mirror of git://gcc.gnu.org/git/gcc.git
304 lines
9.1 KiB
Java
304 lines
9.1 KiB
Java
/* AbstractTableModel.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 gnu.java.lang.CPStringBuilder;
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import java.io.Serializable;
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import java.util.EventListener;
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import javax.swing.event.EventListenerList;
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import javax.swing.event.TableModelEvent;
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import javax.swing.event.TableModelListener;
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/**
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* A base class that can be used to create implementations of the
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* {@link TableModel} interface.
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*
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* @author Andrew Selkirk
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*/
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public abstract class AbstractTableModel implements TableModel, Serializable
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{
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static final long serialVersionUID = -5798593159423650347L;
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/**
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* Storage for the listeners registered with this model.
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*/
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protected EventListenerList listenerList = new EventListenerList();
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/**
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* Creates a default instance.
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*/
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public AbstractTableModel()
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{
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// no setup required here
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}
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/**
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* Returns the name of the specified column. This method generates default
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* names in a sequence (starting with column 0): A, B, C, ..., Z, AA, AB,
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* AC, ..., AZ, BA, BB, BC, and so on. Subclasses may override this method
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* to allow column names to be specified on some other basis.
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*
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* @param columnIndex the column index.
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*
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* @return The name of the column.
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*/
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public String getColumnName(int columnIndex)
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{
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CPStringBuilder buffer = new CPStringBuilder();
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while (columnIndex >= 0)
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{
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buffer.insert(0, (char) ('A' + columnIndex % 26));
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columnIndex = columnIndex / 26 - 1;
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}
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return buffer.toString();
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}
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/**
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* Return the index of the specified column, or <code>-1</code> if there is
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* no column with the specified name.
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*
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* @param columnName the name of the column (<code>null</code> not permitted).
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*
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* @return The index of the column, -1 if not found.
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*
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* @see #getColumnName(int)
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* @throws NullPointerException if <code>columnName</code> is
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* <code>null</code>.
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*/
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public int findColumn(String columnName)
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{
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int count = getColumnCount();
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for (int index = 0; index < count; index++)
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{
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String name = getColumnName(index);
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if (columnName.equals(name))
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return index;
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}
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// Unable to locate.
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return -1;
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}
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/**
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* Returns the <code>Class</code> for all <code>Object</code> instances
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* in the specified column.
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*
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* @param columnIndex the column index.
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*
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* @return The class.
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*/
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public Class<?> getColumnClass(int columnIndex)
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{
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return Object.class;
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}
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/**
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* Returns <code>true</code> if the specified cell is editable, and
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* <code>false</code> if it is not. This implementation returns
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* <code>false</code> for all arguments, subclasses should override the
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* method if necessary.
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*
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* @param rowIndex the row index of the cell.
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* @param columnIndex the column index of the cell.
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*
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* @return <code>false</code>.
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*/
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public boolean isCellEditable(int rowIndex, int columnIndex)
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{
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return false;
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}
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/**
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* Sets the value of the given cell. This implementation ignores all
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* arguments and does nothing, subclasses should override the
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* method if necessary.
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*
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* @param value the new value (<code>null</code> permitted).
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* @param rowIndex the row index of the cell.
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* @param columnIndex the column index of the cell.
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*/
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public void setValueAt(Object value, int rowIndex, int columnIndex)
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{
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// Do nothing...
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}
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/**
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* Adds a listener to the table model. The listener will receive notification
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* of all changes to the table model.
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*
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* @param listener the listener.
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*/
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public void addTableModelListener(TableModelListener listener)
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{
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listenerList.add(TableModelListener.class, listener);
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}
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/**
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* Removes a listener from the table model so that it will no longer receive
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* notification of changes to the table model.
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*
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* @param listener the listener to remove.
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*/
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public void removeTableModelListener(TableModelListener listener)
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{
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listenerList.remove(TableModelListener.class, listener);
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}
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/**
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* Returns an array containing the listeners that have been added to the
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* table model.
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*
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* @return Array of {@link TableModelListener} objects.
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*
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* @since 1.4
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*/
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public TableModelListener[] getTableModelListeners()
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{
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return (TableModelListener[])
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listenerList.getListeners(TableModelListener.class);
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that the table data has changed.
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*/
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public void fireTableDataChanged()
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{
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fireTableChanged(new TableModelEvent(this, 0, Integer.MAX_VALUE));
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that the table structure has changed.
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*/
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public void fireTableStructureChanged()
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{
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fireTableChanged(new TableModelEvent(this, TableModelEvent.HEADER_ROW));
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that some rows have been inserted into the model.
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*
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* @param firstRow the index of the first row.
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* @param lastRow the index of the last row.
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*/
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public void fireTableRowsInserted(int firstRow, int lastRow)
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{
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fireTableChanged(new TableModelEvent(this, firstRow, lastRow,
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TableModelEvent.ALL_COLUMNS,
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TableModelEvent.INSERT));
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that some rows have been updated.
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*
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* @param firstRow the index of the first row.
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* @param lastRow the index of the last row.
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*/
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public void fireTableRowsUpdated(int firstRow, int lastRow)
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{
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fireTableChanged(new TableModelEvent(this, firstRow, lastRow,
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TableModelEvent.ALL_COLUMNS,
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TableModelEvent.UPDATE));
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that some rows have been deleted from the model.
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*
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* @param firstRow the index of the first row.
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* @param lastRow the index of the last row.
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*/
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public void fireTableRowsDeleted(int firstRow, int lastRow)
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{
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fireTableChanged(new TableModelEvent(this, firstRow, lastRow,
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TableModelEvent.ALL_COLUMNS,
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TableModelEvent.DELETE));
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}
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/**
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* Sends a {@link TableModelEvent} to all registered listeners to inform
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* them that a single cell has been updated.
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*
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* @param row the row index.
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* @param column the column index.
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*/
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public void fireTableCellUpdated(int row, int column)
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{
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fireTableChanged(new TableModelEvent(this, row, row, column));
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}
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/**
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* Sends the specified event to all registered listeners.
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*
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* @param event the event to send.
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*/
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public void fireTableChanged(TableModelEvent event)
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{
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int index;
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TableModelListener listener;
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Object[] list = listenerList.getListenerList();
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for (index = 0; index < list.length; index += 2)
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{
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listener = (TableModelListener) list [index + 1];
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listener.tableChanged(event);
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}
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}
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/**
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* Returns an array of listeners of the given type that are registered with
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* this model.
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*
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* @param listenerType the listener class.
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*
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* @return An array of listeners (possibly empty).
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*/
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public <T extends EventListener> T[] getListeners(Class<T> listenerType)
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{
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return listenerList.getListeners(listenerType);
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}
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}
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