[Gambas-user] Emulating wizard Back/Next navigation

Thu Dec 11 22:17:39 CET 2008

Can you try to work a sample??

On Thu, Dec 11, 2008 at 3:04 PM, nando <nando_f at ...951...> wrote:
> To go back, you have to 'undo' all the things needed to properly go forward.
> So, in form5 (ie step5) you would have code to run to 'undo' what you did to
> get to step6...so when step6 has to go back, you'll run step5's 'undo' code.
>
> something psuedo like...
> IF 'BACK' was clicked THEN
>  hide form (the current form pointed to by your pointer which is Form6)
>  DEC your array pointer (which is now for Form5)
>  run the sub called UNDO
>  unhide form (the current form pointed to is now Form5)
> Endif
>
>
> ---------- Original Message -----------
> From: "M0E Lnx" <m0e.lnx at ...626...>
> To: "mailing list for gambas users" <gambas-user at lists.sourceforge.net>
> Sent: Thu, 11 Dec 2008 14:50:38 -0600
> Subject: Re: [Gambas-user] Emulating wizard Back/Next navigation
>
>> Exactly.
>>
>> The forward navigation depends on the user input, so it could jump
>> from Form1 to Form3 and then to Form2 ans do on...
>>
>> So if we leave a footprint in the array, I think it *should* be easy
>> to reverse the process indeed sort of like an "undo" process.
>>
>> But I'm not sure exactly what the best way to do the reverse is...
>> should I index the array? or try to find the current form in the array
>> and then just use the current forms.index in the array - 1 ?
>>
>> I've been fidling with this for a while... and it works perfecly in my
>> mind... but can't really make it work on the IDE :(
>>
>> On Thu, Dec 11, 2008 at 2:23 PM, Simonart Dominique
>> <simonart.dominique at ...11...> wrote:
>> > M0E Lnx a écrit :
>> >> I have to say, the array idea makes more sense to me, simply because
>> >> otherwise, it'll be hard to tell the next and back buttons which sub
>> >> to run.
>> >>
>> >> I have tried an array, but object array rather than string array.
>> >>
>> >> The idea is that every form that gets opened leaves a footprint in
>> >> this object array
>> >> for instance, the form's open() event would have something like this
>> >>
>> >> IF ArrNav.find(me) = -1 THEN ArrNav.Add(me)
>> >>
>> >> this makes reverse navigation possible by indexing the array or a
>> >> similar method. However, I am not able to work out all the bugs
>> >> resulting from this because it gets crazy when you try to move back,
>> >> then forward... then back... ends up in a crash almost every time
>> >>
>> >> Can someone work out a sample I can use?
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> On Thu, Dec 11, 2008 at 6:20 PM, nando <nando_f at ...951...> wrote:
>> >>> Perhaps the following ideas...
>> >>> Every step in the wizard has an associated form for whatever it does for that step.
>> >>> Every form has a SUB for 'backwards' and 'forwards so that
>> >>> when NEXT is clicked, the forwards code runs, which is whatever
>> >>> is required for moving to the next form (ie: perform work, verify info,
>> >>> hide form, the activate 'next' form)
>> >>> when BACK is clicked, the backwards code runs, which is whatever to
>> >>> undo this step (if needed), hide form, activate 'back' form.
>> >>> Each form knows how to go back one step, and go forward one step.
>> >>> You would have to tell the Next and BAck buttons which forwards and backwards
>> >>> sub to run...you could place in NEXT.tag and BACK.tag the form or info required
>> >>> to properly run the correct code.  This would be modular so each form takes
>> >>> care of things.
>> >>> Or, the list of wizard steps could be in a global string array with the name
>> >>> of the form and simply step through the index.
>> >>> -Fernando
>> >>>
>> >>>
>> >>> ---------- Original Message -----------
>> >>> From: "M0E Lnx" <m0e.lnx at ...626...>
>> >>> To: "mailing list for gambas users" <gambas-user at ...66...et>
>> >>> Sent: Wed, 10 Dec 2008 20:39:45 +0000
>> >>> Subject: [Gambas-user] Emulating wizard Back/Next navigation
>> >>>
>> >>>> So I set myself to create a program that acts like a wizard, but chose
>> >>>> not to use the wizard object because well, there is just too many
>> >>>> variables here, and there is more than one way to get to the end,
>> >>>> Depending on user input.
>> >>>>
>> >>>> So what I did was create a navigation tool bar at the bottom of FMain
>> >>>> this toolbar has a BACK, EXIT, and a NEXT button.
>> >>>>
>> >>>> I have a workspace object above it which will host other forms via
>> >>>> each forms .Reparent method.
>> >>>>
>> >>>> Can anyone suggest a way to make reverse and forward navigation on such a setup?
>> >>>>
>> >>>> I have created a small project what I'm trying to do... See attachment
>> >>>>
>> >>>> Any help is appreciated
>> >>>>
>> >>>> Thanks
>> >>> ------- End of Original Message -------
>> >>>
>> >>>
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>> >>
>> >
>> > I think BACK has to be only an "undo" process, and NEXT is
>> > the logical next state depending on the datas already
>> > collected. If 2 forms could result from an actual status,
>> > then you have to review the logical chain.
>> >
>> > my two cents :)
>> > Dominique Simonart
>> >
>> >
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