Module java.desktop

Package java.awt

Class List.AccessibleAWTList.AccessibleAWTListChild

java.lang.Object

javax.accessibility.AccessibleContext

java.awt.Component.AccessibleAWTComponent

java.awt.List.AccessibleAWTList.AccessibleAWTListChild

All Implemented Interfaces:

Serializable, Accessible, AccessibleComponent

Enclosing class:

List.AccessibleAWTList

protected class List.AccessibleAWTList.AccessibleAWTListChild
extends Component.AccessibleAWTComponent
implements Accessible

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

Since:

1.3

See Also:

• Serialized Form

Nested Class Summary

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

Constructors

Constructor	Description
AccessibleAWTListChild(List parent, int indexInParent)	Constructs new AccessibleAWTListChild with the given parent List and 0-based index of this object in the parent.

Method Summary

Modifier and Type	Method	Description
void	addFocusListener(FocusListener l)	Adds the specified focus listener to receive focus events from this component.
boolean	contains(Point p)	Checks whether the specified point is within this object's bounds, where the point's x and y coordinates are defined to be relative to the coordinate system of the object.
Accessible	getAccessibleAt(Point p)	Returns the Accessible child, if one exists, contained at the local coordinate Point.
Accessible	getAccessibleChild(int i)	Return the specified Accessible child of the object.
int	getAccessibleChildrenCount()	Returns the number of accessible children of the object.
AccessibleContext	getAccessibleContext()	Gets the AccessibleContext for this object.
int	getAccessibleIndexInParent()	Get the 0-based index of this object in its accessible parent.
AccessibleRole	getAccessibleRole()	Get the role of this object.
AccessibleStateSet	getAccessibleStateSet()	Get the state set of this object.
Color	getBackground()	Get the background color of this object.
Rectangle	getBounds()	Gets the bounds of this object in the form of a Rectangle object.
Cursor	getCursor()	Get the Cursor of this object.
Font	getFont()	Get the Font of this object.
FontMetrics	getFontMetrics(Font f)	Get the FontMetrics of this object.
Color	getForeground()	Get the foreground color of this object.
Locale	getLocale()	Gets the locale of the component.
Point	getLocation()	Gets the location of the object relative to the parent in the form of a point specifying the object's top-left corner in the screen's coordinate space.
Point	getLocationOnScreen()	Returns the location of the object on the screen.
Dimension	getSize()	Returns the size of this object in the form of a Dimension object.
boolean	isEnabled()	Determine if the object is enabled.
boolean	isFocusTraversable()	Returns whether this object can accept focus or not.
boolean	isShowing()	Determine if the object is showing.
boolean	isVisible()	Determine if the object is visible.
void	removeFocusListener(FocusListener l)	Removes the specified focus listener so it no longer receives focus events from this component.
void	requestFocus()	Requests focus for this object.
void	setBackground(Color c)	Set the background color of this object.
void	setBounds(Rectangle r)	Sets the bounds of this object in the form of a Rectangle object.
void	setCursor(Cursor cursor)	Set the Cursor of this object.
void	setEnabled(boolean b)	Set the enabled state of the object.
void	setFont(Font f)	Set the Font of this object.
void	setForeground(Color c)	Set the foreground color of this object.
void	setLocation(Point p)	Sets the location of the object relative to the parent.
void	setSize(Dimension d)	Resizes this object so that it has width and height.
void	setVisible(boolean b)	Set the visible state of the object.

Methods declared in class java.awt.Component.AccessibleAWTComponent

addPropertyChangeListener, getAccessibleComponent, getAccessibleDescription, getAccessibleName, getAccessibleParent, removePropertyChangeListener

Methods declared in class javax.accessibility.AccessibleContext

firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleSelection, 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

AccessibleAWTListChild

public AccessibleAWTListChild(List parent,
 int indexInParent)

Constructs new AccessibleAWTListChild with the given parent List and 0-based index of this object in the parent.

