/ExpressInteropBinding/Microsoft.ServiceModel.Interop.ExtensionUtils/ConfigurationWizard/ViewModel/CertificatePageViewModel.cs

// <copyright file="BasicSettingsPageViewModel.cs" company="Microsoft Corporation">

// Copyright (c) Microsoft Corporation.  All rights reserved.

// </copyright>



namespace Microsoft.ServiceModel.Interop.ConfigurationWizard.ViewModel

{

    using System;

    using System.Collections.Generic;

    using System.Linq;

    using Microsoft.ServiceModel.Interop.ConfigurationWizard.Services;



    /// <summary>

    /// View model for the certificate selection view page

    /// </summary>

    public class CertificatePageViewModel : PageViewModelBase

    {

        private string storeLocation;

        private string store;

        private string certificate;

        private ICertificateStoreService certificateStore;

        private IEnumerable<string> certificates;



        /// <summary>

        /// Initializes a new instance of the CertificatePageViewModel class

        /// </summary>

        /// <param name="certificateStore">A valid instance of ICertificateStoreService for selecting an existing certificate</param>

        public CertificatePageViewModel(ICertificateStoreService certificateStore)

        {

            if (certificateStore == null)

            {

                throw new ArgumentNullException("certificateStore");

            }



            this.certificateStore = certificateStore;



            this.store = this.certificateStore.GetStores().First();

            this.storeLocation = this.certificateStore.GetStoreLocations().First();

            this.certificates = this.certificateStore.GetCertificates(this.storeLocation, this.store);

        }



        /// <summary>

        /// Gets the view display name

        /// </summary>

        public override string DisplayName

        {

            get { return "Certificate Selection"; }

        }



        /// <summary>

        /// Gets the list of certificate store locations

        /// </summary>

        public IEnumerable<string> StoreLocations

        {

            get { return this.certificateStore.GetStoreLocations(); }

        }



        /// <summary>

        /// Gets or sets the selected certificate store location

        /// </summary>

        public string StoreLocation

        {

            get

            {

                return this.storeLocation;

            }



            set

            {

                if (this.storeLocation != value)

                {

                    this.storeLocation = value;

                    this.OnStoreLocationChanged();

                }

            }

        }



        /// <summary>

        /// Gets the list of certificate stores

        /// </summary>

        public IEnumerable<string> Stores

        {

            get { return this.certificateStore.GetStores(); }

        }



        /// <summary>

        /// Gets or sets the selected certificate store

        /// </summary>

        public string Store

        {

            get

            {

                return this.store;

            }



            set

            {

                if (this.store != value)

                {

                    this.store = value;

                    this.OnStoreChanged();

                }

            }

        }



        /// <summary>

        /// Gets the list of certificates

        /// </summary>

        public IEnumerable<string> Certificates

        {

            get { return this.certificates; }

        }



        /// <summary>

        /// Gets or sets the selected certificate

        /// </summary>

        public string Certificate

        {

            get { return this.certificate; }

            set { SetValue(ref this.certificate, value, () => this.Certificate); }

        }



        internal override bool IsValid()

        {

            return !string.IsNullOrEmpty(this.Certificate);

        }



        private void OnStoreChanged()

        {

            this.certificates = this.certificateStore.GetCertificates(this.StoreLocation, this.Store);



            this.OnPropertyChanged(() => this.Store);

            this.OnPropertyChanged(() => this.Certificates);

        }



        private void OnStoreLocationChanged()

        {

            this.certificates = this.certificateStore.GetCertificates(this.StoreLocation, this.Store);



            this.OnPropertyChanged(() => this.StoreLocation);

            this.OnPropertyChanged(() => this.Certificates);

        }

    }

}