Start adding server support

Application/Options/AboutOptionsPanel.xaml.cs

@@ -4,7 +4,7 @@ namespace FeedCenter.Options;
 
 public partial class AboutOptionsPanel
 {
-    public AboutOptionsPanel(Window parentWindow) : base(parentWindow)
+    public AboutOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
     {
         InitializeComponent();
     }

Application/Options/AccountTypeItem.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+
+namespace FeedCenter.Options
+{
+    public class AccountTypeItem
+    {
+        public AccountType AccountType { get; set; }
+        public string Name { get; set; }
+
+        public static List<AccountTypeItem> AccountTypes =>
+        [
+            new()
+            {
+                Name = Properties.Resources.AccountTypeFever,
+                AccountType = AccountType.Fever
+            },
+            //new()
+            //{
+            //    Name = Properties.Resources.AccountTypeGoogleReader,
+            //    AccountType = AccountType.GoogleReader
+            //}
+        ];
+    }
+}

Application/Options/AccountTypeToNameConverter.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Windows.Data;
+
+namespace FeedCenter.Options;
+
+public class AccountTypeToNameConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        if (value is AccountType accountType)
+            return AccountTypeItem.AccountTypes.First(at => at.AccountType == accountType).Name;
+
+        return value;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}

Application/Options/AccountWindow.xaml

@@ -0,0 +1,139 @@
+<Window x:Class="FeedCenter.Options.AccountWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:properties="clr-namespace:FeedCenter.Properties"
+        xmlns:feedCenter="clr-namespace:FeedCenter"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        d:DataContext="{d:DesignInstance Type=feedCenter:Account}"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
+        xmlns:options="clr-namespace:FeedCenter.Options"
+        mc:Ignorable="d"
+        Title="AccountWindow"
+        Height="350"
+        Width="450"
+        WindowStartupLocation="CenterOwner"
+        Icon="/FeedCenter;component/Resources/Application.ico"
+        FocusManager.FocusedElement="{Binding ElementName=NameTextBox}">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
+    <Grid Margin="6">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <TabControl Name="OptionsTabControl"
+                    Grid.Row="0"
+                    Grid.Column="0"
+                    mah:HeaderedControlHelper.HeaderFontSize="16"
+                    mah:TabControlHelper.Underlined="SelectedTabItem">
+            <TabItem Header="{x:Static properties:Resources.generalTab}">
+                <StackPanel Margin="0,4"
+                            options:Spacing.Vertical="8">
+                    <ComboBox Name="AccountTypeComboBox"
+                              mah:TextBoxHelper.UseFloatingWatermark="True"
+                              mah:TextBoxHelper.Watermark="{x:Static properties:Resources.accountTypeLabel}"
+                              DisplayMemberPath="Name"
+                              ItemsSource="{Binding Source={x:Static options:AccountTypeItem.AccountTypes}}"
+                              SelectedValuePath="AccountType"
+                              SelectedValue="{Binding Path=Type, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=true}" />
+                    <TextBox Name="NameTextBox"
+                             mah:TextBoxHelper.UseFloatingWatermark="True"
+                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.accountNameLabel}"
+                             mah:TextBoxHelper.SelectAllOnFocus="True"
+                             Text="{Binding Path=Name, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
+                    <TextBox Name="UrlTextBox"
+                             mah:TextBoxHelper.UseFloatingWatermark="True"
+                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.accountUrlLabel}"
+                             mah:TextBoxHelper.SelectAllOnFocus="True"
+                             Text="{Binding Path=Url, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
+                    <CheckBox Name="ReadIntervalCheckBox"
+                              VerticalContentAlignment="Center"
+                              IsChecked="{Binding Path=Enabled, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}">
+                        <StackPanel Orientation="Horizontal">
+                            <Label Content="{x:Static properties:Resources.accountReadIntervalPrefix}"
+                                   HorizontalAlignment="Left"
+                                   Margin="0,0,5,0"
+                                   VerticalAlignment="Center"
+                                   Padding="0" />
+                            <mah:NumericUpDown Width="100"
+                                               Maximum="10080"
+                                               Minimum="1"
+                                               IsEnabled="{Binding ElementName=ReadIntervalCheckBox, Path=IsChecked}"
+                                               Value="{Binding CheckInterval, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
+                            <Label Content="{x:Static properties:Resources.accountReadIntervalSuffix}"
