Add port config, quick-switch toolbar, and dark mode styling

- Add Config button to each monitor for hiding ports, custom labels, and quick-switch selection
- Add quick-switch toolbar at top of popup for one-click input switching
- Add dark mode styling for all controls (buttons, combobox, dropdown items)
- Add loading spinner animation
- Add Exit button in header
- Fix dropdown selection to correctly show current input

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

DellMonitorControl/ConfigWindow.xaml

@@ -0,0 +1,50 @@
+<Window x:Class="DellMonitorControl.ConfigWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="Port Configuration"
+        Width="400" Height="450"
+        WindowStartupLocation="CenterScreen"
+        WindowStyle="None"
+        AllowsTransparency="True"
+        Background="Transparent"
+        ResizeMode="NoResize">
+
+    <Border Background="#F0333333" CornerRadius="8" BorderBrush="#555" BorderThickness="1" Margin="5">
+        <Border.Effect>
+            <DropShadowEffect BlurRadius="10" ShadowDepth="2" Opacity="0.5"/>
+        </Border.Effect>
+
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="*"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+
+            <!-- Header -->
+            <Border Grid.Row="0" Background="#444" CornerRadius="8,8,0,0" Padding="12,10">
+                <Grid>
+                    <TextBlock Name="tbHeader" Text="Configure Ports" Foreground="White" FontSize="14" FontWeight="SemiBold"/>
+                    <Button Content="X" HorizontalAlignment="Right" Width="24" Height="24"
+                            Background="Transparent" Foreground="White" BorderThickness="0"
+                            Click="CloseButton_Click" Cursor="Hand"/>
+                </Grid>
+            </Border>
+
+            <!-- Port List -->
+            <ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto" Padding="12">
+                <StackPanel Name="spPorts"/>
+            </ScrollViewer>
+
+            <!-- Footer Buttons -->
+            <Border Grid.Row="2" Background="#3A3A3A" CornerRadius="0,0,8,8" Padding="12,10">
+                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                    <Button Content="Cancel" Width="80" Margin="0,0,8,0" Click="CancelButton_Click"
+                            Background="#555" Foreground="White" BorderThickness="0" Padding="8,6"/>
+                    <Button Content="Save" Width="80" Click="SaveButton_Click"
+                            Background="#0078D4" Foreground="White" BorderThickness="0" Padding="8,6"/>
+                </StackPanel>
+            </Border>
+        </Grid>
+    </Border>
+</Window>

