<AWT Dev>  review request for 8066436: Minimize can cause window to disappear on osx
nakul.natu at oracle.com
Mon Mar 2 19:18:33 UTC 2015
Please review the fix for JDK 9.
CPlatformWindow set bounds using setBounds() which calls native function
nativeNSSetWindowBounds() -> calls the OSX function. After that ox
callbacks to java using deliverMoveresizeEvent() where the peer or
window associated with native window is notified of change of bounds.
In maximize() we need peer’s bound which are saved as normalBounds to
use them to unmaximize.
1. Customer creates window where the size width height is (1, 1)
2. setSize call is made (600,900) which starts the setBounds process
3. setExtendedState(MAXIMIZED) is called which calls maximize(). But the
callback for deliverMoveresizeEvent() has not yet processed and the the
bounds we get are earlier (1,1).
4. Window is maximized.
5. Now when we try to unmaximize or iconify the window the size is set
to (1,1) and we can’t see the window.
Even if we are using the bounds which are available (as the event
processing is asynchronous) this can cause lot of problems as the window
just disappears. Adding LWCToolkit.flushNativeSelectors(); just before
saving the bounds can get us the correct bounds which we are expecting.
Bug : https://bugs.openjdk.java.net/browse/JDK-8066436
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