[Xerte] use of isFunc and passing of parameters

[johnathan.kemp at ntlworld.com]

I have attached a zipped up sample xerte project.

If you unzip it and open it in Xerte you will be able to see what I am referring to. 

The use of href="asfunction:_level0.engine.navToPage,destPageName", appears to be setting the value of args[0] such that the value of the passed parameter when using navToPage(pageName) is ignored.

The only solution I have found is to set args[0] in the script that calls the function  and then to pass args[0] as the parameter, e.g.

args[0] = hsData.hotspot[icon.parentNode.index()].destination;
navToPage(args[0]);

This does not feel right. I don't understand what it is that the hyperlink approach is doing that is affecting the receipt of the passed parameter.

Any ideas would be most welcome.

Kind regards

Johnathan

---- Dave Burnett <d_b_burnett at hotmail.com> wrote: 
> 
> 
> Do you have a sample file I could take a peek at?
> 
> Dave
> 
> ----------------------------------------
> > Date: Sun, 18 Apr 2010 22:33:38 +0100
> > From: johnathan.kemp at ntlworld.com
> > To: xerte at lists.nottingham.ac.uk
> > Subject: Re: [Xerte] use of isFunc and passing of parameters
> >
> > Just to clarify my first posting.
> >
> > I originally tested the second method, that of calling the function from a script e.g. navToPage(parameter1,parameter2,parameter3), but found that only parameter 1 was passed through to the function as args[0]. args[1] and args[2] were undefined. However this still left me with the situation where if I had two wizards.
> >
> > The routed hotspot wizard that called the function from a script using navToPage(destPageName)
> >
> > and
> >
> > The routed text wizard that called the function using href="asfunction:_level0.engine.navToPage,destPageName"
> >
> > Pages created with the routed hotspot wizard work fine until a page based on the routed text wizard is used to redirect the user to a page based on the routed hotspot wizard. At which point the args[0] from the routed text page appears to persist so that the routed hotspot page effectively redirects to itself, rather than the page name passed to it.
> >
> > The only solution appears to redefine args[0] to the destination page and then call navToPage(destPageName)
> >
> > I hope this makes things a bit clearer.
> >
> > Any ideas as to what is happening here and how to modify things so that the parameter is passed correctly, without the work around would be much appreciated.
> >
> > Kind regards
> >
> > Johnathan
> >
> > ---- johnathan.kemp at ntlworld.com wrote:
> >> I am developing a couple of page wizards, both of which provide the capability to define exit points from the page.
> >>
> >> The first is a text page that allows you to define hyperlinks to other pages in the project. This is supported by a script where isFunc = 1.
> >>
> >> I am calling it with
> >>
> >> Routed Tab.
> >>
> >> The destination page name, in this case rtFinal, is received as args[0] in the script navToPage. It appears only possible to pass one parameter.
> >>
> >> I have a second wizard based on the hotspot in which any hotspot can have a destination page assigned to it. I have a similar function script in this wizard which is called by the script that runs when the hotspot is clicked on.
> >>
> >> This script calls the function by navToPage(parameter1,parameter2,parameter3)
> >> The results are received by the script in args[0],args[1],args[2]
> >>
> >> All has worked well when the pages work in isolation, but once the text page has been run this then appears to define the args array at a level that dominates over the hotspot page. The only way I can get this to work is if I set args[0] before I call the function and then pass args[0] as a parameter, otherwise it picks up the value of args[0] set by the text page.
> >>
> >> Can anyone shed any light on what is going on here?
> >> Do I need to declare a new array args at the start of every page?
> >> How would you operate two functions in a page if every function is going to handle its parameters as the same array args[]?
> >>
> >> Kind regards
> >>
> >> Johnathan
> >> _______________________________________________
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> >> Xerte at lists.nottingham.ac.uk
> >> http://lists.nottingham.ac.uk/mailman/listinfo/xerte
> >
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