DellMonitorControl/ConfigWindow.xaml.cs

@@ -0,0 +1,180 @@
+using CMM.Library.Config;
+using CMM.Library.ViewModel;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+
+namespace DellMonitorControl;
+
+public partial class ConfigWindow : Window
+{
+    private readonly string _serialNumber;
+    private readonly string _monitorName;
+    private readonly List<InputSourceOption> _availablePorts;
+    private readonly List<PortConfigRow> _portRows = new();
+
+    public bool ConfigChanged { get; private set; }
+
+    public ConfigWindow(string serialNumber, string monitorName, List<InputSourceOption> availablePorts)
+    {
+        InitializeComponent();
+        _serialNumber = serialNumber;
+        _monitorName = monitorName;
+        _availablePorts = availablePorts;
+
+        tbHeader.Text = $"Configure: {monitorName}";
+        LoadPortConfiguration();
+    }
+
+    private void LoadPortConfiguration()
+    {
+        var config = MonitorConfigManager.GetMonitorConfig(_serialNumber);
+        spPorts.Children.Clear();
+        _portRows.Clear();
+
+        foreach (var port in _availablePorts)
+        {
+            var existingPortConfig = config.Ports.FirstOrDefault(p => p.VcpValue == port.Value);
+
+            var row = new PortConfigRow
+            {
+                VcpValue = port.Value,
+                DefaultName = port.Name,
+                CustomLabel = existingPortConfig?.CustomLabel ?? "",
+                IsHidden = existingPortConfig?.IsHidden ?? false,
+                ShowInQuickSwitch = existingPortConfig?.ShowInQuickSwitch ?? false
+            };
+
+            _portRows.Add(row);
+            spPorts.Children.Add(CreatePortRow(row));
+        }
+    }
+
+    private UIElement CreatePortRow(PortConfigRow row)
+    {
+        var container = new Border
+        {
+            Background = new SolidColorBrush(Color.FromRgb(60, 60, 60)),
+            CornerRadius = new CornerRadius(4),
+            Padding = new Thickness(10),
+            Margin = new Thickness(0, 0, 0, 8)
+        };
+
+        var grid = new Grid();
+        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
+        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
+        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
+
+        // Row 1: Port name and Hide checkbox
+        var row1 = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 0, 0, 6) };
+        row1.Children.Add(new TextBlock
+        {
+            Text = row.DefaultName,
+            Foreground = Brushes.White,
+            FontWeight = FontWeights.SemiBold,
+            FontSize = 13,
+            Width = 120,
+            VerticalAlignment = VerticalAlignment.Center
+        });
+
+        var hideCheck = new CheckBox
+        {
+            Content = "Hide",
+            IsChecked = row.IsHidden,
+            Foreground = Brushes.LightGray,
+            VerticalAlignment = VerticalAlignment.Center,
+            Margin = new Thickness(10, 0, 0, 0)
+        };
+        hideCheck.Checked += (s, e) => row.IsHidden = true;
+        hideCheck.Unchecked += (s, e) => row.IsHidden = false;
+        row1.Children.Add(hideCheck);
+
+        Grid.SetRow(row1, 0);
+        grid.Children.Add(row1);
+
+        // Row 2: Custom label
+        var row2 = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 0, 0, 6) };
+        row2.Children.Add(new TextBlock
+        {
+            Text = "Label:",
+            Foreground = Brushes.LightGray,
+            FontSize = 12,
+            Width = 50,
+            VerticalAlignment = VerticalAlignment.Center
+        });
+
+        var labelBox = new TextBox
+        {
+            Text = row.CustomLabel,
+            Width = 200,
+            Background = new SolidColorBrush(Color.FromRgb(50, 50, 50)),
+            Foreground = Brushes.White,
+            BorderBrush = new SolidColorBrush(Color.FromRgb(80, 80, 80)),
+            Padding = new Thickness(6, 4, 6, 4)
+        };
+        labelBox.TextChanged += (s, e) => row.CustomLabel = labelBox.Text;
+        row2.Children.Add(labelBox);
+
+        Grid.SetRow(row2, 1);
+        grid.Children.Add(row2);
+
+        // Row 3: Quick switch checkbox
+        var quickSwitchCheck = new CheckBox
+        {
+            Content = "Show in quick-switch toolbar",
+            IsChecked = row.ShowInQuickSwitch,
+            Foreground = Brushes.LightGray,
+            FontSize = 12
+        };
+        quickSwitchCheck.Checked += (s, e) => row.ShowInQuickSwitch = true;
+        quickSwitchCheck.Unchecked += (s, e) => row.ShowInQuickSwitch = false;
+
+        Grid.SetRow(quickSwitchCheck, 2);
+        grid.Children.Add(quickSwitchCheck);
+
+        container.Child = grid;
+        return container;
+    }
+
+    private void SaveButton_Click(object sender, RoutedEventArgs e)
+    {
+        var config = new MonitorConfig
+        {
+            SerialNumber = _serialNumber,
+            MonitorName = _monitorName,
+            Ports = _portRows.Select(r => new PortConfig
+            {
+                VcpValue = r.VcpValue,
+                DefaultName = r.DefaultName,
+                CustomLabel = r.CustomLabel,
+                IsHidden = r.IsHidden,
+                ShowInQuickSwitch = r.ShowInQuickSwitch
+            }).ToList()
+        };
+
+        MonitorConfigManager.SaveMonitorConfig(config);
+        ConfigChanged = true;
+        Close();
+    }
+
+    private void CancelButton_Click(object sender, RoutedEventArgs e)
+    {
+        Close();
+    }
+
+    private void CloseButton_Click(object sender, RoutedEventArgs e)
+    {
+        Close();
+    }
+
+    private class PortConfigRow
+    {
+        public int VcpValue { get; set; }
+        public string DefaultName { get; set; } = "";
+        public string CustomLabel { get; set; } = "";
+        public bool IsHidden { get; set; }
+        public bool ShowInQuickSwitch { get; set; }
+    }
+}

