Frames | No Frames |
1: /* DefaultTableCellRenderer.java -- 2: Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package javax.swing.table; 40: 41: import java.awt.Color; 42: import java.awt.Component; 43: import java.awt.Rectangle; 44: import java.io.Serializable; 45: 46: import javax.swing.BorderFactory; 47: import javax.swing.JLabel; 48: import javax.swing.JTable; 49: import javax.swing.UIManager; 50: import javax.swing.border.Border; 51: import javax.swing.border.EmptyBorder; 52: import javax.swing.JTextField; 53: 54: /** 55: * Class to display every cells. 56: */ 57: public class DefaultTableCellRenderer extends JLabel 58: implements TableCellRenderer, Serializable 59: { 60: static final long serialVersionUID = 7878911414715528324L; 61: 62: protected static Border noFocusBorder = new EmptyBorder(0, 0, 0, 0); 63: 64: public static class UIResource extends DefaultTableCellRenderer 65: implements javax.swing.plaf.UIResource 66: { 67: public UIResource() 68: { 69: super(); 70: } 71: } 72: 73: /** 74: * Stores the color set by setForeground(). 75: */ 76: Color foreground; 77: 78: /** 79: * Stores the color set by setBackground(). 80: */ 81: Color background; 82: 83: /** 84: * Creates a default table cell renderer with an empty border. 85: */ 86: public DefaultTableCellRenderer() 87: { 88: super(); 89: } 90: 91: /** 92: * Assign the unselected-foreground. 93: * 94: * @param c the color to assign 95: */ 96: public void setForeground(Color c) 97: { 98: super.setForeground(c); 99: foreground = c; 100: } 101: 102: /** 103: * Assign the unselected-background. 104: * 105: * @param c the color to assign 106: */ 107: public void setBackground(Color c) 108: { 109: super.setBackground(c); 110: background = c; 111: } 112: 113: /** 114: * Look and feel has changed. 115: * 116: * <p>Replaces the current UI object with the latest version from 117: * the UIManager.</p> 118: */ 119: public void updateUI() 120: { 121: super.updateUI(); 122: background = null; 123: foreground = null; 124: } 125: 126: /** 127: * Get the string value of the object and pass it to setText(). 128: * 129: * @param table the JTable 130: * @param value the value of the object 131: * @param isSelected is the cell selected? 132: * @param hasFocus has the cell the focus? 133: * @param row the row to render 134: * @param column the cell to render 135: * 136: * @return this component (the default table cell renderer) 137: */ 138: public Component getTableCellRendererComponent(JTable table, Object value, 139: boolean isSelected, 140: boolean hasFocus, 141: int row, int column) 142: { 143: if (value != null) 144: { 145: if (value instanceof JTextField) 146: return new JTextField(((JTextField)value).getText()); 147: super.setText(value.toString()); 148: } 149: 150: setOpaque(true); 151: 152: if (table == null) 153: return this; 154: 155: if (isSelected) 156: { 157: super.setBackground(table.getSelectionBackground()); 158: super.setForeground(table.getSelectionForeground()); 159: } 160: else 161: { 162: if (background != null) 163: super.setBackground(background); 164: else 165: super.setBackground(table.getBackground()); 166: if (foreground != null) 167: super.setForeground(foreground); 168: else 169: super.setForeground(table.getForeground()); 170: } 171: 172: if (hasFocus) 173: { 174: setBorder(UIManager.getBorder("Table.focusCellHighlightBorder")); 175: if (table.isCellEditable(row, column)) 176: { 177: super.setBackground(UIManager.getColor("Table.focusCellBackground")); 178: super.setForeground(UIManager.getColor("Table.focusCellForeground")); 179: } 180: } 181: else 182: setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1)); 183: 184: setEnabled(table.isEnabled()); 185: setFont(table.getFont()); 186: 187: // If the current background is equal to the table's background, then we 188: // can avoid filling the background by setting the renderer opaque. 189: Color back = getBackground(); 190: setOpaque(back != null && back.equals(table.getBackground())); 191: 192: return this; 193: } 194: 195: /** 196: * Overriden for performance. 197: * 198: * <p>This method needs to be overridden in a subclass to actually 199: * do something.</p> 200: * 201: * @return always true 202: */ 203: public boolean isOpaque() 204: { 205: return true; 206: } 207: 208: /** 209: * Overriden for performance. 210: * 211: * <p>This method needs to be overridden in a subclass to actually 212: * do something.</p> 213: */ 214: public void validate() 215: { 216: // Does nothing. 217: } 218: 219: public void revalidate() 220: { 221: // Does nothing. 222: } 223: 224: /** 225: * Overriden for performance. 226: * 227: * <p>This method needs to be overridden in a subclass to actually 228: * do something.</p> 229: */ 230: public void repaint(long tm, int x, int y, int width, int height) 231: { 232: // Does nothing. 233: } 234: 235: /** 236: * Overriden for performance. 237: * 238: * <p>This method needs to be overridden in a subclass to actually 239: * do something.</p> 240: */ 241: public void repaint(Rectangle r) 242: { 243: // Does nothing. 244: } 245: 246: /** 247: * Overriden for performance. 248: * 249: * <p>This method needs to be overridden in a subclass to actually 250: * do something.</p> 251: */ 252: protected void firePropertyChange(String propertyName, Object oldValue, 253: Object newValue) 254: { 255: // Does nothing. 256: } 257: 258: /** 259: * Overriden for performance. 260: * 261: * <p>This method needs to be overridden in a subclass to actually 262: * do something.</p> 263: */ 264: public void firePropertyChange(String propertyName, boolean oldValue, 265: boolean newValue) 266: { 267: // Does nothing. 268: } 269: 270: /** 271: * Sets the String for this cell. 272: * 273: * @param value the string value for this cell; if value is null it 274: * sets the text value to an empty string 275: */ 276: protected void setValue(Object value) 277: { 278: super.setText((value!=null) ? value.toString() : ""); 279: } 280: }