Class SpinnerCellEditor

java.lang.Object

javax.swing.AbstractCellEditor

jmt.framework.gui.table.editors.SpinnerCellEditor

All Implemented Interfaces:

Serializable, CellEditor, TableCellEditor, TableCellRenderer

public class SpinnerCellEditor
extends AbstractCellEditor
implements TableCellEditor, CellEditor, TableCellRenderer

Title: Spinner Table CellViewer/CellEditor

Description: A component to display a Spinner as both a viewer and an editor in a table. Internally caches already allocated editors to avoid creation of too many Spinners. Renderer instance is a single element cached too.

Author:

Leran Chen 05/08/2021

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected static SpinnerCellEditor	renderer
protected JSpinner	spinner

Fields inherited from class AbstractCellEditor

changeEvent, listenerList

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SpinnerCellEditor(Integer num, Integer maxvalue)	Creates a new Spinner editor or renderer basing on given number

Method Summary

Modifier and Type	Method	Description
void	addChangeListener(ChangeListener changeListener)
Object	getCellEditorValue()	Returns the value contained in the editor.
static SpinnerCellEditor	getEditorInstance(Integer num)	Returns a new instance of CellEditor that will display number in a Spinner
static SpinnerCellEditor	getEditorInstance(Integer num, Integer maxvalue)
static SpinnerCellEditor	getRendererInstance()	Returns a new instance of CellRenderer that will display current number in a Spinner
Component	getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)	Sets an initial value for the editor.
Component	getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)	Returns the component used for drawing the cell.

Methods inherited from class AbstractCellEditor

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

Methods inherited from class Object

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

Methods inherited from interface CellEditor

addCellEditorListener, cancelCellEditing, isCellEditable, removeCellEditorListener, shouldSelectCell, stopCellEditing

Field Details

spinner

protected JSpinner spinner

renderer

protected static SpinnerCellEditor renderer

Constructor Details

SpinnerCellEditor

protected SpinnerCellEditor(Integer num,
 Integer maxvalue)

Creates a new Spinner editor or renderer basing on given number

Parameters:

num - number to be shown on the Spinner

Method Details

getEditorInstance

public static SpinnerCellEditor getEditorInstance(Integer num)

Returns a new instance of CellEditor that will display number in a Spinner

Parameters:

num - number to be displayed from the Spinner

Returns:

CellEditor created

getEditorInstance

public static SpinnerCellEditor getEditorInstance(Integer num,
 Integer maxvalue)

getRendererInstance

public static SpinnerCellEditor getRendererInstance()

Returns a new instance of CellRenderer that will display current number in a Spinner

Returns:

cached CellRenderer

getCellEditorValue

public Object getCellEditorValue()

Returns the value contained in the editor.

Specified by:

getCellEditorValue in interface CellEditor

Returns:

the value contained in the editor

getTableCellEditorComponent

public Component getTableCellEditorComponent(JTable table,
 Object value,
 boolean isSelected,
 int row,
 int column)

Sets an initial value for the editor. This will cause the editor to stopEditing and lose any partially edited value if the editor is editing when this method is called.

Returns the component that should be added to the client's Component hierarchy. Once installed in the client's hierarchy this component will then be able to draw and receive user input.

Specified by:

getTableCellEditorComponent in interface TableCellEditor

Parameters:

table - the JTable that is asking the editor to edit; can be null

value - the value of the cell to be edited; it is up to the specific editor to interpret and draw the value. For example, if value is the string "true", it could be rendered as a string or it could be rendered as a check box that is checked. null is a valid value

isSelected - true if the cell is to be rendered with highlighting

row - the row of the cell being edited

column - the column of the cell being edited

Returns:

the component for editing

addChangeListener

public void addChangeListener(ChangeListener changeListener)

getTableCellRendererComponent

public Component getTableCellRendererComponent(JTable table,
 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.

Specified by:

getTableCellRendererComponent in interface TableCellRenderer

Parameters:

table - the JTable that is asking the renderer to draw; can be null

value - the value of the cell to be rendered. It is up to the specific renderer to interpret and draw the value. For example, if value is the string "true", it could be rendered as a string or it could be rendered as a check box that is checked. null is a valid value

isSelected - true if the cell is to be rendered with the selection highlighted; false otherwise

hasFocus - if true, render cell appropriately. For example, put a special border on the cell, if the cell can be edited, render in the color used to indicate editing

row - the row index of the cell being drawn. When drawing the header, the value of row is -1

column - the column index of the cell being drawn