+                                   HorizontalAlignment="Left"
+                                   Margin="5,0,0,0"
+                                   VerticalAlignment="Center"
+                                   Padding="0" />
+                        </StackPanel>
+                    </CheckBox>
+                </StackPanel>
+            </TabItem>
+            <TabItem Header="{x:Static properties:Resources.authenticationTab}">
+                <StackPanel Margin="0,4">
+                    <CheckBox Content="{x:Static properties:Resources.accountRequiresAuthenticationCheckBox}"
+                              Margin="0,0,0,4"
+                              Name="RequiresAuthenticationCheckBox"
+                              IsChecked="{Binding Path=Authenticate, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
+                    <TextBox Name="AuthenticationUserNameTextBox"
+                             Margin="25,0,0,4"
+                             IsEnabled="{Binding ElementName=RequiresAuthenticationCheckBox, Path=IsChecked}"
+                             mah:TextBoxHelper.UseFloatingWatermark="True"
+                             mah:TextBoxHelper.Watermark="{x:Static properties:Resources.authenticationUserNameLabel}"
+                             Text="{Binding Path=Username, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />
+                    <PasswordBox Name="AuthenticationPasswordTextBox"
+                                 Margin="25,0,0,8"
+                                 Style="{StaticResource MahApps.Styles.PasswordBox.Button.Revealed}"
+                                 mah:PasswordBoxBindingBehavior.Password="{Binding Password, UpdateSourceTrigger=Explicit, ValidatesOnDataErrors=True}"
+                                 mah:TextBoxHelper.UseFloatingWatermark="True"
+                                 mah:TextBoxHelper.Watermark="{x:Static properties:Resources.authenticationPasswordLabel}"
+                                 IsEnabled="{Binding ElementName=RequiresAuthenticationCheckBox, Path=IsChecked}" />
+                </StackPanel>
+            </TabItem>
+        </TabControl>
+        <Grid Name="AccountReadProgress"
+              Grid.Row="1"
+              Height="20"
+              Visibility="Collapsed">
+            <ProgressBar Name="AccountReadProgressBar" />
+            <TextBlock Text="Loading account..."
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
+        </Grid>
+        <StackPanel
+            Name="ButtonPanel"
+            Grid.Column="0"
+            Grid.Row="1"
+            Orientation="Horizontal"
+            Visibility="Visible"
+            Margin="0,5,0,0"
+            HorizontalAlignment="Right">
+            <Button Content="{x:Static properties:Resources.OkayButton}"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Bottom"
+                    Width="75"
+                    Margin="0,0,5,0"
+                    IsDefault="True"
+                    Click="HandleOkayButtonClick" />
+            <Button Content="{x:Static properties:Resources.CancelButton}"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Bottom"
+                    Width="75"
+                    IsCancel="True" />
+        </StackPanel>
+    </Grid>
+</Window>

Application/Options/AccountWindow.xaml.cs

@@ -0,0 +1,78 @@
+using ChrisKaczor.Wpf.Validation;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Threading;
+
+namespace FeedCenter.Options;
+
+public partial class AccountWindow
+{
+    private Account _account;
+    private bool _isNew;
+    private readonly FeedCenterEntities _entities;
+
+    public AccountWindow(FeedCenterEntities entities)
+    {
+        _entities = entities;
+
+        InitializeComponent();
+    }
+
+    public bool? Display(Account account, Window owner, bool isNew)
+    {
+        _account = account;
+        _isNew = isNew;
+
+        DataContext = account;
+
+        Title = isNew ? Properties.Resources.AccountWindowAdd : Properties.Resources.AccountWindowEdit;
+
+        Owner = owner;
+
+        return ShowDialog();
+    }
+
+    private void HandleOkayButtonClick(object sender, RoutedEventArgs e)
+    {
+        var transaction = _entities.BeginTransaction();
+
+        if (!this.IsValid(OptionsTabControl))
+        {
+            transaction.Rollback();
+            return;
+        }
+
+        if (_isNew)
+        {
+            _entities.Accounts.Add(_account);
+        }
+
+        transaction.Commit();
+
+        var accountId = _account.Id;
+
+        AccountReadProgressBar.Value = 0;
+        AccountReadProgressBar.Maximum = _account.GetProgressSteps(_entities) + 1;
+
+        AccountReadProgress.Visibility = Visibility.Visible;
+        ButtonPanel.Visibility = Visibility.Collapsed;
+
+        var dispatcher = Dispatcher.CurrentDispatcher;
+
+        Task.Run(() =>
+        {
+            var entities = new FeedCenterEntities();
+            var account = entities.Accounts.First(a => a.Id == accountId);
+            var accountReadInput = new AccountReadInput(entities, null, true, () => dispatcher.Invoke(() => AccountReadProgressBar.Value++));
+            account.Read(accountReadInput);
+
+            dispatcher.Invoke(() =>
+            {
+                DialogResult = true;
+
+                Close();
+            });
+        });
+    }
+}

