Package io.github.jonestimd.swing.table

Class ValueClassColumnWidthCalculator

java.lang.Object

io.github.jonestimd.swing.table.ValueClassColumnWidthCalculator

All Implemented Interfaces:

ColumnWidthCalculator

public class ValueClassColumnWidthCalculator
extends java.lang.Object
implements ColumnWidthCalculator

Calculates a column's width based on the value returned by JTable.getColumnClass(int). Intended for use with a table model that overrides AbstractTableModel.getColumnClass(int) because that method always returns Object.class. By default, the column cell renderer is used with the value specified below to determine the width.

Column Class	Renderer Value	Fixed Width
Boolean	Column header	true
Number	Configuration prototype	true
Enum	Longest toString() value	true
Color	Square	true
other	Column header	false

See Also:

BeanListTableModel

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Map<java.lang.Class<?>,java.util.function.ToIntFunction<javax.swing.table.TableColumn>>	calculatorMap
protected ColumnConfiguration	configuration
protected io.github.jonestimd.swing.table.ValueClassColumnWidthCalculator.WidthCalculator	headerWidthCalculator
protected javax.swing.JTable	table

Constructor Summary

Constructors

Constructor	Description
ValueClassColumnWidthCalculator(javax.swing.JTable table, ColumnConfiguration configuration)

Method Summary

Modifier and Type	Method	Description
boolean	isFixedWidth(javax.swing.table.TableColumn column)	The default implementation returns true if a width calculator has been set for the column.
int	preferredWidth(javax.swing.table.TableColumn column)	Calculate the preferred width of a column.
protected void	setDefaultCalculators()
void	setWidthCalculator(java.lang.Class<?> valueType, java.util.function.Function<javax.swing.table.TableColumn,?> getPrototype)	Use the header width for a prototype value as the column width.
void	setWidthCalculator(java.lang.Class<?> valueType, java.util.function.Function<javax.swing.table.TableColumn,?> getPrototype, java.util.function.ToIntFunction<java.awt.Component> getWidth)	Calculate the column width using the header renderer for a prototype value.
void	setWidthCalculator(java.lang.Class<?> valueType, java.util.function.ToIntFunction<javax.swing.table.TableColumn> calculator)	Set the calculator for a column value type.

Methods inherited from class java.lang.Object

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

Field Detail

headerWidthCalculator

protected final io.github.jonestimd.swing.table.ValueClassColumnWidthCalculator.WidthCalculator headerWidthCalculator

calculatorMap

protected final java.util.Map<java.lang.Class<?>,java.util.function.ToIntFunction<javax.swing.table.TableColumn>> calculatorMap

table

protected final javax.swing.JTable table

configuration

protected final ColumnConfiguration configuration

Constructor Detail

ValueClassColumnWidthCalculator

public ValueClassColumnWidthCalculator(javax.swing.JTable table,
                                       ColumnConfiguration configuration)

Method Detail

setDefaultCalculators

protected void setDefaultCalculators()

setWidthCalculator

public void setWidthCalculator(java.lang.Class<?> valueType,
                               java.util.function.ToIntFunction<javax.swing.table.TableColumn> calculator)

Set the calculator for a column value type.

setWidthCalculator

public void setWidthCalculator(java.lang.Class<?> valueType,
                               java.util.function.Function<javax.swing.table.TableColumn,?> getPrototype)

Use the header width for a prototype value as the column width.

Parameters:

getPrototype - a function that returns the prototype value for a column

setWidthCalculator

public void setWidthCalculator(java.lang.Class<?> valueType,
                               java.util.function.Function<javax.swing.table.TableColumn,?> getPrototype,
                               java.util.function.ToIntFunction<java.awt.Component> getWidth)

Calculate the column width using the header renderer for a prototype value.

Parameters:

getPrototype - a function that returns the prototype value for a column

getWidth - a function that returns the width for the column given the header renderer

isFixedWidth

public boolean isFixedWidth(javax.swing.table.TableColumn column)

The default implementation returns true if a width calculator has been set for the column.

Specified by:

isFixedWidth in interface ColumnWidthCalculator

Returns:

true if the column's min, max and preferred widths should all be initialized to the value returned by ColumnWidthCalculator.preferredWidth(TableColumn)

preferredWidth

public int preferredWidth(javax.swing.table.TableColumn column)

Description copied from interface: ColumnWidthCalculator

Calculate the preferred width of a column.

Specified by:

preferredWidth in interface ColumnWidthCalculator

Parameters:

column - the table column

Returns:

the preferred width of the column