WIP open a database

ModernKeePass/Pages/DatabaseViewPage.xaml.cs

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+using ModernKeePass.Common;
+using ModernKeePassLib;
+using ModernKeePassLib.Interfaces;
+using ModernKeePassLib.Keys;
+using ModernKeePassLib.Serialization;
+using Windows.Storage;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Navigation;
+using System.Linq;
+using System;
+
+// The Hub Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=321224
+
+namespace ModernKeePass.Pages
+{
+    /// <summary>
+    /// A page that displays a grouped collection of items.
+    /// </summary>
+    public sealed partial class DatabaseViewPage : Page
+    {
+        private NavigationHelper navigationHelper;
+        private ObservableDictionary defaultViewModel = new ObservableDictionary();
+        private PwDatabase _database = new PwDatabase();
+
+        /// <summary>
+        /// This can be changed to a strongly typed view model.
+        /// </summary>
+        public ObservableDictionary DefaultViewModel
+        {
+            get { return this.defaultViewModel; }
+        }
+
+        /// <summary>
+        /// NavigationHelper is used on each page to aid in navigation and 
+        /// process lifetime management
+        /// </summary>
+        public NavigationHelper NavigationHelper
+        {
+            get { return this.navigationHelper; }
+        }
+
+        public DatabaseViewPage()
+        {
+            this.InitializeComponent();
+            this.navigationHelper = new NavigationHelper(this);
+            this.navigationHelper.LoadState += navigationHelper_LoadState;
+
+        }
+        
+        /// <summary>
+        /// Populates the page with content passed during navigation.  Any saved state is also
+        /// provided when recreating a page from a prior session.
+        /// </summary>
+        /// <param name="sender">
+        /// The source of the event; typically <see cref="Common.NavigationHelper"/>
+        /// </param>
+        /// <param name="e">Event data that provides both the navigation parameter passed to
+        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
+        /// a dictionary of state preserved by this page during an earlier
+        /// session.  The state will be null the first time a page is visited.</param>
+        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
+        {
+            // TODO: Assign a collection of bindable groups to this.DefaultViewModel["Groups"]
+        }
+
+        #region NavigationHelper registration
+
+        /// The methods provided in this section are simply used to allow
+        /// NavigationHelper to respond to the page's navigation methods.
+        /// 
+        /// Page specific logic should be placed in event handlers for the  
+        /// <see cref="Common.NavigationHelper.LoadState"/>
+        /// and <see cref="Common.NavigationHelper.SaveState"/>.
+        /// The navigation parameter is available in the LoadState method 
+        /// in addition to page state preserved during an earlier session.
+
+        protected override void OnNavigatedTo(NavigationEventArgs e)
+        {
+            navigationHelper.OnNavigatedTo(e);
+            if (e.Parameter is StorageFile)
+            {
+                var file = e.Parameter as StorageFile;
+                var key = new CompositeKey();
+                key.AddUserKey(new KcpPassword("test"));
+                try
+                {
+                    _database.Open(IOConnectionInfo.FromPath(file.Path), key, new NullStatusLogger());
+
+                    DefaultViewModel["Groups"] = _database.RootGroup.GetGroups(false).Select(g => g.Name);
+                }
+                finally
+                {
+                    _database.Close();
+                }
+            }
+        }
+
+        protected override void OnNavigatedFrom(NavigationEventArgs e)
+        {
+            navigationHelper.OnNavigatedFrom(e);
+        }
+
+        #endregion
+    }
+}