Parameters:

parent - the parent List

indexInParent - the index in the parent

Method Details

getAccessibleContext

public AccessibleContext getAccessibleContext()

Gets the AccessibleContext for this object. In the implementation of the Java Accessibility API for this class, return this object, which acts as its own AccessibleContext.

Specified by:

getAccessibleContext in interface Accessible

Returns:

this object

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

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()

Get the state set of this object. The AccessibleStateSet of an object is composed of a set of unique AccessibleState's. A change in the AccessibleStateSet of an object will cause a PropertyChangeEvent to be fired for the ACCESSIBLE_STATE_PROPERTY property.

Overrides:

getAccessibleStateSet in class Component.AccessibleAWTComponent

Returns:

an instance of AccessibleStateSet containing the current state set of the object

See Also:

• AccessibleStateSet
• AccessibleState
• Component.AccessibleAWTComponent.addPropertyChangeListener(java.beans.PropertyChangeListener)

getLocale

public Locale getLocale()

Gets the locale of the component. If the component does not have a locale, then the locale of its parent is returned.

Overrides:

getLocale in class Component.AccessibleAWTComponent

Returns:

This component's locale. If this component does not have a locale, the locale of its parent is returned.

Throws:

IllegalComponentStateException - If the Component does not have its own locale and has not yet been added to a containment hierarchy such that the locale can be determined from the containing parent.

getAccessibleIndexInParent

public int getAccessibleIndexInParent()

Get the 0-based index of this object in its accessible parent.

Overrides:

getAccessibleIndexInParent in class Component.AccessibleAWTComponent

Returns:

the 0-based index of this object in its parent; -1 if this object does not have an accessible parent.

See Also:

• Component.AccessibleAWTComponent.getAccessibleParent()
• getAccessibleChildrenCount()
• getAccessibleChild(int)

getAccessibleChildrenCount

public int getAccessibleChildrenCount()

Returns the number of accessible children of the object.

Overrides:

getAccessibleChildrenCount in class Component.AccessibleAWTComponent

Returns:

the number of accessible children of the object.

getAccessibleChild

public Accessible getAccessibleChild(int i)

Return the specified Accessible child of the object. The Accessible children of an Accessible object are zero-based, so the first child of an Accessible child is at index 0, the second child is at index 1, and so on.

Overrides:

getAccessibleChild in class Component.AccessibleAWTComponent

Parameters:

i - zero-based index of child

Returns:

the Accessible child of the object

See Also:

• getAccessibleChildrenCount()

getBackground

public Color getBackground()

Get the background color of this object.

Specified by:

getBackground in interface AccessibleComponent

Overrides:

getBackground in class Component.AccessibleAWTComponent

Returns:

the background color, if supported, of the object; otherwise, null

See Also:

• setBackground(java.awt.Color)

setBackground

public void setBackground(Color c)

Set the background color of this object.

Specified by:

setBackground in interface AccessibleComponent

Overrides:

setBackground in class Component.AccessibleAWTComponent

Parameters:

c - the new Color for the background

See Also:

• getBackground()

getForeground

public Color getForeground()

Get the foreground color of this object.

Specified by:

getForeground in interface AccessibleComponent

Overrides:

getForeground in class Component.AccessibleAWTComponent

Returns:

the foreground color, if supported, of the object; otherwise, null

See Also:

• setForeground(java.awt.Color)

setForeground

public void setForeground(Color c)

Set the foreground color of this object.

Specified by:

setForeground in interface AccessibleComponent

Overrides:

setForeground in class Component.AccessibleAWTComponent

Parameters:

c - the new Color for the foreground

See Also:

• getForeground()

getCursor

public Cursor getCursor()

Get the Cursor of this object.

Specified by:

getCursor in interface AccessibleComponent

Overrides:

getCursor in class Component.AccessibleAWTComponent

Returns:

the Cursor, if supported, of the object; otherwise, null

See Also:

• setCursor(java.awt.Cursor)

setCursor

public void setCursor(Cursor cursor)

Set the Cursor of this object.

The method may have no visual effect if the Java platform implementation and/or the native system do not support changing the mouse cursor shape.

