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org.apache.commons.jelly.tags.jface.DoubleClickListenerTag |
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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.jface; |
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17 | ||
18 | import org.apache.commons.jelly.JellyTagException; |
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19 | import org.apache.commons.jelly.MissingAttributeException; |
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20 | import org.apache.commons.jelly.TagSupport; |
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21 | import org.apache.commons.jelly.XMLOutput; |
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22 | import org.apache.commons.logging.Log; |
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23 | import org.apache.commons.logging.LogFactory; |
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24 | import org.eclipse.jface.viewers.DoubleClickEvent; |
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25 | import org.eclipse.jface.viewers.IDoubleClickListener; |
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26 | import org.eclipse.jface.viewers.StructuredViewer; |
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27 | import org.eclipse.jface.viewers.Viewer; |
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28 | ||
29 | /** |
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30 | * This tag adds a listener for double-clicks in this viewer. |
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31 | * |
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32 | * @author <a href="mailto:ckl@dacelo.nl">Christiaan ten Klooster</a> |
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33 | */ |
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34 | 0 | public class DoubleClickListenerTag |
35 | extends TagSupport |
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36 | implements IDoubleClickListener { |
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37 | ||
38 | /** The Log to which logging calls will be made. */ |
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39 | 0 | private static final Log log = LogFactory.getLog(DoubleClickListenerTag.class); |
40 | ||
41 | 0 | private String var = "event"; |
42 | private XMLOutput output; |
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43 | ||
44 | /* |
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45 | * @see org.apache.commons.jelly.Tag#doTag(org.apache.commons.jelly.XMLOutput) |
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46 | */ |
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47 | public void doTag(XMLOutput output) |
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48 | throws MissingAttributeException, JellyTagException { |
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49 | 0 | if (var == null) { |
50 | 0 | throw new MissingAttributeException("var"); |
51 | } |
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52 | ||
53 | 0 | StructuredViewer viewer = getParentViewer(); |
54 | 0 | if (viewer == null) { |
55 | 0 | throw new JellyTagException("This tag must be nested within a viewer tag"); |
56 | } |
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57 | ||
58 | 0 | viewer.addDoubleClickListener(this); |
59 | 0 | this.output = output; |
60 | 0 | } |
61 | ||
62 | public StructuredViewer getParentViewer() { |
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63 | 0 | ViewerTag tag = (ViewerTag) findAncestorWithClass(ViewerTag.class); |
64 | 0 | if (tag != null) { |
65 | 0 | Viewer viewer = tag.getViewer(); |
66 | 0 | if (viewer instanceof StructuredViewer) { |
67 | 0 | return (StructuredViewer) viewer; |
68 | } |
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69 | } |
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70 | 0 | return null; |
71 | } |
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72 | ||
73 | /** |
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74 | * @return String |
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75 | */ |
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76 | public String getVar() { |
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77 | 0 | return var; |
78 | } |
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79 | ||
80 | /** |
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81 | * Sets the var. |
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82 | * @param var The var to set |
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83 | */ |
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84 | public void setVar(String var) { |
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85 | 0 | this.var = class="keyword">var; |
86 | 0 | } |
87 | ||
88 | // Listener interface |
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89 | //------------------------------------------------------------------------- |
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90 | /* |
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91 | * @see org.eclipse.jface.viewers.IDoubleClickListener#doubleClick(org.eclipse.jface.viewers.DoubleClickEvent) |
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92 | */ |
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93 | public void doubleClick(DoubleClickEvent event) { |
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94 | try { |
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95 | 0 | context.setVariable(var, event); |
96 | 0 | invokeBody(output); |
97 | 0 | } catch (Exception e) { |
98 | 0 | log.error( |
99 | "Caught exception: " + e + " while processing event: " + event, |
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100 | e); |
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101 | } |
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102 | 0 | } |
103 | ||
104 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |