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org.apache.commons.jelly.tags.swing.TrTag	4%	83%

1		/*
2		* Copyright 2002,2004 The Apache Software Foundation.
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*/
16		package org.apache.commons.jelly.tags.swing;
17
18		import java.awt.Component;
19		import java.awt.GridBagConstraints;
20		import java.util.ArrayList;
21		import java.util.Iterator;
22		import java.util.List;
23
24		import org.apache.commons.jelly.JellyTagException;
25		import org.apache.commons.jelly.TagSupport;
26		import org.apache.commons.jelly.XMLOutput;
27		import org.apache.commons.jelly.tags.swing.impl.Cell;
28		import org.apache.commons.logging.Log;
29		import org.apache.commons.logging.LogFactory;
30
31		/**
32		* Represents a tabular row inside a <tableLayout> tag which mimicks the
33		* <tr> HTML tag.
34		*
35		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
36		* @version $Revision: 155420 $
37		*/
38		public class TrTag extends TagSupport {
39
40		/** The Log to which logging calls will be made. */
41	8	private static final Log log = LogFactory.getLog(TrTag.class);
42
43		private TableLayoutTag tableLayoutTag;
44	0	private List cells = new ArrayList();
45		private int rowIndex;
46
47	0	public TrTag() {
48	0	}
49
50		/**
51		* Adds a new cell to this row
52		*/
53		public void addCell(Component component, GridBagConstraints constraints) throws JellyTagException {
54	0	constraints.gridx = cells.size();
55	0	cells.add(new Cell(constraints, component));
56	0	}
57
58
59		// Tag interface
60		//-------------------------------------------------------------------------
61		public void doTag(final XMLOutput output) throws JellyTagException {
62	0	tableLayoutTag = (TableLayoutTag) findAncestorWithClass( TableLayoutTag.class );
63	0	if (tableLayoutTag == null) {
64	0	throw new JellyTagException( "this tag must be nested within a <tableLayout> tag" );
65		}
66	0	rowIndex = tableLayoutTag.nextRowIndex();
67	0	cells.clear();
68
69	0	invokeBody(output);
70
71		// now iterate through the rows and add each one to the layout...
72	0	int colIndex = 0;
73	0	for (Iterator iter = cells.iterator(); iter.hasNext(); ) {
74	0	Cell cell = (Cell) iter.next();
75	0	GridBagConstraints c = cell.getConstraints();
76
77		// are we the last cell in the row
78	0	if ( iter.hasNext() ) {
79		// not last in row
80	0	c.gridwidth = 1;
81	0	c.gridx = colIndex++;
82		}
83		else {
84		// end of row
85	0	c.gridwidth = GridBagConstraints.REMAINDER;
86		}
87	0	c.gridy = rowIndex;
88
89		// now lets add the cell to the table
90	0	tableLayoutTag.addCell(cell);
91		}
92	0	cells.clear();
93	0	}
94
95		// Properties
96		//-------------------------------------------------------------------------
97
98		/**
99		* @return the row index of this row
100		*/
101		public int getRowIndex() {
102	0	return rowIndex;
103		}
104
105		}

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