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jeremybenn |
/* DefaultTableModel.java --
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Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.table;
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import java.io.Serializable;
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import java.util.Vector;
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import javax.swing.event.TableModelEvent;
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/**
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* A two dimensional data structure used to store <code>Object</code>
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* instances, usually for display in a <code>JTable</code> component.
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*
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* @author Andrew Selkirk
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*/
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public class DefaultTableModel extends AbstractTableModel
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implements Serializable
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{
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static final long serialVersionUID = 6680042567037222321L;
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/**
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* Storage for the rows in the table (each row is itself
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* a <code>Vector</code>).
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*/
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protected Vector dataVector;
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/**
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* Storage for the column identifiers.
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*/
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protected Vector columnIdentifiers;
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/**
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* Creates an empty table with zero rows and zero columns.
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*/
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public DefaultTableModel()
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{
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this(0, 0);
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}
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/**
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* Creates a new table with the specified number of rows and columns.
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* All cells in the table are initially empty (set to <code>null</code>).
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*
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* @param numRows the number of rows.
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* @param numColumns the number of columns.
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*/
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public DefaultTableModel(int numRows, int numColumns)
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{
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Vector defaultNames = new Vector(numColumns);
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Vector data = new Vector(numRows);
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for (int i = 0; i < numColumns; i++)
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{
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defaultNames.add(super.getColumnName(i));
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}
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for (int r = 0; r < numRows; r++)
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{
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Vector tmp = new Vector(numColumns);
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tmp.setSize(numColumns);
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data.add(tmp);
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}
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setDataVector(data, defaultNames);
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}
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/**
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* Creates a new table with the specified column names and number of
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* rows. The number of columns is determined by the number of column
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* names supplied.
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*
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* @param columnNames the column names.
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* @param numRows the number of rows.
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*/
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public DefaultTableModel(Vector columnNames, int numRows)
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{
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if (numRows < 0)
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throw new IllegalArgumentException("numRows < 0");
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Vector data = new Vector();
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int numColumns = 0;
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if (columnNames != null)
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numColumns = columnNames.size();
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while (0 < numRows--)
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{
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Vector rowData = new Vector();
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rowData.setSize(numColumns);
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data.add(rowData);
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}
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setDataVector(data, columnNames);
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}
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/**
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* Creates a new table with the specified column names and row count.
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*
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* @param columnNames the column names.
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* @param numRows the number of rows.
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*/
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public DefaultTableModel(Object[] columnNames, int numRows)
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{
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this(convertToVector(columnNames), numRows);
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}
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/**
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* Creates a new table with the specified data values and column names.
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*
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* @param data the data values.
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* @param columnNames the column names.
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*/
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public DefaultTableModel(Vector data, Vector columnNames)
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{
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setDataVector(data, columnNames);
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}
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/**
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* Creates a new table with the specified data values and column names.
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*
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* @param data the data values.
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* @param columnNames the column names.
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*/
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public DefaultTableModel(Object[][] data, Object[] columnNames)
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{
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this(convertToVector(data), convertToVector(columnNames));
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}
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/**
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* Returns the vector containing the row data for the table.
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*
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* @return The data vector.
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*/
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public Vector getDataVector()
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{
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return dataVector;
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}
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/**
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* Sets the data and column identifiers for the table. The data vector
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* contains a <code>Vector</code> for each row in the table - if the
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* number of objects in each row does not match the number of column
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* names specified, the row data is truncated or expanded (by adding
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* <code>null</code> values) as required.
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*
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* @param data the data for the table (a vector of row vectors).
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* @param columnNames the column names.
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*
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* @throws NullPointerException if either argument is <code>null</code>.
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*/
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public void setDataVector(Vector data, Vector columnNames)
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{
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if (data == null)
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dataVector = new Vector();
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else
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dataVector = data;
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setColumnIdentifiers(columnNames);
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}
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/**
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* Sets the data and column identifiers for the table.
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*
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* @param data the data for the table.
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* @param columnNames the column names.
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*
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* @throws NullPointerException if either argument is <code>null</code>.
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*/
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public void setDataVector(Object[][] data, Object[] columnNames)
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{
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setDataVector(convertToVector(data),
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convertToVector(columnNames));
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}
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/**
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* Sends the specified <code>event</code> to all registered listeners.
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* This method is equivalent to
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* {@link AbstractTableModel#fireTableChanged(TableModelEvent)}.
