elfisa-pharmacy/src/Elfisa.Avalonia/Views/PriceListView.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:vm="using:Elfisa.Avalonia.ViewModels"
             xmlns:conv="using:Avalonia.Data.Converters"
             x:Class="Elfisa.Avalonia.Views.PriceListView"
             x:DataType="vm:PriceListViewModel">

    <DockPanel Margin="24">
        <Grid DockPanel.Dock="Top" Margin="0,0,0,14" ColumnDefinitions="*,Auto">
            <StackPanel Grid.Column="0" Spacing="2" VerticalAlignment="Center">
                <TextBlock Text="Прайс-лист" Classes="h1"/>
                <TextBlock Text="Каталог позиций — собери заказ и сохрани" Classes="muted"/>
            </StackPanel>
            <!-- Мои прайсы: видно, по какому прайсу заказываем; если подключено несколько — можно выбрать -->
            <Border Grid.Column="1" VerticalAlignment="Center" Padding="12,8" CornerRadius="10"
                    Background="{DynamicResource Panel}" BorderThickness="1" BorderBrush="{DynamicResource Border}">
                <StackPanel Orientation="Horizontal" Spacing="10" VerticalAlignment="Center">
                    <TextBlock Text="Мои прайсы" Classes="label" VerticalAlignment="Center"/>
                    <ComboBox ItemsSource="{Binding MyPriceLists}" SelectedItem="{Binding SelectedPriceList}"
                              MinWidth="240" VerticalAlignment="Center"/>
                </StackPanel>
            </Border>
        </Grid>

        <Border DockPanel.Dock="Top" Margin="0,0,0,10" Padding="10,7" CornerRadius="6"
                Background="{DynamicResource AccentSoft}"
                IsVisible="{Binding Status, Converter={x:Static conv:ObjectConverters.IsNotNull}}">
            <TextBlock Text="{Binding Status}" Foreground="{DynamicResource AccentPressed}" TextWrapping="Wrap" FontSize="12.5"/>
        </Border>

        <Grid ColumnDefinitions="*,16,430">

            <!-- Каталог -->
            <Border Grid.Column="0" Classes="card" Padding="0" ClipToBounds="True">
                <DockPanel>
                    <StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Spacing="10" Margin="14">
                        <TextBox Text="{Binding Search}" Width="330" Watermark="поиск по наименованию (от 2 символов)…">
                            <TextBox.KeyBindings>
                                <KeyBinding Gesture="Enter" Command="{Binding SearchCommand}"/>
                            </TextBox.KeyBindings>
                        </TextBox>
                        <Button Classes="primary" Content="Найти" Command="{Binding SearchCommand}" IsEnabled="{Binding !Busy}"/>
                    </StackPanel>
                    <Border DockPanel.Dock="Bottom" Margin="14" Padding="0">
                        <StackPanel Orientation="Horizontal" Spacing="10" VerticalAlignment="Center">
                            <TextBlock Text="Кол-во" Classes="label" VerticalAlignment="Center"/>
                            <NumericUpDown Value="{Binding SelectedOffer.OrderQty}" Minimum="0" Maximum="100000" Increment="1" FormatString="0" Width="120"
                                           IsEnabled="{Binding SelectedOffer, Converter={x:Static conv:ObjectConverters.IsNotNull}}"/>
                            <Button Classes="primary" Content="Добавить в заказ ▸" Command="{Binding AddToOrderCommand}"/>
                            <TextBlock Text="или выдели строку и набери число на клавиатуре, Enter — добавить" Classes="muted" VerticalAlignment="Center" TextWrapping="Wrap" MaxWidth="240"/>
                        </StackPanel>
                    </Border>
                    <!-- Дрилдаун как в старой программе: Название → МГ → Предложения -->
                    <Grid ColumnDefinitions="1.3*,10,120,10,2.2*" Margin="14,0,14,0">

                        <!-- Название (базовое наименование) -->
                        <DockPanel Grid.Column="0">
                            <TextBlock DockPanel.Dock="Top" Text="Название" Classes="label" Margin="2,0,0,5"/>
                            <ListBox ItemsSource="{Binding BaseNames}" SelectedItem="{Binding SelectedBaseName}"
                                     BorderThickness="1" BorderBrush="{DynamicResource Border}" CornerRadius="8"/>
                        </DockPanel>

                        <!-- МГ (дозировка) -->
                        <DockPanel Grid.Column="2">
                            <TextBlock DockPanel.Dock="Top" Text="МГ" Classes="label" Margin="2,0,0,5"/>
                            <ListBox ItemsSource="{Binding MgOptions}" SelectedItem="{Binding SelectedMg}"
                                     BorderThickness="1" BorderBrush="{DynamicResource Border}" CornerRadius="8"/>
                        </DockPanel>

