meka.gui.core

Class JTableHelper

java.lang.Object

meka.gui.core.JTableHelper

public class JTableHelper
extends Object

A helper class for JTable, e.g. calculating the optimal colwidth.

Version:

$Revision: 4584 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

JTableHelper

Field Summary

Fields

Modifier and Type	Field and Description
protected JTable	m_Table the table to work with.
static int	MAX_ROWS the maximum number of rows to use for calculation.

Constructor Summary

Constructors

Constructor and Description
JTableHelper(JTable table) initializes the object.

Method Summary

Modifier and Type	Method and Description
int	calcColumnWidth(int col) calcs the optimal column width of the given column.
static int	calcColumnWidth(JTable table, int col) Calculates the optimal width for the column of the given table.
int	calcHeaderWidth(int col) calcs the optimal header width of the given column.
static int	calcHeaderWidth(JTable table, int col) Calculates the optimal width for the header of the given table.
JTable	getJTable() returns the JTable.
void	scrollToVisible(int row, int col) Assumes table is contained in a JScrollPane.
static void	scrollToVisible(JTable table, int row, int col) Assumes table is contained in a JScrollPane.
void	setOptimalColumnWidth() sets the optimal column width for all columns.
void	setOptimalColumnWidth(int col) sets the optimal column width for the given column.
static void	setOptimalColumnWidth(JTable table) sets the optimal column width for alls column if the given table.
static void	setOptimalColumnWidth(JTable table, int col) sets the optimal column width for the given column.
void	setOptimalHeaderWidth() sets the optimal header width for all columns.
void	setOptimalHeaderWidth(int col) sets the optimal header width for the given column.
static void	setOptimalHeaderWidth(JTable table) sets the optimal header width for alls column if the given table.
static void	setOptimalHeaderWidth(JTable table, int col) sets the optimal header width for the given column.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_ROWS

public static final int MAX_ROWS

the maximum number of rows to use for calculation.

See Also:

Constant Field Values

m_Table

protected JTable m_Table

the table to work with.

Constructor Detail

JTableHelper

public JTableHelper(JTable table)

initializes the object.

Parameters:

table - the table to work on

Method Detail

getJTable

public JTable getJTable()

returns the JTable.

Returns:

the table to work on

calcColumnWidth

public int calcColumnWidth(int col)

calcs the optimal column width of the given column.

Parameters:

col - the column index

Returns:

the optimal width

calcColumnWidth

public static int calcColumnWidth(JTable table,
                                  int col)

Calculates the optimal width for the column of the given table. The calculation is based on the preferred width of the header and cell renderer.
Taken from the newsgroup de.comp.lang.java with some modifications.
Taken from FOPPS/EnhancedTable - http://fopps.sourceforge.net/

Parameters:

table - the table to calculate the column width

col - the column to calculate the widths

Returns:

the width, -1 if error

calcHeaderWidth

public int calcHeaderWidth(int col)

calcs the optimal header width of the given column.

Parameters:

col - the column index

Returns:

the optimal width

calcHeaderWidth

public static int calcHeaderWidth(JTable table,
                                  int col)

Calculates the optimal width for the header of the given table. The calculation is based on the preferred width of the header renderer.

Parameters:

table - the table to calculate the column width

col - the column to calculate the widths

Returns:

the width, -1 if error

setOptimalColumnWidth

public void setOptimalColumnWidth(int col)

sets the optimal column width for the given column.

Parameters:

col - the column index

setOptimalColumnWidth

public static void setOptimalColumnWidth(JTable table,
                                         int col)

sets the optimal column width for the given column.

Parameters:

table - the table to work on

col - the column index

setOptimalColumnWidth

public void setOptimalColumnWidth()

sets the optimal column width for all columns.

setOptimalColumnWidth

public static void setOptimalColumnWidth(JTable table)

sets the optimal column width for alls column if the given table.

Parameters:

table - the table to work on

setOptimalHeaderWidth

public void setOptimalHeaderWidth(int col)

sets the optimal header width for the given column.

Parameters:

col - the column index

setOptimalHeaderWidth

public static void setOptimalHeaderWidth(JTable table,
                                         int col)

sets the optimal header width for the given column.

Parameters:

table - the table to work on

col - the column index

setOptimalHeaderWidth

public void setOptimalHeaderWidth()

sets the optimal header width for all columns.

setOptimalHeaderWidth

public static void setOptimalHeaderWidth(JTable table)

sets the optimal header width for alls column if the given table.

Parameters:

table - the table to work with

scrollToVisible

public void scrollToVisible(int row,
                            int col)

Assumes table is contained in a JScrollPane. Scrolls the cell (rowIndex, vColIndex) so that it is visible within the viewport.

Parameters:

row - the row index

col - the column index

scrollToVisible

public static void scrollToVisible(JTable table,
                                   int row,
                                   int col)

Assumes table is contained in a JScrollPane. Scrolls the cell (rowIndex, vColIndex) so that it is visible within the viewport.

Parameters:

table - the table to work with

row - the row index

col - the column index