[Interest] Dynamically generating a states and transitions array in javascript?

[Robert Voinea]

On Monday 03 December 2012 15:40:51 Mark wrote:
> On Wed, Nov 28, 2012 at 4:16 AM, Mark <markg85 at gmail.com> wrote:
> > Op 26 nov. 2012 22:11 schreef "Mark" <markg85 at gmail.com> het volgende:
> >> Hi,
> >> 
> >> I have a states array in QML that looks like this:
> >>     states: [
> >>     
> >>         State {
> >>         
> >>             name: "icon"
> >> 
> >>             PropertyChanges { target: viewContainer; source:
> >> "views/IconView.qml" }
> >> 
> >>         },
> >>         State {
> >>         
> >>             name: "list"
> >> 
> >>             PropertyChanges { target: viewContainer; source:
> >> "views/LView.qml" }
> >> 
> >>         },
> >>         State {
> >>         
> >>             name: "tree"
> >> 
> >>             PropertyChanges { target: viewContainer; source:
> >> "views/TreeView.qml" }
> >> 
> >>         }
> >>     
> >>     ]
> >> 
> >> That works just fine, but i want to do it more dynamically. I want to
> >> read the contents of the folder "views" and add a state entry for each
> >> item that i fine. Reading the folder and getting the filename isn't an
> >> issue, but i'm kinda puzzled how to build up a states array in
> >> javascript.
> >> 
> >> This is an pseudo code example:
> >> buildstates.js
> >> 
> >> var stateArray = ... construct the states based on based on the
> >> content of a folder ...
> >> 
> >> main.qml
> >> import "buildstates.js" as BuildStates
> >> 
> >> Item{
> >> 
> >>     width: 800
> >>     height: 600
> >>     states: BuildStates.stateArray
> >> 
> >> }
> >> 
> >> I want to do the same for transitions.
> >> But how do i do the JavaScript part? Or is there another way to build
> >> up a dynamic states/transitions array? Or is there a C++ way for this?
> >> 
> >> Cheers,
> >> Mark
> > 
> > Anyone..?
> 
> 2nd try. Anyone?
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Try Component.create()

I have not tried this approach, but for dynamic creation of QML elements that 
is the way.

In C++ land... 

You'd have to use QDeclarativeComponent::create to generate states/transitions 
and then assign then to your QML Item... but first you'd have to identify the 
item... a way to do that is setting objectName from within QML and then use 
QObject introspection to find the item.

Also, you have to be careful about ownership (who "owns" the newly created 
components?)

Again...I haven't tried either of these methods.

-- 
Robert Voinea
IT Specialist
+4 0740 467 262

Don't take life too seriously. You'll never get out of it alive.
(Elbert Hubbard)
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