001 /* 002 $Id: TableLayoutCell.java,v 1.2 2003/12/23 13:41:57 jstrachan Exp $ 003 004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. 005 006 Redistribution and use of this software and associated documentation 007 ("Software"), with or without modification, are permitted provided 008 that the following conditions are met: 009 010 1. Redistributions of source code must retain copyright 011 statements and notices. Redistributions must also contain a 012 copy of this document. 013 014 2. Redistributions in binary form must reproduce the 015 above copyright notice, this list of conditions and the 016 following disclaimer in the documentation and/or other 017 materials provided with the distribution. 018 019 3. The name "groovy" must not be used to endorse or promote 020 products derived from this Software without prior written 021 permission of The Codehaus. For written permission, 022 please contact info@codehaus.org. 023 024 4. Products derived from this Software may not be called "groovy" 025 nor may "groovy" appear in their names without prior written 026 permission of The Codehaus. "groovy" is a registered 027 trademark of The Codehaus. 028 029 5. Due credit should be given to The Codehaus - 030 http://groovy.codehaus.org/ 031 032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS 033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 043 OF THE POSSIBILITY OF SUCH DAMAGE. 044 045 */ 046 package groovy.swing.impl; 047 048 import java.awt.Component; 049 import java.awt.GridBagConstraints; 050 import java.util.logging.Level; 051 import java.util.logging.Logger; 052 053 /** 054 * Represents a cell in a table layout 055 * 056 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 057 * @version $Revision: 1.2 $ 058 */ 059 public class TableLayoutCell implements ContainerFacade { 060 061 protected static final Logger log = Logger.getLogger(TableLayoutCell.class.getName()); 062 063 private TableLayoutRow parent; 064 private Component component; 065 private GridBagConstraints constraints; 066 private String align; 067 private String valign; 068 private int colspan = 1; 069 private int rowspan = 1; 070 private boolean colfill = false; 071 private boolean rowfill = false; 072 073 074 public TableLayoutCell(TableLayoutRow parent) { 075 this.parent = parent; 076 } 077 078 public void addComponent(Component component) { 079 if (this.component != null) { 080 log.log(Level.WARNING, "This td cell already has a component: " + component); 081 } 082 this.component = component; 083 parent.addCell(this); 084 } 085 086 public Component getComponent() { 087 return component; 088 } 089 090 /** 091 * Sets the horizontal alignment to a case insensitive value of {LEFT, CENTER, RIGHT} 092 */ 093 public void setAlign(String align) { 094 this.align = align; 095 } 096 097 /** 098 * Sets the vertical alignment to a case insensitive value of {TOP, MIDDLE, BOTTOM} 099 */ 100 public void setValign(String valign) { 101 this.valign = valign; 102 } 103 104 105 /** 106 * Sets the number of columns that this cell should span. The default value is 1 107 */ 108 public void setColspan(int colspan) { 109 this.colspan = colspan; 110 } 111 112 /** 113 * Sets the number of rows that this cell should span. The default value is 1 114 */ 115 public void setRowspan(int rowspan) { 116 this.rowspan = rowspan; 117 } 118 119 /** 120 * Returns the colfill. 121 * @return boolean 122 */ 123 public boolean isColfill() { 124 return colfill; 125 } 126 127 /** 128 * Returns the rowfill. 129 * @return boolean 130 */ 131 public boolean isRowfill() { 132 return rowfill; 133 } 134 135 /** 136 * Sets whether or not this column should allow its component to stretch to fill the space available 137 */ 138 public void setColfill(boolean colfill) { 139 this.colfill = colfill; 140 } 141 142 /** 143 * Sets whether or not this row should allow its component to stretch to fill the space available 144 */ 145 public void setRowfill(boolean rowfill) { 146 this.rowfill = rowfill; 147 } 148 149 150 /** 151 * @return the constraints of this cell 152 */ 153 public GridBagConstraints getConstraints() { 154 if (constraints == null) { 155 constraints = createConstraints(); 156 } 157 return constraints; 158 } 159 160 // Implementation methods 161 //------------------------------------------------------------------------- 162 163 protected GridBagConstraints createConstraints() { 164 GridBagConstraints answer = new GridBagConstraints(); 165 answer.anchor = getAnchor(); 166 if (colspan < 1) { 167 colspan = 1; 168 } 169 if (rowspan < 1) { 170 rowspan = 1; 171 } 172 if (isColfill()) { 173 answer.fill = isRowfill() 174 ? GridBagConstraints.BOTH 175 : GridBagConstraints.HORIZONTAL; 176 } 177 else { 178 answer.fill = isRowfill() 179 ? GridBagConstraints.VERTICAL 180 : GridBagConstraints.NONE; 181 } 182 answer.weightx = 0.2; 183 answer.weighty = 0; 184 answer.gridwidth = colspan; 185 answer.gridheight = rowspan; 186 return answer; 187 } 188 189 /** 190 * @return the GridBagConstraints enumeration for achor 191 */ 192 protected int getAnchor() { 193 boolean isTop = "top".equalsIgnoreCase(valign); 194 boolean isBottom = "bottom".equalsIgnoreCase(valign); 195 196 if ("center".equalsIgnoreCase(align)) { 197 if (isTop) { 198 return GridBagConstraints.NORTH; 199 } 200 else if (isBottom) { 201 return GridBagConstraints.SOUTH; 202 } 203 else { 204 return GridBagConstraints.CENTER; 205 } 206 } 207 else if ("right".equalsIgnoreCase(align)) { 208 if (isTop) { 209 return GridBagConstraints.NORTHEAST; 210 } 211 else if (isBottom) { 212 return GridBagConstraints.SOUTHEAST; 213 } 214 else { 215 return GridBagConstraints.EAST; 216 } 217 } 218 else { 219 // defaults to left 220 if (isTop) { 221 return GridBagConstraints.NORTHWEST; 222 } 223 else if (isBottom) { 224 return GridBagConstraints.SOUTHWEST; 225 } 226 else { 227 return GridBagConstraints.WEST; 228 } 229 } 230 } 231 }