YZWater3/src/YZWater.Avalonia/Views/MainWindow.axaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:vm="using:YZWater.Core.ViewModels"
        xmlns:views="using:YZWater.Avalonia.Views"
        xmlns:conv="using:YZWater.Avalonia.Converters"
        xmlns:th="using:YZWater.Avalonia.Controls"
        x:Class="YZWater.Avalonia.Views.MainWindow"
        x:DataType="vm:MainViewModel"
        Title="{Binding Title}"
        Icon="/Assets/app-icon.png"
        WindowDecorations="None"
        Width="1280" Height="800"
        MinWidth="1024" MinHeight="700"
        WindowStartupLocation="CenterScreen"
        WindowState="Maximized"
        Background="{DynamicResource AppBgBrush}">

    <Window.DataContext>
        <vm:MainViewModel/>
    </Window.DataContext>

    <DockPanel>
        <!-- ═══ 自定义标题栏 ═══ -->
        <Border DockPanel.Dock="Top" Background="{DynamicResource NavBgBrush}" Height="32"
                PointerPressed="OnTitleBarPointerPressed" Cursor="Hand">
            <Grid ColumnDefinitions="Auto,*,Auto">
                <Image Source="/Assets/app-icon.png" Width="20" Height="20" Margin="8,0,4,0" VerticalAlignment="Center"/>
                <TextBlock Grid.Column="1" Text="{Binding Title}" FontSize="13" FontWeight="SemiBold"
                           VerticalAlignment="Center" Foreground="{DynamicResource TextPrimaryBrush}"/>
                <StackPanel Grid.Column="2" Orientation="Horizontal" VerticalAlignment="Center">
                    <Button Content="─" Click="OnMinimizeClick" Classes="chrome-btn"/>
                    <Button x:Name="MaximizeBtn" Content="☐" Click="OnMaximizeClick" Classes="chrome-btn"/>
                    <Button Content="✕" Click="OnCloseClick" Classes="chrome-btn"
                            Foreground="{DynamicResource DangerFgBrush}"/>
                </StackPanel>
            </Grid>
        </Border>

        <!-- ═══ 底部导航栏 ═══ -->
        <Border x:Name="NavBar" DockPanel.Dock="Bottom" Background="{DynamicResource NavBgBrush}"
                BorderBrush="{DynamicResource BorderBrush}" BorderThickness="0,1,0,0" Padding="4,0">
            <Grid ColumnDefinitions="*,Auto,Auto,Auto">
                <!-- 导航按钮 -->
                <StackPanel Grid.Column="0" Orientation="Horizontal" HorizontalAlignment="Center" Spacing="0">
                    <Button Command="{Binding ShowViewACommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabAActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavProcess}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabAActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabAActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                    <Border Background="{DynamicResource BorderBrush}" Width="1" Height="20" VerticalAlignment="Center"/>
                    <Button Command="{Binding ShowViewBCommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabBActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavParams}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabBActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabBActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                    <Border Background="{DynamicResource BorderBrush}" Width="1" Height="20" VerticalAlignment="Center"/>
                    <Button Command="{Binding ShowViewCCommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabCActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavFlow}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabCActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabCActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                    <Border Background="{DynamicResource BorderBrush}" Width="1" Height="20" VerticalAlignment="Center"/>
                    <Button Command="{Binding ShowViewDCommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabDActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavAlarm}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabDActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabDActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                    <Border Background="{DynamicResource BorderBrush}" Width="1" Height="20" VerticalAlignment="Center"/>
                    <Button Command="{Binding ShowViewECommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabEActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavAbout}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabEActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabEActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                    <Border Background="{DynamicResource BorderBrush}" Width="1" Height="20" VerticalAlignment="Center"/>
                    <Button Command="{Binding ShowViewFCommand}" Classes="nav-tab">
                        <StackPanel Orientation="Horizontal" Spacing="6">
                            <Border Width="3" Height="14" CornerRadius="1"
                                    Background="{Binding IsTabFActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                            <TextBlock Text="{Binding NavAudit}" FontFamily="Consolas, monospace" FontSize="11"
                                       FontWeight="{Binding IsTabFActive, Converter={x:Static conv:BoolConverters.ToFontWeight}}"
                                       Foreground="{Binding IsTabFActive, Converter={x:Static conv:BoolConverters.ToBrush}}"/>
                        </StackPanel>
                    </Button>
                </StackPanel>