DellMonitorControl/MainWindow.xaml

@@ -1,4 +1,4 @@
-<Window x:Class="DellMonitorControl.MainWindow"
+<Window x:Class="DellMonitorControl.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         Title="Monitor Control"
@@ -12,6 +12,166 @@
         Topmost="True"
         Deactivated="Window_Deactivated">
 
+    <Window.Resources>
+        <!-- Dark Button Style with proper hover -->
+        <Style x:Key="DarkButton" TargetType="Button">
+            <Setter Property="Background" Value="#464646"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="BorderBrush" Value="#646464"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="Padding" Value="8,4"/>
+            <Setter Property="Cursor" Value="Hand"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}"
+                                Padding="{TemplateBinding Padding}"
+                                CornerRadius="3">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#0056A0"/>
+                            </Trigger>
+                            <Trigger Property="IsPressed" Value="True">
+                                <Setter Property="Background" Value="#004080"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Dark ComboBox Style -->
+        <Style x:Key="DarkComboBox" TargetType="ComboBox">
+            <Setter Property="Background" Value="#3A3A3A"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="BorderBrush" Value="#555"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="Padding" Value="6,4"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="ComboBox">
+                        <Grid>
+                            <ToggleButton x:Name="ToggleButton"
+                                          Background="{TemplateBinding Background}"
+                                          BorderBrush="{TemplateBinding BorderBrush}"
+                                          BorderThickness="{TemplateBinding BorderThickness}"
+                                          IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
+                                          ClickMode="Press">
+                                <ToggleButton.Template>
+                                    <ControlTemplate TargetType="ToggleButton">
+                                        <Border Background="{TemplateBinding Background}"
+                                                BorderBrush="{TemplateBinding BorderBrush}"
+                                                BorderThickness="{TemplateBinding BorderThickness}"
+                                                CornerRadius="3">
+                                            <Grid>
+                                                <Grid.ColumnDefinitions>
+                                                    <ColumnDefinition/>
+                                                    <ColumnDefinition Width="20"/>
+                                                </Grid.ColumnDefinitions>
+                                                <ContentPresenter Grid.Column="0"/>
+                                                <Path Grid.Column="1" Data="M0,0 L4,4 L8,0" Stroke="White" StrokeThickness="1.5"
+                                                      HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                                            </Grid>
+                                        </Border>
+                                        <ControlTemplate.Triggers>
+                                            <Trigger Property="IsMouseOver" Value="True">
+                                                <Setter Property="Background" Value="#4A4A4A"/>
+                                            </Trigger>
+                                        </ControlTemplate.Triggers>
+                                    </ControlTemplate>
+                                </ToggleButton.Template>
+                            </ToggleButton>
+                            <ContentPresenter x:Name="ContentSite"
+                                              Content="{TemplateBinding SelectionBoxItem}"
+                                              ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
+                                              Margin="8,4,28,4"
+                                              VerticalAlignment="Center"
+                                              HorizontalAlignment="Left"
+                                              IsHitTestVisible="False"/>
+                            <Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}"
+                                   AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
+                                <Border x:Name="DropDown" Background="#3A3A3A" BorderBrush="#555" BorderThickness="1"
+                                        MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}"
+                                        CornerRadius="3" Margin="0,2,0,0">
+                                    <ScrollViewer SnapsToDevicePixels="True">
+                                        <StackPanel IsItemsHost="True"/>
+                                    </ScrollViewer>
+                                </Border>
+                            </Popup>
+                        </Grid>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Dark ComboBoxItem Style -->
+        <Style x:Key="DarkComboBoxItem" TargetType="ComboBoxItem">
+            <Setter Property="Background" Value="#3A3A3A"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="Padding" Value="8,4"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="ComboBoxItem">
+                        <Border Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}">
+                            <ContentPresenter/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsHighlighted" Value="True">
+                                <Setter Property="Background" Value="#0056A0"/>
+                            </Trigger>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#4A4A4A"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Quick Switch Button Style -->
+        <Style x:Key="QuickSwitchButton" TargetType="Button">
+            <Setter Property="Background" Value="#3C3C3C"/>
+            <Setter Property="Foreground" Value="White"/>
+            <Setter Property="BorderBrush" Value="#0078D4"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="Padding" Value="10,5"/>
+            <Setter Property="Cursor" Value="Hand"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}"
+                                Padding="{TemplateBinding Padding}"
+                                CornerRadius="3">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#0056A0"/>
+                                <Setter Property="BorderBrush" Value="#0078D4"/>
+                            </Trigger>
+                            <Trigger Property="IsPressed" Value="True">
+                                <Setter Property="Background" Value="#004080"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Spinner Animation -->
+        <Storyboard x:Key="SpinnerAnimation" RepeatBehavior="Forever">
+            <DoubleAnimation Storyboard.TargetName="SpinnerRotate"
+                             Storyboard.TargetProperty="Angle"
+                             From="0" To="360" Duration="0:0:1"/>
+        </Storyboard>
+    </Window.Resources>
+
     <Border Background="#F0333333" CornerRadius="8" BorderBrush="#555" BorderThickness="1" Margin="5">
         <Border.Effect>
             <DropShadowEffect BlurRadius="10" ShadowDepth="2" Opacity="0.5"/>
@@ -19,20 +179,43 @@
 
