de.jaret.util.ui.table.model.simple
Class SimpleColumn

java.lang.Object
  de.jaret.util.ui.table.model.AbstractColumn
      de.jaret.util.ui.table.model.simple.SimpleColumn

All Implemented Interfaces:

IColumn, java.util.Comparator<IRow>

public class SimpleColumn
extends AbstractColumn

Simple implementation of a column for use in the SimpleJaretTableModel.

Version:

$Id: SimpleColumn.java 180 2007-01-07 18:44:01Z olk $

Author:

kliem

Field Summary

Fields inherited from class de.jaret.util.ui.table.model.AbstractColumn

_listeners

Constructor Summary

SimpleColumn(int index, SimpleJaretTableModel model)
Construct a column.

Method Summary

int	compare(IRow o1, IRow o2) Sorting set null < non-null, non comparables are equal.
java.lang.Class<?>	getContentClass() To allow null values as column value and to support cell editing and displaying a column may support this method for supplying the information.
java.lang.String	getHeaderLabel() Return a textual label to be displayed as the column header label.
java.lang.String	getId() Id is used for storing the column width.
java.lang.Object	getValue(IRow row) Retrieve the value of the column for the given row.
void	setHeaderLabel(java.lang.String label) Allow setting of the header label.
void	setValue(IRow row, java.lang.Object value) Set the value of the coloumn for a given row.
boolean	supportsSorting() Check whether the column supports sorting.

Methods inherited from class de.jaret.util.ui.table.model.AbstractColumn

addColumnListener, displayHeader, fireValueChanged, getContentClass, isEditable, isEditable, remColumnListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

SimpleColumn

public SimpleColumn(int index,
                    SimpleJaretTableModel model)

Construct a column.

Parameters:

index - index

model - table model the column is part of

Method Detail

setHeaderLabel

public void setHeaderLabel(java.lang.String label)

Allow setting of the header label.

Parameters:

label - the label

getContentClass

public java.lang.Class<?> getContentClass()

To allow null values as column value and to support cell editing and displaying a column may support this method for supplying the information. Always assume different classes and rely on the object tht is the value.

Returns:

the contained class or null if the information is not available.

getHeaderLabel

public java.lang.String getHeaderLabel()

Return a textual label to be displayed as the column header label.

Returns:

header label

getId

public java.lang.String getId()

Id is used for storing the column width. It has to be unique among all columns if the use of the view state persisting support will be used.

Returns:

unique id.

getValue

public java.lang.Object getValue(IRow row)

Retrieve the value of the column for the given row.

Parameters:

row - the row

Returns:

the column value for the given row.

setValue

public void setValue(IRow row,
                     java.lang.Object value)

Set the value of the coloumn for a given row.

Parameters:

row - the row

value - value to set

supportsSorting

public boolean supportsSorting()

Check whether the column supports sorting.

Returns:

true when sorting is supported.

compare

public int compare(IRow o1,
                   IRow o2)

Sorting set null < non-null, non comparables are equal.