# Class AbstractColorChooserPanel

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPanel
javax.swing.colorchooser.AbstractColorChooserPanel

All Implemented Interfaces:
  `ImageObserver, MenuContainer, Serializable, Accessible`

public abstract class AbstractColorChooserPanel extends JPanel
This is the abstract superclass for color choosers. If you want to add a new color chooser panel into a `JColorChooser`, subclass this class.

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`.

## Nested Class Summary

### Nested classes/interfaces declared in class JPanel

`JPanel.AccessibleJPanel`

### Nested classes/interfaces declared in class JComponent

`JComponent.AccessibleJComponent`

### Nested classes/interfaces declared in class Container

`Container.AccessibleAWTContainer`

### Nested classes/interfaces declared in class Component

`Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy`

## Field Summary

Fields
Modifier and Type
Field
Description
`static final String`
`TRANSPARENCY_ENABLED_PROPERTY`
Identifies that the transparency of the color (alpha value) can be selected

### Fields declared in class JComponent

`listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

### Fields declared in class Component

`accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

### Fields declared in interface ImageObserver

`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

## Constructor Summary

Constructors
Modifier
Constructor
Description
`protected`
`AbstractColorChooserPanel()`
Constructor for subclasses to call.

## Method Summary

Modifier and Type
Method
Description
`protected abstract void`
`buildChooser()`
Builds a new chooser panel.
`protected Color`
`getColorFromModel()`
Returns the color that is currently selected.
`ColorSelectionModel`
`getColorSelectionModel()`
Returns the model that the chooser panel is editing.
`int`
`getDisplayedMnemonicIndex()`
Provides a hint to the look and feel as to the index of the character in `getDisplayName` that should be visually identified as the mnemonic.
`abstract String`
`getDisplayName()`
Returns a string containing the display name of the panel.
`abstract Icon`
`getLargeDisplayIcon()`
Returns the large display icon for the panel.
`int`
`getMnemonic()`
Provides a hint to the look and feel as to the `KeyEvent.VK` constant that can be used as a mnemonic to access the panel.
`abstract Icon`
`getSmallDisplayIcon()`
Returns the small display icon for the panel.
`void`
`installChooserPanel(JColorChooser enclosingChooser)`
Invoked when the panel is added to the chooser.
`boolean`
`isColorTransparencySelectionEnabled()`
Gets whether color chooser panel allows to select the transparency (alpha value) of a color.
`void`
`paint(Graphics g)`
Draws the panel.
`void`
`setColorTransparencySelectionEnabled(boolean b)`
Sets whether color chooser panel allows to select the transparency (alpha value) of a color.
`void`
`uninstallChooserPanel(JColorChooser enclosingChooser)`
Invoked when the panel is removed from the chooser.
`abstract void`
`updateChooser()`
Invoked automatically when the model's state changes.

### Methods declared in class JPanel

`getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI`

### Methods declared in class JComponent

`addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update`

### Methods declared in class Container

`add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree`

### Methods declared in class Component

`action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle`

### Methods declared in class Object

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

## Field Details

### TRANSPARENCY_ENABLED_PROPERTY

public static final String TRANSPARENCY_ENABLED_PROPERTY
Identifies that the transparency of the color (alpha value) can be selected

See Also:
  - Constant Field Values

## Constructor Details

### AbstractColorChooserPanel

protected AbstractColorChooserPanel()
Constructor for subclasses to call.

## Method Details

### updateChooser

public abstract void updateChooser()
Invoked automatically when the model's state changes. It is also called by `installChooserPanel` to allow you to set up the initial state of your chooser. Override this method to update your `ChooserPanel`.

### buildChooser

protected abstract void buildChooser()
Builds a new chooser panel.

### getDisplayName

public abstract String getDisplayName()
Returns a string containing the display name of the panel.

