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Interface com.sun.java.accessibility.AccessibleComponent

public interface AccessibleComponent

See Also:

Accessible, getAccessibleContext, AccessibleContext, getAccessibleComponent

addFocusListener(FocusListener)

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

contains(Point)

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.

getAccessibleAt(Point)

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

getBackground()

Get the background color of this object.

getBounds()

Gets the bounds of this object in the form of a Rectangle object.

getCursor()

Get the Cursor of this object.

getFont()

Get the Font of this object.

getFontMetrics(Font)

Get the FontMetrics of this object.

getForeground()

Get the foreground color of this object.

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.

getLocationOnScreen()

Returns the location of the object on the screen.

getSize()

Returns the size of this object in the form of a Dimension object.

isEnabled()

Determine if the object is enabled.

isFocusTraversable()

Returns whether this object can accept focus or not.

isShowing()

Determine if the object is showing.

isVisible()

Determine if the object is visible.

removeFocusListener(FocusListener)

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

requestFocus()

Requests focus for this object.

setBackground(Color)

Set the background color of this object.

setBounds(Rectangle)

Sets the bounds of this object in the form of a Rectangle object.

setCursor(Cursor)

Set the Cursor of this object.

setEnabled(boolean)

Set the enabled state of the object.

setFont(Font)

Set the Font of this object.

setForeground(Color)

Set the foreground color of this object.

setLocation(Point)

Sets the location of the object relative to the parent.

setSize(Dimension)

Resizes this object so that it has width and height.

setVisible(boolean)

Set the visible state of the object.

 public abstract Color getBackground()

Get the background color of this object.

Returns:

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

See Also:

setBackground

 public abstract void setBackground(Color c)

Set the background color of this object.

Parameters:

c - the new Color for the background

See Also:

setBackground

 public abstract Color getForeground()

Get the foreground color of this object.

Returns:

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

See Also:

setForeground

 public abstract void setForeground(Color c)

Set the foreground color of this object.

Parameters:

c - the new Color for the foreground

See Also:

getForeground

 public abstract Cursor getCursor()

Get the Cursor of this object.

Returns:

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

See Also:

setCursor

 public abstract void setCursor(Cursor cursor)

Set the Cursor of this object.

Parameters:

c - the new Cursor for the object

See Also:

getCursor

 public abstract Font getFont()

Get the Font of this object.

Returns:

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

See Also:

setFont

 public abstract void setFont(Font f)

Set the Font of this object.

Parameters:

f - the new Font for the object

See Also:

getFont

 public abstract FontMetrics getFontMetrics(Font f)

Get the FontMetrics of this object.

Parameters:

f - the Font

Returns:

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

See Also:

getFont

 public abstract boolean isEnabled()

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

Returns:

true if object is enabled; otherwise, false

See Also:

setEnabled, getAccessibleStateSet, ENABLED, AccessibleStateSet

 public abstract void setEnabled(boolean b)

Set the enabled state of the object.

Parameters:

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

See Also:

isEnabled

 public abstract 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.

Returns:

true if object is visible; otherwise, false

See Also:

setVisible, getAccessibleStateSet, VISIBLE, AccessibleStateSet

 public abstract void setVisible(boolean b)

Set the visible state of the object.

Parameters:

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

See Also:

isVisible

 public abstract 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).

Returns:

true if object is showing; otherwise, false

 public abstract 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.

Parameters:

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

Returns:

true if object contains Point; otherwise false

See Also:

getBounds

 public abstract Point getLocationOnScreen()

Returns the location of the object on the screen.

Returns:

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

See Also:

getBounds, getLocation

 public abstract 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.

Returns:

An instance of Point representing the top-left corner of the objects'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

 public abstract void setLocation(Point p)

Sets the location of the object relative to the parent.

Parameters:

p - the new position for the top-left corner

See Also:

getLocation

 public abstract 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.

Returns:

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

See Also:

contains

 public abstract 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.

Parameters:

r - rectangle indicating this component's bounds

See Also:

getBounds

 public abstract Dimension getSize()

Returns the size of this object in the form of a 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.

Returns:

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

See Also:

setSize

 public abstract void setSize(Dimension d)

Resizes this object so that it has width and height.

Parameters:

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

See Also:

getSize

 public abstract Accessible getAccessibleAt(Point p)

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.

Returns:

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

 public abstract 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.

Returns:

true if object can accept focus; otherwise false

See Also:

getAccessibleStateSet, FOCUSABLE, FOCUSED, AccessibleStateSet

 public abstract void requestFocus()

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

 public abstract void addFocusListener(FocusListener l)

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

Parameters:

l - the focus listener

See Also:

removeFocusListener

 public abstract void removeFocusListener(FocusListener l)

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

Parameters:

l - the focus listener

See Also:

addFocusListener

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