Good afternoon all,
I’m trying to implement setTimeout() (to mimic the web browser function).
My function gets called and is working correctly except for one issue.
I can’t figure out how to construct the “argument object” when you call a function with parameters.
I’m beginning to feel like the guy in the Monty Python script where he goes looking for the argument clinic… ;)
Here’s the script:
setTimeout( function(pb){ pb.Text = "Goodbye World"; }, 2000 );
My function is called. I get parameters, which include a QScriptValue object that represents the function call, and one with the delay value (2000). The function has a parameter (pb). How do I get the argument object/script context for the anonymous function?
QScriptValue setTimeout( QScriptContext* ctx, QScriptEngine* eng )
{
qDebug() << ctx->backtrace();
QScriptValue timer( QScriptValue::UndefinedValue );
QScriptValue argDelay = ctx->argument( 1 );
if ( argDelay.isNumber() )
{
uint32_t delay = argDelay.toUInt32();
QScriptValue argFunction = ctx->argument( 0 );
if ( argFunction.isFunction() )
{
QScriptValueIterator it( argFunction );
while ( it.hasNext() )
{
it.next();
qDebug() << " property:" << it.name() << ": " << it.value().toString();
}
}
}
}
output:
12:41:21: Qt Debug: (”<native>(function (pb) { pb.Text = “Goodbye World”; }, 2000) at -1”, “<global>() at 17”)
12:41:21: Qt Debug: property: “arguments” : “null”
12:41:21: Qt Debug: property: “callee” : “”
12:41:21: Qt Debug: property: “caller” : “null”
12:41:21: Qt Debug: property: “length” : “1”
12:41:21: Qt Debug: property: “name” : “”
I examined the “arguments” property but that doesn’t seem to be it.
Suggestions are welcome.
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