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


1 // Copyright 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // 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.form;
16
17 import org.apache.tapestry.IMarkupWriter;
18 import org.apache.tapestry.IRequestCycle;
19 import org.apache.tapestry.valid.ValidatorException;
20
21 /**
22  * Abstract requirable field implementation that delegates render and bind (i.e. rewind) logic to an
23  * implementation of {@link ValidatableFieldSupport}.
24  *
25  * @author Paul Ferraro
26  * @since 4.0
27  */
28 public abstract class AbstractValidatableField extends AbstractFormComponent implements
29         ValidatableField
30 {
31     /**
32      * Injected.
33      */
34     public abstract ValidatableFieldSupport getValidatableFieldSupport();
35
36     /**
37      * @see org.apache.tapestry.form.AbstractFormComponent#renderFormComponent(org.apache.tapestry.IMarkupWriter,
38      * org.apache.tapestry.IRequestCycle)
39      */
40     protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle)
41     {
42         getValidatableFieldSupport().render(this, writer, cycle);
43     }
44
45     protected String JavaDoc getSubmittedValue(IRequestCycle cycle)
46     {
47         return cycle.getParameter(getName());
48     }
49
50     protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle)
51     {
52         String JavaDoc value = getSubmittedValue(cycle);
53
54         getValidatableFieldSupport().bind(this, writer, cycle, value);
55     }
56
57     protected void renderContributions(IMarkupWriter writer, IRequestCycle cycle)
58     {
59         getValidatableFieldSupport().renderContributions(this, writer, cycle);
60     }
61 }
62
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