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*
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* @param event the event.
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*/
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public void newDataAvailable(TableModelEvent event)
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{
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fireTableChanged(event);
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}
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/**
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* Sends the specified <code>event</code> to all registered listeners.
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* This method is equivalent to
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* {@link AbstractTableModel#fireTableChanged(TableModelEvent)}.
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*
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* @param event the event.
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*/
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public void newRowsAdded(TableModelEvent event)
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{
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fireTableChanged(event);
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}
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/**
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* Sends the specified <code>event</code> to all registered listeners.
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* This method is equivalent to
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* {@link AbstractTableModel#fireTableChanged(TableModelEvent)}.
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*
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* @param event the event.
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*/
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public void rowsRemoved(TableModelEvent event)
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{
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fireTableChanged(event);
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}
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/**
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* Sets the column identifiers, updates the data rows (truncating
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* or padding each row with <code>null</code> values) to match the
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* number of columns, and sends a {@link TableModelEvent} to all
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* registered listeners.
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*
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* @param columnIdentifiers the column identifiers.
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*/
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public void setColumnIdentifiers(Vector columnIdentifiers)
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{
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this.columnIdentifiers = columnIdentifiers;
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setColumnCount(columnIdentifiers == null ? 0 : columnIdentifiers.size());
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}
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/**
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* Sets the column identifiers, updates the data rows (truncating
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* or padding each row with <code>null</code> values) to match the
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* number of columns, and sends a {@link TableModelEvent} to all
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* registered listeners.
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*
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* @param columnIdentifiers the column identifiers.
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*/
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public void setColumnIdentifiers(Object[] columnIdentifiers)
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{
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setColumnIdentifiers(convertToVector(columnIdentifiers));
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}
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/**
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* This method is obsolete, use {@link #setRowCount(int)} instead.
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*
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* @param numRows the number of rows.
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*/
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public void setNumRows(int numRows)
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{
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setRowCount(numRows);
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}
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/**
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* Sets the number of rows in the table. If <code>rowCount</code> is less
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* than the current number of rows in the table, rows are discarded.
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* If <code>rowCount</code> is greater than the current number of rows in
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* the table, new (empty) rows are added.
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*
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* @param rowCount the row count.
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*/
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public void setRowCount(int rowCount)
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{
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int existingRowCount = dataVector.size();
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if (rowCount < existingRowCount)
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{
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dataVector.setSize(rowCount);
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fireTableRowsDeleted(rowCount, existingRowCount - 1);
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}
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else
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{
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int rowsToAdd = rowCount - existingRowCount;
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addExtraRows(rowsToAdd, columnIdentifiers.size());
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fireTableRowsInserted(existingRowCount, rowCount - 1);
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}
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}
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/**
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* Sets the number of columns in the table. Existing rows are truncated
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* or padded with <code>null</code> values to match the new column count.
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* A {@link TableModelEvent} is sent to all registered listeners.
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*
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* @param columnCount the column count.
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*/
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public void setColumnCount(int columnCount)
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{
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for (int i = 0; i < dataVector.size(); ++i)
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{
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((Vector) dataVector.get(i)).setSize(columnCount);
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}
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if (columnIdentifiers != null)
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columnIdentifiers.setSize(columnCount);
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fireTableStructureChanged();
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}
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/**
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* Adds a column with the specified name to the table. All cell values
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* for the column are initially set to <code>null</code>.
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*
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* @param columnName the column name (<code>null</code> permitted).
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*/
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public void addColumn(Object columnName)
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{
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addColumn(columnName, (Object[]) null);
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}
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/**
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* Adds a column with the specified name and data values to the table.
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*
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* @param columnName the column name (<code>null</code> permitted).
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* @param columnData the column data.
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*/
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public void addColumn(Object columnName, Vector columnData)
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{
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Object[] dataArray = null;
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if (columnData != null)
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{
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int rowCount = dataVector.size();
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if (columnData.size() < rowCount)
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columnData.setSize(rowCount);
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dataArray = columnData.toArray();
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}
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addColumn(columnName, dataArray);
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}
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/**
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* Adds a column with the specified name and data values to the table.
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*
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* @param columnName the column name (<code>null</code> permitted).
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* @param columnData the column data.
