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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Tango.MachineStudio.Common.Navigation
{
/// <summary>
/// Represents an object which can abort the navigation from it.
/// </summary>
public interface INavigationBlocker
{
/// <summary>
/// Called before the navigation system navigates from this object.
/// Return false to abort the navigation.
/// </summary>
/// <returns></returns>
Task<bool> OnNavigateOutRequest();
/// <summary>
/// Called before the navigation system navigates back from this object.
/// Return false to abort the navigation.
/// </summary>
/// <returns></returns>
Task<bool> OnNavigateBackRequest();
}
}
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