         <Grid MinHeight="180">
             <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
                 <RowDefinition Height="Auto"/>
                 <RowDefinition Height="*"/>
             </Grid.RowDefinitions>
 
             <!-- Header -->
             <Border Grid.Row="0" Background="#444" CornerRadius="8,8,0,0" Padding="12,10">
-                <TextBlock Text="Monitor Control" Foreground="White" FontSize="14" FontWeight="SemiBold"/>
+                <Grid>
+                    <TextBlock Text="Monitor Control" Foreground="White" FontSize="14" FontWeight="SemiBold" VerticalAlignment="Center"/>
+                    <Button Content="Exit" HorizontalAlignment="Right" Click="ExitButton_Click"
+                            Style="{StaticResource DarkButton}" FontSize="11"/>
+                </Grid>
             </Border>
 
+            <!-- Quick Switch Toolbar -->
+            <WrapPanel Name="quickSwitchPanel" Grid.Row="1" Margin="8,8,8,0" Visibility="Collapsed"/>
+
             <!-- Content -->
-            <ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto" Padding="12">
+            <ScrollViewer Grid.Row="2" VerticalScrollBarVisibility="Auto" Padding="12">
                 <StackPanel Name="sp" VerticalAlignment="Center">
-                    <TextBlock Name="loadingText" Text="Loading..." Foreground="LightGray" FontSize="12"
-                               HorizontalAlignment="Center" Margin="0,40,0,40"/>
+                    <!-- Loading indicator with spinner -->
+                    <StackPanel Name="loadingPanel" HorizontalAlignment="Center" Margin="0,30,0,30">
+                        <Ellipse Width="24" Height="24" StrokeThickness="3" HorizontalAlignment="Center" Margin="0,0,0,10"
+                                 RenderTransformOrigin="0.5,0.5">
+                            <Ellipse.Stroke>
+                                <LinearGradientBrush>
+                                    <GradientStop Color="#0078D4" Offset="0"/>
+                                    <GradientStop Color="Transparent" Offset="1"/>
+                                </LinearGradientBrush>
+                            </Ellipse.Stroke>
+                            <Ellipse.RenderTransform>
+                                <RotateTransform x:Name="SpinnerRotate" Angle="0"/>
+                            </Ellipse.RenderTransform>
+                        </Ellipse>
+                        <TextBlock Name="loadingText" Text="Loading..." Foreground="LightGray" FontSize="12"
+                                   HorizontalAlignment="Center"/>
+                    </StackPanel>
                 </StackPanel>
             </ScrollViewer>
         </Grid>

