javax.swing
Class JTable.AccessibleJTable

java.lang.Object
  |
  +--javax.accessibility.AccessibleContext
        |
        +--java.awt.Component.AccessibleAWTComponent
              |
              +--java.awt.Container.AccessibleAWTContainer
                    |
                    +--javax.swing.JComponent.AccessibleJComponent
                          |
                          +--javax.swing.JTable.AccessibleJTable

All Implemented Interfaces:

AccessibleComponent, AccessibleExtendedComponent, AccessibleExtendedTable, AccessibleSelection, AccessibleTable, CellEditorListener, EventListener, ListSelectionListener, PropertyChangeListener, Serializable, TableColumnModelListener, TableModelListener

Enclosing class:

JTable

protected class JTable.AccessibleJTable

extends JComponent.AccessibleJComponent

implements AccessibleSelection, ListSelectionListener, TableModelListener, TableColumnModelListener, CellEditorListener, PropertyChangeListener, AccessibleExtendedTable

This class implements accessibility support for the JTable class. It provides an implementation of the Java Accessibility API appropriate to table user-interface elements.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary

protected class	JTable.AccessibleJTable.AccessibleJTableCell The class provides an implementation of the Java Accessibility API appropriate to table cells.
protected class	JTable.AccessibleJTable.AccessibleJTableModelChange

Nested classes inherited from class javax.swing.JComponent.AccessibleJComponent

JComponent.AccessibleJComponent.AccessibleContainerHandler, JComponent.AccessibleJComponent.AccessibleFocusHandler

Nested classes inherited from class java.awt.Container.AccessibleAWTContainer

Container.AccessibleAWTContainer.AccessibleContainerHandler

Nested classes inherited from class java.awt.Component.AccessibleAWTComponent

Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler

Field Summary

Fields inherited from class javax.swing.JComponent.AccessibleJComponent

accessibleContainerHandler, accessibleFocusHandler

Fields inherited from class java.awt.Component.AccessibleAWTComponent

accessibleAWTComponentHandler, accessibleAWTFocusHandler

Fields inherited from class javax.accessibility.AccessibleContext

ACCESSIBLE_ACTION_PROPERTY, ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, ACCESSIBLE_CARET_PROPERTY, ACCESSIBLE_CHILD_PROPERTY, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_HYPERTEXT_OFFSET, ACCESSIBLE_NAME_PROPERTY, ACCESSIBLE_SELECTION_PROPERTY, ACCESSIBLE_STATE_PROPERTY, ACCESSIBLE_TABLE_CAPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED, ACCESSIBLE_TABLE_MODEL_CHANGED, ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_ROW_HEADER_CHANGED, ACCESSIBLE_TABLE_SUMMARY_CHANGED, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent

Method Summary

void	addAccessibleSelection(int i) Adds the specified Accessible child of the object to the object's selection.
void	clearAccessibleSelection() Clears the selection in the object, so that no children in the object are selected.
void	columnAdded(TableColumnModelEvent e) Track changes to the table contents (column insertions)
void	columnMarginChanged(ChangeEvent e) Track changes of a column moving due to margin changes.
void	columnMoved(TableColumnModelEvent e) Track changes of a column repositioning.
void	columnRemoved(TableColumnModelEvent e) Track changes to the table contents (column deletions)
void	columnSelectionChanged(ListSelectionEvent e) Track that the selection model of the TableColumnModel changed.
void	editingCanceled(ChangeEvent e) Invoked when editing is canceled.
void	editingStopped(ChangeEvent e) Track changes to a cell's contents.
Accessible	getAccessibleAt(int r, int c) Returns the Accessible at a specified row and column in the table.
Accessible	getAccessibleAt(Point p) Returns the Accessible child, if one exists, contained at the local coordinate Point.
Accessible	getAccessibleCaption() Returns the caption for the table.
Accessible	getAccessibleChild(int i) Returns the nth Accessible child of the object.
int	getAccessibleChildrenCount() Returns the number of accessible children in the object.
int	getAccessibleColumn(int index) Returns the column number of an index in the table.
int	getAccessibleColumnAtIndex(int i)
int	getAccessibleColumnCount() Returns the number of columns in the table.
Accessible	getAccessibleColumnDescription(int c) Returns the description of the specified column in the table.
int	getAccessibleColumnExtentAt(int r, int c) Returns the number of columns occupied by the Accessible at a given (row, column).
AccessibleTable	getAccessibleColumnHeader() Returns the column headers as an AccessibleTable.
int	getAccessibleIndex(int r, int c)
int	getAccessibleIndexAt(int r, int c) Returns the index at a given (row, column) in the table.
AccessibleRole	getAccessibleRole() Gets the role of this object.
int	getAccessibleRow(int index) Returns the row number of an index in the table.
int	getAccessibleRowAtIndex(int i)
int	getAccessibleRowCount() Returns the number of rows in the table.
Accessible	getAccessibleRowDescription(int r) Returns the description of the specified row in the table.
int	getAccessibleRowExtentAt(int r, int c) Returns the number of rows occupied by the Accessible at a specified row and column in the table.
AccessibleTable	getAccessibleRowHeader() Returns the row headers as an AccessibleTable.
AccessibleSelection	getAccessibleSelection() Get the AccessibleSelection associated with this object.
Accessible	getAccessibleSelection(int i) Returns an Accessible representing the specified selected child in the object.
int	getAccessibleSelectionCount() Returns the number of Accessible children currently selected.
Accessible	getAccessibleSummary() Returns the summary description of the table.
AccessibleTable	getAccessibleTable() Gets the AccessibleTable associated with this object.
int[]	getSelectedAccessibleColumns() Returns the selected columns in a table.
int[]	getSelectedAccessibleRows() Returns the selected rows in a table.
boolean	isAccessibleChildSelected(int i) Determines if the current child of this object is selected.
boolean	isAccessibleColumnSelected(int c) Returns a boolean value indicating whether the specified column is selected.
boolean	isAccessibleRowSelected(int r) Returns a boolean value indicating whether the specified row is selected.
boolean	isAccessibleSelected(int r, int c) Returns a boolean value indicating whether the accessible at a given (row, column) is selected.
void	propertyChange(PropertyChangeEvent e) Track changes to selection model, column model, etc.
void	removeAccessibleSelection(int i) Removes the specified child of the object from the object's selection.
void	selectAllAccessibleSelection() Causes every child of the object to be selected, but only if the JTable supports multiple selections, and if individual cell selection is enabled.
void	setAccessibleCaption(Accessible a) Sets the caption for the table.
void	setAccessibleColumnDescription(int c, Accessible a) Sets the description text of the specified column of the table.
void	setAccessibleColumnHeader(AccessibleTable a) Returns the column headers as an AccessibleTable.
void	setAccessibleRowDescription(int r, Accessible a) Sets the description text of the specified row of the table.
void	setAccessibleRowHeader(AccessibleTable a) Returns the row headers as an AccessibleTable.
void	setAccessibleSummary(Accessible a) Sets the summary description of the table.
void	tableChanged(TableModelEvent e) Track changes to the table contents
void	tableRowsDeleted(TableModelEvent e) Track changes to the table contents (row deletions)
void	tableRowsInserted(TableModelEvent e) Track changes to the table contents (row insertions)
void	valueChanged(ListSelectionEvent e) Track changes to table cell selections

Methods inherited from class javax.swing.JComponent.AccessibleJComponent

addPropertyChangeListener, getAccessibleDescription, getAccessibleKeyBinding, getAccessibleName, getAccessibleStateSet, getBorderTitle, getTitledBorderText, getToolTipText, removePropertyChangeListener

Methods inherited from class java.awt.Component.AccessibleAWTComponent

addFocusListener, contains, getAccessibleComponent, getAccessibleIndexInParent, getAccessibleParent, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible

Methods inherited from class javax.accessibility.AccessibleContext

firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleText, getAccessibleValue, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.accessibility.AccessibleComponent

addFocusListener, contains, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible

Method Detail

propertyChange

public void propertyChange(PropertyChangeEvent e)

Track changes to selection model, column model, etc. so as to be able to re-place listeners on those in order to pass on information to the Accessibility PropertyChange mechanism

Specified by:

propertyChange in interface PropertyChangeListener

Parameters:

e - A PropertyChangeEvent object describing the event source and the property that has changed.

tableChanged

public void tableChanged(TableModelEvent e)

Track changes to the table contents

Specified by:

tableChanged in interface TableModelListener

tableRowsInserted

public void tableRowsInserted(TableModelEvent e)

Track changes to the table contents (row insertions)

tableRowsDeleted

public void tableRowsDeleted(TableModelEvent e)

Track changes to the table contents (row deletions)

columnAdded

public void columnAdded(TableColumnModelEvent e)

Track changes to the table contents (column insertions)

Specified by:

columnAdded in interface TableColumnModelListener

columnRemoved

public void columnRemoved(TableColumnModelEvent e)

Track changes to the table contents (column deletions)

Specified by:

columnRemoved in interface TableColumnModelListener

columnMoved

public void columnMoved(TableColumnModelEvent e)

Track changes of a column repositioning.