Application/Options/AccountsOptionsPanel.xaml

@@ -0,0 +1,98 @@
+<options:OptionsPanelBase x:Class="FeedCenter.Options.AccountsOptionsPanel"
+                          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                          xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+                          xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+                          xmlns:options="clr-namespace:FeedCenter.Options"
+                          xmlns:properties="clr-namespace:FeedCenter.Properties"
+                          xmlns:controls="clr-namespace:ChrisKaczor.Wpf.Controls;assembly=ChrisKaczor.Wpf.Controls.Link"
+                          xmlns:feedCenter="clr-namespace:FeedCenter"
+                          mc:Ignorable="d"
+                          d:DesignHeight="311"
+                          d:DesignWidth="425">
+    <options:OptionsPanelBase.Resources>
+        <ResourceDictionary>
+            <options:AccountTypeToNameConverter x:Key="AccountTypeToNameConverter" />
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </options:OptionsPanelBase.Resources>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <DataGrid Name="AccountDataGrid"
+                  SelectionChanged="HandleAccountDataGridSelectionChanged"
+                  Grid.Row="0"
+                  SelectionMode="Single"
+                  SelectionUnit="FullRow"
+                  Grid.Column="0"
+                  AutoGenerateColumns="False"
+                  GridLinesVisibility="None"
+                  CanUserResizeRows="False"
+                  IsReadOnly="True"
+                  HeadersVisibility="Column"
+                  BorderThickness="1,1,1,1"
+                  BorderBrush="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}"
+                  AllowDrop="True"
+                  Background="{x:Null}"
+                  d:DataContext="{d:DesignInstance feedCenter:Account }">
+            <DataGrid.Columns>
+                <DataGridTextColumn Binding="{Binding Name}"
+                                    Header="{x:Static properties:Resources.AccountNameColumnHeader}"
+                                    SortDirection="Ascending"
+                                    Width="*" />
+                <DataGridTextColumn Binding="{Binding Type, Converter={StaticResource AccountTypeToNameConverter}}"
+                                    Header="{x:Static properties:Resources.AccountTypeColumnHeader}"
+                                    Width="*" />
+            </DataGrid.Columns>
+            <DataGrid.RowStyle>
+                <Style TargetType="DataGridRow"
+                       BasedOn="{StaticResource MahApps.Styles.DataGridRow}">
+                    <EventSetter Event="MouseDoubleClick"
+                                 Handler="HandleAccountDataGridRowMouseDoubleClick" />
+                </Style>
+            </DataGrid.RowStyle>
+        </DataGrid>
+        <Border Grid.Column="0"
+                Grid.Row="1"
+                BorderThickness="1,0,1,1"
+                BorderBrush="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}" />
+        <Border Grid.Row="1"
+                Grid.Column="0"
+                BorderThickness="1,0,1,1"
+                BorderBrush="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}">
+            <StackPanel Orientation="Horizontal"
+                        Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}">
+                <controls:Link Name="AddAccountButton"
+                               Margin="2"
+                               Click="HandleAddAccountButtonClick"
+                               Text="{x:Static properties:Resources.AddLink}"
+                               ToolTip="{x:Static properties:Resources.AddAccountButton}">
+                </controls:Link>
+                <controls:Link Name="EditAccountButton"
+                               Margin="2"
+                               Click="HandleEditAccountButtonClick"
+                               Text="{x:Static properties:Resources.EditLink}"
+                               ToolTip="{x:Static properties:Resources.EditAccountButton}">
+                </controls:Link>
+                <controls:Link Name="DeleteAccountButton"
+                               Margin="2"
+                               Click="HandleDeleteAccountButtonClick"
+                               Text="{x:Static properties:Resources.DeleteLink}"
+                               ToolTip="{x:Static properties:Resources.DeleteAccountButton}">
+                </controls:Link>
+            </StackPanel>
+        </Border>
+    </Grid>
+</options:OptionsPanelBase>

