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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
Checkbox.java | 100% | 93.8% | 66.7% | 91.3% |
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1 | // Copyright 2004, 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 | * Implements a component that manages an HTML <input type=checkbox> form element. [ <a | |
23 | * href="../../../../../ComponentReference/Checkbox.html">Component Reference </a>] | |
24 | * <p> | |
25 | * As of 4.0, this component can be validated. | |
26 | * | |
27 | * @author Howard Lewis Ship | |
28 | * @author Paul Ferraro | |
29 | */ | |
30 | public abstract class Checkbox extends AbstractFormComponent implements ValidatableField | |
31 | { | |
32 | /** | |
33 | * @see org.apache.tapestry.form.validator.AbstractRequirableField#renderRequirableFormComponent(org.apache.tapestry.IMarkupWriter, | |
34 | * org.apache.tapestry.IRequestCycle) | |
35 | */ | |
36 | 8 | protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
37 | { | |
38 | 8 | writer.beginEmpty("input"); |
39 | 8 | writer.attribute("type", "checkbox"); |
40 | ||
41 | 8 | writer.attribute("name", getName()); |
42 | ||
43 | 8 | if (isDisabled()) |
44 | 2 | writer.attribute("disabled", "disabled"); |
45 | ||
46 | 8 | if (getValue()) |
47 | 6 | writer.attribute("checked", "checked"); |
48 | ||
49 | 8 | renderIdAttribute(writer, cycle); |
50 | ||
51 | 8 | renderInformalParameters(writer, cycle); |
52 | ||
53 | 8 | writer.closeTag(); |
54 | } | |
55 | ||
56 | /** | |
57 | * In traditional HTML, many checkboxes would have the same name but different values. Under | |
58 | * Tapestry, it makes more sense to have different names and a fixed value. For a checkbox, we | |
59 | * only care about whether the name appears as a request parameter. | |
60 | */ | |
61 | 6 | protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
62 | { | |
63 | 6 | String value = cycle.getParameter(getName()); |
64 | ||
65 | 6 | try |
66 | { | |
67 | // This is atypical validation - since this component does not explicitly bind to an object | |
68 | 6 | getValidatableFieldSupport().validate(this, writer, cycle, value); |
69 | ||
70 | 4 | setValue(value != null); |
71 | } | |
72 | catch (ValidatorException e) | |
73 | { | |
74 | 2 | getForm().getDelegate().record(e); |
75 | } | |
76 | } | |
77 | ||
78 | public abstract boolean getValue(); | |
79 | ||
80 | public abstract void setValue(boolean selected); | |
81 | ||
82 | /** | |
83 | * Injected. | |
84 | */ | |
85 | public abstract ValidatableFieldSupport getValidatableFieldSupport(); | |
86 | ||
87 | /** | |
88 | * @see org.apache.tapestry.form.AbstractFormComponent#isRequired() | |
89 | */ | |
90 | 0 | public boolean isRequired() |
91 | { | |
92 | 0 | return getValidatableFieldSupport().isRequired(this); |
93 | } | |
94 | } |
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