SynthTextAreaUI (Java Platform SE 8 )
Keywords: javax.swing.plaf.synth.SynthTextAreaUI class
Date: 2026-01-21

javax.swing.plaf.synth

## Class SynthTextAreaUI

- java.lang.Object
- - javax.swing.plaf.ComponentUI
  - - javax.swing.plaf.TextUI
    - - javax.swing.plaf.basic.BasicTextUI
      - - javax.swing.plaf.basic.BasicTextAreaUI
        - - javax.swing.plaf.synth.SynthTextAreaUI

- All Implemented Interfaces:
    SynthConstants, SynthUI, ViewFactory

      public class SynthTextAreaUI
      extends BasicTextAreaUI
      implements SynthUI

  Provides the look and feel for a plain text editor in the Synth look and feel. In this implementation the default UI is extended to act as a simple view factory.

  Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the `java.beans` package. Please see `XMLEncoder`.

  Since:
    1.7

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicTextUI

      `BasicTextUI.BasicCaret, BasicTextUI.BasicHighlighter`

  - ### Field Summary

    - ### Fields inherited from interface javax.swing.plaf.synth.SynthConstants

      `DEFAULT, DISABLED, ENABLED, FOCUSED, MOUSE_OVER, PRESSED, SELECTED`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SynthTextAreaUI()`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static ComponentUI` | `createUI(JComponent ta)` Creates a UI object for a JTextArea.
    `SynthContext` | `getContext(JComponent c)` Returns the Context for the specified component.
    `protected void` | `installDefaults()` Initializes component properties, such as font, foreground, background, caret color, selection color, selected text color, disabled text color, and border color.
    `protected void` | `paint(SynthContext context, Graphics g)` Paints the specified component.
    `protected void` | `paintBackground(Graphics g)` Paints a background for the view.
    `void` | `paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)` Paints the border.
    `protected void` | `propertyChange(PropertyChangeEvent evt)` This method gets called when a bound property is changed on the associated JTextComponent.
    `protected void` | `uninstallDefaults()` Sets the component properties that have not been explicitly overridden to `null`.
    `void` | `update(Graphics g, JComponent c)` Notifies this UI delegate to repaint the specified component.

    - ### Methods inherited from class javax.swing.plaf.basic.BasicTextAreaUI

      `create, getBaseline, getBaselineResizeBehavior, getMinimumSize, getPreferredSize, getPropertyPrefix`

    - ### Methods inherited from class javax.swing.plaf.basic.BasicTextUI

      `create, createCaret, createHighlighter, createKeymap, damageRange, damageRange, getComponent, getEditorKit, getKeymapName, getMaximumSize, getNextVisualPositionFrom, getRootView, getToolTipText, getVisibleEditorRect, installKeyboardActions, installListeners, installUI, modelChanged, modelToView, modelToView, paint, paintSafely, setView, uninstallKeyboardActions, uninstallListeners, uninstallUI, viewToModel, viewToModel`

    - ### Methods inherited from class javax.swing.plaf.ComponentUI

      `contains, getAccessibleChild, getAccessibleChildrenCount`

    - ### Methods inherited from class java.lang.Object

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

- - ### 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

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