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protected abstract class Component.AccessibleAWTComponent extends AccessibleContext implements Serializable, AccessibleComponent
Inner class of Component used to provide default support for accessibility. This class is not meant to be used directly by application developers, but is instead meant only to be subclassed by component developers.
The class used to obtain the accessible role for this object.
Nested Class Summary | |
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protected class |
Fire PropertyChange listener, if one is registered, when shown/hidden.. |
protected class |
Fire PropertyChange listener, if one is registered, when focus events happen |
Field Summary | |
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protected ComponentListener |
accessibleAWTComponentHandler
|
protected FocusListener |
accessibleAWTFocusHandler
|
Constructor Summary | |
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protected |
Though the class is abstract, this should be called by all sub-classes. |
Method Summary | |
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void |
Adds the specified focus listener to receive focus events from this component. |
void |
Adds a PropertyChangeListener to the listener list.
|
boolean |
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 |
Returns the Accessible child,
if one exists, contained at the local
coordinate Point .
|
Accessible |
getAccessibleChild(int i) Returns the nth Accessible child of the object.
|
int |
Returns the number of accessible children in the object. |
AccessibleComponent |
Gets the AccessibleComponent associated
with this object if one exists.
|
String |
Gets the accessible description of this object. |
int |
Gets the index of this object in its accessible parent. |
String |
Gets the accessible name of this object. |
Accessible |
Gets the Accessible parent of this object.
|
AccessibleRole |
Gets the role of this object. |
AccessibleStateSet |
Gets the state of this object. |
Color |
Gets the background color of this object. |
Rectangle |
Gets the bounds of this object in the form of a Rectangle object. |
Cursor |
Gets the Cursor of this object.
|
Font |
getFont() Gets the Font of this object.
|
FontMetrics |
Gets the FontMetrics of this object.
|
Color |
Gets the foreground color of this object. |
Locale |
Returns the locale of this object. |
Point |
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 |
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 |
Determines if the object is enabled. |
boolean |
Returns whether this object can accept focus or not. |
boolean |
Determines if the object is showing. |
boolean |
Determines if the object is visible. |
void |
Removes the specified focus listener so it no longer receives focus events from this component. |
void |
Remove a PropertyChangeListener from the listener list. |
void |
Requests focus for this object. |
void |
Sets the background color of this object. |
void |
Sets the bounds of this object in the form of a Rectangle object.
|
void |
Sets the Cursor of this object.
|
void |
setEnabled(boolean b) Sets the enabled state of the object. |
void |
Sets the Font of this object.
|
void |
Sets the foreground color of this object. |
void |
setLocation(Point p) Sets the location of the object relative to the parent. |
void |
Resizes this object so that it has width and height. |
void |
setVisible(boolean b) Sets the visible state of the object. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected ComponentListener accessibleAWTComponentHandler
protected FocusListener accessibleAWTFocusHandler
Constructor Detail |
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protected Component.AccessibleAWTComponent()
Method Detail |
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public void addFocusListener(FocusListener l)
l
- the focus listenerpublic void addPropertyChangeListener(PropertyChangeListener listener)
PropertyChangeListener
to the listener list.
addPropertyChangeListener
in class AccessibleContext
listener
- the property change listener to be addedpublic boolean contains(Point p)
p
- the Point
relative to the
coordinate system of the objectPoint
; otherwise falsepublic Accessible getAccessibleAt(Point p)
Accessible
child,
if one exists, contained at the local
coordinate Point
. Otherwise returns
null
.
p
- the point defining the top-left corner of
the Accessible
, given in the
coordinate space of the object's parentAccessible
, if it exists,
at the specified location; else null
public Accessible getAccessibleChild(int i)
Accessible
child of the object.
getAccessibleChild
in class AccessibleContext
i
- zero-based index of childAccessible
child of the objectpublic int getAccessibleChildrenCount()
Accessible
,
then this method should return the number of children of this object.
getAccessibleChildrenCount
in class AccessibleContext
public AccessibleComponent getAccessibleComponent()
AccessibleComponent
associated
with this object if one exists.
Otherwise return null
.
getAccessibleComponent
in class AccessibleContext
public String getAccessibleDescription()
getAccessibleDescription
in class AccessibleContext
null
if this object does not have a descriptionpublic int getAccessibleIndexInParent()
getAccessibleIndexInParent
in class AccessibleContext
public String getAccessibleName()
java.awt.Component.getName()
,
as that generally isn't a localized name,
and doesn't have meaning for the user. If the
object is fundamentally a text object (e.g. a menu item), the
accessible name should be the text of the object (e.g. "save").
If the object has a tooltip, the tooltip text may also be an
appropriate String to return.
getAccessibleName
in class AccessibleContext
null
if this
object does not have a namepublic Accessible getAccessibleParent()
Accessible
parent of this object.
If the parent of this object implements Accessible
,
this method should simply return getParent
.
getAccessibleParent
in class AccessibleContext
Accessible
parent of this
object -- can be null
if this
object does not have an Accessible
parentpublic AccessibleRole getAccessibleRole()
getAccessibleRole
in class AccessibleContext
AccessibleRole
describing the role of the objectpublic AccessibleStateSet getAccessibleStateSet()
getAccessibleStateSet
in class AccessibleContext
AccessibleStateSet
containing the current state set of the objectpublic Color getBackground()
null
public Rectangle getBounds()
null
if this object is not on the screenpublic Cursor getCursor()
Cursor
of this object.
Cursor
, if supported,
of the object; otherwise, null
public Font getFont()
Font
of this object.
Font
, if supported,
for the object; otherwise, null
public FontMetrics getFontMetrics(Font f)
FontMetrics
of this object.
f
- the Font
FontMetrics
, if supported,
the object; otherwise, null
public Color getForeground()
null
public Locale getLocale()
getLocale
in class AccessibleContext
public Point getLocation()
null
if this object or its parent are not on the screenpublic Point getLocationOnScreen()
null
if this object is not on the screenpublic Dimension getSize()
Dimension
object. The height field of the
Dimension
object contains this objects's
height, and the width field of the Dimension
object contains this object's width.
Dimension
object that indicates
the size of this component; null
if
this object is not on the screenpublic boolean isEnabled()
public boolean isFocusTraversable()
public boolean isShowing()
public boolean isVisible()
isShowing
.
public void removeFocusListener(FocusListener l)
l
- the focus listenerpublic void removePropertyChangeListener(PropertyChangeListener listener)
removePropertyChangeListener
in class AccessibleContext
listener
- The PropertyChangeListener to be removedpublic void requestFocus()
public void setBackground(Color c)
isOpaque
.)
c
- the new Color
for the backgroundpublic void setBounds(Rectangle r)
Rectangle
object.
The bounds specify this object's width, height, and location
relative to its parent.
r
- a rectangle indicating this component's boundspublic void setCursor(Cursor cursor)
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.
cursor
- the new Cursor
for the objectpublic void setEnabled(boolean b)
b
- if true, enables this object; otherwise, disables itpublic void setFont(Font f)
Font
of this object.
f
- the new Font
for the objectpublic void setForeground(Color c)
c
- the new Color
for the foregroundpublic void setLocation(Point p)
p
- the coordinates of the objectpublic void setSize(Dimension d)
d
- - the dimension specifying the new size of the objectpublic void setVisible(boolean b)
b
- if true, shows this object; otherwise, hides it
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