Specified by:

setCursor in interface AccessibleComponent

Overrides:

setCursor in class Component.AccessibleAWTComponent

Parameters:

cursor - the new Cursor for the object

See Also:

• getCursor()

getFont

public Font getFont()

Get the Font of this object.

Specified by:

getFont in interface AccessibleComponent

Overrides:

getFont in class Component.AccessibleAWTComponent

Returns:

the Font, if supported, for the object; otherwise, null

See Also:

• setFont(java.awt.Font)

setFont

public void setFont(Font f)

Set the Font of this object.

Specified by:

setFont in interface AccessibleComponent

Overrides:

setFont in class Component.AccessibleAWTComponent

Parameters:

f - the new Font for the object

See Also:

• getFont()

getFontMetrics

public FontMetrics getFontMetrics(Font f)

Get the FontMetrics of this object.

Specified by:

getFontMetrics in interface AccessibleComponent

Overrides:

getFontMetrics in class Component.AccessibleAWTComponent

Parameters:

f - the Font

Returns:

the FontMetrics, if supported, the object; otherwise, null

See Also:

• getFont()

isEnabled

public boolean isEnabled()

Determine if the object is enabled. Objects that are enabled will also have the AccessibleState.ENABLED state set in their AccessibleStateSet.

Specified by:

isEnabled in interface AccessibleComponent

Overrides:

isEnabled in class Component.AccessibleAWTComponent

Returns:

true if object is enabled; otherwise, false

See Also:

• setEnabled(boolean)
• AccessibleContext.getAccessibleStateSet()
• AccessibleState.ENABLED
• AccessibleStateSet

setEnabled

public void setEnabled(boolean b)

Set the enabled state of the object.

Specified by:

setEnabled in interface AccessibleComponent

Overrides:

setEnabled in class Component.AccessibleAWTComponent

Parameters:

b - if true, enables this object; otherwise, disables it

See Also:

• isEnabled()

isVisible

public boolean isVisible()

Determine if the object is visible. Note: this means that the object intends to be visible; however, it may not be showing on the screen because one of the objects that this object is contained by is currently not visible. To determine if an object is showing on the screen, use isShowing().

Objects that are visible will also have the AccessibleState.VISIBLE state set in their AccessibleStateSet.

Specified by:

isVisible in interface AccessibleComponent

Overrides:

isVisible in class Component.AccessibleAWTComponent

Returns:

true if object is visible; otherwise, false

See Also:

• setVisible(boolean)
• AccessibleContext.getAccessibleStateSet()
• AccessibleState.VISIBLE
• AccessibleStateSet

setVisible

public void setVisible(boolean b)

Set the visible state of the object.

Specified by:

setVisible in interface AccessibleComponent

Overrides:

setVisible in class Component.AccessibleAWTComponent

Parameters:

b - if true, shows this object; otherwise, hides it

See Also:

• isVisible()

isShowing

public boolean isShowing()

Determine if the object is showing. This is determined by checking the visibility of the object and visibility of the object ancestors. Note: this will return true even if the object is obscured by another (for example, it to object is underneath a menu that was pulled down).

Specified by:

isShowing in interface AccessibleComponent

Overrides:

isShowing in class Component.AccessibleAWTComponent

Returns:

true if object is showing; otherwise, false

contains

public boolean contains(Point p)

Checks whether the specified point is within this object's bounds, where the point's x and y coordinates are defined to be relative to the coordinate system of the object.

Specified by:

contains in interface AccessibleComponent

Overrides:

contains in class Component.AccessibleAWTComponent

Parameters:

p - the Point relative to the coordinate system of the object

Returns:

true if object contains Point; otherwise false

See Also:

• getBounds()

getLocationOnScreen

public Point getLocationOnScreen()

Returns the location of the object on the screen.

Specified by:

getLocationOnScreen in interface AccessibleComponent

Overrides:

getLocationOnScreen in class Component.AccessibleAWTComponent

Returns:

location of object on screen; null if this object is not on the screen

See Also:

• getBounds()
• getLocation()

getLocation

public Point getLocation()

Gets the location of the object relative to the parent in the form of a point specifying the object's top-left corner in the screen's coordinate space.

