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30 day Evaluation License registered to hlship@comcast.net Your 30 day evaluation period has expired. Please visit http://www.cenqua.com to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
Checkbox.java | 0% | 0% | 0% | 0% |
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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 | ||
20 | /** | |
21 | * Implements a component that manages an HTML <input type=checkbox> form element. [ <a | |
22 | * href="../../../../../ComponentReference/Checkbox.html">Component Reference </a>] | |
23 | * | |
24 | * @author Howard Lewis Ship | |
25 | * @author Paul Ferraro | |
26 | */ | |
27 | public abstract class Checkbox extends AbstractFormComponent | |
28 | { | |
29 | /** | |
30 | * @see org.apache.tapestry.form.validator.AbstractRequirableField#renderRequirableFormComponent(org.apache.tapestry.IMarkupWriter, | |
31 | * org.apache.tapestry.IRequestCycle) | |
32 | */ | |
33 | 0 | protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
34 | { | |
35 | 0 | writer.beginEmpty("input"); |
36 | 0 | writer.attribute("type", "checkbox"); |
37 | ||
38 | 0 | writer.attribute("name", getName()); |
39 | ||
40 | 0 | if (isDisabled()) |
41 | 0 | writer.attribute("disabled", "disabled"); |
42 | ||
43 | 0 | if (isSelected()) |
44 | 0 | writer.attribute("checked", "checked"); |
45 | ||
46 | 0 | renderIdAttribute(writer, cycle); |
47 | ||
48 | 0 | renderInformalParameters(writer, cycle); |
49 | ||
50 | 0 | writer.closeTag(); |
51 | } | |
52 | ||
53 | /** | |
54 | * In traditional HTML, many checkboxes would have the same name but different values. Under | |
55 | * Tapestry, it makes more sense to have different names and a fixed value. For a checkbox, we | |
56 | * only care about whether the name appears as a request parameter. | |
57 | */ | |
58 | 0 | protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
59 | { | |
60 | 0 | String value = cycle.getParameter(getName()); |
61 | ||
62 | 0 | setSelected(value != null); |
63 | } | |
64 | ||
65 | /** @since 2.2 */ | |
66 | public abstract boolean isSelected(); | |
67 | ||
68 | /** @since 2.2 */ | |
69 | public abstract void setSelected(boolean selected); | |
70 | } |
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