                <!-- 主题切换 -->
                <Button Grid.Column="1" Command="{Binding ToggleThemeCommand}" Classes="btn-toggle" Margin="8,0">
                    <StackPanel Orientation="Horizontal" Spacing="6">
                        <TextBlock Text="{Binding ThemeIcon}" FontSize="14" VerticalAlignment="Center"/>
                        <TextBlock Text="THEME" FontSize="10" VerticalAlignment="Center"
                                   Foreground="{DynamicResource TextSecondaryBrush}"/>
                    </StackPanel>
                </Button>

                <!-- 语言切换 -->
                <Button Grid.Column="2" Command="{Binding ToggleLanguageCommand}" Classes="btn-toggle" Margin="0,0,8,0">
                    <StackPanel Orientation="Horizontal" Spacing="6">
                        <TextBlock Text="{Binding LangIcon}" FontSize="12" FontWeight="Bold" VerticalAlignment="Center"/>
                        <TextBlock Text="LANG" FontSize="10" VerticalAlignment="Center"
                                   Foreground="{DynamicResource TextSecondaryBrush}"/>
                    </StackPanel>
                </Button>

                <!-- 用户信息 + 模式指示 -->
                <StackPanel Grid.Column="3" Orientation="Horizontal" Spacing="8" Margin="8,0" VerticalAlignment="Center">
                    <Border Background="{DynamicResource CardBgBrush}" CornerRadius="4" Padding="6,2">
                        <TextBlock Text="{Binding HubStatusText}" FontSize="10" Foreground="{DynamicResource TextSecondaryBrush}"/>
                    </Border>
                    <!-- 用户信息区域（认证禁用时隐藏） -->
                    <TextBlock Text="{Binding CurrentUserName}" FontSize="12" FontWeight="Bold" VerticalAlignment="Center"
                               IsVisible="{Binding ShowUserInfo}"/>
                    <Border Background="{DynamicResource PrimaryBrush}" CornerRadius="4" Padding="6,2"
                            IsVisible="{Binding ShowUserInfo}">
                        <TextBlock Text="{Binding CurrentUserRole}" FontSize="10" Foreground="White"/>
                    </Border>
                    <Button Command="{Binding ToggleUserDialogCommand}" IsVisible="{Binding CanManageUsers}"
                            Content="{Binding UserManageText}" Padding="8,4" FontSize="11" Classes="btn-primary"/>
                    <Button Command="{Binding LogoutCommand}" Content="{Binding LogoutText}" Padding="8,4" FontSize="11" Classes="btn-danger"
                            IsVisible="{Binding ShowUserInfo}"/>
                </StackPanel>
            </Grid>
        </Border>

        <!-- ═══ PLC 通信中断横幅（ISA-101: 断线时全局可见警告）═══
             独立占一行，不再浮在内容区顶部：压在页面标题栏上会把标题一起糊掉，
             而断线恰恰是最需要看清"现在在哪个页面"的时候 -->
        <Border DockPanel.Dock="Top" IsVisible="{Binding !IsPlcConnected}"
                Background="#F39C12" Padding="12,6">
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Spacing="8">
                <TextBlock Text="⚠" FontSize="16" VerticalAlignment="Center" Foreground="#2C3E50"/>
                <TextBlock Text="{Binding PlcCommInterruptedText}"
                           FontSize="13" FontWeight="Bold" VerticalAlignment="Center" Foreground="#2C3E50"/>
            </StackPanel>
        </Border>

        <!-- ═══ 主内容区域 ═══ -->
        <Panel>
            <!-- 视图内容（通过 CurrentView + DataTemplate 切换） -->
            <ContentControl Content="{Binding CurrentView}"/>

            <!-- ═══ 用户管理对话框 ═══ -->
            <Border IsVisible="{Binding ShowUserDialog}" ZIndex="100" Background="#CC000000">
                <Border Background="{DynamicResource CardBgBrush}" CornerRadius="12" Padding="24"
                        MaxWidth="600" MaxHeight="500" VerticalAlignment="Center" HorizontalAlignment="Center"
                        BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1">
                    <DockPanel>
                        <StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Spacing="12" Margin="0,0,0,16">
                            <TextBlock Text="{Binding UserManageText}" FontSize="18" FontWeight="Bold"/>
                            <Button Content="{Binding CloseText}" Command="{Binding ToggleUserDialogCommand}" HorizontalAlignment="Right" Classes="btn-danger"/>
                        </StackPanel>

