AccessibleComponent (Java Platform SE 8 )

All Known Subinterfaces:

AccessibleExtendedComponent

All Known Implementing Classes:

AbstractButton.AccessibleAbstractButton, Applet.AccessibleApplet, Box.AccessibleBox, Box.Filler.AccessibleBoxFiller, Button.AccessibleAWTButton, Canvas.AccessibleAWTCanvas, CellRendererPane.AccessibleCellRendererPane, Checkbox.AccessibleAWTCheckbox, CheckboxMenuItem.AccessibleAWTCheckboxMenuItem, Choice.AccessibleAWTChoice, Component.AccessibleAWTComponent, Container.AccessibleAWTContainer, Dialog.AccessibleAWTDialog, Frame.AccessibleAWTFrame, JApplet.AccessibleJApplet, JButton.AccessibleJButton, JCheckBox.AccessibleJCheckBox, JCheckBoxMenuItem.AccessibleJCheckBoxMenuItem, JColorChooser.AccessibleJColorChooser, JComboBox.AccessibleJComboBox, JComponent.AccessibleJComponent, JDesktopPane.AccessibleJDesktopPane, JDialog.AccessibleJDialog, JEditorPane.AccessibleJEditorPane, JEditorPane.AccessibleJEditorPaneHTML, JEditorPane.JEditorPaneAccessibleHypertextSupport, JFileChooser.AccessibleJFileChooser, JFrame.AccessibleJFrame, JInternalFrame.AccessibleJInternalFrame, JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon, JLabel.AccessibleJLabel, JLayeredPane.AccessibleJLayeredPane, JList.AccessibleJList, JList.AccessibleJList.AccessibleJListChild, JMenu.AccessibleJMenu, JMenuBar.AccessibleJMenuBar, JMenuItem.AccessibleJMenuItem, JOptionPane.AccessibleJOptionPane, JPanel.AccessibleJPanel, JPasswordField.AccessibleJPasswordField, JPopupMenu.AccessibleJPopupMenu, JProgressBar.AccessibleJProgressBar, JRadioButton.AccessibleJRadioButton, JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem, JRootPane.AccessibleJRootPane, JScrollBar.AccessibleJScrollBar, JScrollPane.AccessibleJScrollPane, JSeparator.AccessibleJSeparator, JSlider.AccessibleJSlider, JSpinner.AccessibleJSpinner, JSplitPane.AccessibleJSplitPane, JTabbedPane.AccessibleJTabbedPane, JTable.AccessibleJTable, JTable.AccessibleJTable.AccessibleJTableCell, JTableHeader.AccessibleJTableHeader, JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry, JTextArea.AccessibleJTextArea, JTextComponent.AccessibleJTextComponent, JTextField.AccessibleJTextField, JToggleButton.AccessibleJToggleButton, JToolBar.AccessibleJToolBar, JToolTip.AccessibleJToolTip, JTree.AccessibleJTree, JTree.AccessibleJTree.AccessibleJTreeNode, JViewport.AccessibleJViewport, JWindow.AccessibleJWindow, Label.AccessibleAWTLabel, List.AccessibleAWTList, List.AccessibleAWTList.AccessibleAWTListChild, Menu.AccessibleAWTMenu, MenuBar.AccessibleAWTMenuBar, MenuComponent.AccessibleAWTMenuComponent, MenuItem.AccessibleAWTMenuItem, Panel.AccessibleAWTPanel, PopupMenu.AccessibleAWTPopupMenu, Scrollbar.AccessibleAWTScrollBar, ScrollPane.AccessibleAWTScrollPane, TextArea.AccessibleAWTTextArea, TextComponent.AccessibleAWTTextComponent, TextField.AccessibleAWTTextField, Window.AccessibleAWTWindow
```
public interface 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.

See Also:

Accessible, Accessible.getAccessibleContext(), AccessibleContext, AccessibleContext.getAccessibleComponent()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`addFocusListener(FocusListener l)` Adds the specified focus 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.
`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.
`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 focus 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)` Sets 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 so that it has width and height.
`void`	`setVisible(boolean b)` Sets the visible state of the object.

- 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)

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Interface AccessibleComponent

Method Summary

Method Detail

getBackground

setBackground

getForeground

setForeground

getCursor

setCursor

getFont

setFont

getFontMetrics

isEnabled

setEnabled

isVisible

setVisible

isShowing

contains

getLocationOnScreen

getLocation

setLocation

getBounds

setBounds

getSize

setSize

getAccessibleAt

isFocusTraversable

requestFocus

addFocusListener

removeFocusListener