Application/Options/AccountsOptionsPanel.xaml.cs

@@ -0,0 +1,129 @@
+using System.ComponentModel;
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Input;
+
+namespace FeedCenter.Options;
+
+public partial class AccountsOptionsPanel
+{
+    private readonly FeedCenterEntities _entities;
+
+    public AccountsOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
+    {
+        _entities = entities;
+
+        InitializeComponent();
+    }
+
+    public override string CategoryName => Properties.Resources.optionCategoryAccounts;
+
+    public override void LoadPanel()
+    {
+        base.LoadPanel();
+
+        var collectionViewSource = new CollectionViewSource { Source = _entities.Accounts };
+        collectionViewSource.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));
+        collectionViewSource.IsLiveSortingRequested = true;
+        collectionViewSource.View.Filter = item =>
+        {
+            if (item is not Account account)
+                return false;
+
+            // Filter out local accounts
+            return account.Type != AccountType.Local;
+        };
+
+        AccountDataGrid.ItemsSource = collectionViewSource.View;
+        AccountDataGrid.SelectedIndex = 0;
+
+        SetAccountButtonStates();
+    }
+
+    private void SetAccountButtonStates()
+    {
+        AddAccountButton.IsEnabled = true;
+
+        EditAccountButton.IsEnabled = AccountDataGrid.SelectedItem != null;
+        DeleteAccountButton.IsEnabled = AccountDataGrid.SelectedItem != null;
+    }
+
+    private void AddAccount()
+    {
+        var account = new Account(AccountType.Fever);
+
+        var accountWindow = new AccountWindow(_entities);
+
+        var result = accountWindow.Display(account, Window.GetWindow(this), true);
+
+        if (!result.HasValue || !result.Value)
+            return;
+
+        AccountDataGrid.SelectedItem = account;
+
+        SetAccountButtonStates();
+    }
+
+    private void EditSelectedAccount()
+    {
+        if (AccountDataGrid.SelectedItem == null)
+            return;
+
+        var account = (Account) AccountDataGrid.SelectedItem;
+
+        var accountWindow = new AccountWindow(_entities);
+
+        accountWindow.Display(account, Window.GetWindow(this), false);
+    }
+
+    private void DeleteSelectedAccount()
+    {
+        var account = (Account) AccountDataGrid.SelectedItem;
+
+        if (MessageBox.Show(ParentWindow, string.Format(Properties.Resources.ConfirmDeleteAccount, account.Name),
+                Properties.Resources.ConfirmDeleteTitle, MessageBoxButton.YesNo, MessageBoxImage.Question,
+                MessageBoxResult.No) == MessageBoxResult.No)
+            return;
+
+        var index = AccountDataGrid.SelectedIndex;
+
+        if (index == AccountDataGrid.Items.Count - 1)
+            AccountDataGrid.SelectedIndex = index - 1;
+        else
+            AccountDataGrid.SelectedIndex = index + 1;
+
+        _entities.SaveChanges(() => _entities.Accounts.Remove(account));
+
+        SetAccountButtonStates();
+    }
+
+    private void HandleAddAccountButtonClick(object sender, RoutedEventArgs e)
+    {
+        AddAccount();
+    }
+
+    private void HandleEditAccountButtonClick(object sender, RoutedEventArgs e)
+    {
+        EditSelectedAccount();
+    }
+
+    private void HandleDeleteAccountButtonClick(object sender, RoutedEventArgs e)
+    {
+        DeleteSelectedAccount();
+    }
+
+    private void HandleAccountDataGridSelectionChanged(object sender, SelectionChangedEventArgs e)
+    {
+        SetAccountButtonStates();
+    }
+
+    private void HandleAccountDataGridRowMouseDoubleClick(object sender, MouseButtonEventArgs e)
+    {
+        if (!EditAccountButton.IsEnabled)
+            return;
+
+        EditSelectedAccount();
+    }
+}

