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| org.apache.commons.jelly.tags.swt.LayoutTag |
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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.swt; |
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| 17 | ||
| 18 | import org.apache.commons.jelly.JellyTagException; |
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| 19 | import org.apache.commons.logging.Log; |
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| 20 | import org.apache.commons.logging.LogFactory; |
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| 21 | import org.eclipse.swt.SWT; |
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| 22 | import org.eclipse.swt.layout.FillLayout; |
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| 23 | import org.eclipse.swt.widgets.Composite; |
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| 24 | import org.eclipse.swt.widgets.Layout; |
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| 25 | import org.eclipse.swt.widgets.Widget; |
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| 26 | ||
| 27 | /** |
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| 28 | * Creates a new Layout implementations and adds it to the parent Widget. |
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| 29 | * |
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| 30 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
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| 31 | * @version 1.1 |
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| 32 | */ |
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| 33 | public class LayoutTag extends LayoutTagSupport { |
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| 34 | ||
| 35 | /** The Log to which logging calls will be made. */ |
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| 36 | 0 | private static final Log log = LogFactory.getLog(LayoutTag.class); |
| 37 | ||
| 38 | public LayoutTag(Class layoutClass) { |
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| 39 | 0 | super(layoutClass); |
| 40 | 0 | } |
| 41 | ||
| 42 | // Properties |
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| 43 | //------------------------------------------------------------------------- |
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| 44 | ||
| 45 | /** |
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| 46 | * @return the Layout if there is one otherwise null |
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| 47 | */ |
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| 48 | public Layout getLayout() { |
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| 49 | 0 | Object bean = getBean(); |
| 50 | 0 | if (bean instanceof Layout) { |
| 51 | 0 | return (Layout) bean; |
| 52 | } |
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| 53 | 0 | return null; |
| 54 | } |
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| 55 | ||
| 56 | // Implementation methods |
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| 57 | //------------------------------------------------------------------------- |
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| 58 | ||
| 59 | /** |
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| 60 | * Either defines a variable or adds the current component to the parent |
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| 61 | */ |
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| 62 | protected void processBean(String var, Object bean) |
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| 63 | throws JellyTagException { |
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| 64 | 0 | super.processBean(var, bean); |
| 65 | ||
| 66 | 0 | Widget parent = getParentWidget(); |
| 67 | ||
| 68 | 0 | if (parent instanceof Composite) { |
| 69 | 0 | Composite composite = (Composite) parent; |
| 70 | 0 | composite.setLayout(getLayout()); |
| 71 | ||
| 72 | } else { |
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| 73 | 0 | throw new JellyTagException("This tag must be nested within a composite widget tag"); |
| 74 | } |
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| 75 | 0 | } |
| 76 | ||
| 77 | /** |
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| 78 | * @see org.apache.commons.jelly.tags.swt.LayoutTagSupport#convertValue(java.lang.Object, java.lang.String, java.lang.Object) |
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| 79 | */ |
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| 80 | protected Object convertValue(Object bean, String name, Object value) |
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| 81 | throws JellyTagException { |
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| 82 | ||
| 83 | 0 | if (bean instanceof FillLayout |
| 84 | && name.equals("type") |
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| 85 | && value instanceof String) { |
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| 86 | 0 | int style = SwtHelper.parseStyle(SWT.class, (String) value); |
| 87 | 0 | return new Integer(style); |
| 88 | } |
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| 89 | 0 | return super.convertValue(bean, name, value); |
| 90 | } |
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| 91 | ||
| 92 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |