Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Option |
|
| 2.5;2.5 |
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.hivemind.ApplicationRuntimeException; | |
18 | import org.apache.tapestry.AbstractComponent; | |
19 | import org.apache.tapestry.IMarkupWriter; | |
20 | import org.apache.tapestry.IRequestCycle; | |
21 | import org.apache.tapestry.Tapestry; | |
22 | ||
23 | /** | |
24 | * A component that renders an HTML <option> form element. Such a component must be wrapped | |
25 | * (possibly indirectly) inside a {@link Select}component. [ <a | |
26 | * href="../../../../../components/form/option.html">Component Reference </a>] | |
27 | * | |
28 | * @author Howard Lewis Ship | |
29 | */ | |
30 | ||
31 | 0 | public abstract class Option extends AbstractComponent |
32 | { | |
33 | /** | |
34 | * Renders the <option> element, or responds when the form containing the element is | |
35 | * submitted (by checking {@link Form#isRewinding()}. | |
36 | * <p> | |
37 | * If the <code>label</code> property is set, it is inserted inside the <option> | |
38 | * element. | |
39 | */ | |
40 | ||
41 | protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) | |
42 | { | |
43 | 0 | Select select = Select.get(cycle); |
44 | 0 | if (select == null) |
45 | 0 | throw new ApplicationRuntimeException(Tapestry |
46 | .getMessage("Option.must-be-contained-by-select"), this, null, null); | |
47 | ||
48 | // It isn't enough to know whether the cycle in general is rewinding, need to know | |
49 | // specifically if the form which contains this component is rewinding. | |
50 | ||
51 | 0 | boolean rewinding = select.isRewinding(); |
52 | ||
53 | 0 | String value = select.getNextOptionId(); |
54 | ||
55 | 0 | if (rewinding) |
56 | { | |
57 | 0 | if (!select.isDisabled()) |
58 | 0 | setSelected(select.isSelected(value)); |
59 | ||
60 | 0 | renderBody(writer, cycle); |
61 | } | |
62 | else | |
63 | { | |
64 | 0 | writer.begin("option"); |
65 | ||
66 | 0 | writer.attribute("value", value); |
67 | ||
68 | 0 | if (isSelected()) |
69 | 0 | writer.attribute("selected", "selected"); |
70 | ||
71 | 0 | renderInformalParameters(writer, cycle); |
72 | ||
73 | 0 | String label = getLabel(); |
74 | ||
75 | 0 | if (label != null) |
76 | 0 | writer.print(label); |
77 | ||
78 | 0 | renderBody(writer, cycle); |
79 | ||
80 | 0 | writer.end(); |
81 | } | |
82 | ||
83 | 0 | } |
84 | ||
85 | public abstract String getLabel(); | |
86 | ||
87 | public abstract boolean isSelected(); | |
88 | ||
89 | public abstract void setSelected(boolean selected); | |
90 | } |