Java javax.accessibility Interface AccessibleComponent（JDK8）

Method Detail

• getBackground

  Color getBackground()

  Gets the background color of this object.

  Returns:

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

  See Also:

  setBackground(java.awt.Color)

• setBackground

  void setBackground(Color c)

  Sets the background color of this object.

  Parameters:

  c - the new Color for the background

  See Also:

  setBackground(java.awt.Color)

• getForeground

  Color getForeground()

  Gets the foreground color of this object.

  Returns:

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

  See Also:

  setForeground(java.awt.Color)

• setForeground

  void setForeground(Color c)

  Sets the foreground color of this object.

  Parameters:

  c - the new Color for the foreground

  See Also:

  getForeground()

• getCursor

  Cursor getCursor()

  Gets the Cursor of this object.

  Returns:

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

  See Also:

  setCursor(java.awt.Cursor)

• setCursor

  void setCursor(Cursor cursor)

  Sets the Cursor of this object.

  Parameters:

  cursor - the new Cursor for the object

  See Also:

  getCursor()

• getFont

  Font getFont()

  Gets the Font of this object.

  Returns:

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

  See Also:

  setFont(java.awt.Font)

• setFont

  void setFont(Font f)

  Sets the Font of this object.

  Parameters:

  f - the new Font for the object

  See Also:

  getFont()

• getFontMetrics

  FontMetrics getFontMetrics(Font f)

  Gets the FontMetrics of this object.

  Parameters:

  f - the Font

  Returns:

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

  See Also:

  getFont()

• isEnabled

  boolean isEnabled()

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

  Returns:

  true if object is enabled; otherwise, false

  See Also:

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

• setEnabled

  void setEnabled(boolean b)

  Sets the enabled state of the object.

  Parameters:

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

  See Also:

  isEnabled()

• isVisible

  boolean isVisible()

  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.

  Returns:

  true if object is visible; otherwise, false

  See Also:

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

• setVisible

  void setVisible(boolean b)

  Sets the visible state of the object.

  Parameters:

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

  See Also:

  isVisible()

• isShowing

  boolean isShowing()

  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).

  Returns:

  true if object is showing; otherwise, false

• contains

  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()

• getLocationOnScreen

  Point getLocationOnScreen()

  Returns the location of the object on the screen.

  Returns:

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

  See Also:

  getBounds(), getLocation()

• getLocation

  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 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

  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()

• getBounds

  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(java.awt.Point)

• setBounds

  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()

• getSize

  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.

  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

  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()

• getAccessibleAt

  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

• isFocusTraversable

  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 AccessibleStateSets.

  Returns:

  true if object can accept focus; otherwise false

  See Also:

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

• requestFocus

  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()

• addFocusListener

  void addFocusListener(FocusListener l)

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

  Parameters:

  l - the focus listener

  See Also:

  removeFocusListener(java.awt.event.FocusListener)

• removeFocusListener

  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(java.awt.event.FocusListener)