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


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
20 /**
21  * Interface for objects that contribute client-side events back to a form
22  *
23  * @author Paul Ferraro
24  * @since 4.0
25  */

26 public interface FormComponentContributor
27 {
28     /**
29      * Invoked by a form component after it finishes rendering its tag (but before the tag is
30      * closed) to allow this object to contribute to the component's rendering process. Typically
31      * used by Validators and Translators to add javascript methods to the form's submit event
32      * handler.
33      *
34      * @param writer
35      * allows contributor to write additional attributes into the component's tag
36      * @param cycle
37      * for accessing request information
38      * @param context
39      * utilities for genering messages and client-side validation
40      * @param field
41      * the field for which contributions are being rendered
42      */

43     public void renderContribution(IMarkupWriter writer, IRequestCycle cycle,
44             FormComponentContributorContext context, IFormComponent field);
45 }
46
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