Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
Submit |
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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 <input type=submit> form element. [ <a |
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22 | * href="../../../../../ComponentReference/Submit.html">Component Reference </a>] |
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23 | * <p> |
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24 | * This component is generally only used when the form has multiple submit buttons, and it is |
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25 | * important for the application to know which one was pressed. You may also want to use |
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26 | * {@link ImageSubmit}which accomplishes much the same thing, but uses a graphic image instead. |
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27 | * |
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28 | * @author Howard Lewis Ship |
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29 | */ |
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30 | ||
31 | 28 | public abstract class Submit extends AbstractSubmit |
32 | { |
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33 | protected boolean isClicked(IRequestCycle cycle, String name) |
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34 | { |
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35 | // How to know which Submit button was actually |
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36 | // clicked? When submitted, it produces a request parameter |
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37 | // with its name and value (the value serves double duty as both |
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38 | // the label on the button, and the parameter value). |
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39 | ||
40 | // If the value isn't there, then this button wasn't |
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41 | // selected. |
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42 | ||
43 | 2 | return cycle.getParameter(name) != null; |
44 | } |
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45 | ||
46 | /** |
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47 | * @see org.apache.tapestry.form.AbstractFormComponent#renderFormComponent(org.apache.tapestry.IMarkupWriter, |
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48 | * org.apache.tapestry.IRequestCycle) |
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49 | */ |
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50 | protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle) |
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51 | { |
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52 | 6 | writer.beginEmpty("input"); |
53 | 6 | writer.attribute("type", "submit"); |
54 | 6 | writer.attribute("name", getName()); |
55 | ||
56 | 6 | if (isDisabled()) |
57 | 2 | writer.attribute("disabled", "disabled"); |
58 | ||
59 | 6 | String label = getLabel(); |
60 | ||
61 | 6 | if (label != null) |
62 | 1 | writer.attribute("value", label); |
63 | ||
64 | 6 | renderIdAttribute(writer, cycle); |
65 | ||
66 | 6 | renderInformalParameters(writer, cycle); |
67 | ||
68 | 6 | renderSubmitBindings(writer, cycle); |
69 | ||
70 | 6 | writer.closeTag(); |
71 | 6 | } |
72 | ||
73 | /** parameter. */ |
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74 | public abstract String getLabel(); |
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75 | ||
76 | } |