Specified by:

getLocation in interface AccessibleComponent

Overrides:

getLocation in class Component.AccessibleAWTComponent

Returns:

An instance of Point representing the top-left corner of the object's bounds in the coordinate space of the screen; null if this object or its parent are not on the screen

See Also:

• getBounds()
• getLocationOnScreen()

setLocation

public void setLocation(Point p)

Sets the location of the object relative to the parent.

Specified by:

setLocation in interface AccessibleComponent

Overrides:

setLocation in class Component.AccessibleAWTComponent

Parameters:

p - the new position for the top-left corner

See Also:

• getLocation()

getBounds

public Rectangle getBounds()

Gets the bounds of this object in the form of a Rectangle object. The bounds specify this object's width, height, and location relative to its parent.

Specified by:

getBounds in interface AccessibleComponent

Overrides:

getBounds in class Component.AccessibleAWTComponent

Returns:

A rectangle indicating this component's bounds; null if this object is not on the screen.

See Also:

• contains(java.awt.Point)

setBounds

public void setBounds(Rectangle r)

Sets the bounds of this object in the form of a Rectangle object. The bounds specify this object's width, height, and location relative to its parent.

Specified by:

setBounds in interface AccessibleComponent

Overrides:

setBounds in class Component.AccessibleAWTComponent

Parameters:

r - rectangle indicating this component's bounds

See Also:

• getBounds()

getSize

public Dimension getSize()

Returns the size of this object in the form of a Dimension object. The height field of the Dimension object contains this object's height, and the width field of the Dimension object contains this object's width.

Specified by:

getSize in interface AccessibleComponent

Overrides:

getSize in class Component.AccessibleAWTComponent

Returns:

A Dimension object that indicates the size of this component; null if this object is not on the screen

See Also:

• setSize(java.awt.Dimension)

setSize

public void setSize(Dimension d)

Resizes this object so that it has width and height.

Specified by:

setSize in interface AccessibleComponent

Overrides:

setSize in class Component.AccessibleAWTComponent

Parameters:

d - The dimension specifying the new size of the object.

See Also:

• getSize()

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 Component.AccessibleAWTComponent

Parameters:

p - the point relative to the coordinate system of this object

Returns:

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

isFocusTraversable

public boolean isFocusTraversable()

Returns whether this object can accept focus or not. Objects that can accept focus will also have the AccessibleState.FOCUSABLE state set in their AccessibleStateSet.

Specified by:

isFocusTraversable in interface AccessibleComponent

Overrides:

isFocusTraversable in class Component.AccessibleAWTComponent

Returns:

true if object can accept focus; otherwise false

See Also:

• AccessibleContext.getAccessibleStateSet()
• AccessibleState.FOCUSABLE
• AccessibleState.FOCUSED
• AccessibleStateSet

requestFocus

public void requestFocus()

Requests focus for this object. If this object cannot accept focus, nothing will happen. Otherwise, the object will attempt to take focus.

Specified by:

requestFocus in interface AccessibleComponent

Overrides:

requestFocus in class Component.AccessibleAWTComponent

See Also:

• isFocusTraversable()

addFocusListener

public void addFocusListener(FocusListener l)

Adds the specified focus listener to receive focus events from this component.

Specified by:

addFocusListener in interface AccessibleComponent

Overrides:

addFocusListener in class Component.AccessibleAWTComponent

Parameters:

l - the focus listener

See Also:

• removeFocusListener(java.awt.event.FocusListener)

removeFocusListener

public void removeFocusListener(FocusListener l)

Removes the specified focus listener so it no longer receives focus events from this component.

Specified by:

removeFocusListener in interface AccessibleComponent

Overrides:

removeFocusListener in class Component.AccessibleAWTComponent

Parameters:

l - the focus listener

See Also:

• addFocusListener(java.awt.event.FocusListener)