                        <!-- 创建用户 -->
                        <Border DockPanel.Dock="Top" Background="{DynamicResource CardBgBrush}" CornerRadius="8" Padding="12" Margin="0,0,0,12">
                            <StackPanel Spacing="8">
                                <TextBlock Text="{Binding CreateNewUserText}" FontWeight="Bold" FontSize="14"/>
                                <StackPanel Orientation="Horizontal" Spacing="8">
                                    <TextBox Text="{Binding NewUserName}" PlaceholderText="{Binding UserNameLabel}" Width="120"/>
                                    <TextBox Text="{Binding NewUserPassword}" PlaceholderText="{Binding PasswordLabel}" PasswordChar="●" Width="120"/>
                                    <TextBox Text="{Binding NewUserDisplayName}" PlaceholderText="{Binding DisplayNameLabel}" Width="120"/>
                                    <ComboBox SelectedIndex="{Binding NewUserRole}" Width="100">
                                        <ComboBoxItem Content="Viewer"/>
                                        <ComboBoxItem Content="Operator"/>
                                        <ComboBoxItem Content="Engineer"/>
                                        <ComboBoxItem Content="Admin"/>
                                    </ComboBox>
                                    <Button Content="{Binding CreateText}" Command="{Binding CreateUserCommand}" Classes="btn-success"/>
                                </StackPanel>
                                <TextBlock Text="{Binding UserManageMessage}" Foreground="Red" FontSize="12"/>
                            </StackPanel>
                        </Border>

                        <!-- 用户列表 -->
                        <DataGrid ItemsSource="{Binding UserList}" AutoGenerateColumns="False" IsReadOnly="True"
                                  GridLinesVisibility="Horizontal" CanUserResizeColumns="True">
                            <DataGrid.Columns>
                                <DataGridTextColumn Header="User" Binding="{Binding UserName}" Width="100"/>
                                <DataGridTextColumn Header="Name" Binding="{Binding DisplayName}" Width="120"/>
                                <DataGridTextColumn Header="Role" Binding="{Binding Role}" Width="80"/>
                                <DataGridTextColumn Header="Status" Binding="{Binding IsActive}" Width="60"/>
                                <DataGridTextColumn Header="Last Login" Binding="{Binding LastLoginTime, StringFormat='yyyy-MM-dd HH:mm'}" Width="140"/>
                                <DataGridTemplateColumn Header="Action" Width="80">
                                    <DataGridTemplateColumn.CellTemplate>
                                        <DataTemplate>
                                            <Button Content="{Binding IsActive, Converter={x:Static conv:BoolConverters.ToActiveText}}"
                                                    Command="{Binding $parent[DataGrid].((vm:MainViewModel)DataContext).ToggleUserActiveCommand}"
                                                    CommandParameter="{Binding}"
                                                    Classes="btn-toggle" Padding="6,2" FontSize="11"/>
                                        </DataTemplate>
                                    </DataGridTemplateColumn.CellTemplate>
                                </DataGridTemplateColumn>
                            </DataGrid.Columns>
                        </DataGrid>
                    </DockPanel>
                </Border>
            </Border>

            <!-- ═══ 退出确认对话框（破坏性操作需二次确认，防止误触 ✕ 停屏） ═══ -->
            <Border IsVisible="{Binding ShowExitDialog}" ZIndex="110" Background="#CC000000">
                <Border Background="{DynamicResource CardBgBrush}" CornerRadius="12" Padding="24"
                        MaxWidth="420" VerticalAlignment="Center" HorizontalAlignment="Center"
                        BorderBrush="{DynamicResource DangerFgBrush}" BorderThickness="1">
                    <StackPanel Spacing="16">
                        <StackPanel Orientation="Horizontal" Spacing="10">
                            <TextBlock Text="⚠" FontSize="18" FontFamily="Segoe UI Symbol" VerticalAlignment="Center"
                                       Foreground="{DynamicResource DangerFgBrush}"/>
                            <TextBlock Text="{Binding ExitConfirmTitleText}" FontSize="18" FontWeight="Bold"
                                       VerticalAlignment="Center"/>
                        </StackPanel>
                        <TextBlock Text="{Binding ExitConfirmMessageText}" FontSize="13" TextWrapping="Wrap"
                                   Foreground="{DynamicResource TextSecondaryBrush}"/>
                        <StackPanel Orientation="Horizontal" Spacing="12" HorizontalAlignment="Right">
                            <Button Content="{Binding CancelText}" Click="OnExitCancelClick"
                                    Classes="btn-toggle" MinWidth="88"/>
                            <Button Content="{Binding ConfirmText}" Click="OnExitConfirmClick"
                                    Classes="btn-danger" MinWidth="88"/>
                        </StackPanel>
                    </StackPanel>
                </Border>
            </Border>
        </Panel>
    </DockPanel>
</Window>