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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.DI;
using Tango.SharedUI;
namespace Tango.MachineStudio.Common
{
/// <summary>
/// Represents a Machine Studio view model
/// </summary>
/// <seealso cref="Tango.SharedUI.ViewModel" />
/// <seealso cref="Tango.MachineStudio.Common.IStudioViewModel" />
public abstract class StudioViewModel : ViewModel, IStudioViewModel
{
private bool _isVisible;
/// <summary>
/// Gets or sets a value indicating whether this view model view's is visible.
/// </summary>
public bool IsVisible
{
get { return _isVisible; }
set { _isVisible = value; RaisePropertyChangedAuto(); }
}
/// <summary>
/// Initializes a new instance of the <see cref="StudioViewModel{Module}"/> class.
/// </summary>
public StudioViewModel() : base()
{
}
/// <summary>
/// Called when the user has navigated out of this view model.
/// </summary>
public virtual void OnNavigatedFrom()
{
IsVisible = false;
}
/// <summary>
/// Called when the user has navigated in to this view model.
/// </summary>
public virtual void OnNavigatedTo()
{
IsVisible = true;
}
/// <summary>
/// Called before the application is shutting down.
/// Return false to cancel the shutdown in case an important process is in progress.
/// </summary>
/// <returns></returns>
public virtual Task<bool> OnShutdownRequest()
{
return Task.FromResult(true);
}
/// <summary>
/// Called when application is shutting down.
/// </summary>
public virtual void OnShuttingDown()
{
}
/// <summary>
/// Called when the application has been started
/// </summary>
public virtual void OnApplicationStarted()
{
}
/// <summary>
/// Called when the application is ready and all modules are loaded.
/// </summary>
public abstract void OnApplicationReady();
}
/// <summary>
/// Represents a Machine Studio view model with a support for a view contract.
/// </summary>
/// <typeparam name="TView"></typeparam>
/// <seealso cref="Tango.SharedUI.ViewModel" />
public abstract class StudioViewModel<TView> : StudioViewModel where TView : IView
{
/// <summary>
/// Gets the view model's view.
/// </summary>
public TView View { get; private set; }
/// <summary>
/// Initializes a new instance of the <see cref="StudioViewModel{TView}"/> class.
/// </summary>
public StudioViewModel() : base()
{
TangoIOC.Default.GetInstanceWhenAvailable<TView>((view) =>
{
View = view;
OnViewAttached(view);
});
}
/// <summary>
/// Called when the view has been attached
/// </summary>
/// <param name="view">The view.</param>
protected virtual void OnViewAttached(TView view)
{
//Do Nothing.
}
}
}
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