Add search panel support in CSV viewer

QuickLook.Plugin/QuickLook.Plugin.CsvViewer/Controls/SearchPanel.xaml

@@ -0,0 +1,85 @@
+<UserControl x:Class="QuickLook.Plugin.CsvViewer.Controls.SearchPanel"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             d:DesignHeight="35"
+             d:DesignWidth="300"
+             mc:Ignorable="d">
+    <Border Margin="0,-1,16,0"
+            Padding="2"
+            HorizontalAlignment="Right"
+            VerticalAlignment="Top"
+            Background="{DynamicResource WindowBackground}"
+            BorderBrush="#102E2E3E"
+            BorderThickness="1"
+            CornerRadius="4"
+            Cursor="Arrow">
+        <StackPanel Orientation="Horizontal">
+            <TextBox Name="searchTextBox"
+                     Width="150"
+                     Height="29"
+                     Padding="4,5,0,0"
+                     FocusVisualStyle="{x:Null}"
+                     Focusable="True"
+                     KeyDown="SearchTextBox_KeyDown"
+                     TextChanged="SearchTextBox_TextChanged" />
+            <TextBlock Name="matchCountText"
+                       Width="50"
+                       Margin="4,0,0,0"
+                       VerticalAlignment="Center"
+                       FontSize="11"
+                       Foreground="{DynamicResource WindowTextForeground}"
+                       Text="" />
+            <Button Width="24"
+                    Height="24"
+                    Margin="3,3,0,3"
+                    Padding="0"
+                    Click="FindPrevious_Click"
+                    ToolTip="Find Previous (Shift+Enter)">
+                <!--  ChevronUp  -->
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="12"
+                           Text="&#xe70e;" />
+            </Button>
+            <Button Width="24"
+                    Height="24"
+                    Margin="3"
+                    Padding="0"
+                    Click="FindNext_Click"
+                    ToolTip="Find Next (Enter)">
+                <!--  ChevronDown  -->
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="12"
+                           Text="&#xe70d;" />
+            </Button>
+            <CheckBox Name="matchCaseCheckBox"
+                      Margin="3,0"
+                      VerticalAlignment="Center"
+                      Checked="MatchCase_Changed"
+                      Content="Match case"
+                      Unchecked="MatchCase_Changed" />
+            <Button Width="16"
+                    Height="16"
+                    Padding="0"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Top"
+                    HorizontalContentAlignment="Center"
+                    VerticalContentAlignment="Center"
+                    Click="CloseSearch_Click"
+                    Focusable="False"
+                    ToolTip="Close (Escape)">
+                <!--  CalculatorMultiply  -->
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="10"
+                           Text="&#xe947;" />
+            </Button>
+        </StackPanel>
+    </Border>
+</UserControl>

QuickLook.Plugin/QuickLook.Plugin.CsvViewer/Controls/SearchPanel.xaml.cs

@@ -0,0 +1,124 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace QuickLook.Plugin.CsvViewer.Controls;
+
+public partial class SearchPanel : UserControl
+{
+    public event EventHandler<SearchEventArgs> SearchRequested;
+    public event EventHandler<NavigateEventArgs> NavigateRequested;
+    public event EventHandler CloseRequested;
+
+    public SearchPanel()
+    {
+        InitializeComponent();
+    }
+
+    public string SearchText => searchTextBox.Text;
+    public bool MatchCase => matchCaseCheckBox.IsChecked == true;
+
+    public new void Focus()
+    {
+        searchTextBox.Focus();
+        searchTextBox.SelectAll();
+    }
+
+    public void UpdateMatchCount(int totalCount, int currentIndex)
+    {
+        if (totalCount == 0)
+        {
+            matchCountText.Text = string.IsNullOrEmpty(searchTextBox.Text) ? "" : "0/0";
+        }
+        else
+        {
+            matchCountText.Text = $"{currentIndex + 1}/{totalCount}";
+        }
+    }
+
+    private void SearchTextBox_TextChanged(object sender, TextChangedEventArgs e)
+    {
+        SearchRequested?.Invoke(this, new SearchEventArgs(searchTextBox.Text, MatchCase));
+    }
+
+    private void SearchTextBox_KeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter)
+        {
+            if (Keyboard.Modifiers == ModifierKeys.Shift)
+            {
+                FindPrevious_Click(sender, e);
+            }
+            else
+            {
+                FindNext_Click(sender, e);
+            }
+            e.Handled = true;
+        }
+        else if (e.Key == Key.Escape)
+        {
+            CloseSearch_Click(sender, e);
+            e.Handled = true;
+        }
+    }
+
+    private void FindPrevious_Click(object sender, RoutedEventArgs e)
+    {
+        NavigateRequested?.Invoke(this, new NavigateEventArgs(false));
+    }
+
+    private void FindNext_Click(object sender, RoutedEventArgs e)
+    {
+        NavigateRequested?.Invoke(this, new NavigateEventArgs(true));
+    }
+
+    private void MatchCase_Changed(object sender, RoutedEventArgs e)
+    {
+        SearchRequested?.Invoke(this, new SearchEventArgs(searchTextBox.Text, MatchCase));
+    }
+
+    private void CloseSearch_Click(object sender, RoutedEventArgs e)
+    {
+        CloseRequested?.Invoke(this, EventArgs.Empty);
+    }
+}
+
+public class SearchEventArgs : EventArgs
+{
+    public string SearchText { get; }
+    public bool MatchCase { get; }
+
+    public SearchEventArgs(string searchText, bool matchCase)
+    {
+        SearchText = searchText;
+        MatchCase = matchCase;
+    }
+}
+
+public class NavigateEventArgs : EventArgs
+{
+    public bool Forward { get; }
+
+    public NavigateEventArgs(bool forward)
+    {
+        Forward = forward;
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml

@@ -1,12 +1,14 @@
 <UserControl x:Class="QuickLook.Plugin.CsvViewer.CsvViewerPanel"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:controls="clr-namespace:QuickLook.Plugin.CsvViewer.Controls"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:local="clr-namespace:QuickLook.Plugin.CsvViewer"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              x:Name="csvViewer"
              d:DesignHeight="300"
              d:DesignWidth="300"
+             Focusable="True"
              mc:Ignorable="d">
     <UserControl.Resources>
         <ResourceDictionary>
@@ -30,5 +32,7 @@
                   ItemsSource="{Binding Path=Rows, ElementName=csvViewer}"
                   RowBackground="#00FFFFFF"
                   VerticalGridLinesBrush="#19000000" />
+        <controls:SearchPanel x:Name="searchPanel"
+                              Visibility="Collapsed" />
     </Grid>
 </UserControl>