Is the "full" disposing needed for a page unload?
Would it be enough to have a light version of the dispose code for the
page unload case?
Sebastian Werner schrieb:
Dietrich Streifert schrieb:
Thank you Sebastian!
Now I think I got the path:
qx.core.Object has a class method called dispose and an instance method
called dispose.
Every instance of qx.core.Object is stored in the class attribute
qx.Class._db at instantiation time (by the constructor):
qx.core.Object._db.push(this);
The onunload event of the document fires the disposition of all
qx.core.Objects in the _db array by calling qx.Class.dispose. The
codepart with does the dispose is:
for (var i=qx.core.Object._db.length-1; i>=0; i--)
{
vObject = qx.core.Object._db[i];
if (vObject != null)
{
// logger.debug("Disposing: " + vObject);
vObject.dispose();
qx.core.Object._db[i] = null;
}
}
so the the dispose method of each instance of qx.core.Object (and its
subclasses) gets called.
In the instance dispose method the object properties and the object
userdata instances get deleted.
At the bottom of the dispose method there is a code part which I don't
understand:
// Delete Entry from Object DB
qx.core.Object._db[this._hashCode] = null;
delete qx.core.Object._db[this._hashCode];
So first the object reference is nulled and then it is deleted?
Yes, and mhh, this is not needed. The first (nullify) should be enough.
Sebastian
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Mit freundlichen Grüßen
Dietrich Streifert
Visionet GmbH
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