Application/Options/BulkFeedWindow.xaml.cs

@@ -1,5 +1,4 @@
-using FeedCenter.Data;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
 using System.Windows;
@@ -12,9 +11,12 @@ public partial class BulkFeedWindow
 {
     private List<CheckedListItem<Feed>> _checkedListBoxItems;
     private CollectionViewSource _collectionViewSource;
+    private readonly FeedCenterEntities _entities;
 
-    public BulkFeedWindow()
+    public BulkFeedWindow(FeedCenterEntities entities)
     {
+        _entities = entities;
+
         InitializeComponent();
     }
 
@@ -22,7 +24,7 @@ public partial class BulkFeedWindow
     {
         _checkedListBoxItems = new List<CheckedListItem<Feed>>();
 
-        foreach (var feed in Database.Entities.Feeds)
+        foreach (var feed in _entities.Feeds)
             _checkedListBoxItems.Add(new CheckedListItem<Feed> { Item = feed });
 
         _collectionViewSource = new CollectionViewSource { Source = _checkedListBoxItems };
@@ -52,7 +54,7 @@ public partial class BulkFeedWindow
 
     private void HandleOkButtonClick(object sender, RoutedEventArgs e)
     {
-        Database.Entities.SaveChanges(() =>
+        _entities.SaveChanges(() =>
         {
             foreach (var item in _checkedListBoxItems.Where(i => i.IsChecked))
             {

Application/Options/CategoryWindow.xaml

@@ -24,14 +24,17 @@
             <ResourceDictionary.MergedDictionaries>
                 <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                 <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
-                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
-                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary
+                    Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>
     </Window.Resources>
     <StackPanel Margin="6"
                 options:Spacing.Vertical="5">
-        <TextBox mah:TextBoxHelper.UseFloatingWatermark="True"
+        <TextBox Name="NameTextBox"
+                 mah:TextBoxHelper.UseFloatingWatermark="True"
                  mah:TextBoxHelper.Watermark="{x:Static properties:Resources.categoryNameLabel}"
                  mah:TextBoxHelper.SelectAllOnFocus="True"
                  Text="{Binding Path=Name, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}" />

Application/Options/CategoryWindow.xaml.cs

@@ -1,13 +1,16 @@
-using System.Windows;
-using ChrisKaczor.Wpf.Validation;
-using FeedCenter.Data;
+using ChrisKaczor.Wpf.Validation;
+using System.Windows;
 
 namespace FeedCenter.Options;
 
 public partial class CategoryWindow
 {
-    public CategoryWindow()
+    private readonly FeedCenterEntities _entities;
+
+    public CategoryWindow(FeedCenterEntities entities)
     {
+        _entities = entities;
+
         InitializeComponent();
     }
 
@@ -30,7 +33,7 @@ public partial class CategoryWindow
 
     private void HandleOkayButtonClick(object sender, RoutedEventArgs e)
     {
-        var transaction = Database.Entities.BeginTransaction();
+        var transaction = _entities.BeginTransaction();
 
         if (!this.IsValid())
         {
@@ -39,7 +42,6 @@ public partial class CategoryWindow
         }
 
         transaction.Commit();
-        Database.Entities.Refresh();
 
         // Dialog is good
         DialogResult = true;

Application/Options/DisplayOptionsPanel.xaml.cs

@@ -5,7 +5,7 @@ namespace FeedCenter.Options;
 
 public partial class DisplayOptionsPanel
 {
-    public DisplayOptionsPanel(Window parentWindow) : base(parentWindow)
+    public DisplayOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
     {
         InitializeComponent();
     }

