Interface AccessibleComponent
- 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,- Translator,- 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:
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Method SummaryModifier and TypeMethodDescriptionvoidAdds the specified focus listener to receive focus events from this component.booleanChecks 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.Returns theAccessiblechild, if one exists, contained at the local coordinatePoint.Gets the background color of this object.Gets the bounds of this object in the form of aRectangleobject.Gets the cursor of this object.getFont()Gets the font of this object.Gets theFontMetricsof this object.Gets the foreground color of this object.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 the location of the object on the screen.getSize()Returns the size of this object in the form of aDimensionobject.booleanDetermines if the object is enabled.booleanReturns whether this object can accept focus or not.booleanDetermines if the object is showing.booleanDetermines if the object is visible.voidRemoves the specified focus listener so it no longer receives focus events from this component.voidRequests focus for this object.voidSets the background color of this object.voidSets the bounds of this object in the form of aRectangleobject.voidSets the cursor of this object.voidsetEnabled(boolean b) Sets the enabled state of the object.voidSets the font of this object.voidSets the foreground color of this object.voidsetLocation(Point p) Sets the location of the object relative to the parent.voidResizes this object so that it has width and height.voidsetVisible(boolean b) Sets the visible state of the object.
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Method Details- 
getBackgroundColor getBackground()Gets the background color of this object.- Returns:
- the background color, if supported, of the object; otherwise,
         null
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setBackgroundSets the background color of this object.- Parameters:
- c- the new color for the background
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getForegroundColor getForeground()Gets the foreground color of this object.- Returns:
- the foreground color, if supported, of the object; otherwise,
         null
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setForegroundSets the foreground color of this object.- Parameters:
- c- the new color for the foreground
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getCursorCursor getCursor()Gets the cursor of this object.- Returns:
- the cursor, if supported, of the object; otherwise, null
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setCursorSets the cursor of this object.- Parameters:
- cursor- the new cursor for the object
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getFontFont getFont()Gets the font of this object.- Returns:
- the font, if supported, for the object; otherwise, null
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setFontSets the font of this object.- Parameters:
- f- the new font for the object
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getFontMetricsGets theFontMetricsof this object.- Parameters:
- f- the font for which font metrics is to be obtained
- Returns:
- the FontMetrics, if supported, the object; otherwise,null
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isEnabledboolean isEnabled()Determines if the object is enabled. Objects that are enabled will also have theAccessibleState.ENABLEDstate set in theirAccessibleStateSets.- Returns:
- trueif object is enabled; otherwise,- false
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setEnabledvoid setEnabled(boolean b) Sets the enabled state of the object.- Parameters:
- b- if- true, enables this object; otherwise, disables it
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isVisibleboolean 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, useisShowing()Objects that are visible will also have the AccessibleState.VISIBLEstate set in theirAccessibleStateSets.- Returns:
- trueif object is visible; otherwise,- false
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setVisiblevoid setVisible(boolean b) Sets the visible state of the object.- Parameters:
- b- if- true, shows this object; otherwise, hides it
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isShowingboolean isShowing()Determines if the object is showing. This is determined by checking the visibility of the object and its ancestors. Note: this will returntrueeven if the object is obscured by another (for example, it is underneath a menu that was pulled down).- Returns:
- trueif object is showing; otherwise,- false
 
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containsChecks 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:
- trueif object contains point; otherwise- false
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getLocationOnScreenPoint getLocationOnScreen()Returns the location of the object on the screen.- Returns:
- the location of the object on screen; nullif this object is not on the screen
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getLocationPoint 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 Pointrepresenting the top-left corner of the object's bounds in the coordinate space of the screen;nullif this object or its parent are not on the screen
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setLocationSets the location of the object relative to the parent.- Parameters:
- p- the new position for the top-left corner
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getBoundsRectangle getBounds()Gets the bounds of this object in the form of aRectangleobject. The bounds specify this object's width, height, and location relative to its parent.- Returns:
- A rectangle indicating this component's bounds; nullif this object is not on the screen.
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setBoundsSets the bounds of this object in the form of aRectangleobject. The bounds specify this object's width, height, and location relative to its parent.- Parameters:
- r- rectangle indicating this component's bounds
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getSizeDimension getSize()Returns the size of this object in the form of aDimensionobject. Theheightfield of theDimensionobject contains this object's height, and thewidthfield of theDimensionobject contains this object's width.- Returns:
- A Dimensionobject that indicates the size of this component;nullif this object is not on the screen
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setSizeResizes this object so that it has width and height.- Parameters:
- d- The dimension specifying the new size of the object
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getAccessibleAtReturns theAccessiblechild, if one exists, contained at the local coordinatePoint.- Parameters:
- p- The point relative to the coordinate system of this object
- Returns:
- the Accessible, if it exists, at the specified location; otherwisenull
 
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isFocusTraversableboolean isFocusTraversable()Returns whether this object can accept focus or not. Objects that can accept focus will also have theAccessibleState.FOCUSABLEstate set in theirAccessibleStateSets.- Returns:
- trueif object can accept focus; otherwise- false
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requestFocusvoid 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:
 
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addFocusListenerAdds the specified focus listener to receive focus events from this component.- Parameters:
- l- the focus listener
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removeFocusListenerRemoves the specified focus listener so it no longer receives focus events from this component.- Parameters:
- l- the focus listener
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