/// <summary>
/// Wraps the specified view.
/// </summary>
/// <param name="view">The view.</param>
/// <param name="viewModelSource">The view model source containing the <c>ViewModel</c> property.</param>
/// <param name="wrapOptions">The wrap options.</param>
/// <returns>The <see cref="IViewModelWrapper" />.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="view" /> is <c>null</c>.</exception>
public IViewModelWrapper Wrap(IView view, object viewModelSource, WrapOptions wrapOptions)
{
Argument.IsNotNull("view", view);
Argument.IsNotNull("viewModelSource", viewModelSource);
if (!_wrappers.TryGetValue(view, out var wrapper))
{
try
{
// This is "sort of" a lock, we might recursively call this while we are
// creating the wrapper, so need to skip *while* we are creating it
_wrappers.Add(view, _tempObject);
#if XAMARIN || XAMARIN_FORMS
wrapper = new ViewModelWrapper(view);
#else
wrapper = CreateViewModelGrid(view, viewModelSource, wrapOptions);
#endif
}
finally
{
// Remove the temp object
_wrappers.Remove(view);
}
if (wrapper != null)
{
_wrappers.Add(view, wrapper);
}
}
return(wrapper);
}
/// <summary>
/// Wraps the specified view.
/// </summary>
/// <param name="view">The view.</param>
/// <param name="viewModelSource">The view model source containing the <c>ViewModel</c> property.</param>
/// <param name="wrapOptions">The wrap options.</param>
/// <returns>The <see cref="IViewModelWrapper" />.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="view" /> is <c>null</c>.</exception>
public IViewModelWrapper Wrap(IView view, object viewModelSource, WrapOptions wrapOptions)
{
Argument.IsNotNull("view", view);
Argument.IsNotNull("viewModelSource", viewModelSource);
#if XAMARIN || XAMARIN_FORMS
var viewModelWrapper = new ViewModelWrapper(view);
return(viewModelWrapper);
#else
return(CreateViewModelGrid(view, viewModelSource, wrapOptions));
#endif
}
/// <summary>
/// Wraps the specified view.
/// </summary>
/// <param name="view">The view.</param>
/// <param name="viewModelSource">The view model source containing the <c>ViewModel</c> property.</param>
/// <param name="wrapOptions">The wrap options.</param>
/// <returns>The <see cref="IViewModelWrapper" />.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="view" /> is <c>null</c>.</exception>
public IViewModelWrapper Wrap(IView view, object viewModelSource, WrapOptions wrapOptions)
{
Argument.IsNotNull("view", view);
Argument.IsNotNull("viewModelSource", viewModelSource);
#if XAMARIN
var viewModelWrapper = new ViewModelWrapper(view);
return viewModelWrapper;
#else
return CreateViewModelGrid(view, viewModelSource, wrapOptions);
#endif
}
public ViewModelWrapper ConstructViewModel(Type type)
{
var instance = Activator.CreateInstance(type);
var token = "token_" + _tokenCounter++;
var viewModelWrapper = new ViewModelWrapper {
ViewModel = instance, RefToken = token
};
_viewModelInstances[token] = viewModelWrapper;
foreach (var field in type.ObservableFields())
{
var localField = field; // Make sure closure doesn't change variable.
var fieldValue = (IObservable)localField.GetValue(instance);
fieldValue.Subscribe(newValue => AddPendingChange(localField.Name, newValue, token));
}
return(viewModelWrapper);
}
