/**
* We should always grab both keyboard and pointer to control event flow on popups. This also
* simplifies synthetic grab implementation. The active grab overrides activated automatic grab.
*/
public boolean grabInput() {
if (grabLog.isLoggable(Level.FINE)) {
grabLog.log(Level.FINE, "Grab input on {0}", new Object[] {String.valueOf(this)});
}
XToolkit.awtLock();
try {
if (XAwtState.getGrabWindow() == this && XAwtState.isManualGrab()) {
grabLog.fine(" Already Grabbed");
return true;
}
// 6273031: PIT. Choice drop down does not close once it is right clicked to show a popup menu
// remember previous window having grab and if it's not null ungrab it.
XBaseWindow prevGrabWindow = XAwtState.getGrabWindow();
final int eventMask =
(int)
(ButtonPressMask
| ButtonReleaseMask
| EnterWindowMask
| LeaveWindowMask
| PointerMotionMask
| ButtonMotionMask);
final int ownerEvents = 1;
int ptrGrab =
XlibWrapper.XGrabPointer(
XToolkit.getDisplay(),
getContentWindow(),
ownerEvents,
eventMask,
GrabModeAsync,
GrabModeAsync,
None,
(XWM.isMotif() ? XToolkit.arrowCursor : None),
CurrentTime);
// Check grab results to be consistent with X server grab
if (ptrGrab != GrabSuccess) {
XlibWrapper.XUngrabPointer(XToolkit.getDisplay(), CurrentTime);
XAwtState.setGrabWindow(null);
grabLog.fine(" Grab Failure - mouse");
return false;
}
int keyGrab =
XlibWrapper.XGrabKeyboard(
XToolkit.getDisplay(),
getContentWindow(),
ownerEvents,
GrabModeAsync,
GrabModeAsync,
CurrentTime);
if (keyGrab != GrabSuccess) {
XlibWrapper.XUngrabPointer(XToolkit.getDisplay(), CurrentTime);
XlibWrapper.XUngrabKeyboard(XToolkit.getDisplay(), CurrentTime);
XAwtState.setGrabWindow(null);
grabLog.fine(" Grab Failure - keyboard");
return false;
}
if (prevGrabWindow != null) {
prevGrabWindow.ungrabInputImpl();
}
XAwtState.setGrabWindow(this);
grabLog.fine(" Grab - success");
return true;
} finally {
XToolkit.awtUnlock();
}
}