Application/Options/FeedWindow.xaml.cs

@@ -1,19 +1,22 @@
 using ChrisKaczor.Wpf.Validation;
-using FeedCenter.Data;
 using System.Windows;
 
 namespace FeedCenter.Options;
 
 public partial class FeedWindow
 {
-    public FeedWindow()
+    private readonly FeedCenterEntities _entities;
+
+    public FeedWindow(FeedCenterEntities entities)
     {
+        _entities = entities;
+
         InitializeComponent();
     }
 
     public bool? Display(Feed feed, Window owner)
     {
-        CategoryComboBox.ItemsSource = Database.Entities.Categories;
+        CategoryComboBox.ItemsSource = _entities.Categories;
 
         DataContext = feed;
 
@@ -26,7 +29,7 @@ public partial class FeedWindow
 
     private void HandleOkayButtonClick(object sender, RoutedEventArgs e)
     {
-        var transaction = Database.Entities.BeginTransaction();
+        var transaction = _entities.BeginTransaction();
 
         if (!this.IsValid(OptionsTabControl))
         {
@@ -35,7 +38,6 @@ public partial class FeedWindow
         }
 
         transaction.Commit();
-        Database.Entities.Refresh();
 
         DialogResult = true;
 

Application/Options/FeedsOptionsPanel.xaml.cs

@@ -1,5 +1,4 @@
-using FeedCenter.Data;
-using Microsoft.Win32;
+using Microsoft.Win32;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
@@ -14,9 +13,12 @@ namespace FeedCenter.Options;
 public partial class FeedsOptionsPanel
 {
     private CollectionViewSource _collectionViewSource;
+    private readonly FeedCenterEntities _entities;
 
-    public FeedsOptionsPanel(Window parentWindow) : base(parentWindow)
+    public FeedsOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
     {
+        _entities = entities;
+
         InitializeComponent();
     }
 
@@ -26,7 +28,7 @@ public partial class FeedsOptionsPanel
     {
         base.LoadPanel();
 
-        var collectionViewSource = new CollectionViewSource { Source = Database.Entities.Categories };
+        var collectionViewSource = new CollectionViewSource { Source = _entities.Categories };
         collectionViewSource.SortDescriptions.Add(new SortDescription("SortKey", ListSortDirection.Ascending));
         collectionViewSource.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));
         collectionViewSource.IsLiveSortingRequested = true;
@@ -44,20 +46,20 @@ public partial class FeedsOptionsPanel
 
     private void AddFeed()
     {
-        var feed = Feed.Create();
+        var feed = Feed.Create(_entities);
 
         var category = (Category) CategoryDataGrid.SelectedItem;
 
         feed.CategoryId = category.Id;
 
-        var feedWindow = new FeedWindow();
+        var feedWindow = new FeedWindow(_entities);
 
         var result = feedWindow.Display(feed, Window.GetWindow(this));
 
         if (!result.HasValue || !result.Value)
             return;
 
-        Database.Entities.SaveChanges(() => Database.Entities.Feeds.Add(feed));
+        _entities.SaveChanges(() => _entities.Feeds.Add(feed));
 
         FeedDataGrid.SelectedItem = feed;
 
@@ -71,7 +73,7 @@ public partial class FeedsOptionsPanel
 
         var feed = (Feed) FeedDataGrid.SelectedItem;
 
-        var feedWindow = new FeedWindow();
+        var feedWindow = new FeedWindow(_entities);
 
         feedWindow.Display(feed, Window.GetWindow(this));
     }
@@ -86,7 +88,7 @@ public partial class FeedsOptionsPanel
         FeedDataGrid.SelectedItems.CopyTo(selectedItems, 0);
 
         foreach (var feed in selectedItems)
-            Database.Entities.SaveChanges(() => Database.Entities.Feeds.Remove(feed));
+            _entities.SaveChanges(() => _entities.Feeds.Remove(feed));
 
         SetFeedButtonStates();
     }
@@ -116,7 +118,7 @@ public partial class FeedsOptionsPanel
         ExportFeeds();
     }
 
-    private static void ExportFeeds()
+    private void ExportFeeds()
     {
         var saveFileDialog = new SaveFileDialog
         {
@@ -143,7 +145,7 @@ public partial class FeedsOptionsPanel
         xmlWriter.WriteStartElement("opml");
         xmlWriter.WriteStartElement("body");
 
