| Clover coverage report - Code Coverage for tapestry release 4.0.3 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| Conditional.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.components; | |
| 16 | ||
| 17 | import org.apache.hivemind.HiveMind; | |
| 18 | import org.apache.tapestry.AbstractComponent; | |
| 19 | import org.apache.tapestry.IMarkupWriter; | |
| 20 | import org.apache.tapestry.IRequestCycle; | |
| 21 | ||
| 22 | /** | |
| 23 | * A conditional element on a page which will render its wrapped elements zero or one times. [ <a | |
| 24 | * href="../../../../../ComponentReference/Conditional.html">Component Reference </a>] | |
| 25 | * | |
| 26 | * @author Howard Lewis Ship, David Solis | |
| 27 | */ | |
| 28 | ||
| 29 | public abstract class Conditional extends AbstractComponent | |
| 30 | { | |
| 31 | /** | |
| 32 | * Renders its wrapped components only if the condition is true (technically, if condition | |
| 33 | * matches invert). Additionally, if element is specified, can emulate that HTML element if | |
| 34 | * condition is met | |
| 35 | */ | |
| 36 | ||
| 37 | 36 | protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
| 38 | { | |
| 39 | 36 | if (evaluateCondition()) |
| 40 | { | |
| 41 | 24 | String element = getElement(); |
| 42 | ||
| 43 | 24 | boolean render = !cycle.isRewinding() && HiveMind.isNonBlank(element); |
| 44 | ||
| 45 | 24 | if (render) |
| 46 | { | |
| 47 | 6 | writer.begin(element); |
| 48 | 6 | renderInformalParameters(writer, cycle); |
| 49 | } | |
| 50 | ||
| 51 | 24 | renderBody(writer, cycle); |
| 52 | ||
| 53 | 24 | if (render) |
| 54 | 6 | writer.end(element); |
| 55 | } | |
| 56 | } | |
| 57 | ||
| 58 | 36 | protected boolean evaluateCondition() |
| 59 | { | |
| 60 | 36 | return getCondition() != getInvert(); |
| 61 | } | |
| 62 | ||
| 63 | public abstract boolean getCondition(); | |
| 64 | ||
| 65 | public abstract boolean getInvert(); | |
| 66 | ||
| 67 | public abstract String getElement(); | |
| 68 | } |
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