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## javax.swing.plaf.basic
Class BasicButtonUI

    java.lang.Object
      javax.swing.plaf.ComponentUI
          javax.swing.plaf.ButtonUI
              javax.swing.plaf.basic.BasicButtonUI

Direct Known Subclasses:
  BasicToggleButtonUI, MetalButtonUI

    public class BasicButtonUI

extends ButtonUI

BasicButton implementation

Field Summary
`protected int` | `defaultTextIconGap`
`protected int` | `defaultTextShiftOffset`

Constructor Summary
`BasicButtonUI()`

Method Summary
`protected void` | `clearTextShiftOffset()`
`protected BasicButtonListener` | `createButtonListener(AbstractButton b)`
`static ComponentUI` | `createUI(JComponent c)`
`int` | `getDefaultTextIconGap(AbstractButton b)`
`Dimension` | `getMaximumSize(JComponent c)` Returns the specified component's maximum size appropriate for the look and feel.
`Dimension` | `getMinimumSize(JComponent c)` Returns the specified component's minimum size appropriate for the look and feel.
`Dimension` | `getPreferredSize(JComponent c)` Returns the specified component's preferred size appropriate for the look and feel.
`protected String` | `getPropertyPrefix()`
`protected int` | `getTextShiftOffset()`
`protected void` | `installDefaults(AbstractButton b)`
`protected void` | `installKeyboardActions(AbstractButton b)`
`protected void` | `installListeners(AbstractButton b)`
`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.
`protected void` | `paintButtonPressed(Graphics g, AbstractButton b)`
`protected void` | `paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, Rectangle textRect, Rectangle iconRect)`
`protected void` | `paintIcon(Graphics g, JComponent c, Rectangle iconRect)`
`protected void` | `paintText(Graphics g, AbstractButton b, Rectangle textRect, String text)` Method which renders the text of the current button.
`protected void` | `paintText(Graphics g, JComponent c, Rectangle textRect, String text)` As of Java 2 platform v 1.4 this method should not be used or overriden.
`protected void` | `setTextShiftOffset()`
`protected void` | `uninstallDefaults(AbstractButton b)`
`protected void` | `uninstallKeyboardActions(AbstractButton b)`
`protected void` | `uninstallListeners(AbstractButton b)`
`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 Detail

### defaultTextIconGap

    protected int defaultTextIconGap

### defaultTextShiftOffset

    protected int defaultTextShiftOffset

Constructor Detail

### BasicButtonUI

    public BasicButtonUI()

Method Detail

### createUI

    public static ComponentUI createUI(JComponent c)

### getPropertyPrefix

    protected String getPropertyPrefix()

### 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(AbstractButton b)

### installListeners

    protected void installListeners(AbstractButton b)

### installKeyboardActions

    protected void installKeyboardActions(AbstractButton b)

### 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()`

### uninstallKeyboardActions

    protected void uninstallKeyboardActions(AbstractButton b)

### uninstallListeners

    protected void uninstallListeners(AbstractButton b)

### uninstallDefaults

    protected void uninstallDefaults(AbstractButton b)

### createButtonListener

    protected BasicButtonListener createButtonListener(AbstractButton b)

### getDefaultTextIconGap

    public int getDefaultTextIconGap(AbstractButton b)

### 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)`

### paintIcon

    protected void paintIcon(Graphics g,
                             JComponent c,
                             Rectangle iconRect)

### paintText

    protected void paintText(Graphics g,
                             JComponent c,
                             Rectangle textRect,
                             String text)

  As of Java 2 platform v 1.4 this method should not be used or overriden. Use the paintText method which takes the AbstractButton argument.

### paintText

    protected void paintText(Graphics g,
                             AbstractButton b,
                             Rectangle textRect,
                             String text)

  Method which renders the text of the current button.

  Parameters:
    `g` - Graphics context
    `b` - Current button to render
    `textRect` - Bounding rectangle to render the text.
    `text` - String to render
  Since:
    1.4

### paintFocus

    protected void paintFocus(Graphics g,
                              AbstractButton b,
                              Rectangle viewRect,
                              Rectangle textRect,
                              Rectangle iconRect)

### paintButtonPressed

    protected void paintButtonPressed(Graphics g,
                                      AbstractButton b)

### clearTextShiftOffset

    protected void clearTextShiftOffset()

### setTextShiftOffset

    protected void setTextShiftOffset()

### getTextShiftOffset

    protected int getTextShiftOffset()

### getMinimumSize

    public Dimension getMinimumSize(JComponent c)

  Description copied from class: `ComponentUI`
  Returns the specified component's minimum size appropriate for the look and feel. If `null` is returned, the minimum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes `getPreferredSize` and returns that value.

  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)

  Description copied from class: `ComponentUI`
  Returns the specified component's preferred size appropriate for the look and feel. If `null` is returned, the preferred size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method returns `null`.

  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)

  Description copied from class: `ComponentUI`
  Returns the specified component's maximum size appropriate for the look and feel. If `null` is returned, the maximum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes `getPreferredSize` and returns that value.

  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)`

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