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## 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: 5987 $
Author:
  FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary
`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
`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)`

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