Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class Box.Filler.AccessibleBoxFiller - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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javax.swing
Class Box.Filler.AccessibleBoxFiller

java.lang.Object
  |
  +--javax.accessibility.AccessibleContext
        |
        +--javax.swing.Box.Filler.AccessibleBoxFiller

Enclosing class:: Box.Filler

protected class Box.Filler.AccessibleBoxFiller
extends AccessibleContext
implements Serializable, AccessibleComponent

See Also:: Serialized Form

Fields inherited from class javax.accessibility.AccessibleContext

ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, ACCESSIBLE_CARET_PROPERTY, ACCESSIBLE_CHILD_PROPERTY, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_NAME_PROPERTY, ACCESSIBLE_SELECTION_PROPERTY, ACCESSIBLE_STATE_PROPERTY, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent

Constructor Summary

protected Box.Filler.AccessibleBoxFiller()


Method Summary

void addFocusListener(FocusListener l)
          Adds the specified 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)
          Returns the nth Accessible child of the object.

int getAccessibleChildrenCount()
          Returns the number of accessible children in the object.

AccessibleComponent getAccessibleComponent()
          Gets the AccessibleComponent associated with this object if one exists.

int getAccessibleIndexInParent()
          Gets the index of this object in its accessible parent.

Accessible getAccessibleParent()
          Get the Accessible parent of this object.

AccessibleRole getAccessibleRole()
          Gets the role of this object.

AccessibleStateSet getAccessibleStateSet()
          Gets the state of this object.

Color getBackground()
          Gets the background color of this object.

Rectangle getBounds()
          Gets the bounds of this object in the form of a Rectangle object.

Cursor getCursor()
          Gets the Cursor of this object.

Font getFont()
          Gets the Font of this object.

FontMetrics getFontMetrics(Font f)
          Gets the FontMetrics of this object.

Color getForeground()
          Gets the foreground color of this object.

Locale getLocale()
          Returns the locale of this object.

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()
          Determines if the object is enabled.

boolean isFocusTraversable()
          Returns whether this object can accept focus or not.

boolean isShowing()
          Determines if the object is showing.

boolean isVisible()
          Determines if the object is visible.

void removeFocusListener(FocusListener l)
          Removes the specified listener so it no longer receives focus events from this component.

void requestFocus()
          Requests focus for this object.

void setBackground(Color c)
          Sets 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)
          Sets the enabled state of the object.

void setFont(Font f)
          Sets the Font of this object.

void setForeground(Color c)
          Sets 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.

void setVisible(boolean b)
          Sets the visible state of the object.

Methods inherited from class javax.accessibility.AccessibleContext

addPropertyChangeListener, firePropertyChange, getAccessibleAction, getAccessibleDescription, getAccessibleName, getAccessibleSelection, getAccessibleText, getAccessibleValue, removePropertyChangeListener, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods inherited from class java.lang.Object

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

Constructor Detail

Box.Filler.AccessibleBoxFiller

protected Box.Filler.AccessibleBoxFiller()

Method Detail

getAccessibleRole

public AccessibleRole getAccessibleRole()

Gets the role of this object.

Overrides:: getAccessibleRole in class AccessibleContext

Returns:: an instance of AccessibleRole describing the role of the object (AccessibleRole.FILLER)
See Also:: AccessibleRole

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()

Gets the state of this object.

Overrides:: getAccessibleStateSet in class AccessibleContext

Returns:: an instance of AccessibleStateSet containing the current state set of the object
See Also:: AccessibleState

getAccessibleParent

public Accessible getAccessibleParent()

Get the Accessible parent of this object. If the parent of this object implements Accessible, this method should simply return getParent().

Overrides:: getAccessibleParent in class AccessibleContext

Returns:: the Accessible parent of this object; null if this object does not have an Accessible parent

getAccessibleIndexInParent

public int getAccessibleIndexInParent()

Gets the index of this object in its accessible parent.

Overrides:: getAccessibleIndexInParent in class AccessibleContext

Returns:: the index of this object in its parent >= 0; -1 if this object does not have an accessible parent.
See Also:: getAccessibleParent()

getAccessibleChildrenCount

public int getAccessibleChildrenCount()

Returns the number of accessible children in the object. If all of the children of this object implement Accessible, then this method should return the number of children of this object.

Overrides:: getAccessibleChildrenCount in class AccessibleContext

Returns:: the number of accessible children in the object >= 0

getAccessibleChild

public Accessible getAccessibleChild(int i)

Returns the nth Accessible child of the object.

