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Class List.AccessibleAWTList

java.lang.Object

javax.accessibility.AccessibleContext

java.awt.Component.AccessibleAWTComponent

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:

Nested Class Summary

Modifier and Type	Class	Description
`protected class`	`List.AccessibleAWTList.AccessibleAWTListChild`	This class implements accessibility support for List children.

Nested classes/interfaces declared in class java.awt.Component.AccessibleAWTComponent

Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler

Field Summary

Fields declared in class java.awt.Component.AccessibleAWTComponent

accessibleAWTComponentHandler, accessibleAWTFocusHandler

Fields declared in 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

Constructor	Description
`AccessibleAWTList()`	Constructs new `AccessibleAWTList`

Method Summary

Modifier and Type	Method	Description
`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 declared in 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 declared in class javax.accessibility.AccessibleContext

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

Methods declared in class java.lang.Object

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

Constructor Details

AccessibleAWTList

public AccessibleAWTList()

Constructs new AccessibleAWTList

Method Details

actionPerformed

public void actionPerformed(ActionEvent event)

Description copied from interface: ActionListener

Invoked when an action occurs.

Specified by:: actionPerformed in interface ActionListener
Parameters:: event - the event to be processed

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
Parameters:: event - the event to be processed

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:

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:

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:

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:

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:

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:

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:

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:

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

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