weka.gui.arffviewer

Class ArffTableModel

java.lang.Object

weka.gui.arffviewer.ArffTableModel

All Implemented Interfaces:

javax.swing.table.TableModel, Undoable

public class ArffTableModel
extends java.lang.Object
implements javax.swing.table.TableModel, Undoable

The model for the Arff-Viewer.

Version:

$Revision: 9014 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor and Description
ArffTableModel(Instances data) initializes the model with the given data
ArffTableModel(java.lang.String filename) initializes the object and loads the given file

Method Summary

Modifier and Type	Method and Description
void	addTableModelListener(javax.swing.event.TableModelListener l) adds a listener to the list that is notified each time a change to data model occurs
void	addUndoPoint() adds an undo point to the undo history, if the undo support is enabled
void	attributeAsClassAt(int columnIndex) sets the attribute at the given col index as the new class attribute, i.e.
boolean	canUndo() returns whether an undo is possible, i.e.
void	clearUndo() removes the undo history
void	deleteAttributeAt(int columnIndex) deletes the attribute at the given col index.
void	deleteAttributeAt(int columnIndex, boolean notify) deletes the attribute at the given col index
void	deleteAttributes(int[] columnIndices) deletes the attributes at the given indices
void	deleteInstanceAt(int rowIndex) deletes the instance at the given index
void	deleteInstanceAt(int rowIndex, boolean notify) deletes the instance at the given index
void	deleteInstances(int[] rowIndices) deletes the instances at the given positions
Attribute	getAttributeAt(int columnIndex) returns the attribute at the given index, can be NULL if not an attribute column
int	getAttributeColumn(java.lang.String name) returns the column of the given attribute name, -1 if not found
java.lang.Class	getColumnClass(int columnIndex) returns the most specific superclass for all the cell values in the column (always String)
int	getColumnCount() returns the number of columns in the model
java.lang.String	getColumnName(int columnIndex) returns the name of the column at columnIndex
Instances	getInstances() returns the data
double	getInstancesValueAt(int rowIndex, int columnIndex) returns the double value of the underlying Instances object at the given position, -1 if out of bounds
int	getRowCount() returns the number of rows in the model
int	getType(int columnIndex) returns the TYPE of the attribute at the given position
int	getType(int rowIndex, int columnIndex) returns the TYPE of the attribute at the given position
java.lang.Object	getValueAt(int rowIndex, int columnIndex) returns the value for the cell at columnindex and rowIndex
boolean	isCellEditable(int rowIndex, int columnIndex) returns true if the cell at rowindex and columnindexis editable
boolean	isMissingAt(int rowIndex, int columnIndex) checks whether the value at the given position is missing
boolean	isNotificationEnabled() returns whether the notification of changes is enabled
boolean	isReadOnly() returns whether the model is read-only
boolean	isUndoEnabled() returns whether undo support is enabled
void	notifyListener(javax.swing.event.TableModelEvent e) notfies all listener of the change of the model
void	removeTableModelListener(javax.swing.event.TableModelListener l) removes a listener from the list that is notified each time a change to the data model occurs
void	renameAttributeAt(int columnIndex, java.lang.String newName) renames the attribute at the given col index
void	setInstances(Instances data) sets the data
void	setNotificationEnabled(boolean enabled) sets whether the notification of changes is enabled
void	setReadOnly(boolean value) sets whether the model is read-only
void	setUndoEnabled(boolean enabled) sets whether undo support is enabled
void	setValueAt(java.lang.Object aValue, int rowIndex, int columnIndex) sets the value in the cell at columnIndex and rowIndex to aValue.
void	setValueAt(java.lang.Object aValue, int rowIndex, int columnIndex, boolean notify) sets the value in the cell at columnIndex and rowIndex to aValue.
void	sortInstances(int columnIndex) sorts the instances via the given attribute
void	undo() undoes the last action

Methods inherited from class java.lang.Object

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

Constructor Detail

ArffTableModel

public ArffTableModel(java.lang.String filename)

initializes the object and loads the given file

Parameters:

filename - the file to load

ArffTableModel

public ArffTableModel(Instances data)

initializes the model with the given data

Parameters:

data - the data to use

Method Detail

isNotificationEnabled

public boolean isNotificationEnabled()

returns whether the notification of changes is enabled

Returns:

true if notification of changes is enabled

setNotificationEnabled

public void setNotificationEnabled(boolean enabled)

sets whether the notification of changes is enabled

Parameters:

enabled - enables/disables the notification

isUndoEnabled

public boolean isUndoEnabled()

returns whether undo support is enabled

Specified by:

isUndoEnabled in interface Undoable

Returns:

true if undo support is enabled

setUndoEnabled

public void setUndoEnabled(boolean enabled)

sets whether undo support is enabled

Specified by:

setUndoEnabled in interface Undoable

Parameters:

enabled - whether to enable/disable undo support

isReadOnly

public boolean isReadOnly()

returns whether the model is read-only

Returns:

true if model is read-only

setReadOnly

public void setReadOnly(boolean value)

sets whether the model is read-only

Parameters:

value - if true the model is set to read-only

setInstances

public void setInstances(Instances data)

sets the data

Parameters:

data - the data to use

getInstances

public Instances getInstances()

returns the data

Returns:

the current data

getAttributeAt

public Attribute getAttributeAt(int columnIndex)

returns the attribute at the given index, can be NULL if not an attribute column

Parameters:

columnIndex - the index of the column

Returns:

the attribute at the position

getType

public int getType(int columnIndex)

returns the TYPE of the attribute at the given position

Parameters:

columnIndex - the index of the column

Returns:

the attribute type

getType

public int getType(int rowIndex,
                   int columnIndex)

returns the TYPE of the attribute at the given position

Parameters:

rowIndex - the index of the row

columnIndex - the index of the column

Returns:

the attribute type

deleteAttributeAt

public void deleteAttributeAt(int columnIndex)

deletes the attribute at the given col index. notifies the listeners.

