33 * implementations.
34 *
35 * There are two platform specific SurfaceManagerFactories in OpenJDK,
36 * UnixSurfaceManagerFactory and WindowsSurfaceManagerFactory.
37 * The actually used SurfaceManagerFactory is set by the respective platform
38 * GraphicsEnvironment implementations in the static initializer.
39 */
40 public abstract class SurfaceManagerFactory {
41
42 /**
43 * The single shared instance.
44 */
45 private static SurfaceManagerFactory instance;
46
47 /**
48 * Returns the surface manager factory instance. This returns a factory
49 * that has been set by {@link #setInstance(SurfaceManagerFactory)}.
50 *
51 * @return the surface manager factory
52 */
53 public synchronized static SurfaceManagerFactory getInstance() {
54
55 if (instance == null) {
56 throw new IllegalStateException("No SurfaceManagerFactory set.");
57 }
58 return instance;
59 }
60
61 /**
62 * Sets the surface manager factory. This may only be called once, and it
63 * may not be set back to {@code null} when the factory is already
64 * instantiated.
65 *
66 * @param factory the factory to set
67 */
68 public synchronized static void setInstance(SurfaceManagerFactory factory) {
69
70 if (factory == null) {
71 // We don't want to allow setting this to null at any time.
72 throw new IllegalArgumentException("factory must be non-null");
73 }
74
75 if (instance != null) {
76 // We don't want to re-set the instance at any time.
77 throw new IllegalStateException("The surface manager factory is already initialized");
78 }
79
80 instance = factory;
81 }
82
83 /**
84 * Creates a new instance of a VolatileSurfaceManager given any
85 * arbitrary SunVolatileImage. An optional context Object can be supplied
86 * as a way for the caller to pass pipeline-specific context data to
87 * the VolatileSurfaceManager (such as a backbuffer handle, for example).
88 */
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33 * implementations.
34 *
35 * There are two platform specific SurfaceManagerFactories in OpenJDK,
36 * UnixSurfaceManagerFactory and WindowsSurfaceManagerFactory.
37 * The actually used SurfaceManagerFactory is set by the respective platform
38 * GraphicsEnvironment implementations in the static initializer.
39 */
40 public abstract class SurfaceManagerFactory {
41
42 /**
43 * The single shared instance.
44 */
45 private static SurfaceManagerFactory instance;
46
47 /**
48 * Returns the surface manager factory instance. This returns a factory
49 * that has been set by {@link #setInstance(SurfaceManagerFactory)}.
50 *
51 * @return the surface manager factory
52 */
53 public static synchronized SurfaceManagerFactory getInstance() {
54
55 if (instance == null) {
56 throw new IllegalStateException("No SurfaceManagerFactory set.");
57 }
58 return instance;
59 }
60
61 /**
62 * Sets the surface manager factory. This may only be called once, and it
63 * may not be set back to {@code null} when the factory is already
64 * instantiated.
65 *
66 * @param factory the factory to set
67 */
68 public static synchronized void setInstance(SurfaceManagerFactory factory) {
69
70 if (factory == null) {
71 // We don't want to allow setting this to null at any time.
72 throw new IllegalArgumentException("factory must be non-null");
73 }
74
75 if (instance != null) {
76 // We don't want to re-set the instance at any time.
77 throw new IllegalStateException("The surface manager factory is already initialized");
78 }
79
80 instance = factory;
81 }
82
83 /**
84 * Creates a new instance of a VolatileSurfaceManager given any
85 * arbitrary SunVolatileImage. An optional context Object can be supplied
86 * as a way for the caller to pass pipeline-specific context data to
87 * the VolatileSurfaceManager (such as a backbuffer handle, for example).
88 */
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