Initial commit: .NET MAUI Linux Platform

Complete Linux platform implementation for .NET MAUI with: - 35+ Skia-rendered controls (Button, Label, Entry, CarouselView, etc.) - Platform services (Clipboard, FilePicker, Notifications, DragDrop, etc.) - Accessibility support (AT-SPI2, High Contrast) - HiDPI and Input Method support - 216 unit tests - CI/CD workflows - Project templates - Documentation 🤖 Generated with Claude Code
2025-12-19 09:30:16 +00:00
commit d87124fef2
138 changed files with 32939 additions and 0 deletions
--- a/Handlers/SearchBarHandler.cs
+++ b/Handlers/SearchBarHandler.cs
@@ -0,0 +1,135 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Microsoft.Maui.Handlers;
+using Microsoft.Maui.Graphics;
+using SkiaSharp;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Handler for SearchBar on Linux using Skia rendering.
+/// Maps ISearchBar interface to SkiaSearchBar platform view.
+/// </summary>
+public partial class SearchBarHandler : ViewHandler<ISearchBar, SkiaSearchBar>
+{
+    public static IPropertyMapper<ISearchBar, SearchBarHandler> Mapper = new PropertyMapper<ISearchBar, SearchBarHandler>(ViewHandler.ViewMapper)
+    {
+        [nameof(ITextInput.Text)] = MapText,
+        [nameof(ITextStyle.TextColor)] = MapTextColor,
+        [nameof(ITextStyle.Font)] = MapFont,
+        [nameof(IPlaceholder.Placeholder)] = MapPlaceholder,
+        [nameof(IPlaceholder.PlaceholderColor)] = MapPlaceholderColor,
+        [nameof(ISearchBar.CancelButtonColor)] = MapCancelButtonColor,
+        [nameof(IView.Background)] = MapBackground,
+    };
+
+    public static CommandMapper<ISearchBar, SearchBarHandler> CommandMapper = new(ViewHandler.ViewCommandMapper)
+    {
+    };
+
+    public SearchBarHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public SearchBarHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaSearchBar CreatePlatformView()
+    {
+        return new SkiaSearchBar();
+    }
+
+    protected override void ConnectHandler(SkiaSearchBar platformView)
+    {
+        base.ConnectHandler(platformView);
+        platformView.TextChanged += OnTextChanged;
+        platformView.SearchButtonPressed += OnSearchButtonPressed;
+    }
+
+    protected override void DisconnectHandler(SkiaSearchBar platformView)
+    {
+        platformView.TextChanged -= OnTextChanged;
+        platformView.SearchButtonPressed -= OnSearchButtonPressed;
+        base.DisconnectHandler(platformView);
+    }
+
+    private void OnTextChanged(object? sender, TextChangedEventArgs e)
+    {
+        if (VirtualView is null || PlatformView is null) return;
+
+        if (VirtualView.Text != e.NewTextValue)
+        {
+            VirtualView.Text = e.NewTextValue ?? string.Empty;
+        }
+    }
+
+    private void OnSearchButtonPressed(object? sender, EventArgs e)
+    {
+        VirtualView?.SearchButtonPressed();
+    }
+
+    public static void MapText(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        if (handler.PlatformView.Text != searchBar.Text)
+            handler.PlatformView.Text = searchBar.Text ?? string.Empty;
+    }
+
+    public static void MapTextColor(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        if (searchBar.TextColor is not null)
+            handler.PlatformView.TextColor = searchBar.TextColor.ToSKColor();
+    }
+
+    public static void MapFont(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        var font = searchBar.Font;
+        if (font.Size > 0)
+            handler.PlatformView.FontSize = (float)font.Size;
+
+        if (!string.IsNullOrEmpty(font.Family))
+            handler.PlatformView.FontFamily = font.Family;
+    }
+
+    public static void MapPlaceholder(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+        handler.PlatformView.Placeholder = searchBar.Placeholder ?? string.Empty;
+    }
+
+    public static void MapPlaceholderColor(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        if (searchBar.PlaceholderColor is not null)
+            handler.PlatformView.PlaceholderColor = searchBar.PlaceholderColor.ToSKColor();
+    }
+
+    public static void MapCancelButtonColor(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        // CancelButtonColor maps to ClearButtonColor
+        if (searchBar.CancelButtonColor is not null)
+            handler.PlatformView.ClearButtonColor = searchBar.CancelButtonColor.ToSKColor();
+    }
+
+
+    public static void MapBackground(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView is null) return;
+
+        if (searchBar.Background is SolidPaint solidPaint && solidPaint.Color is not null)
+        {
+            handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+        }
+    }
+}