Class BasicTableUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.TableUI

javax.swing.plaf.basic.BasicTableUI

Direct Known Subclasses:

SynthTableUI

public class BasicTableUI
extends TableUI

BasicTableUI implementation

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	BasicTableUI.FocusHandler	This class should be treated as a "protected" inner class.
class	BasicTableUI.KeyHandler	This class should be treated as a "protected" inner class.
class	BasicTableUI.MouseInputHandler	This class should be treated as a "protected" inner class.

Field Summary

Fields

Modifier and Type	Field	Description
protected FocusListener	focusListener	FocusListener that are attached to the JTable.
protected KeyListener	keyListener	KeyListener that are attached to the JTable.
protected MouseInputListener	mouseInputListener	MouseInputListener that are attached to the JTable.
protected CellRendererPane	rendererPane	The instance of CellRendererPane.
protected JTable	table	The instance of JTable.

Constructor Summary

Constructors

Constructor	Description
BasicTableUI()	Constructs a BasicTableUI.

Method Summary

Modifier and Type	Method	Description
protected FocusListener	createFocusListener()	Creates the focus listener for handling keyboard navigation in the JTable.
protected KeyListener	createKeyListener()	Creates the key listener for handling keyboard navigation in the JTable.
protected MouseInputListener	createMouseInputListener()	Creates the mouse listener for the JTable.
static ComponentUI	createUI(JComponent c)	Returns a new instance of BasicTableUI.
int	getBaseline(JComponent c, int width, int height)	Returns the baseline.
Component.BaselineResizeBehavior	getBaselineResizeBehavior(JComponent c)	Returns an enum indicating how the baseline of the component changes as the size changes.
Dimension	getMaximumSize(JComponent c)	Return the maximum size of the table.
Dimension	getMinimumSize(JComponent c)	Return the minimum size of the table.
Dimension	getPreferredSize(JComponent c)	Return the preferred size of the table.
protected void	installDefaults()	Initialize JTable properties, e.g. font, foreground, and background.
protected void	installKeyboardActions()	Register all keyboard actions on the JTable.
protected void	installListeners()	Attaches listeners to the JTable.
void	installUI(JComponent c)	Configures the specified component appropriately for the look and feel.
void	paint(Graphics g, JComponent c)	Paint a representation of the table instance that was set in installUI().
protected void	uninstallDefaults()	Uninstalls default properties.
protected void	uninstallKeyboardActions()	Unregisters keyboard actions.
protected void	uninstallListeners()	Unregisters listeners.
void	uninstallUI(JComponent c)	Reverses configuration which was done on the specified component during installUI.

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, update

Methods inherited from class java.lang.Object

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

Field Details

table

protected JTable table

The instance of JTable.

rendererPane

protected CellRendererPane rendererPane

The instance of CellRendererPane.

keyListener

protected KeyListener keyListener

KeyListener that are attached to the JTable.

focusListener

protected FocusListener focusListener

FocusListener that are attached to the JTable.

mouseInputListener

protected MouseInputListener mouseInputListener

MouseInputListener that are attached to the JTable.

Constructor Details

BasicTableUI

public BasicTableUI()

Constructs a BasicTableUI.

Method Details

createKeyListener

protected KeyListener createKeyListener()

Creates the key listener for handling keyboard navigation in the JTable.

Returns:

the key listener for handling keyboard navigation in the JTable

createFocusListener

protected FocusListener createFocusListener()

Creates the focus listener for handling keyboard navigation in the JTable.

Returns:

the focus listener for handling keyboard navigation in the JTable

createMouseInputListener

protected MouseInputListener createMouseInputListener()

Creates the mouse listener for the JTable.

Returns:

the mouse listener for the JTable

createUI

public static ComponentUI createUI(JComponent c)

Returns a new instance of BasicTableUI.

Parameters:

c - a component

Returns:

a new instance of BasicTableUI

installUI

public void installUI(JComponent c)

Description copied from class: ComponentUI

Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:

1. Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
2. Install a LayoutManager on the component if necessary.
3. Create/add any required sub-components to the component.
4. Create/install event listeners on the component.
5. Create/install a PropertyChangeListener on the component in order to detect and respond to component property changes appropriately.
6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
7. Initialize any appropriate instance data.

