ucar.ui.table

Class ColumnWidthsResizer

java.lang.Object

ucar.ui.table.ColumnWidthsResizer

All Implemented Interfaces:

java.util.EventListener, javax.swing.event.TableColumnModelListener, javax.swing.event.TableModelListener

public class ColumnWidthsResizer
extends java.lang.Object
implements javax.swing.event.TableModelListener, javax.swing.event.TableColumnModelListener

A listener that sets the preferred widths of a JTable's columns such that they're just big enough to display all of their contents without truncation. Expected usage:

 JTable table = new JTable(...);
 ColumnWidthsResizer listener = new ColumnWidthsResizer(table);
 table.getModel().addTableModelListener(listener);  // Respond to row and data changes.
 table.getColumnModel().addColumnModelListener(listener);  // Respond to column changes.
 

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_FULL_SCAN_CUTOFF The default maximum number of table rows for which a full scan will be performed.

Constructor Summary

Constructors

Constructor and Description
ColumnWidthsResizer(javax.swing.JTable table) Creates a listener that resizes table's column widths when its data and/or structure changes.
ColumnWidthsResizer(javax.swing.JTable table, int fullScanCutoff) Creates a listener that resizes table's column widths when its data and/or structure changes.

Method Summary

Modifier and Type	Method and Description
void	columnAdded(javax.swing.event.TableColumnModelEvent e)
void	columnMarginChanged(javax.swing.event.ChangeEvent e)
void	columnMoved(javax.swing.event.TableColumnModelEvent e)
void	columnRemoved(javax.swing.event.TableColumnModelEvent e)
void	columnSelectionChanged(javax.swing.event.ListSelectionEvent e)
static int	getCellWidth(javax.swing.JTable table, int rowViewIndex, int colViewIndex)
static void	resize(javax.swing.JTable table)
static void	resize(javax.swing.JTable table, boolean doFullScan)
static void	resize(javax.swing.JTable table, int colViewIndex)
static void	resize(javax.swing.JTable table, int colViewIndex, boolean doFullScan)
void	tableChanged(javax.swing.event.TableModelEvent e)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_FULL_SCAN_CUTOFF

public static final int DEFAULT_FULL_SCAN_CUTOFF

The default maximum number of table rows for which a full scan will be performed. If a table has more rows than this, only a partial scan will be done.

See Also:

Constant Field Values

Constructor Detail

ColumnWidthsResizer

public ColumnWidthsResizer(javax.swing.JTable table)

Creates a listener that resizes table's column widths when its data and/or structure changes.

If table.getRowCount() <= DEFAULT_FULL_SCAN_CUTOFF, a full scan will be performed. That is, every row will be examined to determine the optimal column widths. Otherwise, a partial scan will be performed. That is, only the header and the first, middle, and last rows will be examined to determine the approximate column widths.

Parameters:

table - a table.

ColumnWidthsResizer

public ColumnWidthsResizer(javax.swing.JTable table,
                           int fullScanCutoff)

Creates a listener that resizes table's column widths when its data and/or structure changes.

Parameters:

table - a table.

fullScanCutoff - true if a full scan should be performed; false if a partial scan should be done instead.

Method Detail

tableChanged

public void tableChanged(javax.swing.event.TableModelEvent e)

Specified by:

tableChanged in interface javax.swing.event.TableModelListener

columnAdded

public void columnAdded(javax.swing.event.TableColumnModelEvent e)

Specified by:

columnAdded in interface javax.swing.event.TableColumnModelListener

columnRemoved

public void columnRemoved(javax.swing.event.TableColumnModelEvent e)

Specified by:

columnRemoved in interface javax.swing.event.TableColumnModelListener

columnMoved

public void columnMoved(javax.swing.event.TableColumnModelEvent e)

Specified by:

columnMoved in interface javax.swing.event.TableColumnModelListener

columnMarginChanged

public void columnMarginChanged(javax.swing.event.ChangeEvent e)

Specified by:

columnMarginChanged in interface javax.swing.event.TableColumnModelListener

columnSelectionChanged

public void columnSelectionChanged(javax.swing.event.ListSelectionEvent e)

Specified by:

columnSelectionChanged in interface javax.swing.event.TableColumnModelListener

resize

public static void resize(javax.swing.JTable table)

resize

public static void resize(javax.swing.JTable table,
                          boolean doFullScan)

resize

public static void resize(javax.swing.JTable table,
                          int colViewIndex)

resize

public static void resize(javax.swing.JTable table,
                          int colViewIndex,
                          boolean doFullScan)

getCellWidth

public static int getCellWidth(javax.swing.JTable table,
                               int rowViewIndex,
                               int colViewIndex)