DellMonitorControl/MainWindow.xaml.cs

@@ -1,4 +1,5 @@
-using CMM.Library.Method;
+using CMM.Library.Config;
+using CMM.Library.Method;
 using CMM.Library.ViewModel;
 using System;
 using System.Collections.Generic;
@@ -7,26 +8,32 @@ using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;
+using System.Windows.Media.Animation;
 
 namespace DellMonitorControl;
 
 public partial class MainWindow : Window
 {
+    private List<(XMonitor Monitor, List<InputSourceOption> Options)> _loadedMonitors = new();
+    private Storyboard? _spinnerStoryboard;
+
     public MainWindow()
     {
         InitializeComponent();
+        _spinnerStoryboard = (Storyboard)FindResource("SpinnerAnimation");
     }
 
     public void ShowNearTray()
     {
         var workArea = SystemParameters.WorkArea;
         Left = workArea.Right - Width - 10;
-        // Use estimated height since ActualHeight is 0 before render
         Top = workArea.Bottom - 350;
         Show();
         Activate();
 
-        // Reposition after layout is complete
+        // Start spinner
+        _spinnerStoryboard?.Begin(this, true);
+
         Dispatcher.BeginInvoke(new Action(() =>
         {
             Top = workArea.Bottom - ActualHeight - 10;
@@ -36,11 +43,18 @@ public partial class MainWindow : Window
     private void Window_Deactivated(object sender, EventArgs e)
     {
         Hide();
+        _spinnerStoryboard?.Stop(this);
+    }
+
+    private void ExitButton_Click(object sender, RoutedEventArgs e)
+    {
+        Application.Current.Shutdown();
     }
 
     public async Task LoadMonitors()
     {
         var newChildren = new List<UIElement>();
+        _loadedMonitors.Clear();
 
         try
         {
@@ -68,21 +82,19 @@ public partial class MainWindow : Window
                     var inputOptions = await CMMCommand.GetInputSourceOptions(m.SerialNumber);
                     var powerStatus = await CMMCommand.GetMonPowerStatus(m.SerialNumber) ?? "Unknown";
 
-                    // Monitor name header
-                    newChildren.Add(new TextBlock
-                    {
-                        Text = m.MonitorName,
-                        Foreground = Brushes.White,
-                        FontSize = 13,
-                        FontWeight = FontWeights.SemiBold,
-                        Margin = new Thickness(0, 8, 0, 6)
-                    });
+                    _loadedMonitors.Add((m, inputOptions));
+
+                    // Apply config to filter hidden ports and use custom labels
+                    var filteredOptions = MonitorConfigManager.ApplyConfigToOptions(m.SerialNumber, inputOptions);
+
+                    // Monitor name header with Config button
+                    newChildren.Add(CreateMonitorHeader(m, inputOptions));
 
                     newChildren.Add(CreateSliderRow("Brightness", brightness, m.SerialNumber, CMMCommand.SetBrightness));
                     newChildren.Add(CreateSliderRow("Contrast", contrast, m.SerialNumber, CMMCommand.SetContrast));
 
-                    if (inputOptions.Count > 0)
-                        newChildren.Add(CreateInputRow(inputSource, inputOptions, m.SerialNumber));
+                    if (filteredOptions.Count > 0)
+                        newChildren.Add(CreateInputRow(inputSource, filteredOptions, m.SerialNumber));
 
                     newChildren.Add(CreatePowerRow(powerStatus, m.SerialNumber));
 
@@ -94,6 +106,9 @@ public partial class MainWindow : Window
                 if (newChildren.Count > 0 && newChildren.Last() is Border)
                     newChildren.RemoveAt(newChildren.Count - 1);
             }
+
+            // Load quick-switch toolbar
+            LoadQuickSwitchToolbar();
         }
         catch (Exception ex)
         {
@@ -101,12 +116,14 @@ public partial class MainWindow : Window
             newChildren.Add(new TextBlock { Text = $"Error: {ex.Message}", Foreground = Brushes.OrangeRed, FontSize = 11, TextWrapping = TextWrapping.Wrap });
         }
 