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*/
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public void addColumn(Object columnName, Object[] columnData)
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{
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if (columnData != null)
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{
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// check columnData array for cases where the number of items
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// doesn't match the number of rows in the existing table
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if (columnData.length > dataVector.size())
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{
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int rowsToAdd = columnData.length - dataVector.size();
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addExtraRows(rowsToAdd, columnIdentifiers.size());
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}
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else if (columnData.length < dataVector.size())
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{
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Object[] tmp = new Object[dataVector.size()];
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System.arraycopy(columnData, 0, tmp, 0, columnData.length);
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columnData = tmp;
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}
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}
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for (int i = 0; i < dataVector.size(); ++i)
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{
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((Vector) dataVector.get(i)).add(columnData == null ? null : columnData[i]);
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}
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columnIdentifiers.add(columnName);
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fireTableStructureChanged();
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}
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|
/**
|
383 |
|
|
* Adds a new row containing the specified data to the table and sends a
|
384 |
|
|
* {@link TableModelEvent} to all registered listeners.
|
385 |
|
|
*
|
386 |
|
|
* @param rowData the row data (<code>null</code> permitted).
|
387 |
|
|
*/
|
388 |
|
|
public void addRow(Vector rowData)
|
389 |
|
|
{
|
390 |
|
|
int rowIndex = dataVector.size();
|
391 |
|
|
dataVector.add(rowData);
|
392 |
|
|
newRowsAdded(new TableModelEvent(
|
393 |
|
|
this, rowIndex, rowIndex, -1, TableModelEvent.INSERT)
|
394 |
|
|
);
|
395 |
|
|
}
|
396 |
|
|
|
397 |
|
|
/**
|
398 |
|
|
* Adds a new row containing the specified data to the table and sends a
|
399 |
|
|
* {@link TableModelEvent} to all registered listeners.
|
400 |
|
|
*
|
401 |
|
|
* @param rowData the row data (<code>null</code> permitted).
|
402 |
|
|
*/
|
403 |
|
|
public void addRow(Object[] rowData)
|
404 |
|
|
{
|
405 |
|
|
addRow(convertToVector(rowData));
|
406 |
|
|
}
|
407 |
|
|
|
408 |
|
|
/**
|
409 |
|
|
* Inserts a new row into the table.
|
410 |
|
|
*
|
411 |
|
|
* @param row the row index.
|
412 |
|
|
* @param rowData the row data.
|
413 |
|
|
*/
|
414 |
|
|
public void insertRow(int row, Vector rowData)
|
415 |
|
|
{
|
416 |
|
|
dataVector.add(row, rowData);
|
417 |
|
|
fireTableRowsInserted(row, row);
|
418 |
|
|
}
|
419 |
|
|
|
420 |
|
|
/**
|
421 |
|
|
* Inserts a new row into the table.
|
422 |
|
|
*
|
423 |
|
|
* @param row the row index.
|
424 |
|
|
* @param rowData the row data.
|
425 |
|
|
*/
|
426 |
|
|
public void insertRow(int row, Object[] rowData)
|
427 |
|
|
{
|
428 |
|
|
insertRow(row, convertToVector(rowData));
|
429 |
|
|
}
|
430 |
|
|
|
431 |
|
|
/**
|
432 |
|
|
* Moves the rows from <code>startIndex</code> to <code>endIndex</code>
|
433 |
|
|
* (inclusive) to the specified row.
|
434 |
|
|
*
|
435 |
|
|
* @param startIndex the start row.
|
436 |
|
|
* @param endIndex the end row.
|
437 |
|
|
* @param toIndex the row to move to.
|
438 |
|
|
*/
|
439 |
|
|
public void moveRow(int startIndex, int endIndex, int toIndex)
|
440 |
|
|
{
|
441 |
|
|
Vector removed = new Vector();
|
442 |
|
|
for (int i = endIndex; i >= startIndex; i--)
|
443 |
|
|
{
|
444 |
|
|
removed.add(this.dataVector.remove(i));
|
445 |
|
|
}
|
446 |
|
|
for (int i = 0; i <= endIndex - startIndex; i++)
|
447 |
|
|
{
|
448 |
|
|
dataVector.insertElementAt(removed.get(i), toIndex);
|
449 |
|
|
}
|
450 |
|
|
int firstRow = Math.min(startIndex, toIndex);
|
451 |
|
|
int lastRow = Math.max(endIndex, toIndex + (endIndex - startIndex));
|
452 |
|
|
fireTableRowsUpdated(firstRow, lastRow);
|
453 |
|
|
}
|
454 |
|
|
|
455 |
|
|
/**
|
456 |
|
|
* Removes a row from the table and sends a {@link TableModelEvent} to
|
457 |
|
|
* all registered listeners.