Returns:
  the name of the display panel

### getMnemonic

public int getMnemonic()
Provides a hint to the look and feel as to the `KeyEvent.VK` constant that can be used as a mnemonic to access the panel. A return value <= 0 indicates there is no mnemonic.

The return value here is a hint, it is ultimately up to the look and feel to honor the return value in some meaningful way.

This implementation returns 0, indicating the `AbstractColorChooserPanel` does not support a mnemonic, subclasses wishing a mnemonic will need to override this.

Returns:
  KeyEvent.VK constant identifying the mnemonic; <= 0 for no mnemonic
Since:
  1.4
See Also:
  - `getDisplayedMnemonicIndex()`

### getDisplayedMnemonicIndex

public int getDisplayedMnemonicIndex()
Provides a hint to the look and feel as to the index of the character in `getDisplayName` that should be visually identified as the mnemonic. The look and feel should only use this if `getMnemonic` returns a value > 0.

The return value here is a hint, it is ultimately up to the look and feel to honor the return value in some meaningful way. For example, a look and feel may wish to render each `AbstractColorChooserPanel` in a `JTabbedPane`, and further use this return value to underline a character in the `getDisplayName`.

This implementation returns -1, indicating the `AbstractColorChooserPanel` does not support a mnemonic, subclasses wishing a mnemonic will need to override this.

Returns:
  Character index to render mnemonic for; -1 to provide no visual identifier for this panel.
Since:
  1.4
See Also:
  - `getMnemonic()`

### getSmallDisplayIcon

public abstract Icon getSmallDisplayIcon()
Returns the small display icon for the panel.

Returns:
  the small display icon

### getLargeDisplayIcon

public abstract Icon getLargeDisplayIcon()
Returns the large display icon for the panel.

Returns:
  the large display icon

### installChooserPanel

public void installChooserPanel(JColorChooser enclosingChooser)
Invoked when the panel is added to the chooser. If you override this, be sure to call `super`.

Parameters:
  `enclosingChooser` - the chooser to which the panel is to be added
Throws:
  `RuntimeException` - if the chooser panel has already been installed

### uninstallChooserPanel

public void uninstallChooserPanel(JColorChooser enclosingChooser)
Invoked when the panel is removed from the chooser. If override this, be sure to call `super`.

Parameters:
  `enclosingChooser` - the chooser from which the panel is to be removed

### getColorSelectionModel

public ColorSelectionModel getColorSelectionModel()
Returns the model that the chooser panel is editing.

Returns:
  the `ColorSelectionModel` model this panel is editing

### getColorFromModel

protected Color getColorFromModel()
Returns the color that is currently selected.

Returns:
  the `Color` that is selected

### setColorTransparencySelectionEnabled

@BeanProperty(description="Sets the transparency of a color selection on or off.") public void setColorTransparencySelectionEnabled(boolean b)
Sets whether color chooser panel allows to select the transparency (alpha value) of a color. This method fires a property-changed event, using the string value of `TRANSPARENCY_ENABLED_PROPERTY` as the name of the property.

The value is a hint and may not be applicable to all types of chooser panel.

The default value is `true`.

Parameters:
  `b` - true if the transparency of a color can be selected
Since:
  9
See Also:
  - `isColorTransparencySelectionEnabled()`

### isColorTransparencySelectionEnabled

public boolean isColorTransparencySelectionEnabled()
Gets whether color chooser panel allows to select the transparency (alpha value) of a color.

Returns:
  true if the transparency of a color can be selected
Since:
  9
See Also:
  - `setColorTransparencySelectionEnabled(boolean)`

### paint

public void paint(Graphics g)
Draws the panel.

Overrides:
  `paint` in class `JComponent`
Parameters:
  `g` - the `Graphics` object
See Also:
  - `JComponent.paintComponent(Graphics)`
  - `JComponent.paintBorder(Graphics)`
  - `JComponent.paintChildren(Graphics)`
  - `JComponent.getComponentGraphics(Graphics)`
  - `JComponent.repaint(long, int, int, int, int)`