Exrin | Demo Xamarin Forms MVVM Framework | Form library

When working with the Exrin Isolates approach you define the stacks in each Isolater. How do you combine it to work with a MasterDetailContainer? For example if I want a menu in the old approach I would create a ViewContainer and pass it a stack for the menu and another one for the pages, but with Isolates I'll have a lot of stacks. how should I build the ViewContainer or maybe should I still have only one main stack and use the Isolates only to isolate views and viewmodels?

Context

I am discovering step by step Exrin infrastructure. I explored that there are many ready to use infra element to implement command execution in background. Among those I see IsBusyDelay, VisualState.IsBusy, Timeout message, etc. I also know that Exrin does not depend on Xamarin.Forms, so I suppose, no real visual implementation should be provided by Exrin, that very last step remains on me. (which is cool, let me decide the UI experience)

In my ViewModel I set IsBusyDelay = 1000;. The background task is started by Execution.ViewModelExecute(... my task here ..., currently 5000msec delay )

Question

I suppose now I have to implement somewhere a handler(s) or override(s) which will be called automatically, and implement some visual UX to show and hide the a busy/inprogress UX feedback. I just do not know where and how...

Context

I am using the ExrinSampleMobileApp from the Exrin repository.

Question

How can I set the main and detail tab's title?

I tried to set the appropriate view's title with no effect (DetaiView and MainView)

In our app there is a master-detail container as main view container. We would like to have the tabbed page as the detail page of the master-detail container, so that the user is able to perform the navigation via both the menu and tab bar. Is there any way to achieve this with Exrin? As far as we can see, there is a support for master-detail page and for tabbed page separately. How to combine this pages together?

I'm looking to create animations with Exrin. I understand the MVVM framework aspect of it requires that the View owns the animations, but firing these animations initially is something I'm unsure of.

I do know that attaching to UI events is a bit of a hot button issue because then commands and events might exist together.

Does Exrin have a way of dealing with animations that isn't touched on in the documentation, should I attach animations to the UI Events, or should I go with something external like attached behaviors?

I'm thinking about upgrading from Exirn 1.x to 2.0.0. I read the Exrin 2.0.0 quick start, but it doesn't mention the changes. From what I can tell from the quick start project, there was a movement away from the grouping of projects based on Framework/Views/Logic/Bootstrapper/OS Level Impletementation.

What other changes occurred that I may need to know moving forward while upgrading?

And is it worth changing over to the new project layout implementation? It does appear to be easier to create and manage, but I'm worried about the lack of project separation leading to poor design. Will this be a personal preference or is there a benefit to switching that manifests itself in the update?

Within Exrin, using the normal hierarchy of ViewModel having access to the IModel, The Model having access to the IService, and Operations commonly having access to the IModel yet being called from the ViewModel, what is the proper use of methods and interactions within each scope?

For example, I need to clear a table in my SQLite database on navigating to a page. I have an IRepositoryService that contains all my methods for interacting with our database. My Model has a ClearUserInputTables method that calls a few different methods within the IRepositoryService.

I could either override the OnAppearing method (may likely change it to a different point in the life cycle) within the ViewModel to call the Model.ClearUserInputTables method or I could create an Operation that has access to the Model to do the same thing. Which is favored in Exrin?

Maybe I need a better understanding of the purpose of Operations. I read up on Operation Separation (basically used for navigation), but am unsure if it should be used for other things such as this (calling Model methods from the ViewModel).

From an Exrin design standpoint, should each database model have their own Service?

I find that I may need to check the same thing within the database in multiple MainModels. I figured I would create a Service for these database models to do these repeated operations and have the a service for a MainModel not only implement its own IService interface but also inherit from these database model services.

How is the binding between ModelState and VisualState changed from one way to two way?

In the Exrin introduction on YouTube and in this SO answer, it is stated that there is a binding between the ModelState and the VisualState (specifically ModelState -> VisualState). It is also stated that the binding can be changed from one way to two way.

I did some looking around and did find a BindingType enum with the values being OneWay and TwoWay, but I was unable to find where to utilize these.