Specified by:

columnMoved in interface TableColumnModelListener

See Also:

TableColumnModelListener

columnMarginChanged

public void columnMarginChanged(ChangeEvent e)

Track changes of a column moving due to margin changes.

Specified by:

columnMarginChanged in interface TableColumnModelListener

See Also:

TableColumnModelListener

columnSelectionChanged

public void columnSelectionChanged(ListSelectionEvent e)

Track that the selection model of the TableColumnModel changed.

Specified by:

columnSelectionChanged in interface TableColumnModelListener

See Also:

TableColumnModelListener

editingStopped

public void editingStopped(ChangeEvent e)

Track changes to a cell's contents. Invoked when editing is finished. The changes are saved, the editor object is discarded, and the cell is rendered once again.

Specified by:

editingStopped in interface CellEditorListener

See Also:

CellEditorListener

editingCanceled

public void editingCanceled(ChangeEvent e)

Invoked when editing is canceled. The editor object is discarded and the cell is rendered once again.

Specified by:

editingCanceled in interface CellEditorListener

See Also:

CellEditorListener

valueChanged

public void valueChanged(ListSelectionEvent e)

Track changes to table cell selections

Specified by:

valueChanged in interface ListSelectionListener

Parameters:

e - the event that characterizes the change.

getAccessibleSelection

public AccessibleSelection getAccessibleSelection()

Get the AccessibleSelection associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleSelection interface on behalf of itself.

Overrides:

getAccessibleSelection in class AccessibleContext

Returns:

this object

See Also:

AccessibleSelection

getAccessibleRole

public AccessibleRole getAccessibleRole()

Gets the role of this object.

Overrides:

getAccessibleRole in class JComponent.AccessibleJComponent

Returns:

an instance of AccessibleRole describing the role of the object

See Also:

AccessibleRole

getAccessibleAt

public Accessible getAccessibleAt(Point p)

Returns the Accessible child, if one exists, contained at the local coordinate Point.

Specified by:

getAccessibleAt in interface AccessibleComponent

Overrides:

getAccessibleAt in class Container.AccessibleAWTContainer

Parameters:

p - the point defining the top-left corner of the Accessible, given in the coordinate space of the object's parent

Returns:

the Accessible, if it exists, at the specified location; else null

getAccessibleChildrenCount

public int getAccessibleChildrenCount()

Returns the number of accessible children in the object. If all of the children of this object implement Accessible, then this method should return the number of children of this object.

Overrides:

getAccessibleChildrenCount in class JComponent.AccessibleJComponent

Returns:

the number of accessible children in the object

getAccessibleChild

public Accessible getAccessibleChild(int i)

Returns the nth Accessible child of the object.

Overrides:

getAccessibleChild in class JComponent.AccessibleJComponent

Parameters:

i - zero-based index of child

Returns:

the nth Accessible child of the object

getAccessibleSelectionCount

public int getAccessibleSelectionCount()

Returns the number of Accessible children currently selected. If no children are selected, the return value will be 0.

Specified by:

getAccessibleSelectionCount in interface AccessibleSelection

Returns:

the number of items currently selected

getAccessibleSelection

public Accessible getAccessibleSelection(int i)

Returns an Accessible representing the specified selected child in the object. If there isn't a selection, or there are fewer children selected than the integer passed in, the return value will be null.

Note that the index represents the i-th selected child, which is different from the i-th child.

Specified by:

getAccessibleSelection in interface AccessibleSelection

Parameters:

i - the zero-based index of selected children

Returns:

the i-th selected child

See Also:

getAccessibleSelectionCount()

isAccessibleChildSelected

public boolean isAccessibleChildSelected(int i)

Determines if the current child of this object is selected.