-        foreach (var feed in Database.Entities.Feeds.OrderBy(feed => feed.Name))
+        foreach (var feed in _entities.Feeds.OrderBy(feed => feed.Name))
         {
             xmlWriter.WriteStartElement("outline");
 
@@ -162,7 +164,7 @@ public partial class FeedsOptionsPanel
         xmlWriter.Close();
     }
 
-    private static void ImportFeeds()
+    private void ImportFeeds()
     {
         var openFileDialog = new OpenFileDialog
         {
@@ -188,8 +190,7 @@ public partial class FeedsOptionsPanel
 
             while (xmlReader.NodeType != XmlNodeType.EndElement)
             {
-                var feed = Feed.Create();
-                feed.CategoryId = Database.Entities.Categories.First(c => c.IsDefault).Id;
+                var feed = Feed.Create(_entities);
 
                 while (xmlReader.MoveToNextAttribute())
                 {
@@ -218,7 +219,7 @@ public partial class FeedsOptionsPanel
                 if (string.IsNullOrEmpty(feed.Name))
                     feed.Name = feed.Title;
 
-                Database.Entities.Feeds.Add(feed);
+                _entities.SaveChanges(() => _entities.Feeds.Add(feed));
 
                 xmlReader.MoveToElement();
 
@@ -242,23 +243,23 @@ public partial class FeedsOptionsPanel
         var selectedId = ((Category) CategoryDataGrid.SelectedItem).Id;
 
         EditCategoryButton.IsEnabled = CategoryDataGrid.SelectedItem != null &&
-                                       selectedId != Database.Entities.DefaultCategory.Id;
+                                       selectedId != _entities.DefaultCategory.Id;
         DeleteCategoryButton.IsEnabled = CategoryDataGrid.SelectedItem != null &&
-                                         selectedId != Database.Entities.DefaultCategory.Id;
+                                         selectedId != _entities.DefaultCategory.Id;
     }
 
     private void AddCategory()
     {
         var category = new Category();
 
-        var categoryWindow = new CategoryWindow();
+        var categoryWindow = new CategoryWindow(_entities);
 
         var result = categoryWindow.Display(category, Window.GetWindow(this));
 
         if (!result.HasValue || !result.Value)
             return;
 
-        Database.Entities.SaveChanges(() => Database.Entities.Categories.Add(category));
+        _entities.SaveChanges(() => _entities.Categories.Add(category));
 
         CategoryDataGrid.SelectedItem = category;
 
@@ -272,7 +273,7 @@ public partial class FeedsOptionsPanel
 
         var category = (Category) CategoryDataGrid.SelectedItem;
 
-        var categoryWindow = new CategoryWindow();
+        var categoryWindow = new CategoryWindow(_entities);
 
         categoryWindow.Display(category, Window.GetWindow(this));
     }
@@ -284,10 +285,10 @@ public partial class FeedsOptionsPanel
         if (MessageBox.Show(ParentWindow, string.Format(Properties.Resources.ConfirmDeleteCategory, category.Name), Properties.Resources.ConfirmDeleteTitle, MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) == MessageBoxResult.No)
             return;
 
-        var defaultCategory = Database.Entities.DefaultCategory;
+        var defaultCategory = _entities.DefaultCategory;
 
-        foreach (var feed in Database.Entities.Feeds.Where(f => f.CategoryId == category.Id))
-            Database.Entities.SaveChanges(() => feed.CategoryId = defaultCategory.Id);
+        foreach (var feed in _entities.Feeds.Where(f => f.CategoryId == category.Id))
+            _entities.SaveChanges(() => feed.CategoryId = defaultCategory.Id);
 
         var index = CategoryDataGrid.SelectedIndex;
 
@@ -296,7 +297,7 @@ public partial class FeedsOptionsPanel
         else
             CategoryDataGrid.SelectedIndex = index + 1;
 
-        Database.Entities.SaveChanges(() => Database.Entities.Categories.Remove(category));
+        _entities.SaveChanges(() => _entities.Categories.Remove(category));
 
