Java™ Platform
Standard Ed. 6

java.awt
Class List.AccessibleAWTList

java.lang.Object
  extended by javax.accessibility.AccessibleContext
      extended by java.awt.Component.AccessibleAWTComponent
          extended by java.awt.List.AccessibleAWTList
All Implemented Interfaces:
ActionListener, ItemListener, Serializable, EventListener, AccessibleComponent, AccessibleSelection
Enclosing class:
List

protected class List.AccessibleAWTList
extends Component.AccessibleAWTComponent
implements AccessibleSelection, ItemListener, ActionListener

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

Since:
1.3
See Also:
Serialized Form

Nested Class Summary
protected  class List.AccessibleAWTList.AccessibleAWTListChild
          This class implements accessibility support for List children.
 
Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent
Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler
 
Field Summary
 
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_COMPONENT_BOUNDS_CHANGED, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_HYPERTEXT_OFFSET, ACCESSIBLE_INVALIDATE_CHILDREN, 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_ATTRIBUTES_CHANGED, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent
 
Constructor Summary
List.AccessibleAWTList()
           
 
Method Summary
 void actionPerformed(ActionEvent event)
          Invoked when an action occurs.
 void addAccessibleSelection(int i)
          Adds the specified selected item in the object to the object's selection.
 void clearAccessibleSelection()
          Clears the selection in the object, so that nothing in the object is selected.
 Accessible getAccessibleAt(Point p)
          Returns the Accessible child contained at the local coordinate Point, if one exists.
 Accessible getAccessibleChild(int i)
          Return the nth Accessible child of the object.
 int getAccessibleChildrenCount()
          Returns the number of accessible children in the object.
 AccessibleRole getAccessibleRole()
          Get the role of this object.
 AccessibleSelection getAccessibleSelection()
          Get the AccessibleSelection associated with this object.
 Accessible getAccessibleSelection(int i)
          Returns an Accessible representing the specified selected item in the object.
 int getAccessibleSelectionCount()
          Returns the number of items currently selected.
 AccessibleStateSet getAccessibleStateSet()
          Get the state set of this object.
 boolean isAccessibleChildSelected(int i)
          Returns true if the current child of this object is selected.
 void itemStateChanged(ItemEvent event)
          Invoked when an item has been selected or deselected by the user.
 void removeAccessibleSelection(int i)
          Removes the specified selected item in the object from the object's selection.
 void selectAllAccessibleSelection()
          Causes every selected item in the object to be selected if the object supports multiple selections.
 
Methods inherited from class java.awt.Component.AccessibleAWTComponent
addFocusListener, addPropertyChangeListener, contains, getAccessibleComponent, getAccessibleDescription, getAccessibleIndexInParent, getAccessibleName, getAccessibleParent, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, removePropertyChangeListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible
 
Methods inherited from class javax.accessibility.AccessibleContext
firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleTable, getAccessibleText, getAccessibleValue, setAccessibleDescription, setAccessibleName, setAccessibleParent
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

List.AccessibleAWTList

public List.AccessibleAWTList()
Method Detail

actionPerformed

public void actionPerformed(ActionEvent event)
Description copied from interface: ActionListener
Invoked when an action occurs.

Specified by:
actionPerformed in interface ActionListener

itemStateChanged

public void itemStateChanged(ItemEvent event)
Description copied from interface: ItemListener
Invoked when an item has been selected or deselected by the user. The code written for this method performs the operations that need to occur when an item is selected (or deselected).

Specified by:
itemStateChanged in interface ItemListener

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()
Get the state set of this object.

Overrides:
getAccessibleStateSet in class Component.AccessibleAWTComponent
Returns:
an instance of AccessibleState containing the current state of the object
See Also:
AccessibleState

getAccessibleRole

public AccessibleRole getAccessibleRole()
Get the role of this object.

Overrides:
getAccessibleRole in class Component.AccessibleAWTComponent
Returns:
an instance of AccessibleRole describing the role of the object
See Also:
AccessibleRole

getAccessibleAt

public Accessible getAccessibleAt(Point p)
Returns the Accessible child contained at the local coordinate Point, if one exists.

Specified by:
getAccessibleAt in interface AccessibleComponent
Overrides:
getAccessibleAt in class Component.AccessibleAWTComponent
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 at the specified location, if it exists

getAccessibleChildrenCount

public int getAccessibleChildrenCount()
Returns the number of accessible children in the object. If all of the children of this object implement Accessible, than this method should return the number of children of this object.

Overrides:
getAccessibleChildrenCount in class Component.AccessibleAWTComponent
Returns:
the number of accessible children in the object.

getAccessibleChild

public Accessible getAccessibleChild(int i)
Return the nth Accessible child of the object.

Overrides:
getAccessibleChild in class Component.AccessibleAWTComponent
Parameters:
i - zero-based index of child
Returns:
the nth Accessible child of the object
See Also:
AccessibleContext.getAccessibleChildrenCount()

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

getAccessibleSelectionCount

public int getAccessibleSelectionCount()
Returns the number of items currently selected. If no items 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 item in the object. If there isn't a selection, or there are fewer items selected than the integer passed in, the return value will be null.

Specified by:
getAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selected items
Returns:
an Accessible containing the selected item
See Also:
AccessibleSelection.getAccessibleSelectionCount()

isAccessibleChildSelected

public boolean isAccessibleChildSelected(int i)
Returns true 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; else false.
See Also:
AccessibleContext.getAccessibleChild(int)

addAccessibleSelection

public void addAccessibleSelection(int i)
Adds the specified selected item in the object to the object's selection. If the object supports multiple selections, the specified item is added to any existing selection, otherwise it replaces any existing selection in the object. If the specified item is already selected, this method has no effect.

Specified by:
addAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selectable items
See Also:
AccessibleContext.getAccessibleChild(int)

removeAccessibleSelection

public void removeAccessibleSelection(int i)
Removes the specified selected item in the object from the object's selection. If the specified item isn't currently selected, this method has no effect.

Specified by:
removeAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selectable items
See Also:
AccessibleContext.getAccessibleChild(int)

clearAccessibleSelection

public void clearAccessibleSelection()
Clears the selection in the object, so that nothing in the object is selected.

Specified by:
clearAccessibleSelection in interface AccessibleSelection

selectAllAccessibleSelection

public void selectAllAccessibleSelection()
Causes every selected item in the object to be selected if the object supports multiple selections.

Specified by:
selectAllAccessibleSelection in interface AccessibleSelection

Java™ Platform
Standard Ed. 6

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