/// <summary>
/// Creates an appropriate ViewModel for a type of component parameter, and the parameter is taken as the model.
/// Throws an exception if can't create the ViewModel.
/// </summary>
/// <param name="component">Quest Component that will be a model for a ViewModel instance.</param>
/// <returns></returns>
public static AbstractComponentViewModel CreateComponentViewModel(AbstractQuestComponent component)
{
if (component is null)
{
throw new ArgumentNullException(nameof(component));
}
AbstractComponentViewModel componentViewModel = null;
switch (component.GetType().Name)
{
case nameof(DescriptionComponent):
var descriptionComponent = component as DescriptionComponent;
var descriptionViewModel = new DescriptionComponentViewModel(descriptionComponent);
componentViewModel = descriptionViewModel;
break;
case nameof(ProgressComponent):
var progressComponent = component as ProgressComponent;
var progressViewModel = new ProgressComponentViewModel(progressComponent);
componentViewModel = progressViewModel;
break;
default:
throw new ArgumentException($"Can't create ViewModel for {component.GetType().FullName}.");
}
return(componentViewModel);
}
void SetDescriptionComponentBindings(DescriptionComponentViewModel descriptionViewModel, DetailQuestView detailQuestView)
{
if (descriptionViewModel is null)
{
throw new ArgumentNullException(nameof(descriptionViewModel));
}
if (detailQuestView is null)
{
throw new ArgumentNullException(nameof(detailQuestView));
}
detailQuestView.TitleEntry.IsVisible = true;
detailQuestView.DescriptionEntry.IsVisible = true;
var TitleTextBinding = new Binding
{
Source = descriptionViewModel,
Path = nameof(descriptionViewModel.Title),
Mode = BindingMode.TwoWay
};
detailQuestView.TitleEntry.SetBinding(Entry.TextProperty, TitleTextBinding);
var DescriptionTextBinding = new Binding
{
Source = descriptionViewModel,
Path = nameof(descriptionViewModel.Description),
Mode = BindingMode.TwoWay
};
detailQuestView.DescriptionEntry.SetBinding(Entry.TextProperty, DescriptionTextBinding);
}
