javax.accessibility.AccessibleComponent

The AccessibleComponent interface should be supported by any object that is rendered on the screen. This interface provides the standard mechanism for an assistive technology to determine and set the graphical representation of an object. Applications can determine if an object supports the AccessibleComponent interface by first obtaining its AccessibleContext and then calling the AccessibleContext#getAccessibleComponent method. If the return value is not null, the object supports this interface.

@version

1.7 10/05/99 14:00:28

@author

Peter Korn

@author

Hans Muller

@author

Willie Walker

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

Parameters

l	the focus listener

See Also

#removeFocusListener

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.

Parameters

p	the Point relative to the coordinate system of the object

Return

true if object contains Point; otherwise false

See Also

#getBounds

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

Parameters

p	The point relative to the coordinate system of this object.

Return

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

Gets the background color of this object.

Return

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

See Also

#setBackground

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.

Return

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

See Also

#contains

Gets the Cursor of this object.

Return

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

See Also

#setCursor

Gets the Font of this object.

Return

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

See Also

#setFont

Gets the FontMetrics of this object.

Parameters

the Font

Return

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

See Also

#getFont

Gets the foreground color of this object.

Return

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

See Also

#setForeground

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.

Return

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

Returns the location of the object on the screen.

Return

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

See Also

#getBounds , #getLocation

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.

Return

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

See Also

#setSize

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

Return

true if object is enabled; otherwise, false

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

Return

true if object can accept focus; otherwise false

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

Return

true if object is showing; otherwise, false

Determines 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 AccessibleStateSets.

Return

true if object is visible; otherwise, false

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

Parameters

l	the focus listener

See Also

#addFocusListener

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

See Also

#isFocusTraversable

Sets the background color of this object.

Parameters

c	the new Color for the background

See Also

#setBackground

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.

Parameters

r	rectangle indicating this component's bounds

See Also

#getBounds

Sets the Cursor of this object.

Parameters

cursor

the new Cursor for the object

See Also

#getCursor

Sets the enabled state of the object.

Parameters

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

See Also

#isEnabled

Sets the Font of this object.

Parameters

f	the new Font for the object

See Also

#getFont

Sets the foreground color of this object.

Parameters

c	the new Color for the foreground

See Also

#getForeground

Sets the location of the object relative to the parent.

Parameters

p	the new position for the top-left corner

See Also

#getLocation

Resizes this object so that it has width and height.

Parameters

d	The dimension specifying the new size of the object.

See Also

#getSize

Sets the visible state of the object.

Parameters

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

See Also

#isVisible