+        // Stop spinner
+        _spinnerStoryboard?.Stop(this);
+
         sp.VerticalAlignment = VerticalAlignment.Top;
         sp.Children.Clear();
         foreach (var child in newChildren)
             sp.Children.Add(child);
 
-        // Reposition after content changes
         Dispatcher.BeginInvoke(new Action(() =>
         {
             var workArea = SystemParameters.WorkArea;
@@ -114,6 +131,112 @@ public partial class MainWindow : Window
         }), System.Windows.Threading.DispatcherPriority.Loaded);
     }
 
+    private void LoadQuickSwitchToolbar()
+    {
+        quickSwitchPanel.Children.Clear();
+        var quickItems = MonitorConfigManager.GetQuickSwitchItems();
+
+        if (quickItems.Count == 0)
+        {
+            quickSwitchPanel.Visibility = Visibility.Collapsed;
+            return;
+        }
+
+        quickSwitchPanel.Visibility = Visibility.Visible;
+
+        foreach (var item in quickItems)
+        {
+            var btn = new Button
+            {
+                Content = $"{item.PortLabel}",
+                ToolTip = $"{item.MonitorName}: {item.PortLabel}",
+                Margin = new Thickness(0, 0, 6, 6),
+                Style = (Style)FindResource("QuickSwitchButton"),
+                Tag = item
+            };
+
+            btn.Click += async (s, e) =>
+            {
+                if (s is Button b && b.Tag is QuickSwitchItem qsi)
+                {
+                    await CMMCommand.SetInputSource(qsi.MonitorSerialNumber, qsi.PortVcpValue);
+                    UpdateInputDropdown(qsi.MonitorSerialNumber, qsi.PortVcpValue);
+                }
+            };
+
+            quickSwitchPanel.Children.Add(btn);
+        }
+    }
+
+    private void UpdateInputDropdown(string serialNumber, int newValue)
+    {
+        foreach (var child in sp.Children)
+        {
+            if (child is StackPanel row)
+            {
+                foreach (var element in row.Children)
+                {
+                    if (element is ComboBox cb && cb.Tag is string sn && sn == serialNumber)
+                    {
+                        var options = cb.ItemsSource as List<InputSourceOption>;
+                        if (options != null)
+                        {
+                            var index = options.FindIndex(o => o.Value == newValue);
+                            if (index >= 0)
+                                cb.SelectedIndex = index;
+                        }
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    private StackPanel CreateMonitorHeader(XMonitor monitor, List<InputSourceOption> allOptions)
+    {
+        var row = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 8, 0, 6) };
+
+        row.Children.Add(new TextBlock
+        {
+            Text = monitor.MonitorName,
+            Foreground = Brushes.White,
+            FontSize = 13,
+            FontWeight = FontWeights.SemiBold,
+            VerticalAlignment = VerticalAlignment.Center
+        });
+
+        var configBtn = new Button
+        {
+            Content = "Config",
+            Margin = new Thickness(10, 0, 0, 0),
+            FontSize = 11,
+            Style = (Style)FindResource("DarkButton"),
+            Tag = (monitor, allOptions)
+        };
+
+        configBtn.Click += ConfigButton_Click;
+        row.Children.Add(configBtn);
+
+        return row;
+    }
+
+    private async void ConfigButton_Click(object sender, RoutedEventArgs e)
+    {
+        if (sender is Button btn && btn.Tag is ValueTuple<XMonitor, List<InputSourceOption>> data)
+        {
+            var (monitor, options) = data;
+            var configWindow = new ConfigWindow(monitor.SerialNumber, monitor.MonitorName, options);
+            configWindow.Owner = this;
+            configWindow.ShowDialog();
+
+            if (configWindow.ConfigChanged)
+            {
+                MonitorConfigManager.ClearCache();
+                await LoadMonitors();
+            }
+        }
+    }
+
     private StackPanel CreateSliderRow(string label, int value, string serialNumber, Func<string, int, Task> setCommand)
     {
         var row = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 3, 0, 3) };
@@ -139,17 +262,34 @@ public partial class MainWindow : Window
         var row = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 3, 0, 3) };
         row.Children.Add(new TextBlock { Text = "Input", Foreground = Brushes.LightGray, Width = 70, FontSize = 12, VerticalAlignment = VerticalAlignment.Center });
 
