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ViewModelContainer.cs
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ViewModelContainer.cs
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using System;
using System.Collections.Generic;
namespace SimplyMobile.Core
{
public static class ViewModelContainer
{
private static Dictionary<Guid, ViewModel> container;
private static Dictionary<Guid, ViewModel> Container
{
get { return container ?? (container = new Dictionary<Guid, ViewModel>()); }
}
/// <summary>
/// Get a view model.
/// </summary>
/// <param name="guid">GUID of the model.</param>
/// <returns>A view model object is successful, otherwise NULL</returns>
public static ViewModel Get(Guid guid)
{
return Container[guid];
}
public static ViewModel Get(string guid)
{
Guid id;
return Guid.TryParse (guid, out id) ? Container [id] : null;
}
public static ViewModel Pull(string guid)
{
Guid id;
return Guid.TryParse(guid, out id) ? Pull(id) : null;
}
/// <summary>
/// Pulls a view model from the container.
///
/// View model is removed from the container.
/// </summary>
/// <param name="guid">GUID of the model.</param>
public static ViewModel Pull(Guid guid)
{
ViewModel model = null;
if (Container.ContainsKey(guid))
{
model = Container[guid];
Container.Remove(guid);
}
return model;
}
public static Guid Push(ViewModel model)
{
var guid = Guid.NewGuid();
Container.Add(guid, model);
return guid;
}
}
}