Parameters:

columnIndex - the index of the attribute to delete

deleteAttributeAt

public void deleteAttributeAt(int columnIndex,
                              boolean notify)

deletes the attribute at the given col index

Parameters:

columnIndex - the index of the attribute to delete

notify - whether to notify the listeners

deleteAttributes

public void deleteAttributes(int[] columnIndices)

deletes the attributes at the given indices

Parameters:

columnIndices - the column indices

renameAttributeAt

public void renameAttributeAt(int columnIndex,
                              java.lang.String newName)

renames the attribute at the given col index

Parameters:

columnIndex - the index of the column

newName - the new name of the attribute

attributeAsClassAt

public void attributeAsClassAt(int columnIndex)

sets the attribute at the given col index as the new class attribute, i.e. it moves it to the end of the attributes

Parameters:

columnIndex - the index of the column

deleteInstanceAt

public void deleteInstanceAt(int rowIndex)

deletes the instance at the given index

Parameters:

rowIndex - the index of the row

deleteInstanceAt

public void deleteInstanceAt(int rowIndex,
                             boolean notify)

deletes the instance at the given index

Parameters:

rowIndex - the index of the row

notify - whether to notify the listeners

deleteInstances

public void deleteInstances(int[] rowIndices)

deletes the instances at the given positions

Parameters:

rowIndices - the indices to delete

sortInstances

public void sortInstances(int columnIndex)

sorts the instances via the given attribute

Parameters:

columnIndex - the index of the column

getAttributeColumn

public int getAttributeColumn(java.lang.String name)

returns the column of the given attribute name, -1 if not found

Parameters:

name - the name of the attribute

Returns:

the column index or -1 if not found

getColumnClass

public java.lang.Class getColumnClass(int columnIndex)

returns the most specific superclass for all the cell values in the column (always String)

Specified by:

getColumnClass in interface javax.swing.table.TableModel

Parameters:

columnIndex - the column index

Returns:

the class of the column

getColumnCount

public int getColumnCount()

returns the number of columns in the model

Specified by:

getColumnCount in interface javax.swing.table.TableModel

Returns:

the number of columns

getColumnName

public java.lang.String getColumnName(int columnIndex)

returns the name of the column at columnIndex

Specified by:

getColumnName in interface javax.swing.table.TableModel

Parameters:

columnIndex - the index of the column

Returns:

the name of the column

getRowCount

public int getRowCount()

returns the number of rows in the model

Specified by:

getRowCount in interface javax.swing.table.TableModel

Returns:

the number of rows

isMissingAt

public boolean isMissingAt(int rowIndex,
                           int columnIndex)

checks whether the value at the given position is missing

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

true if the value at the position is missing

getInstancesValueAt

public double getInstancesValueAt(int rowIndex,
                                  int columnIndex)

returns the double value of the underlying Instances object at the given position, -1 if out of bounds

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

the underlying value in the Instances object

getValueAt

public java.lang.Object getValueAt(int rowIndex,
                                   int columnIndex)

returns the value for the cell at columnindex and rowIndex

Specified by:

getValueAt in interface javax.swing.table.TableModel

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

the value at the position

isCellEditable

public boolean isCellEditable(int rowIndex,
                              int columnIndex)

returns true if the cell at rowindex and columnindexis editable

Specified by:

isCellEditable in interface javax.swing.table.TableModel

Parameters:

rowIndex - the index of the row

columnIndex - the index of the column

Returns:

true if the cell is editable

setValueAt

public void setValueAt(java.lang.Object aValue,
                       int rowIndex,
                       int columnIndex)

sets the value in the cell at columnIndex and rowIndex to aValue. but only the value and the value can be changed

Specified by:

setValueAt in interface javax.swing.table.TableModel

Parameters:

aValue - the new value

rowIndex - the row index

columnIndex - the column index

setValueAt

public void setValueAt(java.lang.Object aValue,
                       int rowIndex,
                       int columnIndex,
                       boolean notify)

sets the value in the cell at columnIndex and rowIndex to aValue. but only the value and the value can be changed

Parameters:

aValue - the new value

rowIndex - the row index

columnIndex - the column index

notify - whether to notify the listeners

addTableModelListener

public void addTableModelListener(javax.swing.event.TableModelListener l)

adds a listener to the list that is notified each time a change to data model occurs

Specified by:

addTableModelListener in interface javax.swing.table.TableModel

Parameters:

l - the listener to add

removeTableModelListener

public void removeTableModelListener(javax.swing.event.TableModelListener l)

removes a listener from the list that is notified each time a change to the data model occurs

Specified by:

removeTableModelListener in interface javax.swing.table.TableModel

Parameters:

l - the listener to remove

notifyListener

public void notifyListener(javax.swing.event.TableModelEvent e)

notfies all listener of the change of the model

Parameters:

e - the event to send to the listeners

clearUndo

public void clearUndo()

removes the undo history

Specified by:

clearUndo in interface Undoable

canUndo

public boolean canUndo()

returns whether an undo is possible, i.e. whether there are any undo points saved so far

Specified by:

canUndo in interface Undoable

Returns:

returns TRUE if there is an undo possible

undo

public void undo()

undoes the last action

Specified by:

undo in interface Undoable

addUndoPoint

public void addUndoPoint()

adds an undo point to the undo history, if the undo support is enabled

Specified by:

addUndoPoint in interface Undoable

See Also:

isUndoEnabled(), setUndoEnabled(boolean)