/* AbstractTableModel.java -- Copyright (C) 2002 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ package javax.swing.table; // Imports import java.io.*; import java.util.*; import javax.swing.event.*; /** * AbstractTableModel * @author Andrew Selkirk */ public abstract class AbstractTableModel implements TableModel, Serializable { //------------------------------------------------------------- // Variables -------------------------------------------------- //------------------------------------------------------------- /** * listenerList */ protected EventListenerList listenerList = new EventListenerList(); //------------------------------------------------------------- // Initialization --------------------------------------------- //------------------------------------------------------------- /** * Constructor AbstractTableModel */ public AbstractTableModel() { // TODO } // AbstractTableModel() //------------------------------------------------------------- // Methods ---------------------------------------------------- //------------------------------------------------------------- /** * getColumnName * @param value0 TODO * @returns String */ public String getColumnName(int columnIndex) { // Variables int index; int left; int base; int multiplier; StringBuffer buffer; boolean foundFirst; // Ok, this is not the best solution in the world // and it does produce wrong answers starting 1378 // but it's a start. I sure hope there is a more // simple algorithm. I started with a base 10 to // base 26 converter and later found that there // were so many are exceptions that it has morphed // into a pile of goop. // NOTE2: I have a working algorithm which is much // much simplier and works for all values...I'll // be adding it soon... // Process Exponent levels buffer = new StringBuffer(); left = columnIndex; foundFirst = false; for (index = 6; index >= 0; index--) { base = (int) (Math.pow(26, index)); if (index > 1) { base = base + (int) (Math.pow(26, index - 1)); } if (base <= left) { multiplier = left / base; if (foundFirst == false && index > 0) { buffer.append((char) (multiplier + 64)); } else { buffer.append((char) (multiplier + 65)); } left = left - (base * multiplier); foundFirst = true; } else if (foundFirst == true || index == 0) { buffer.append('A'); } } // for // Return Column Name return buffer.toString(); } // getColumnName() /** * findColumn * @param value0 TODO * @returns int */ public int findColumn(String columnName) { // Variables int index; String name; int count; // Process Columns count = getColumnCount(); for (index = 0; index < count; index++) { name = getColumnName(index); if (columnName.equals(name) == true) { return index; } // if } // for // Unable to Locate return -1; } // findColumn() /** * getColumnClass * @param value0 TODO * @returns Class */ public Class getColumnClass(int columnIndex) { return Object.class; } // getColumnClass() /** * isCellEditable * @param value0 TODO * @param value1 TODO * @returns boolean */ public boolean isCellEditable(int rowIndex, int columnIndex) { return false; } // isCellEditable() /** * setValueAt * @param value0 TODO * @param value1 TODO * @param value2 TODO */ public void setValueAt(Object value, int rowIndex, int columnIndex) { // Do nothing... } // setValueAt() /** * addTableModelListener * @param value0 TODO */ public void addTableModelListener(TableModelListener listener) { listenerList.add(TableModelListener.class, listener); } // addTableModelListener() /** * removeTableModelListener * @param value0 TODO */ public void removeTableModelListener(TableModelListener listener) { listenerList.remove(TableModelListener.class, listener); } // removeTableModelListener() /** * fireTableDataChanged */ public void fireTableDataChanged() { fireTableChanged(new TableModelEvent(this)); } // fireTableDataChanged() /** * fireTableStructureChanged */ public void fireTableStructureChanged() { fireTableChanged(new TableModelEvent(this, TableModelEvent.HEADER_ROW)); } // fireTableStructureChanged() /** * fireTableRowsInserted * @param value0 TODO * @param value1 TODO */ public void fireTableRowsInserted(int firstRow, int lastRow) { fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT)); } // fireTableRowsInserted() /** * fireTableRowsUpdated * @param value0 TODO * @param value1 TODO */ public void fireTableRowsUpdated(int firstRow, int lastRow) { fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.UPDATE)); } // fireTableRowsUpdated() /** * fireTableRowsDeleted * @param value0 TODO * @param value1 TODO */ public void fireTableRowsDeleted(int firstRow, int lastRow) { fireTableChanged(new TableModelEvent(this, firstRow, lastRow, TableModelEvent.ALL_COLUMNS, TableModelEvent.DELETE)); } // fireTableRowsDeleted() /** * fireTableCellUpdated * @param value0 TODO * @param value1 TODO */ public void fireTableCellUpdated(int row, int column) { fireTableChanged(new TableModelEvent(this, row, row, column)); } // fireTableCellUpdated() /** * fireTableChanged * @param value0 TODO */ public void fireTableChanged(TableModelEvent event) { // Variables Object[] list; int index; TableModelListener listener; // Get Listener List list = listenerList.getListenerList(); for (index = 0; index < list.length; index += 2) { // Get Listener listener = (TableModelListener) list[index + 1]; // Notify Listener listener.tableChanged(event); } // for: index } // fireTableChanged() /** * getListeners * @param value0 TODO * @returns EventListener[] */ public EventListener[] getListeners(Class listenerType) { return listenerList.getListeners(listenerType); } // getListeners() /** * getValueAt * @param value0 TODO * @param value1 TODO * @returns Object */ public abstract Object getValueAt(int row, int column); /** * getColumnCount * @returns int */ public abstract int getColumnCount(); /** * getRowCount * @returns int */ public abstract int getRowCount(); } // AbstractTableModel