Specified by:

isAccessibleChildSelected in interface AccessibleSelection

Parameters:

i - the zero-based index of the child in this Accessible object

Returns:

true if the current child of this object is selected

See Also:

AccessibleContext.getAccessibleChild(int)

addAccessibleSelection

public void addAccessibleSelection(int i)

Adds the specified Accessible child of the object to the object's selection. If the object supports multiple selections, the specified child is added to any existing selection, otherwise it replaces any existing selection in the object. If the specified child is already selected, this method has no effect.

This method only works on JTables which have individual cell selection enabled.

Specified by:

addAccessibleSelection in interface AccessibleSelection

Parameters:

i - the zero-based index of the child

See Also:

AccessibleContext.getAccessibleChild(int)

removeAccessibleSelection

public void removeAccessibleSelection(int i)

Removes the specified child of the object from the object's selection. If the specified item isn't currently selected, this method has no effect.

This method only works on JTables which have individual cell selection enabled.

Specified by:

removeAccessibleSelection in interface AccessibleSelection

Parameters:

i - the zero-based index of the child

See Also:

AccessibleContext.getAccessibleChild(int)

clearAccessibleSelection

public void clearAccessibleSelection()

Clears the selection in the object, so that no children in the object are selected.

Specified by:

clearAccessibleSelection in interface AccessibleSelection

selectAllAccessibleSelection

public void selectAllAccessibleSelection()

Causes every child of the object to be selected, but only if the JTable supports multiple selections, and if individual cell selection is enabled.

Specified by:

selectAllAccessibleSelection in interface AccessibleSelection

getAccessibleRow

public int getAccessibleRow(int index)

Returns the row number of an index in the table.

Specified by:

getAccessibleRow in interface AccessibleExtendedTable

Parameters:

index - the zero-based index in the table

Returns:

the zero-based row of the table if one exists; otherwise -1.

getAccessibleColumn

public int getAccessibleColumn(int index)

Returns the column number of an index in the table.

Specified by:

getAccessibleColumn in interface AccessibleExtendedTable

Parameters:

index - the zero-based index in the table

Returns:

the zero-based column of the table if one exists; otherwise -1.

getAccessibleIndex

public int getAccessibleIndex(int r,
                              int c)

Specified by:

getAccessibleIndex in interface AccessibleExtendedTable

getAccessibleTable

public AccessibleTable getAccessibleTable()

Gets the AccessibleTable associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleTables interface on behalf of itself.

Overrides:

getAccessibleTable in class AccessibleContext

Returns:

this object

See Also:

AccessibleTable

getAccessibleCaption

public Accessible getAccessibleCaption()

Returns the caption for the table.

Specified by:

getAccessibleCaption in interface AccessibleTable

Returns:

the caption for the table

setAccessibleCaption

public void setAccessibleCaption(Accessible a)

Sets the caption for the table.

Specified by:

setAccessibleCaption in interface AccessibleTable

Parameters:

a - the caption for the table

getAccessibleSummary

public Accessible getAccessibleSummary()

Returns the summary description of the table.

Specified by:

getAccessibleSummary in interface AccessibleTable

Returns:

the summary description of the table

setAccessibleSummary

public void setAccessibleSummary(Accessible a)

Sets the summary description of the table.

Specified by:

setAccessibleSummary in interface AccessibleTable

Parameters:

a - the summary description of the table

getAccessibleRowCount

public int getAccessibleRowCount()

Description copied from interface: AccessibleTable

Returns the number of rows in the table.

Specified by:

getAccessibleRowCount in interface AccessibleTable

Returns:

the number of rows in the table

getAccessibleColumnCount

public int getAccessibleColumnCount()

Description copied from interface: AccessibleTable

Returns the number of columns in the table.

Specified by:

getAccessibleColumnCount in interface AccessibleTable

Returns:

the number of columns in the table

getAccessibleAt

public Accessible getAccessibleAt(int r,
                                  int c)

Description copied from interface: AccessibleTable

Returns the Accessible at a specified row and column in the table.

Specified by:

getAccessibleAt in interface AccessibleTable

Parameters:

r - zero-based row of the table

c - zero-based column of the table

Returns:

the Accessible at the specified row and column

getAccessibleRowExtentAt

public int getAccessibleRowExtentAt(int r,
                                    int c)

Returns the number of rows occupied by the Accessible at a specified row and column in the table.

Specified by:

getAccessibleRowExtentAt in interface AccessibleTable

Returns:

the number of rows occupied by the Accessible at a specified row and column in the table

getAccessibleColumnExtentAt

public int getAccessibleColumnExtentAt(int r,
                                       int c)

Returns the number of columns occupied by the Accessible at a given (row, column).

