Object
- VAppearances

public class VAppearances extends Object

This class keeps track of macOS appearances and provides access to their attributes. The attributes of an appearance of interest to Java applications are the values of system colors, which are context dependent.
On macOS 10.14 and later, there are four standard appearances, but only two appear to be used: one for light mode and one for dark mode. Previously, there was just one standard appearance. The standard appearances are identified using standard names.
The system color values depend upon the selected appearance. Some system color values also depend on the selected accent color option, the selected highlight color option, and whether the increase contrast accessibility option is enabled. This context is represented as an instance of AppearanceSettings.
AppKit applications are notified of changes to system colors in two ways. Some changes use a system color change notification or an accessibility option change notification. Others invoke the viewDidChangeEffectiveAppearance method on NSView instances. To ensure that this class has the current data, the implementation of this NSView method should provide the NSAppearance object to the native function VAppearances_updateAppearance(NSAppearance *).
AppKit uses instances of NSAppearance in a tricky way. At any one time, there is a current NSAppearance object for each of the standard appearance names. However, at various times, new instances are created that replace the previous instances. This trickery is not important to Java, as Java identifies appearances by their standard names. The current NSAppearance is determined as needed using the name.

Nested Classes
	Modifier and Type	Class and Description
	AppearanceChangeEvent	`static class` AppearanceChangeEvent A change event that identifies a newly available appearance. `static class` AppearanceChangeEvent A change event that identifies a newly available appearance. See Also: Serialized Form

Fields
	Modifier and Type	Field and Description
	aquaAppearance	`static String` aquaAppearance The name of the light Aqua appearance public static final String aquaAppearance The name of the light Aqua appearance See Also: Constant Field Values
	darkAquaAppearance	`static String` darkAquaAppearance The name of the dark Aqua appearance public static final String darkAquaAppearance The name of the dark Aqua appearance See Also: Constant Field Values
	vibrantDarkAppearance	`static String` vibrantDarkAppearance The name of the vibrant dark appearance public static final String vibrantDarkAppearance The name of the vibrant dark appearance See Also: Constant Field Values
	vibrantLightAppearance	`static String` vibrantLightAppearance The name of the vibrant light appearance public static final String vibrantLightAppearance The name of the vibrant light appearance See Also: Constant Field Values

Static Methods
	Modifier and Type	Static Method and Description
	addChangeListener	`static void` addChangeListener(ChangeListener listener) Register a change listener to be called when an appearance with a new name becomes known. public static void addChangeListener(ChangeListener listener) Register a change listener to be called when an appearance with a new name becomes known. All invocations of the listener are performed on the AWT event dispatching thread. The event, an instance of `VAppearances.AppearanceChangeEvent`, provides the object representing the appearance. Parameters: `listener` - The listener to be registered.
	addEffectiveAppearanceChangeListener	`static void` addEffectiveAppearanceChangeListener(ChangeListener listener) Register a change listener to be called when the application effective appearance is changed, for example, from light to dark or vice versa. public static void addEffectiveAppearanceChangeListener(ChangeListener listener) Register a change listener to be called when the application effective appearance is changed, for example, from light to dark or vice versa. The concept of an application effective appearance was introduced in macOS 10.14. This listener is also called when a system property changes that may affect the appearance system colors, such as the user specified accent color or highlight color. All invocations of the listener are performed on the AWT event dispatching thread. Parameters: `listener` - The listener to be registered.
	addEffectiveAppearanceChangeRunner	`static void` addEffectiveAppearanceChangeRunner(Runnable r) Register a handler to be called when the application effective appearance is changed, for example, from light to dark or vice versa. public static void addEffectiveAppearanceChangeRunner(Runnable r) Register a handler to be called when the application effective appearance is changed, for example, from light to dark or vice versa. The concept of an application effective appearance was introduced in macOS 10.14. The handler is also called when a system property changes that may affect the appearance system colors, such as the user specified accent color or highlight color. All invocations of the handler are performed on the AWT event dispatching thread. Parameters: `r` - The listener to be registered.
	getAppearance	`static VAppearance` getAppearance(String appearanceName) Return an object representing the specified appearance. public static VAppearance getAppearance(String appearanceName) throws IOException Return an object representing the specified appearance. Parameters: `appearanceName` - The appearance name. Returns: an object representing the associated appearance. Throws: `IOException` - if the appearance is not defined or not available.
	getAppearanceSettings	`static AppearanceSettings` getAppearanceSettings() Return the current appearance settings. public static AppearanceSettings getAppearanceSettings() throws IOException Return the current appearance settings. Appearance settings are settings whose values may influence the system colors. Throws: `IOException`
	getApplicationEffectiveAppearance	`static VAppearance` getApplicationEffectiveAppearance() Return an object representing the current effective appearance of the application and providing access to its attributes. public static VAppearance getApplicationEffectiveAppearance() throws IOException Return an object representing the current effective appearance of the application and providing access to its attributes. Returns: an object representing the associated appearance. Throws: `IOException` - if the appearance is not defined or not available, or if the data could not be obtained.
	removeChangeListener	`static void` removeChangeListener(ChangeListener listener) Unregister a previously registered change listener. public static void removeChangeListener(ChangeListener listener) Unregister a previously registered change listener. Parameters: `listener` - The listener to be unregistered.
	removeEffectiveAppearanceChangeListener	`static void` removeEffectiveAppearanceChangeListener(ChangeListener listener) Unregister a previously registered change listener. public static void removeEffectiveAppearanceChangeListener(ChangeListener listener) Unregister a previously registered change listener. Parameters: `listener` - The listener to be unregistered.
	removeEffectiveAppearanceChangeRunner	`static void` removeEffectiveAppearanceChangeRunner(Runnable r) Unregister a previously registered change handler. public static void removeEffectiveAppearanceChangeRunner(Runnable r) Unregister a previously registered change handler. Parameters: `r` - The handler to be unregistered.
	setApplicationAppearance	`static void` setApplicationAppearance(String appearanceName) Set the application appearance. public static void setApplicationAppearance(String appearanceName) throws IOException Set the application appearance. If not null, the application appearance supersedes the system appearance in determining the application effective appearance. Parameters: `appearanceName` - The name of the appearance, or null to cause the application to inherit its appearance from the system appearance. Throws: `IOException` - if the appearance is not defined.
	setDebugFlag	`static void` setDebugFlag(boolean b) public static void setDebugFlag(boolean b)

- Methods inherited from class Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Class VAppearances

Methods inherited from class Object