java.awt

Class Checkbox.AccessibleAWTCheckbox

java.lang.Object

javax.accessibility.AccessibleContext

java.awt.Component.AccessibleAWTComponent

java.awt.Checkbox.AccessibleAWTCheckbox

All Implemented Interfaces:

ItemListener, Serializable, EventListener, AccessibleAction, AccessibleComponent, AccessibleValue

Enclosing class:

Checkbox

protected class Checkbox.AccessibleAWTCheckbox
extends Component.AccessibleAWTComponent
implements ItemListener, AccessibleAction, AccessibleValue

This class provides accessibility support for the checkbox.

See Also:

Serialized Form

Nested Class Summary

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

Fields inherited from interface javax.accessibility.AccessibleAction

CLICK, DECREMENT, INCREMENT, TOGGLE_EXPAND, TOGGLE_POPUP

Constructor Summary

Constructors

Constructor and Description
Checkbox.AccessibleAWTCheckbox() Default constructor which simply calls the super class for generic component accessibility handling.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	doAccessibleAction(int i) Executes the action with the specified id.
AccessibleAction	getAccessibleAction() Returns an implementation of the AccessibleAction interface for this accessible object.
int	getAccessibleActionCount() Returns the number of actions associated with this accessible object.
String	getAccessibleActionDescription(int i) Returns a description of the action with the supplied id.
AccessibleRole	getAccessibleRole() Returns the role of this accessible object.
AccessibleStateSet	getAccessibleStateSet() Returns the state set of this accessible object.
AccessibleValue	getAccessibleValue() Returns an implementation of the AccessibleValue interface for this accessible object.
Number	getCurrentAccessibleValue() Returns the current value of this accessible object.
Number	getMaximumAccessibleValue() Returns the maximum acceptable accessible value used by this object, or null if no maximum value exists.
Number	getMinimumAccessibleValue() Returns the minimum acceptable accessible value used by this object, or null if no minimum value exists.
void	itemStateChanged(ItemEvent event) Captures changes to the state of the checkbox and fires appropriate accessible property change events.
boolean	setCurrentAccessibleValue(Number number) Sets the current value of this accessible object to that supplied.

Methods inherited from class java.awt.Component.AccessibleAWTComponent

addFocusListener, addPropertyChangeListener, contains, getAccessibleAt, getAccessibleChild, getAccessibleChildrenCount, 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, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleSelection, getAccessibleTable, getAccessibleText, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods inherited from class java.lang.Object

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

Constructor Detail

Checkbox.AccessibleAWTCheckbox

public Checkbox.AccessibleAWTCheckbox()

Default constructor which simply calls the super class for generic component accessibility handling.

Method Detail

itemStateChanged

public void itemStateChanged(ItemEvent event)

Captures changes to the state of the checkbox and fires appropriate accessible property change events.

Specified by:

itemStateChanged in interface ItemListener

Parameters:

event - the event fired.

See Also:

ItemListener.itemStateChanged(java.awt.event.ItemEvent)

getAccessibleAction

public AccessibleAction getAccessibleAction()

Returns an implementation of the AccessibleAction interface for this accessible object. In this case, the current instance is simply returned (with a more appropriate type), as it also implements the accessible action as well as the context.

Overrides:

getAccessibleAction in class AccessibleContext

Returns:

the accessible action associated with this context.

See Also:

AccessibleAction

getAccessibleValue

public AccessibleValue getAccessibleValue()

Returns an implementation of the AccessibleValue interface for this accessible object. In this case, the current instance is simply returned (with a more appropriate type), as it also implements the accessible value as well as the context.

Overrides:

getAccessibleValue in class AccessibleContext

Returns:

the accessible value associated with this context.

See Also:

AccessibleValue

getAccessibleActionCount

public int getAccessibleActionCount()

Returns the number of actions associated with this accessible object. This default implementation returns 0.

Specified by:

getAccessibleActionCount in interface AccessibleAction

Returns:

the number of accessible actions available.

See Also:

AccessibleAction.getAccessibleActionCount()

getAccessibleActionDescription

public String getAccessibleActionDescription(int i)

Returns a description of the action with the supplied id. This default implementation always returns null.

Specified by:

getAccessibleActionDescription in interface AccessibleAction

Parameters:

i - the id of the action whose description should be retrieved.

Returns:

a String describing the action.

See Also:

AccessibleAction.getAccessibleActionDescription(int)

doAccessibleAction

public boolean doAccessibleAction(int i)

Executes the action with the specified id. This default implementation simply returns false.

Specified by:

doAccessibleAction in interface AccessibleAction

Parameters:

i - the id of the action to perform.

Returns:

true if the action was performed.

See Also:

AccessibleAction.doAccessibleAction(int)

getCurrentAccessibleValue

public Number getCurrentAccessibleValue()

Returns the current value of this accessible object. If no value has been set, null is returned. This default implementation always returns null, regardless.

Specified by:

getCurrentAccessibleValue in interface AccessibleValue

Returns:

the numeric value of this object, or null if no value has been set.

See Also:

AccessibleValue.getCurrentAccessibleValue()

setCurrentAccessibleValue

public boolean setCurrentAccessibleValue(Number number)

Sets the current value of this accessible object to that supplied. In this default implementation, the value is never set and the method always returns false.

Specified by:

setCurrentAccessibleValue in interface AccessibleValue

Parameters:

number - the new accessible value.

Returns:

true if the value was set.

See Also:

AccessibleValue.setCurrentAccessibleValue(java.lang.Number)

getMinimumAccessibleValue

public Number getMinimumAccessibleValue()

Returns the minimum acceptable accessible value used by this object, or null if no minimum value exists. This default implementation always returns null.

Specified by:

getMinimumAccessibleValue in interface AccessibleValue

Returns:

the minimum acceptable accessible value, or null if there is no minimum.

See Also:

AccessibleValue.getMinimumAccessibleValue()

getMaximumAccessibleValue

public Number getMaximumAccessibleValue()

Returns the maximum acceptable accessible value used by this object, or null if no maximum value exists. This default implementation always returns null.

Specified by:

getMaximumAccessibleValue in interface AccessibleValue

Returns:

the maximum acceptable accessible value, or null if there is no maximum.

See Also:

AccessibleValue.getMaximumAccessibleValue()

getAccessibleRole

public AccessibleRole getAccessibleRole()

Returns the role of this accessible object.

Overrides:

getAccessibleRole in class Component.AccessibleAWTComponent

Returns:

the instance of AccessibleRole, which describes this object.

See Also:

AccessibleRole

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()

Returns the state set of this accessible object.

Overrides:

getAccessibleStateSet in class Component.AccessibleAWTComponent

Returns:

a set of AccessibleStates which represent the current state of the accessible object.

See Also:

AccessibleState, AccessibleStateSet