Overrides:

installUI in class ComponentUI

Parameters:

c - the component where this UI delegate is being installed

See Also:

• ComponentUI.uninstallUI(javax.swing.JComponent)
• JComponent.setUI(javax.swing.plaf.ComponentUI)
• JComponent.updateUI()

installDefaults

protected void installDefaults()

Initialize JTable properties, e.g. font, foreground, and background. The font, foreground, and background properties are only set if their current value is either null or a UIResource, other properties are set if the current value is null.

See Also:

• installUI(javax.swing.JComponent)

installListeners

protected void installListeners()

Attaches listeners to the JTable.

installKeyboardActions

protected void installKeyboardActions()

Register all keyboard actions on the JTable.

uninstallUI

public void uninstallUI(JComponent c)

Description copied from class: ComponentUI

Reverses configuration which was done on the specified component during installUI. This method is invoked when this UIComponent instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in installUI, being careful to leave the JComponent instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:

1. Remove any UI-set borders from the component.
2. Remove any UI-set layout managers on the component.
3. Remove any UI-added sub-components from the component.
4. Remove any UI-added event/property listeners from the component.
5. Remove any UI-installed keyboard UI from the component.
6. Nullify any allocated instance data objects to allow for GC.

Overrides:

uninstallUI in class ComponentUI

Parameters:

c - the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

See Also:

• ComponentUI.installUI(javax.swing.JComponent)
• JComponent.updateUI()

uninstallDefaults

protected void uninstallDefaults()

Uninstalls default properties.

uninstallListeners

protected void uninstallListeners()

Unregisters listeners.

uninstallKeyboardActions

protected void uninstallKeyboardActions()

Unregisters keyboard actions.

getBaseline

public int getBaseline(JComponent c,
 int width,
 int height)

Returns the baseline.

Overrides:

getBaseline in class ComponentUI

Parameters:

c - JComponent baseline is being requested for

width - the width to get the baseline for

height - the height to get the baseline for

Returns:

baseline or a value < 0 indicating there is no reasonable baseline

Throws:

NullPointerException - if c is null

IllegalArgumentException - if width or height is < 0

Since:

1.6

See Also:

• JComponent.getBaseline(int, int)

getBaselineResizeBehavior

public Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c)

Returns an enum indicating how the baseline of the component changes as the size changes.

Overrides:

getBaselineResizeBehavior in class ComponentUI

Parameters:

c - JComponent to return baseline resize behavior for

Returns:

an enum indicating how the baseline changes as the component size changes

Throws:

NullPointerException - if c is null

Since:

1.6

See Also:

• JComponent.getBaseline(int, int)

getMinimumSize

public Dimension getMinimumSize(JComponent c)

Return the minimum size of the table. The minimum height is the row height times the number of rows. The minimum width is the sum of the minimum widths of each column.

Overrides:

getMinimumSize in class ComponentUI

Parameters:

c - the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

• JComponent.getMinimumSize()
• LayoutManager.minimumLayoutSize(java.awt.Container)
• ComponentUI.getPreferredSize(javax.swing.JComponent)

getPreferredSize

public Dimension getPreferredSize(JComponent c)

Return the preferred size of the table. The preferred height is the row height times the number of rows. The preferred width is the sum of the preferred widths of each column.

Overrides:

getPreferredSize in class ComponentUI

Parameters:

c - the component whose preferred size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object containing given component's preferred size appropriate for the look and feel

See Also:

• JComponent.getPreferredSize()
• LayoutManager.preferredLayoutSize(java.awt.Container)

getMaximumSize

public Dimension getMaximumSize(JComponent c)

Return the maximum size of the table. The maximum height is the row heighttimes the number of rows. The maximum width is the sum of the maximum widths of each column.

Overrides:

getMaximumSize in class ComponentUI

Parameters:

c - the component whose maximum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

• JComponent.getMaximumSize()
• LayoutManager2.maximumLayoutSize(java.awt.Container)

paint

public void paint(Graphics g,
 JComponent c)

Paint a representation of the table instance that was set in installUI().

Overrides:

paint in class ComponentUI

Parameters:

g - the Graphics context in which to paint

c - the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

See Also:

• ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)