Java javax.swing.plaf.synth Class SynthTextAreaUI（JDK8）

Constructor Detail

• SynthTextAreaUI

  public SynthTextAreaUI()

Method Detail

• createUI

  public static ComponentUI createUI(JComponent ta)

  Creates a UI object for a JTextArea.

  Parameters:

  ta - a text area

  Returns:

  the UI object

• installDefaults

  protected void installDefaults()

  Initializes component properties, such as font, foreground, background, caret color, selection color, selected text color, disabled text color, and border color. 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.

  Overrides:

  installDefaults in class BasicTextAreaUI

  See Also:

  BasicTextUI.uninstallDefaults(), BasicTextUI.installUI(javax.swing.JComponent)

• uninstallDefaults

  protected void uninstallDefaults()

  Sets the component properties that have not been explicitly overridden to null. A property is considered overridden if its current value is not a UIResource.

  Overrides:

  uninstallDefaults in class BasicTextUI

  See Also:

  BasicTextUI.installDefaults(), BasicTextUI.uninstallUI(javax.swing.JComponent)

• getContext

  public SynthContext getContext(JComponent c)

  Returns the Context for the specified component.

  Specified by:

  getContext in interface SynthUI

  Parameters:

  c - Component requesting SynthContext.

  Returns:

  SynthContext describing component.

• update

  public void update(Graphics g,
                     JComponent c)

  Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the paint(SynthContext,Graphics) method.

  In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the paint method.

  Overrides:

  update in class BasicTextUI

  Parameters:

  g - the Graphics object used for painting

  c - the component being painted

  See Also:

  paint(SynthContext,Graphics)

• paint

  protected void paint(SynthContext context,
                       Graphics g)

  Paints the specified component.

  Parameters:

  context - context for the component being painted

  g - the Graphics object used for painting

  See Also:

  update(Graphics,JComponent)

• paintBackground

  protected void paintBackground(Graphics g)

  Paints a background for the view. This will only be called if isOpaque() on the associated component is true. The default is to paint the background color of the component. Overridden to do nothing.

  Overrides:

  paintBackground in class BasicTextUI

  Parameters:

  g - the graphics context

• paintBorder

  public void paintBorder(SynthContext context,
                          Graphics g,
                          int x,
                          int y,
                          int w,
                          int h)

  Paints the border.

  Specified by:

  paintBorder in interface SynthUI

  Parameters:

  context - a component context

  g - Graphics to paint on

  x - the X coordinate

  y - the Y coordinate

  w - width of the border

  h - height of the border

• propertyChange

  protected void propertyChange(PropertyChangeEvent evt)

  This method gets called when a bound property is changed on the associated JTextComponent. This is a hook which UI implementations may change to reflect how the UI displays bound properties of JTextComponent subclasses. This is implemented to rebuild the View when the WrapLine or the WrapStyleWord property changes.

  Overrides:

  propertyChange in class BasicTextAreaUI

  Parameters:

  evt - the property change event