|
458 |
|
|
*
|
459 |
|
|
* @param row the row index.
|
460 |
|
|
*/
|
461 |
|
|
public void removeRow(int row)
|
462 |
|
|
{
|
463 |
|
|
dataVector.remove(row);
|
464 |
|
|
fireTableRowsDeleted(row, row);
|
465 |
|
|
}
|
466 |
|
|
|
467 |
|
|
/**
|
468 |
|
|
* Returns the number of rows in the model.
|
469 |
|
|
*
|
470 |
|
|
* @return The row count.
|
471 |
|
|
*/
|
472 |
|
|
public int getRowCount()
|
473 |
|
|
{
|
474 |
|
|
return dataVector.size();
|
475 |
|
|
}
|
476 |
|
|
|
477 |
|
|
/**
|
478 |
|
|
* Returns the number of columns in the model.
|
479 |
|
|
*
|
480 |
|
|
* @return The column count.
|
481 |
|
|
*/
|
482 |
|
|
public int getColumnCount()
|
483 |
|
|
{
|
484 |
|
|
return columnIdentifiers == null ? 0 : columnIdentifiers.size();
|
485 |
|
|
}
|
486 |
|
|
|
487 |
|
|
/**
|
488 |
|
|
* Get the name of the column. If the column has the column identifier set,
|
489 |
|
|
* the return value is the result of the .toString() method call on that
|
490 |
|
|
* identifier. If the identifier is not explicitly set, the returned value
|
491 |
|
|
* is calculated by {@link AbstractTableModel#getColumnName(int)}.
|
492 |
|
|
*
|
493 |
|
|
* @param column the column index.
|
494 |
|
|
*
|
495 |
|
|
* @return The column name.
|
496 |
|
|
*/
|
497 |
|
|
public String getColumnName(int column)
|
498 |
|
|
{
|
499 |
|
|
String result = "";
|
500 |
|
|
if (columnIdentifiers == null)
|
501 |
|
|
result = super.getColumnName(column);
|
502 |
|
|
else
|
503 |
|
|
{
|
504 |
|
|
if (column < getColumnCount())
|
505 |
|
|
{
|
506 |
|
|
checkSize();
|
507 |
|
|
Object id = columnIdentifiers.get(column);
|
508 |
|
|
if (id != null)
|
509 |
|
|
result = id.toString();
|
510 |
|
|
else
|
511 |
|
|
result = super.getColumnName(column);
|
512 |
|
|
}
|
513 |
|
|
else
|
514 |
|
|
result = super.getColumnName(column);
|
515 |
|
|
}
|
516 |
|
|
return result;
|
517 |
|
|
}
|
518 |
|
|
|
519 |
|
|
/**
|
520 |
|
|
* Returns <code>true</code> if the specified cell can be modified, and
|
521 |
|
|
* <code>false</code> otherwise. For this implementation, the method
|
522 |
|
|
* always returns <code>true</code>.
|
523 |
|
|
*
|
524 |
|
|
* @param row the row index.
|
525 |
|
|
* @param column the column index.
|
526 |
|
|
*
|
527 |
|
|
* @return <code>true</code> in all cases.
|
528 |
|
|
*/
|
529 |
|
|
public boolean isCellEditable(int row, int column)
|
530 |
|
|
{
|
531 |
|
|
return true;
|
532 |
|
|
}
|
533 |
|
|
|
534 |
|
|
/**
|
535 |
|
|
* Returns the value at the specified cell in the table.
|
536 |
|
|
*
|
537 |
|
|
* @param row the row index.
|
538 |
|
|
* @param column the column index.
|
539 |
|
|
*
|
540 |
|
|
* @return The value (<code>Object</code>, possibly <code>null</code>) at
|
541 |
|
|
* the specified cell in the table.
|
542 |
|
|
*/
|
543 |
|
|
public Object getValueAt(int row, int column)
|
544 |
|
|
{
|
545 |
|
|
return ((Vector) dataVector.get(row)).get(column);
|
546 |
|
|
}
|
547 |
|
|
|
548 |
|
|
/**
|
549 |
|
|
* Sets the value for the specified cell in the table and sends a
|
550 |
|
|
* {@link TableModelEvent} to all registered listeners.
