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6759311: RepaintManager casts Tookit to SunToolkit without instanceof check

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Check type of Toolkit before casting.

Reviewed-by: alexp
This commit is contained in:
Roman Kennke 2008-10-15 15:55:19 +02:00
parent 671a2de6c7
commit 5c08fa0e79
1 changed files with 16 additions and 6 deletions
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22
jdk/src/share/classes/javax/swing/RepaintManager.java
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@ -1305,9 +1305,12 @@ public class RepaintManager
if (doubleBufferingEnabled && !nativeDoubleBuffering) {
switch (bufferStrategyType) {
case BUFFER_STRATEGY_NOT_SPECIFIED:
if (((SunToolkit)Toolkit.getDefaultToolkit()).
useBufferPerWindow()) {
paintManager = new BufferStrategyPaintManager();
Toolkit tk = Toolkit.getDefaultToolkit();
if (tk instanceof SunToolkit) {
SunToolkit stk = (SunToolkit) tk;
if (stk.useBufferPerWindow()) {
paintManager = new BufferStrategyPaintManager();
}
}
break;
case BUFFER_STRATEGY_SPECIFIED_ON:
@ -1329,9 +1332,16 @@ public class RepaintManager
private void scheduleProcessingRunnable(AppContext context) {
if (processingRunnable.markPending()) {
SunToolkit.getSystemEventQueueImplPP(context).
postEvent(new InvocationEvent(Toolkit.getDefaultToolkit(),
processingRunnable));
Toolkit tk = Toolkit.getDefaultToolkit();
if (tk instanceof SunToolkit) {
SunToolkit.getSystemEventQueueImplPP(context).
postEvent(new InvocationEvent(Toolkit.getDefaultToolkit(),
processingRunnable));
} else {
Toolkit.getDefaultToolkit().getSystemEventQueue().
postEvent(new InvocationEvent(Toolkit.getDefaultToolkit(),
processingRunnable));
}
}
}