| Clover coverage report - Code Coverage for tapestry release 4.0.3 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| Image.java | 100% | 100% | 100% | 100% |
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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.html; | |
| 16 | ||
| 17 | import org.apache.tapestry.AbstractComponent; | |
| 18 | import org.apache.tapestry.IAsset; | |
| 19 | import org.apache.tapestry.IMarkupWriter; | |
| 20 | import org.apache.tapestry.IRequestCycle; | |
| 21 | import org.apache.tapestry.Tapestry; | |
| 22 | ||
| 23 | /** | |
| 24 | * Used to insert an image. To create a rollover image, use the {@link Rollover} class, which | |
| 25 | * integrates a link with the image assets used with the button. [<a | |
| 26 | * href="../../../../../ComponentReference/Image.html">Component Reference</a>] | |
| 27 | * | |
| 28 | * @author Howard Lewis Ship | |
| 29 | */ | |
| 30 | ||
| 31 | public abstract class Image extends AbstractComponent | |
| 32 | { | |
| 33 | /** | |
| 34 | * Renders the <img> element. | |
| 35 | */ | |
| 36 | ||
| 37 | 39 | protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
| 38 | { | |
| 39 | // Doesn't contain a body so no need to do anything on rewind (assumes no | |
| 40 | // sideffects to accessor methods via bindings). | |
| 41 | ||
| 42 | 39 | if (cycle.isRewinding()) |
| 43 | 3 | return; |
| 44 | ||
| 45 | 36 | IAsset imageAsset = getImage(); |
| 46 | ||
| 47 | 36 | if (imageAsset == null) |
| 48 | 3 | throw Tapestry.createRequiredParameterException(this, "image"); |
| 49 | ||
| 50 | 33 | String imageURL = imageAsset.buildURL(); |
| 51 | ||
| 52 | 33 | writer.beginEmpty("img"); |
| 53 | ||
| 54 | 33 | writer.attribute("src", imageURL); |
| 55 | ||
| 56 | 33 | renderInformalParameters(writer, cycle); |
| 57 | ||
| 58 | 33 | writer.closeTag(); |
| 59 | } | |
| 60 | ||
| 61 | public abstract IAsset getImage(); | |
| 62 | } |
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