Overrides:: getAccessibleChild in class AccessibleContext

Parameters:: i - zero-based index of child
Returns:: the nth Accessible child of the object, null if none

getLocale

public Locale getLocale()

Returns the locale of this object.

Overrides:: getLocale in class AccessibleContext

Returns:: the locale of this object

getAccessibleComponent

public AccessibleComponent getAccessibleComponent()

Gets the AccessibleComponent associated with this object if one exists. Otherwise return null.

Overrides:: getAccessibleComponent in class AccessibleContext

Returns:: the component

getBackground

public Color getBackground()

Gets the background color of this object.

Specified by:: getBackground in interface AccessibleComponent

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

setBackground

public void setBackground(Color c)

Sets the background color of this object. (For transparency, see isOpaque.)

Specified by:: setBackground in interface AccessibleComponent

Parameters:: c - the new Color for the background, null if none

getForeground

public Color getForeground()

Gets the foreground color of this object.

Specified by:: getForeground in interface AccessibleComponent

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

setForeground

public void setForeground(Color c)

Sets the foreground color of this object.

Specified by:: setForeground in interface AccessibleComponent

Parameters:: c - the new Color for the foreground, null if none

getCursor

public Cursor getCursor()

Gets the Cursor of this object.

Specified by:: getCursor in interface AccessibleComponent

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

setCursor

public void setCursor(Cursor cursor)

Set the Cursor of this object.

Specified by:: setCursor in interface AccessibleComponent

Parameters:: cursor - the new Cursor for the object, null if none

getFont

public Font getFont()

Gets the Font of this object.

Specified by:: getFont in interface AccessibleComponent

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

setFont

public void setFont(Font f)

Sets the Font of this object.

Specified by:: setFont in interface AccessibleComponent

Parameters:: f - the new Font for the object, null if none

getFontMetrics

public FontMetrics getFontMetrics(Font f)

Gets the FontMetrics of this object.

Specified by:: getFontMetrics in interface AccessibleComponent

Parameters:: f - the Font, null if none
Returns:: the FontMetrics, if supported, the object; otherwise, null
See Also:: getFont()

isEnabled

public boolean isEnabled()

Determines if the object is enabled.

Specified by:: isEnabled in interface AccessibleComponent

Returns:: true if object is enabled; otherwise, false

setEnabled

public void setEnabled(boolean b)

Sets the enabled state of the object.

Specified by:: setEnabled in interface AccessibleComponent

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

isVisible

public boolean isVisible()

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

Specified by:: isVisible in interface AccessibleComponent

Returns:: true if object is visible; otherwise, false

setVisible

public void setVisible(boolean b)

Sets the visible state of the object.

Specified by:: setVisible in interface AccessibleComponent

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

isShowing

public boolean isShowing()

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

Specified by:: isShowing in interface AccessibleComponent

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

Parameters:: p - the Point relative to the coordinate system of the object
Returns:: true if object contains Point; otherwise false

getLocationOnScreen

public Point getLocationOnScreen()

Returns the location of the object on the screen.

Specified by:: getLocationOnScreen in interface AccessibleComponent

Returns:: location of object on screen; can be null if this object is not on the screen

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

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

setLocation

public void setLocation(Point p)

Sets the location of the object relative to the parent.

Specified by:: setLocation in interface AccessibleComponent

Parameters:: p - the location to be set

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

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

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

Parameters:: r - a rectangle indicating this component's bounds

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 objects's height, and the width field of the Dimension object contains this object's width.

Specified by:: getSize in interface AccessibleComponent

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

setSize

public void setSize(Dimension d)

Resizes this object.

Specified by:: setSize in interface AccessibleComponent

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

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

Parameters:: p - The point defining the top-left corner of the Accessible, given in the coordinate space of the object's parent.
Returns:: the Accessible, if it exists, at the specified location; else null

isFocusTraversable

public boolean isFocusTraversable()

Returns whether this object can accept focus or not.

Specified by:: isFocusTraversable in interface AccessibleComponent

Returns:: true if object can accept focus; otherwise false

requestFocus

public void requestFocus()

Requests focus for this object.

Specified by:: requestFocus in interface AccessibleComponent

Tags copied from interface: AccessibleComponent

See Also:: AccessibleComponent.isFocusTraversable()

addFocusListener

public void addFocusListener(FocusListener l)

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

Specified by:: addFocusListener in interface AccessibleComponent

Parameters:: l - the focus listener

removeFocusListener

public void removeFocusListener(FocusListener l)

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

Specified by:: removeFocusListener in interface AccessibleComponent

Parameters:: l - the focus listener