|
551 |
|
|
*
|
552 |
|
|
* @param value the value (<code>Object</code>, <code>null</code> permitted).
|
553 |
|
|
* @param row the row index.
|
554 |
|
|
* @param column the column index.
|
555 |
|
|
*/
|
556 |
|
|
public void setValueAt(Object value, int row, int column)
|
557 |
|
|
{
|
558 |
|
|
((Vector) dataVector.get(row)).set(column, value);
|
559 |
|
|
fireTableCellUpdated(row, column);
|
560 |
|
|
}
|
561 |
|
|
|
562 |
|
|
/**
|
563 |
|
|
* Converts the data array to a <code>Vector</code>.
|
564 |
|
|
*
|
565 |
|
|
* @param data the data array (<code>null</code> permitted).
|
566 |
|
|
*
|
567 |
|
|
* @return A vector (or <code>null</code> if the data array
|
568 |
|
|
* is <code>null</code>).
|
569 |
|
|
*/
|
570 |
|
|
protected static Vector convertToVector(Object[] data)
|
571 |
|
|
{
|
572 |
|
|
if (data == null)
|
573 |
|
|
return null;
|
574 |
|
|
Vector vector = new Vector(data.length);
|
575 |
|
|
for (int i = 0; i < data.length; i++)
|
576 |
|
|
vector.add(data[i]);
|
577 |
|
|
return vector;
|
578 |
|
|
}
|
579 |
|
|
|
580 |
|
|
/**
|
581 |
|
|
* Converts the data array to a <code>Vector</code> of rows.
|
582 |
|
|
*
|
583 |
|
|
* @param data the data array (<code>null</code> permitted).
|
584 |
|
|
*
|
585 |
|
|
* @return A vector (or <code>null</code> if the data array
|
586 |
|
|
* is <code>null</code>.
|
587 |
|
|
*/
|
588 |
|
|
protected static Vector convertToVector(Object[][] data)
|
589 |
|
|
{
|
590 |
|
|
if (data == null)
|
591 |
|
|
return null;
|
592 |
|
|
Vector vector = new Vector(data.length);
|
593 |
|
|
for (int i = 0; i < data.length; i++)
|
594 |
|
|
vector.add(convertToVector(data[i]));
|
595 |
|
|
return vector;
|
596 |
|
|
}
|
597 |
|
|
|
598 |
|
|
/**
|
599 |
|
|
* This method adds some rows to <code>dataVector</code>.
|
600 |
|
|
*
|
601 |
|
|
* @param rowsToAdd number of rows to add
|
602 |
|
|
* @param nbColumns size of the added rows
|
603 |
|
|
*/
|
604 |
|
|
private void addExtraRows(int rowsToAdd, int nbColumns)
|
605 |
|
|
{
|
606 |
|
|
for (int i = 0; i < rowsToAdd; i++)
|
607 |
|
|
{
|
608 |
|
|
Vector tmp = new Vector();
|
609 |
|
|
tmp.setSize(columnIdentifiers.size());
|
610 |
|
|
dataVector.add(tmp);
|
611 |
|
|
}
|
612 |
|
|
}
|
613 |
|
|
|
614 |
|
|
/**
|
615 |
|
|
* Checks the real columns/rows sizes against the ones returned by
|
616 |
|
|
* <code>getColumnCount()</code> and <code>getRowCount()</code>.
|
617 |
|
|
* If the supposed one are bigger, then we grow <code>columIdentifiers</code>
|
618 |
|
|
* and <code>dataVector</code> to their expected size.
|
619 |
|
|
*/
|
620 |
|
|
private void checkSize()
|
621 |
|
|
{
|
622 |
|
|
int columnCount = getColumnCount();
|
623 |
|
|
int rowCount = getRowCount();
|
624 |
|
|
|
625 |
|
|
if (columnCount > columnIdentifiers.size())
|
626 |
|
|
columnIdentifiers.setSize(columnCount);
|
627 |
|
|
|
628 |
|
|
if (dataVector != null && rowCount > dataVector.size())
|
629 |
|
|
{
|
630 |
|
|
int rowsToAdd = rowCount - dataVector.size();
|
631 |
|
|
addExtraRows(rowsToAdd, columnCount);
|
632 |
|
|
}
|
633 |
|
|
}
|
634 |
|
|
}
|