| Clover coverage report - Code Coverage for tapestry release 4.0.3 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| DirectLink.java | 87.5% | 93.3% | 100% | 92.3% |
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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.link; | |
| 16 | ||
| 17 | import java.util.List; | |
| 18 | ||
| 19 | import org.apache.tapestry.IActionListener; | |
| 20 | import org.apache.tapestry.IDirect; | |
| 21 | import org.apache.tapestry.IRequestCycle; | |
| 22 | import org.apache.tapestry.Tapestry; | |
| 23 | import org.apache.tapestry.engine.DirectServiceParameter; | |
| 24 | import org.apache.tapestry.engine.IEngineService; | |
| 25 | import org.apache.tapestry.engine.ILink; | |
| 26 | import org.apache.tapestry.listener.ListenerInvoker; | |
| 27 | ||
| 28 | /** | |
| 29 | * A component for creating a link using the direct service; used for actions that are not dependant | |
| 30 | * on dynamic page state. [ <a href="../../../../../ComponentReference/DirectLink.html">Component | |
| 31 | * Reference </a>] | |
| 32 | * | |
| 33 | * @author Howard Lewis Ship | |
| 34 | */ | |
| 35 | ||
| 36 | public abstract class DirectLink extends AbstractLinkComponent implements IDirect | |
| 37 | { | |
| 38 | public abstract IActionListener getListener(); | |
| 39 | ||
| 40 | /** | |
| 41 | * Returns true if the stateful parameter is bound to a true value. If stateful is not bound, | |
| 42 | * also returns the default, true. | |
| 43 | */ | |
| 44 | ||
| 45 | public abstract boolean isStateful(); | |
| 46 | ||
| 47 | 75 | public ILink getLink(IRequestCycle cycle) |
| 48 | { | |
| 49 | 75 | Object[] serviceParameters = constructServiceParameters(getParameters()); |
| 50 | ||
| 51 | 75 | DirectServiceParameter dsp = new DirectServiceParameter(this, serviceParameters); |
| 52 | ||
| 53 | 75 | return getDirectService().getLink(false, dsp); |
| 54 | } | |
| 55 | ||
| 56 | /** | |
| 57 | * Converts a service parameters value to an array of objects. This is used by the | |
| 58 | * {@link DirectLink},{@link ServiceLink}and {@link ExternalLink}components. | |
| 59 | * | |
| 60 | * @param parameterValue | |
| 61 | * the input value which may be | |
| 62 | * <ul> | |
| 63 | * <li>null (returns null) | |
| 64 | * <li>An array of Object (returns the array) | |
| 65 | * <li>A {@link List}(returns an array of the values in the List}) | |
| 66 | * <li>A single object (returns the object as a single-element array) | |
| 67 | * </ul> | |
| 68 | * @return An array representation of the input object. | |
| 69 | * @since 2.2 | |
| 70 | */ | |
| 71 | ||
| 72 | 180 | public static Object[] constructServiceParameters(Object parameterValue) |
| 73 | { | |
| 74 | 180 | if (parameterValue == null) |
| 75 | 141 | return null; |
| 76 | ||
| 77 | 39 | if (parameterValue instanceof Object[]) |
| 78 | 6 | return (Object[]) parameterValue; |
| 79 | ||
| 80 | 33 | if (parameterValue instanceof List) |
| 81 | { | |
| 82 | 24 | List list = (List) parameterValue; |
| 83 | ||
| 84 | 24 | return list.toArray(); |
| 85 | } | |
| 86 | ||
| 87 | 9 | return new Object[] |
| 88 | { parameterValue }; | |
| 89 | } | |
| 90 | ||
| 91 | /** | |
| 92 | * Invoked by the direct service to trigger the application-specific action by notifying the | |
| 93 | * {@link IActionListener listener}. | |
| 94 | * | |
| 95 | * @throws org.apache.tapestry.StaleSessionException | |
| 96 | * if the component is stateful, and the session is new. | |
| 97 | */ | |
| 98 | ||
| 99 | 69 | public void trigger(IRequestCycle cycle) |
| 100 | { | |
| 101 | 69 | IActionListener listener = getListener(); |
| 102 | ||
| 103 | 69 | if (listener == null) |
| 104 | 0 | throw Tapestry.createRequiredParameterException(this, "listener"); |
| 105 | ||
| 106 | 69 | getListenerInvoker().invokeListener(listener, this, cycle); |
| 107 | } | |
| 108 | ||
| 109 | /** @since 2.2 * */ | |
| 110 | ||
| 111 | public abstract Object getParameters(); | |
| 112 | ||
| 113 | /** | |
| 114 | * Injected. | |
| 115 | * | |
| 116 | * @since 4.0 | |
| 117 | */ | |
| 118 | ||
| 119 | public abstract ListenerInvoker getListenerInvoker(); | |
| 120 | ||
| 121 | /** | |
| 122 | * Injected. | |
| 123 | * | |
| 124 | * @since 4.0.3 | |
| 125 | */ | |
| 126 | public abstract IEngineService getDirectService(); | |
| 127 | } |
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