/// <summary>
/// Asynchronously invoke a Javascript method on this display.
/// </summary>
/// <param name="sFunction">The name of the global function to call in the JS.</param>
/// <param name="tArguments">A list of parameters to pass.</param>
public void AsyncCallGlobalFunction(String sFunction, params JSValue[] tArguments)
{
// If we do not have an active web control.
if (ActiveControl == null)
{
Log.Write("Cannot call method on display (" + this.ToString() + ") which does not have a web visual.", Authority.AUTHORITY_LOG_SOURCE, Log.Type.AppError);
return;
}
// FIXME ASAP
// THIS IS VERY SLOW BECAUSE IT USES SYNC COMMUNICATION TO GET THE OBJECT TO CALL
// BUT APPARENTLY THIS IS THE ONLY WAY TO DO IT
// http://forums.awesomium.com/viewtopic.php?f=4&t=1167&p=1470&hilit=CallJavascriptFunction#p1470
// THE WAY I AM GOING TO SOLVE THIS FOR NOW IS TO CONVERT ALL THE ARGS TO A JS STRING AND EXECUTE IT.
// FIXME: Make me properly Async.
// TODO: Test my little converter function.. its probably crap!
StringBuilder pString = new StringBuilder();
if (tArguments != null)
{
for (int i = 0, n = tArguments.Length; i < n; ++i)
{
pString.Append(ToJSON(tArguments[i]));
if (i < (n - 1))
{
pString.Append(",");
}
}
}
var s = pString.ToString();
// Push it to the dispatcher (we need to be in the calling thread).
ActiveControl.Dispatcher.BeginInvoke((Action) delegate()
{
try
{
if (ActiveControl == null || !ActiveControl.IsProcessCreated)
{
return;
}
var sJavascript = @"if ('" + sFunction + @"' in window) {" + sFunction + @"(" + s + @"); }
else { }"; // Authority.log('" + sFunction + @" function not found.');
//Console.WriteLine(sJavascript);
ActiveControl.ExecuteJavascript(sJavascript);
}
catch (Exception e)
{
// Just drop exceptions.. icky..
}
});
}