001: /* ====================================================================
002: * The QueryForm License, Version 1.1
003: *
004: * Copyright (c) 1998 - 2003 David F. Glasser. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution,
020: * if any, must include the following acknowledgment:
021: * "This product includes software developed by
022: * David F. Glasser."
023: * Alternately, this acknowledgment may appear in the software itself,
024: * if and wherever such third-party acknowledgments normally appear.
025: *
026: * 4. The names "QueryForm" and "David F. Glasser" must
027: * not be used to endorse or promote products derived from this
028: * software without prior written permission. For written
029: * permission, please contact dglasser@pobox.com.
030: *
031: * 5. Products derived from this software may not be called "QueryForm",
032: * nor may "QueryForm" appear in their name, without prior written
033: * permission of David F. Glasser.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL DAVID F. GLASSER, THE APACHE SOFTWARE
039: * FOUNDATION OR ITS CONTRIBUTORS, OR ANY AUTHORS OR DISTRIBUTORS
040: * OF THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This product includes software developed by the
051: * Apache Software Foundation (http://www.apache.org/).
052: *
053: * ====================================================================
054: *
055: * $Source: /cvsroot/qform/qform/src/org/glasser/swing/table/AbstractColumnManager.java,v $
056: * $Revision: 1.1 $
057: * $Author: dglasser $
058: * $Date: 2003/01/26 00:19:08 $
059: *
060: * --------------------------------------------------------------------
061: */
062: package org.glasser.swing.table;
063:
064: import javax.swing.table.*;
065:
066: public abstract class AbstractColumnManager implements ColumnManager {
067:
068: protected String[] columnNames = null;
069:
070: protected Class[] columnClasses = null;
071:
072: protected boolean[] editableColumns = null;
073:
074: protected void setColumnNames(String[] columnNames) {
075: this .columnNames = columnNames;
076: }
077:
078: protected void setColumnClasses(Class[] columnClasses) {
079: this .columnClasses = columnClasses;
080: }
081:
082: public void setEditableColumns(boolean[] editableColumns) {
083: this .editableColumns = editableColumns;
084: }
085:
086: protected String[] getColumnNames() {
087: return columnNames;
088: }
089:
090: protected Class[] getColumnClasses() {
091: return columnClasses;
092: }
093:
094: public boolean[] getEditableColumns() {
095: return editableColumns;
096: }
097:
098: public AbstractColumnManager() {
099: }
100:
101: public AbstractColumnManager(String[] columnNames,
102: Class[] columnClasses) {
103: this .columnNames = columnNames;
104: this .columnClasses = columnClasses;
105: }
106:
107: /**
108: * Sets the value in the cell at <code>columnIndex</code> and
109: * <code>rowIndex</code> to <code>aValue</code>.
110: *
111: * @param newCellValue the new value
112: * @param rowIndex the row whose value is to be changed
113: * @param columnIndex the column whose value is to be changed
114: * @param rowObject the object which contains the entire row for this table.
115: * modifying the cell value will likely change this object in some way.
116: * @see #getValueAt
117: * @see #isCellEditable
118: */
119: public void setValueAt(Object newCellValue, int rowIndex,
120: int columnIndex, Object rowObject) {
121: throw new RuntimeException(
122: "setValueAt() has not been implemented in "
123: + getClass().getName() + ".");
124: }
125:
126: /**
127: * Returns the value in the cell at <code>columnIndex</code> and
128: * <code>rowIndex</code>.
129: *
130: * @param rowIndex the row containing the cell.
131: * @param columnIndex the columnContaining the cell.
132: * @param rowObject the object containing the row's data.
133: */
134: public abstract Object getValueAt(int rowIndex, int columnIndex,
135: Object rowObject);
136:
137: /**
138: * Returns the most specific superclass for all the cell values
139: * in the column. This is used by the <code>JTable</code> to set up a
140: * default renderer and editor for the column.
141: *
142: * @param columnIndex the index of the column
143: * @return the common ancestor class of the object values in the model.
144: */
145: public Class getColumnClass(int columnIndex) {
146: if (columnClasses == null)
147: return java.lang.Object.class;
148: return columnClasses[columnIndex];
149: }
150:
151: /**
152: * Returns true if the cell at <code>rowIndex</code> and
153: * <code>columnIndex</code>
154: * is editable. Otherwise, <code>setValueAt</code> on the cell will not
155: * change the value of that cell.
156: *
157: * @param rowIndex the row whose value to be queried
158: * @param columnIndex the column whose value to be queried
159: * @param rowObject the object which contains the entire row for this table.
160: * @return true if the cell is editable
161: * @see #setValueAt
162: */
163: public boolean isCellEditable(int rowIndex, int columnIndex,
164: Object rowObject) {
165: if (editableColumns == null)
166: return false;
167: return editableColumns[columnIndex];
168: }
169:
170: /**
171: * Returns the number of columns in the model. A
172: * <code>JTable</code> uses this method to determine how many columns it
173: * should create and display by default.
174: *
175: * @return the number of columns in the model
176: * @see #getRowCount
177: */
178: public int getColumnCount() {
179: if (columnNames == null)
180: return 0;
181: return columnNames.length;
182: }
183:
184: /**
185: * Returns the name of the column at <code>columnIndex</code>. This is used
186: * to initialize the table's column header name. Note: this name does
187: * not need to be unique; two columns in a table can have the same name.
188: *
189: * @param columnIndex the index of the column
190: * @return the name of the column
191: */
192: public String getColumnName(int columnIndex) {
193: if (columnNames == null)
194: return null;
195: return columnNames[columnIndex];
196: }
197:
198: }
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