                        <!-- Предложения (фильтр: название + МГ) -->
                        <DockPanel Grid.Column="4">
                            <TextBlock DockPanel.Dock="Top" Text="Предложения" Classes="label" Margin="2,0,0,5"/>
                            <DataGrid x:Name="OffersGrid" ItemsSource="{Binding Offers}" SelectedItem="{Binding SelectedOffer}" x:CompileBindings="False"
                                      AutoGenerateColumns="False" IsReadOnly="True" HeadersVisibility="Column"
                                      CanUserResizeColumns="True" CanUserSortColumns="False"
                                      BorderThickness="1" BorderBrush="{DynamicResource Border}" CornerRadius="8">
                                <DataGrid.Columns>
                                    <DataGridTextColumn Header="Наименование" Width="*" Binding="{Binding DrugName}"/>
                                    <DataGridTextColumn Header="Поставщик" Width="140" Binding="{Binding SupplierName}"/>
                                    <DataGridTextColumn Header="Цена" Width="85" Binding="{Binding Price, StringFormat='{}{0:N2}'}" CellStyleClasses="num"/>
                                    <DataGridTextColumn Header="Остаток" Width="75" Binding="{Binding Quantity, StringFormat='{}{0:0}'}" CellStyleClasses="num"/>
                                    <DataGridTextColumn Header="Заказ" Width="70" Binding="{Binding OrderQty, StringFormat='{}{0:0}'}" CellStyleClasses="num"
                                                        FontWeight="Bold" Foreground="{DynamicResource Accent}"/>
                                </DataGrid.Columns>
                            </DataGrid>
                        </DockPanel>
                    </Grid>
                </DockPanel>
            </Border>

            <!-- Мой заказ -->
            <Border Grid.Column="2" Classes="card" Padding="16">
                <DockPanel>
                    <TextBlock DockPanel.Dock="Top" Text="Мой заказ" Classes="h2" Margin="0,0,0,10"/>

                    <StackPanel DockPanel.Dock="Bottom" Spacing="10" Margin="0,12,0,0">
                        <StackPanel Spacing="5">
                            <TextBlock Text="Грузополучатель" Classes="muted"/>
                            <ComboBox ItemsSource="{Binding Locations}" SelectedItem="{Binding SelectedLocation}" HorizontalAlignment="Stretch"/>
                        </StackPanel>
                        <TextBox Text="{Binding Comment}" Watermark="комментарий (необязательно)"/>
                        <Grid ColumnDefinitions="*,Auto">
                            <TextBlock Grid.Column="0" Text="Итого" FontWeight="SemiBold" VerticalAlignment="Center" Foreground="{DynamicResource Text}"/>
                            <TextBlock Grid.Column="1" Text="{Binding CartTotal, StringFormat='{}{0:N2}'}" FontWeight="Bold" FontSize="16" Foreground="{DynamicResource Accent}"/>
                        </Grid>
                        <Button Classes="primary" Content="Сохранить заказ" HorizontalAlignment="Stretch" Command="{Binding SaveDraftCommand}"/>
                        <TextBlock Text="Черновик появится в «Заказы» со статусом «Не отправлен»." Classes="muted" TextWrapping="Wrap"/>
                    </StackPanel>

                    <ScrollViewer>
                        <ItemsControl ItemsSource="{Binding Cart}" x:CompileBindings="False">
                            <ItemsControl.ItemTemplate>
                                <DataTemplate x:DataType="vm:CartItem">
                                    <Border Padding="10" Margin="0,0,0,8" CornerRadius="9"
                                            Background="{DynamicResource RowAlt}" BorderThickness="1" BorderBrush="{DynamicResource Border}">
                                        <DockPanel>
                                            <Button DockPanel.Dock="Right" Content="✕" Width="30" Height="30" Padding="0"
                                                    VerticalAlignment="Top" Background="Transparent" Foreground="{DynamicResource Muted}" Cursor="Hand"
                                                    Command="{Binding $parent[ItemsControl].DataContext.RemoveFromCartCommand}"
                                                    CommandParameter="{Binding}"/>
                                            <StackPanel Spacing="6">
                                                <TextBlock Text="{Binding Name}" Foreground="{DynamicResource Text}" TextWrapping="Wrap" MaxLines="2" TextTrimming="CharacterEllipsis"/>
                                                <TextBlock Text="{Binding Supplier}" Classes="muted"/>
                                                <Grid ColumnDefinitions="Auto,*,Auto" VerticalAlignment="Center">
                                                    <NumericUpDown Grid.Column="0" Value="{Binding Qty}" Minimum="1" Maximum="100000" Increment="1" FormatString="0" Width="120"/>
                                                    <TextBlock Grid.Column="1" Text="{Binding Price, StringFormat='× {0:N2}'}" Classes="muted" VerticalAlignment="Center" Margin="10,0"/>
                                                    <TextBlock Grid.Column="2" Text="{Binding LineSum, StringFormat='{}{0:N2}'}" FontWeight="SemiBold" Foreground="{DynamicResource Text}" VerticalAlignment="Center"/>
                                                </Grid>
                                            </StackPanel>
                                        </DockPanel>
                                    </Border>
                                </DataTemplate>
                            </ItemsControl.ItemTemplate>
                        </ItemsControl>
                    </ScrollViewer>
                </DockPanel>
            </Border>
        </Grid>
    </DockPanel>
</UserControl>