44
45 /**
46 * Implements Theme Support for Windows XP.
47 *
48 * @author Sergey Salishev
49 * @author Bino George
50 * @author Igor Kushnirskiy
51 */
52 public final class ThemeReader {
53
54 private static final Map<String, Long> widgetToTheme = new HashMap<>();
55
56 // lock for the cache
57 // reading should be done with readLock
58 // writing with writeLock
59 private static final ReadWriteLock readWriteLock =
60 new ReentrantReadWriteLock();
61 private static final Lock readLock = readWriteLock.readLock();
62 private static final Lock writeLock = readWriteLock.writeLock();
63
64 static void flush() {
65 writeLock.lock();
66 try {
67 // Close old themes.
68 for (Long value : widgetToTheme.values()) {
69 closeTheme(value.longValue());
70 }
71 widgetToTheme.clear();
72 } finally {
73 writeLock.unlock();
74 }
75 }
76
77 public static native boolean isThemed();
78
79 // this should be called only with writeLock held
80 private static Long getThemeImpl(String widget) {
81 Long theme = widgetToTheme.get(widget);
82 if (theme == null) {
83 int i = widget.indexOf("::");
84 if (i > 0) {
85 // We're using the syntax "subAppName::controlName" here, as used by msstyles.
86 // See documentation for SetWindowTheme on MSDN.
87 setWindowTheme(widget.substring(0, i));
88 theme = openTheme(widget.substring(i+2));
89 setWindowTheme(null);
90 } else {
91 theme = openTheme(widget);
92 }
93 widgetToTheme.put(widget, theme);
94 }
95 return theme;
96 }
97
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44
45 /**
46 * Implements Theme Support for Windows XP.
47 *
48 * @author Sergey Salishev
49 * @author Bino George
50 * @author Igor Kushnirskiy
51 */
52 public final class ThemeReader {
53
54 private static final Map<String, Long> widgetToTheme = new HashMap<>();
55
56 // lock for the cache
57 // reading should be done with readLock
58 // writing with writeLock
59 private static final ReadWriteLock readWriteLock =
60 new ReentrantReadWriteLock();
61 private static final Lock readLock = readWriteLock.readLock();
62 private static final Lock writeLock = readWriteLock.writeLock();
63
64 static volatile boolean xpStyleEnabled;
65
66 static void flush() {
67 writeLock.lock();
68 try {
69 // Close old themes.
70 for (Long value : widgetToTheme.values()) {
71 closeTheme(value.longValue());
72 }
73 widgetToTheme.clear();
74 } finally {
75 writeLock.unlock();
76 }
77 }
78
79 public static native boolean isThemed();
80
81 public static boolean isXPStyleEnabled() {
82 return xpStyleEnabled;
83 }
84
85 // this should be called only with writeLock held
86 private static Long getThemeImpl(String widget) {
87 Long theme = widgetToTheme.get(widget);
88 if (theme == null) {
89 int i = widget.indexOf("::");
90 if (i > 0) {
91 // We're using the syntax "subAppName::controlName" here, as used by msstyles.
92 // See documentation for SetWindowTheme on MSDN.
93 setWindowTheme(widget.substring(0, i));
94 theme = openTheme(widget.substring(i+2));
95 setWindowTheme(null);
96 } else {
97 theme = openTheme(widget);
98 }
99 widgetToTheme.put(widget, theme);
100 }
101 return theme;
102 }
103
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