-        var combo = new ComboBox { Width = 170, ItemsSource = options, DisplayMemberPath = "Name", Tag = serialNumber };
-        if (currentInput.HasValue)
-            combo.SelectedItem = options.Find(o => o.Value == currentInput.Value);
-
-        combo.SelectionChanged += async (s, e) =>
+        var combo = new ComboBox
         {
-            if (s is ComboBox cb && cb.Tag is string sn && cb.SelectedItem is InputSourceOption opt)
-                await CMMCommand.SetInputSource(sn, opt.Value);
+            Width = 170,
+            ItemsSource = options,
+            DisplayMemberPath = "Name",
+            Tag = serialNumber,
+            Style = (Style)FindResource("DarkComboBox"),
+            ItemContainerStyle = (Style)FindResource("DarkComboBoxItem")
         };
 
         row.Children.Add(combo);
+
+        // Set selection AFTER adding to visual tree, BEFORE adding event handler
+        if (currentInput.HasValue)
+        {
+            var index = options.FindIndex(o => o.Value == currentInput.Value);
+            if (index >= 0)
+                combo.SelectedIndex = index;
+        }
+
+        // Add event handler AFTER setting the initial selection
+        combo.SelectionChanged += async (s, e) =>
+        {
+            // Only trigger if user actually changed the selection (not initial load)
+            if (s is ComboBox cb && cb.Tag is string sn && cb.SelectedItem is InputSourceOption opt && e.AddedItems.Count > 0 && e.RemovedItems.Count > 0)
+                await CMMCommand.SetInputSource(sn, opt.Value);
+        };
+
         return row;
     }
 
@@ -158,7 +298,13 @@ public partial class MainWindow : Window
         var row = new StackPanel { Orientation = Orientation.Horizontal, Margin = new Thickness(0, 3, 0, 3) };
         row.Children.Add(new TextBlock { Text = "Power", Foreground = Brushes.LightGray, Width = 70, FontSize = 12, VerticalAlignment = VerticalAlignment.Center });
 
-        var btn = new Button { Content = status, Width = 170, Tag = serialNumber };
+        var btn = new Button
+        {
+            Content = status,
+            Width = 170,
+            Tag = serialNumber,
+            Style = (Style)FindResource("DarkButton")
+        };
         btn.Click += async (s, e) =>
         {
             if (s is Button b && b.Tag is string sn)

