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Components.utils.import('resource://greasemonkey/util.js');
const EXPORTED_SYMBOLS = ['windowIsClosed'];
var Cu = Components.utils;
/*
Accessing windows that are closed can be dangerous after
http://bugzil.la/695480 . This routine takes care of being careful to not
trigger any of those broken edge cases.
*/
function windowIsClosed(aWin) {
try {
// If isDeadWrapper (Firefox 15+ only) tells us the window is dead.
if (Cu.isDeadWrapper && Cu.isDeadWrapper(aWin)) {
return true;
}
// If we can access the .closed property and it is true, or there is any
// problem accessing that property.
try {
if (aWin.closed) return true;
} catch (e) {
return true;
}
} catch (e) {
Cu.reportError(e);
// Failsafe. In case of any failure, destroy the command to avoid leaks.
return true;
}
return false;
}
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