jview
Class MyTableSorter

java.lang.Object
  javax.swing.table.AbstractTableModel
      jview.MyTableSorter

All Implemented Interfaces:

Serializable, TableModel

public class MyTableSorter
extends AbstractTableModel

This class is based on the TableSorter class provided by Sun. The only changes apply to the mouse-click handling, default action is to have no mouse listener in it.

TableSorter is a decorator for TableModels; adding sorting functionality to a supplied TableModel. TableSorter does not store or copy the data in its TableModel; instead it maintains a map from the row indexes of the view to the row indexes of the model. As requests are made of the sorter (like getValueAt(row, col)) they are passed to the underlying model after the row numbers have been translated via the internal mapping array. This way, the TableSorter appears to hold another copy of the table with the rows in a different order.

TableSorter registers itself as a listener to the underlying model, just as the JTable itself would. Events recieved from the model are examined, sometimes manipulated (typically widened), and then passed on to the TableSorter's listeners (typically the JTable). If a change to the model has invalidated the order of TableSorter's rows, a note of this is made and the sorter will resort the rows the next time a value is requested.

When the tableHeader property is set, either by using the setTableHeader() method or the two argument constructor, the table header may be used as a complete UI for TableSorter. The default renderer of the tableHeader is decorated with a renderer that indicates the sorting status of each column. In addition, a mouse listener is installed with the following behavior:

• Mouse-click: Clears the sorting status of all other columns and advances the sorting status of that column through three values: {NOT_SORTED, ASCENDING, DESCENDING} (then back to NOT_SORTED again).
• SHIFT-mouse-click: Clears the sorting status of all other columns and cycles the sorting status of the column through the same three values, in the opposite order: {NOT_SORTED, DESCENDING, ASCENDING}.
• CONTROL-mouse-click and CONTROL-SHIFT-mouse-click: as above except that the changes to the column do not cancel the statuses of columns that are already sorting - giving a way to initiate a compound sort.

This is a long overdue rewrite of a class of the same name that first appeared in the swing table demos in 1997.

See Also:

Serialized Form

Nested Class Summary

private static class	MyTableSorter.Arrow
private static class	MyTableSorter.Directive
private class	MyTableSorter.Row
private class	MyTableSorter.SortableHeaderRenderer
private class	MyTableSorter.TableModelHandler

Field Summary

static int	ASCENDING
private Map	columnComparators
static Comparator	COMPARABLE_COMAPRATOR
static int	DESCENDING
private static MyTableSorter.Directive	EMPTY_DIRECTIVE
static Comparator	LEXICAL_COMPARATOR
private int[]	modelToView
private MouseListener	mouseListener
static int	NOT_SORTED
private List	sortingColumns
private JTableHeader	tableHeader
protected TableModel	tableModel
private TableModelListener	tableModelListener
private MyTableSorter.Row[]	viewToModel

Fields inherited from class javax.swing.table.AbstractTableModel

listenerList

Constructor Summary

MyTableSorter()

MyTableSorter(TableModel tableModel)

MyTableSorter(TableModel tableModel, JTableHeader tableHeader)

Method Summary

void	addMouseListener(MouseListener mymouse)
private void	cancelSorting()
private void	clearSortingState()
Class	getColumnClass(int column)
int	getColumnCount()
String	getColumnName(int column)
protected Comparator	getComparator(int column)
private MyTableSorter.Directive	getDirective(int column)
protected Icon	getHeaderRendererIcon(int column, int size)
private int[]	getModelToView()
int	getRowCount()
int	getSortingStatus(int column)
JTableHeader	getTableHeader()
TableModel	getTableModel()
Object	getValueAt(int row, int column)
private MyTableSorter.Row[]	getViewToModel()
boolean	isCellEditable(int row, int column)
boolean	isSorting()
int	modelIndex(int viewIndex)
void	setColumnComparator(Class type, Comparator comparator)
void	setSortingStatus(int column, int status)
void	setTableHeader(JTableHeader tableHeader)
void	setTableModel(TableModel tableModel)
void	setValueAt(Object aValue, int row, int column)
private void	sortingStatusChanged()

Methods inherited from class javax.swing.table.AbstractTableModel

addTableModelListener, findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getListeners, getTableModelListeners, removeTableModelListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

tableModel

protected TableModel tableModel

DESCENDING

public static final int DESCENDING

See Also:

Constant Field Values

NOT_SORTED

public static final int NOT_SORTED

See Also:

Constant Field Values

ASCENDING

public static final int ASCENDING

See Also:

Constant Field Values

EMPTY_DIRECTIVE

private static MyTableSorter.Directive EMPTY_DIRECTIVE

COMPARABLE_COMAPRATOR

public static final Comparator COMPARABLE_COMAPRATOR

LEXICAL_COMPARATOR

public static final Comparator LEXICAL_COMPARATOR

viewToModel

private MyTableSorter.Row[] viewToModel

modelToView

private int[] modelToView

tableHeader

private JTableHeader tableHeader

mouseListener

private MouseListener mouseListener

tableModelListener

private TableModelListener tableModelListener

columnComparators

private Map columnComparators

sortingColumns

private List sortingColumns

Constructor Detail

MyTableSorter

public MyTableSorter()

MyTableSorter

public MyTableSorter(TableModel tableModel)

MyTableSorter

public MyTableSorter(TableModel tableModel,
                     JTableHeader tableHeader)

Method Detail

addMouseListener

public void addMouseListener(MouseListener mymouse)

clearSortingState

private void clearSortingState()

getTableModel

public TableModel getTableModel()

setTableModel

public void setTableModel(TableModel tableModel)

getTableHeader

public JTableHeader getTableHeader()

setTableHeader

public void setTableHeader(JTableHeader tableHeader)

isSorting

public boolean isSorting()

getDirective

private MyTableSorter.Directive getDirective(int column)

getSortingStatus

public int getSortingStatus(int column)

sortingStatusChanged

private void sortingStatusChanged()

setSortingStatus

public void setSortingStatus(int column,
                             int status)

getHeaderRendererIcon

protected Icon getHeaderRendererIcon(int column,
                                     int size)

cancelSorting

private void cancelSorting()

setColumnComparator

public void setColumnComparator(Class type,
                                Comparator comparator)

getComparator

protected Comparator getComparator(int column)

getViewToModel

private MyTableSorter.Row[] getViewToModel()

modelIndex

public int modelIndex(int viewIndex)

getModelToView

private int[] getModelToView()

getRowCount

public int getRowCount()

getColumnCount

public int getColumnCount()

getColumnName

public String getColumnName(int column)

Specified by:

getColumnName in interface TableModel

Overrides:

getColumnName in class AbstractTableModel

getColumnClass

public Class getColumnClass(int column)

Specified by:

getColumnClass in interface TableModel

Overrides:

getColumnClass in class AbstractTableModel

isCellEditable

public boolean isCellEditable(int row,
                              int column)

Specified by:

isCellEditable in interface TableModel

Overrides:

isCellEditable in class AbstractTableModel

getValueAt

public Object getValueAt(int row,
                         int column)

setValueAt

public void setValueAt(Object aValue,
                       int row,
                       int column)

Specified by:

setValueAt in interface TableModel

Overrides:

setValueAt in class AbstractTableModel