Library/Config/MonitorConfigManager.cs

@@ -0,0 +1,125 @@
+using CMM.Library.Helpers;
+using CMM.Library.ViewModel;
+using System.IO;
+
+namespace CMM.Library.Config;
+
+public static class MonitorConfigManager
+{
+    private static readonly string ConfigFolder = Path.Combine(
+        Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+        "MonitorControl");
+
+    private static readonly string ConfigFile = Path.Combine(ConfigFolder, "config.json");
+
+    private static AppConfig? _cachedConfig;
+
+    public static AppConfig Load()
+    {
+        if (_cachedConfig != null)
+            return _cachedConfig;
+
+        if (!File.Exists(ConfigFile))
+        {
+            _cachedConfig = new AppConfig();
+            return _cachedConfig;
+        }
+
+        try
+        {
+            _cachedConfig = ConfigFile.JsonFormFile<AppConfig>() ?? new AppConfig();
+        }
+        catch
+        {
+            _cachedConfig = new AppConfig();
+        }
+
+        return _cachedConfig;
+    }
+
+    public static void Save(AppConfig config)
+    {
+        _cachedConfig = config;
+        config.FileToJson(ConfigFile);
+    }
+
+    public static MonitorConfig GetMonitorConfig(string serialNumber)
+    {
+        var config = Load();
+        return config.Monitors.FirstOrDefault(m => m.SerialNumber == serialNumber)
+               ?? new MonitorConfig { SerialNumber = serialNumber };
+    }
+
+    public static void SaveMonitorConfig(MonitorConfig monitorConfig)
+    {
+        var config = Load();
+        var existing = config.Monitors.FirstOrDefault(m => m.SerialNumber == monitorConfig.SerialNumber);
+
+        if (existing != null)
+            config.Monitors.Remove(existing);
+
+        config.Monitors.Add(monitorConfig);
+        Save(config);
+    }
+
+    public static List<QuickSwitchItem> GetQuickSwitchItems()
+    {
+        var config = Load();
+        var items = new List<QuickSwitchItem>();
+
+        foreach (var monitor in config.Monitors)
+        {
+            foreach (var port in monitor.Ports.Where(p => p.ShowInQuickSwitch && !p.IsHidden))
+            {
+                items.Add(new QuickSwitchItem
+                {
+                    MonitorSerialNumber = monitor.SerialNumber,
+                    MonitorName = monitor.MonitorName,
+                    PortVcpValue = port.VcpValue,
+                    PortLabel = port.DisplayName
+                });
+            }
+        }
+
+        return items;
+    }
+
+    public static List<InputSourceOption> ApplyConfigToOptions(
+        string serialNumber,
+        List<InputSourceOption> options)
+    {
+        var monitorConfig = GetMonitorConfig(serialNumber);
+
+        if (monitorConfig.Ports.Count == 0)
+            return options;
+
+        var result = new List<InputSourceOption>();
+
+        foreach (var option in options)
+        {
+            var portConfig = monitorConfig.Ports.FirstOrDefault(p => p.VcpValue == option.Value);
+
+            if (portConfig != null)
+            {
+                // Respect hidden setting - don't show hidden ports
+                if (portConfig.IsHidden)
+                    continue;
+
+                if (!string.IsNullOrWhiteSpace(portConfig.CustomLabel))
+                {
+                    result.Add(new InputSourceOption(option.Value, portConfig.CustomLabel));
+                    continue;
+                }
+            }
+
+            result.Add(option);
+        }
+
+        return result;
+    }
+
+    public static void ClearCache()
+    {
+        _cachedConfig = null;
+    }
+}

Library/ViewModel/MonitorConfig.cs

@@ -0,0 +1,44 @@
+namespace CMM.Library.ViewModel;
+
+/// <summary>
+/// Configuration for a single monitor's ports
+/// </summary>
+public class MonitorConfig
+{
+    public string SerialNumber { get; set; } = string.Empty;
+    public string MonitorName { get; set; } = string.Empty;
+    public List<PortConfig> Ports { get; set; } = new();
+}
+
+/// <summary>
+/// Configuration for a single input port
+/// </summary>
+public class PortConfig
+{
+    public int VcpValue { get; set; }
+    public string DefaultName { get; set; } = string.Empty;
+    public string CustomLabel { get; set; } = string.Empty;
+    public bool IsHidden { get; set; }
+    public bool ShowInQuickSwitch { get; set; }
+
+    public string DisplayName => string.IsNullOrWhiteSpace(CustomLabel) ? DefaultName : CustomLabel;
+}
+
+/// <summary>
+/// Quick switch item shown in toolbar
+/// </summary>
+public class QuickSwitchItem
+{
+    public string MonitorSerialNumber { get; set; } = string.Empty;
+    public string MonitorName { get; set; } = string.Empty;
+    public int PortVcpValue { get; set; }
+    public string PortLabel { get; set; } = string.Empty;
+}
+
+/// <summary>
+/// Root configuration object
+/// </summary>
+public class AppConfig
+{
+    public List<MonitorConfig> Monitors { get; set; } = new();
+}