javax.swing.plaf.basic
Class BasicTableHeaderUI

java.lang.Object
  extended byjavax.swing.plaf.ComponentUI
      extended byjavax.swing.plaf.TableHeaderUI
          extended byjavax.swing.plaf.basic.BasicTableHeaderUI

public class BasicTableHeaderUI
extends TableHeaderUI

BasicTableHeaderUI implementation

Author:
Alan Chung, Philip Milne

Nested Class Summary
 class BasicTableHeaderUI.MouseInputHandler
          This inner class is marked "public" due to a compiler bug.
 
Field Summary
protected  JTableHeader header
          The JTableHeader that is delegating the painting to this UI.
protected  MouseInputListener mouseInputListener
           
protected  CellRendererPane rendererPane
           
private static Cursor resizeCursor
           
 
Constructor Summary
BasicTableHeaderUI()
           
 
Method Summary
private  Dimension createHeaderSize(long width)
           
protected  MouseInputListener createMouseInputListener()
          Creates the mouse listener for the JTable.
static ComponentUI createUI(JComponent h)
          Returns an instance of the UI delegate for the specified component.
private  int getHeaderHeight()
           
private  Component getHeaderRenderer(int columnIndex)
           
 Dimension getMaximumSize(JComponent c)
          Return the maximum size of the header.
 Dimension getMinimumSize(JComponent c)
          Return the minimum size of the header.
 Dimension getPreferredSize(JComponent c)
          Return the preferred size of the header.
protected  void installDefaults()
          Initialize JTableHeader properties, e.g. font, foreground, and background.
protected  void installKeyboardActions()
          Register all keyboard actions on the JTableHeader.
protected  void installListeners()
          Attaches listeners to the JTableHeader.
 void installUI(JComponent c)
          Configures the specified component appropriate for the look and feel.
 void paint(Graphics g, JComponent c)
          Paints the specified component appropriate for the look and feel.
private  void paintCell(Graphics g, Rectangle cellRect, int columnIndex)
           
protected  void uninstallDefaults()
           
protected  void uninstallKeyboardActions()
           
protected  void uninstallListeners()
           
 void uninstallUI(JComponent c)
          Reverses configuration which was done on the specified component during installUI.
private  int viewIndexForColumn(TableColumn aColumn)
           
 
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 Detail

resizeCursor

private static Cursor resizeCursor

header

protected JTableHeader header
The JTableHeader that is delegating the painting to this UI.


rendererPane

protected CellRendererPane rendererPane

mouseInputListener

protected MouseInputListener mouseInputListener
Constructor Detail

BasicTableHeaderUI

public BasicTableHeaderUI()
Method Detail

createMouseInputListener

protected MouseInputListener createMouseInputListener()
Creates the mouse listener for the JTable.


createUI

public static ComponentUI createUI(JComponent h)
Description copied from class: ComponentUI
Returns an instance of the UI delegate for the specified component. Each subclass must provide its own static createUI method that returns an instance of that UI delegate subclass. If the UI delegate subclass is stateless, it may return an instance that is shared by multiple components. If the UI delegate is stateful, then it should return a new instance per component. The default implementation of this method throws an error, as it should never be invoked.


installUI

public void installUI(JComponent c)
Description copied from class: ComponentUI
Configures the specified component appropriate 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 any 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 JTableHeader 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 JTableHeader.


installKeyboardActions

protected void installKeyboardActions()
Register all keyboard actions on the JTableHeader.


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()

uninstallListeners

protected void uninstallListeners()

uninstallKeyboardActions

protected void uninstallKeyboardActions()

paint

public void paint(Graphics g,
                  JComponent c)
Description copied from class: ComponentUI
Paints the specified component appropriate for the look and feel. This method is invoked from the ComponentUI.update method when the specified component is being painted. Subclasses should override this method and use the specified Graphics object to render the content of the component.

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)

getHeaderRenderer

private Component getHeaderRenderer(int columnIndex)

paintCell

private void paintCell(Graphics g,
                       Rectangle cellRect,
                       int columnIndex)

viewIndexForColumn

private int viewIndexForColumn(TableColumn aColumn)

getHeaderHeight

private int getHeaderHeight()

createHeaderSize

private Dimension createHeaderSize(long width)

getMinimumSize

public Dimension getMinimumSize(JComponent c)
Return the minimum size of the header. The minimum width is the sum of the minimum widths of each column (plus inter-cell spacing).

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 header. The preferred height is the maximum of the preferred heights of all of the components provided by the header renderers. The preferred width is the sum of the preferred widths of each column (plus inter-cell spacing).

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
See Also:
JComponent.getPreferredSize(), LayoutManager.preferredLayoutSize(java.awt.Container)

getMaximumSize

public Dimension getMaximumSize(JComponent c)
Return the maximum size of the header. The maximum width is the sum of the maximum widths of each column (plus inter-cell spacing).

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)