         SetCategoryButtonStates();
     }
@@ -320,7 +321,7 @@ public partial class FeedsOptionsPanel
     {
         if (_collectionViewSource == null)
         {
-            _collectionViewSource = new CollectionViewSource { Source = Database.Entities.Feeds };
+            _collectionViewSource = new CollectionViewSource { Source = _entities.Feeds };
             _collectionViewSource.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));
             _collectionViewSource.Filter += HandleCollectionViewSourceFilter;
 
@@ -342,7 +343,7 @@ public partial class FeedsOptionsPanel
 
         var feed = (Feed) e.Item;
 
-        e.Accepted = feed.CategoryId == selectedCategory.Id;
+        e.Accepted = feed.CategoryId == selectedCategory.Id && feed.Account.Type == AccountType.Local;
     }
 
     private void HandleCategoryDataGridRowDrop(object sender, DragEventArgs e)
@@ -352,7 +353,7 @@ public partial class FeedsOptionsPanel
         var category = (Category) ((DataGridRow) sender).Item;
 
         foreach (var feed in feedList!)
-            Database.Entities.SaveChanges(() => feed.CategoryId = category.Id);
+            _entities.SaveChanges(() => feed.CategoryId = category.Id);
 
         _collectionViewSource.View.Refresh();
 
@@ -382,7 +383,7 @@ public partial class FeedsOptionsPanel
 
     private void HandleMultipleEditClick(object sender, RoutedEventArgs e)
     {
-        var bulkFeedWindow = new BulkFeedWindow();
+        var bulkFeedWindow = new BulkFeedWindow(_entities);
         bulkFeedWindow.Display(Window.GetWindow(this));
     }
 

Application/Options/GeneralOptionsPanel.xaml.cs

@@ -6,7 +6,7 @@ namespace FeedCenter.Options;
 
 public partial class GeneralOptionsPanel
 {
-    public GeneralOptionsPanel(Window parentWindow) : base(parentWindow)
+    public GeneralOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
     {
         InitializeComponent();
     }

Application/Options/OptionsPanelBase.cs

@@ -6,10 +6,12 @@ namespace FeedCenter.Options;
 public class OptionsPanelBase : UserControl
 {
     protected readonly Window ParentWindow;
+    protected readonly FeedCenterEntities Entities;
 
-    protected OptionsPanelBase(Window parentWindow)
+    protected OptionsPanelBase(Window parentWindow, FeedCenterEntities entities)
     {
         ParentWindow = parentWindow;
+        Entities = entities;
     }
 
     public virtual string CategoryName => null;

Application/Options/OptionsWindow.xaml.cs

@@ -6,6 +6,7 @@ namespace FeedCenter.Options;
 public partial class OptionsWindow
 {
     private readonly List<OptionsPanelBase> _optionPanels = new();
+    private readonly FeedCenterEntities _entities = new();
 
     public OptionsWindow()
     {
@@ -20,11 +21,12 @@ public partial class OptionsWindow
 
     private void AddCategories()
     {
-        _optionPanels.Add(new GeneralOptionsPanel(this));
-        _optionPanels.Add(new DisplayOptionsPanel(this));
-        _optionPanels.Add(new FeedsOptionsPanel(this));
-        _optionPanels.Add(new UpdateOptionsPanel(this));
-        _optionPanels.Add(new AboutOptionsPanel(this));
+        _optionPanels.Add(new GeneralOptionsPanel(this, _entities));
+        _optionPanels.Add(new DisplayOptionsPanel(this, _entities));
+        _optionPanels.Add(new FeedsOptionsPanel(this, _entities));
+        _optionPanels.Add(new AccountsOptionsPanel(this, _entities));
+        _optionPanels.Add(new UpdateOptionsPanel(this, _entities));
+        _optionPanels.Add(new AboutOptionsPanel(this, _entities));
     }
 
     private void LoadCategories()

Application/Options/UpdateOptionsPanel.xaml.cs

@@ -6,7 +6,7 @@ namespace FeedCenter.Options;
 
 public partial class UpdateOptionsPanel
 {
-    public UpdateOptionsPanel(Window parentWindow) : base(parentWindow)
+    public UpdateOptionsPanel(Window parentWindow, FeedCenterEntities entities) : base(parentWindow, entities)
     {
         InitializeComponent();
     }