Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
Button |
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| 1.4;1.4 |
1 | // Copyright 2004, 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | ||
15 | package org.apache.tapestry.form; |
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16 | ||
17 | import org.apache.tapestry.IMarkupWriter; |
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18 | import org.apache.tapestry.IRequestCycle; |
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19 | ||
20 | /** |
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21 | * Implements a component that manages an HTML <button> form element. [ <a |
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22 | * href="../../../../../ComponentReference/Button.html">Component Reference </a>] |
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23 | * <p> |
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24 | * This component is useful for attaching JavaScript onclick event handlers. |
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25 | * |
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26 | * @author Howard Lewis Ship |
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27 | * @author Paul Geerts |
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28 | * @author Malcolm Edgar |
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29 | * @author Paul Ferraro |
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30 | */ |
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31 | 5 | public abstract class Button extends AbstractFormComponent |
32 | { |
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33 | /** |
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34 | * @see org.apache.tapestry.form.AbstractFormComponent#renderFormComponent(org.apache.tapestry.IMarkupWriter, |
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35 | * org.apache.tapestry.IRequestCycle) |
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36 | */ |
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37 | protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
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38 | { |
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39 | 4 | writer.begin("button"); |
40 | 4 | writer.attribute("type", "button"); |
41 | 4 | writer.attribute("name", getName()); |
42 | ||
43 | 4 | if (isDisabled()) |
44 | { |
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45 | 0 | writer.attribute("disabled", "disabled"); |
46 | } |
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47 | ||
48 | 4 | renderIdAttribute(writer, cycle); |
49 | ||
50 | 4 | renderInformalParameters(writer, cycle); |
51 | ||
52 | 4 | String label = getLabel(); |
53 | ||
54 | 4 | if (label != null) |
55 | 1 | writer.print(label); |
56 | else |
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57 | 3 | renderBody(writer, cycle); |
58 | ||
59 | 4 | writer.end(); |
60 | 4 | } |
61 | ||
62 | /** |
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63 | * @see org.apache.tapestry.form.AbstractFormComponent#rewindFormComponent(org.apache.tapestry.IMarkupWriter, org.apache.tapestry.IRequestCycle) |
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64 | */ |
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65 | protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
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66 | { |
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67 | // Do nothing |
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68 | 1 | } |
69 | ||
70 | /** |
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71 | * @see org.apache.tapestry.form.IFormComponent#getDisplayName() |
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72 | */ |
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73 | public String getDisplayName() |
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74 | { |
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75 | 0 | return null; |
76 | } |
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77 | ||
78 | /** |
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79 | * @see org.apache.tapestry.form.IFormComponent#isDisabled() |
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80 | */ |
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81 | public boolean isDisabled() |
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82 | { |
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83 | 4 | return false; |
84 | } |
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85 | ||
86 | public abstract String getLabel(); |
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87 | } |