prajna.gui

Class FloatCellEditor

java.lang.Object

javax.swing.AbstractCellEditor

prajna.gui.FloatCellEditor

All Implemented Interfaces:

java.io.Serializable, java.util.EventListener, javax.swing.CellEditor, javax.swing.event.ChangeListener, javax.swing.table.TableCellEditor, javax.swing.table.TableCellRenderer

public class FloatCellEditor
extends javax.swing.AbstractCellEditor
implements javax.swing.table.TableCellEditor, javax.swing.table.TableCellRenderer, javax.swing.event.ChangeListener

This cell editor provides the means to edit and display table cells representing floating point values. The editing is handled with a JSlider, and the values range from 0.0 - 1.0. For convenience, this editor also implements TableCellRenderer, so that both display and editing can be handled with this editor.

Author:

Edward Swing

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.AbstractCellEditor

changeEvent, listenerList

Constructor Summary

Constructors

Constructor and Description
FloatCellEditor()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	getCellEditorValue() Get the current value of the cell being edited.
java.awt.Component	getTableCellEditorComponent(javax.swing.JTable table, java.lang.Object value, boolean isSelected, int row, int column) Set an initial value for the editor, and get the component used to render the table cell editor.
java.awt.Component	getTableCellRendererComponent(javax.swing.JTable table, java.lang.Object value, boolean isSelected, boolean hasFocus, int row, int column) Returns the component used for drawing the cell.
void	stateChanged(javax.swing.event.ChangeEvent evt) Handle the event when the slider value changes.

Methods inherited from class javax.swing.AbstractCellEditor

addCellEditorListener, cancelCellEditing, fireEditingCanceled, fireEditingStopped, getCellEditorListeners, isCellEditable, removeCellEditorListener, shouldSelectCell, stopCellEditing

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.swing.CellEditor

addCellEditorListener, cancelCellEditing, isCellEditable, removeCellEditorListener, shouldSelectCell, stopCellEditing

Constructor Detail

FloatCellEditor

public FloatCellEditor()

Method Detail

getCellEditorValue

public java.lang.Object getCellEditorValue()

Get the current value of the cell being edited. This returns the current value of the slider

Specified by:

getCellEditorValue in interface javax.swing.CellEditor

Returns:

the current float value

getTableCellEditorComponent

public java.awt.Component getTableCellEditorComponent(javax.swing.JTable table,
                                             java.lang.Object value,
                                             boolean isSelected,
                                             int row,
                                             int column)

Set an initial value for the editor, and get the component used to render the table cell editor. For this editor, a simple JSlider is returned. *

Specified by:

getTableCellEditorComponent in interface javax.swing.table.TableCellEditor

Parameters:

table - The table being edited

value - the value of the cell to be edited

isSelected - true if the cell should be highlighted

row - the cell row

column - the cell column

Returns:

the component for the editor, which is a JSlider

getTableCellRendererComponent

public java.awt.Component getTableCellRendererComponent(javax.swing.JTable table,
                                               java.lang.Object value,
                                               boolean isSelected,
                                               boolean hasFocus,
                                               int row,
                                               int column)

Returns the component used for drawing the cell. This method is used to configure the renderer appropriately before drawing. This method returns a JSlider.

Specified by:

getTableCellRendererComponent in interface javax.swing.table.TableCellRenderer

Parameters:

table - the table being drawn

value - the value of the cell to be rendered

isSelected - true if the cell should be highlighted

hasFocus - true whether the cell has focus

row - the cell row

column - the cell column

Returns:

the component for the editor, which is a JSlinder

stateChanged

public void stateChanged(javax.swing.event.ChangeEvent evt)

Handle the event when the slider value changes. This method is visible as an implementation side effect.

Specified by:

stateChanged in interface javax.swing.event.ChangeListener

Parameters:

evt - the ChangeEvent from the slider