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| org.apache.commons.jelly.tags.core.DefaultTag |
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| 1 | /* |
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| 2 | * Copyright 2002,2004 The Apache Software Foundation. |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | package org.apache.commons.jelly.tags.core; |
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| 17 | ||
| 18 | import org.apache.commons.jelly.JellyTagException; |
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| 19 | import org.apache.commons.jelly.TagSupport; |
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| 20 | import org.apache.commons.jelly.XMLOutput; |
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| 21 | ||
| 22 | ||
| 23 | /** |
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| 24 | * A tag which conditionally evaluates its body if |
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| 25 | * none of its preceeding sibling {@link CaseTag <case>} |
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| 26 | * tags have been evaluated. |
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| 27 | * |
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| 28 | * This tag must be contained within the body of some |
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| 29 | * {@link SwitchTag <switch>} tag. |
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| 30 | * |
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| 31 | * @see SwitchTag |
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| 32 | * |
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| 33 | * @author Rodney Waldhoff |
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| 34 | * @version $Revision: 155420 $ $Date: 2005-02-27 00:06:03 +1100 (Sun, 27 Feb 2005) $ |
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| 35 | */ |
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| 36 | public class DefaultTag extends TagSupport { |
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| 37 | ||
| 38 | 195 | public DefaultTag() { |
| 39 | 195 | } |
| 40 | ||
| 41 | // Tag interface |
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| 42 | //------------------------------------------------------------------------- |
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| 43 | ||
| 44 | public void setFallThru(boolean fallThru) { |
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| 45 | 0 | this.fallThru = fallThru; |
| 46 | 0 | } |
| 47 | ||
| 48 | public void doTag(XMLOutput output) throws JellyTagException { |
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| 49 | 221 | SwitchTag tag = (SwitchTag)findAncestorWithClass(SwitchTag.class); |
| 50 | 208 | if(null == tag) { |
| 51 | 13 | throw new JellyTagException("This tag must be enclosed inside a <switch> tag" ); |
| 52 | } |
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| 53 | 195 | if(tag.hasDefaultBeenEncountered()) { |
| 54 | 13 | throw new JellyTagException("Only one <default> tag is allowed per <switch>."); |
| 55 | } |
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| 56 | 182 | tag.defaultEncountered(); |
| 57 | 182 | if(tag.isFallingThru() || (!tag.hasSomeCaseMatched())) { |
| 58 | 65 | tag.caseMatched(); |
| 59 | 65 | tag.setFallingThru(fallThru); |
| 60 | 65 | invokeBody(output); |
| 61 | } |
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| 62 | 182 | } |
| 63 | ||
| 64 | // Attributes |
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| 65 | //------------------------------------------------------------------------- |
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| 66 | 195 | private boolean fallThru = false; |
| 67 | ||
| 68 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |