriter writer, IRequestCycle cycle);
35
36     /**
37      * Called during render of the specified component. Renders any contributions from translator
38      * and validators.
39      */

40     public void renderContributions(ValidatableField component, IMarkupWriter writer,
41             IRequestCycle cycle);
42
43     /**
44      * Called during rewind of the specified component. Specified value is translated via the
45      * component's translator then validated using the component's validators.
46      *
47      * @throws ValidatorException
48      * if translation or validation fails
49      */

50     public void bind(ValidatableField component, IMarkupWriter writer, IRequestCycle cycle,
51             String JavaDoc value);
52 }
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