Specified by:

getAccessibleColumnExtentAt in interface AccessibleTable

Returns:

the number of columns occupied by the Accessible at a specified row and column in the table

getAccessibleRowHeader

public AccessibleTable getAccessibleRowHeader()

Returns the row headers as an AccessibleTable.

Specified by:

getAccessibleRowHeader in interface AccessibleTable

Returns:

an AccessibleTable representing the row headers

setAccessibleRowHeader

public void setAccessibleRowHeader(AccessibleTable a)

Returns the row headers as an AccessibleTable.

Specified by:

setAccessibleRowHeader in interface AccessibleTable

Parameters:

a - an AccessibleTable representing the row headers

Returns:

an AccessibleTable representing the row headers

getAccessibleColumnHeader

public AccessibleTable getAccessibleColumnHeader()

Returns the column headers as an AccessibleTable.

Specified by:

getAccessibleColumnHeader in interface AccessibleTable

Returns:

an AccessibleTable representing the column headers

setAccessibleColumnHeader

public void setAccessibleColumnHeader(AccessibleTable a)

Returns the column headers as an AccessibleTable.

Specified by:

setAccessibleColumnHeader in interface AccessibleTable

Parameters:

a - an AccessibleTable representing the column headers

Returns:

an AccessibleTable representing the column headers

getAccessibleRowDescription

public Accessible getAccessibleRowDescription(int r)

Returns the description of the specified row in the table.

Specified by:

getAccessibleRowDescription in interface AccessibleTable

Parameters:

r - zero-based row of the table

Returns:

the description of the row

setAccessibleRowDescription

public void setAccessibleRowDescription(int r,
                                        Accessible a)

Sets the description text of the specified row of the table.

Specified by:

setAccessibleRowDescription in interface AccessibleTable

Parameters:

r - zero-based row of the table

a - the description of the row

getAccessibleColumnDescription

public Accessible getAccessibleColumnDescription(int c)

Returns the description of the specified column in the table.

Specified by:

getAccessibleColumnDescription in interface AccessibleTable

Parameters:

c - zero-based column of the table

Returns:

the description of the column

setAccessibleColumnDescription

public void setAccessibleColumnDescription(int c,
                                           Accessible a)

Sets the description text of the specified column of the table.

Specified by:

setAccessibleColumnDescription in interface AccessibleTable

Parameters:

c - zero-based column of the table

a - the description of the column

isAccessibleSelected

public boolean isAccessibleSelected(int r,
                                    int c)

Returns a boolean value indicating whether the accessible at a given (row, column) is selected.

Specified by:

isAccessibleSelected in interface AccessibleTable

Parameters:

r - zero-based row of the table

c - zero-based column of the table

Returns:

the boolean value true if the accessible at (row, column) is selected; otherwise, the boolean value false

isAccessibleRowSelected

public boolean isAccessibleRowSelected(int r)

Returns a boolean value indicating whether the specified row is selected.

Specified by:

isAccessibleRowSelected in interface AccessibleTable

Parameters:

r - zero-based row of the table

Returns:

the boolean value true if the specified row is selected; otherwise, false

isAccessibleColumnSelected

public boolean isAccessibleColumnSelected(int c)

Returns a boolean value indicating whether the specified column is selected.

Specified by:

isAccessibleColumnSelected in interface AccessibleTable

Returns:

the boolean value true if the specified column is selected; otherwise, false

getSelectedAccessibleRows

public int[] getSelectedAccessibleRows()

Returns the selected rows in a table.

Specified by:

getSelectedAccessibleRows in interface AccessibleTable

Returns:

an array of selected rows where each element is a zero-based row of the table

getSelectedAccessibleColumns

public int[] getSelectedAccessibleColumns()

Returns the selected columns in a table.

Specified by:

getSelectedAccessibleColumns in interface AccessibleTable

Returns:

an array of selected columns where each element is a zero-based column of the table

getAccessibleRowAtIndex

public int getAccessibleRowAtIndex(int i)

getAccessibleColumnAtIndex

public int getAccessibleColumnAtIndex(int i)

getAccessibleIndexAt

public int getAccessibleIndexAt(int r,
                                int c)

Returns the index at a given (row, column) in the table.

Parameters:

r - zero-based row of the table

c - zero-based column of the table

Returns:

the index into the table