Initial commit: FluidExplorer：从零实现的 WinUI 3 文件资源管理器替代品（Mica、命令栏、面包屑）

2026-09-19 11:54:03 +08:00
commit 5780fde61a
60 changed files with 15035 additions and 0 deletions
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+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using FluidExplorer.Navigation;
+using FluidExplorer.Services.FileSystem;
+using FluidExplorer.Services.Search;
+using FluidExplorer.Services.Shell;
+using Microsoft.UI.Xaml.Media;
+
+namespace FluidExplorer.ViewModels;
+
+/// <summary>侧边栏的一个节点（可展开的"此电脑"、可收藏的文件夹、驱动器等）。</summary>
+public sealed partial class SidebarNode : ObservableObject
+{
+    [ObservableProperty] private bool _isExpanded;
+    [ObservableProperty] private bool _isSelected;
+
+    public SidebarNode(string displayName, string glyph, NavigationLocation location, bool isExpandable = false)
+    {
+        DisplayName = displayName;
+        Glyph = glyph;
+        Location = location;
+        IsExpandable = isExpandable;
+    }
+
+    public string DisplayName { get; }
+    public string Glyph { get; }
+    public NavigationLocation Location { get; }
+    public bool IsExpandable { get; }
+    public bool CanPin { get; init; }
+
+    public ObservableCollection<SidebarNode> Children { get; } = [];
+
+    public bool HasUnrealizedChildren { get; set; }
+
+    /// <summary>当前文件夹是否属于该节点（用于侧边栏高亮，对齐资源管理器）。</summary>
+    public bool Contains(string path)
+    {
+        if (string.IsNullOrEmpty(path)) return false;
+        if (Location.Kind is LocationKind.ThisPc or LocationKind.RecycleBin or LocationKind.Network or LocationKind.Home)
+            return string.Equals(Location.Path, path, StringComparison.OrdinalIgnoreCase);
+        var root = Location.Path.TrimEnd('\\');
+        return path.StartsWith(root, StringComparison.OrdinalIgnoreCase);
+    }
+
+    public static SidebarNode Create(string name, string glyph, NavigationLocation location, bool expandable = false, bool canPin = false)
+        => new(name, glyph, location, expandable) { CanPin = canPin };
+}
+
+/// <summary>面包屑的一段。</summary>
+public sealed partial class BreadcrumbSegment : ObservableObject
+{
+    public BreadcrumbSegment(string displayName, string path, bool isDriveRoot)
+    {
+        DisplayName = displayName;
+        Path = path;
+        IsDriveRoot = isDriveRoot;
+    }
+
+    public string DisplayName { get; }
+    public string Path { get; }
+    public bool IsDriveRoot { get; }
+}
+
+/// <summary>搜索结果列表里的一行。</summary>
+public sealed partial class SearchResultItem : ObservableObject
+{
+    private ImageSource? _icon;
+    private ImageSource? _thumbnail;
+
+    public SearchResultItem(SearchHit hit) => Hit = hit;
+
+    public SearchHit Hit { get; }
+    public string Name => Hit.Name;
+    public string Directory => Hit.Directory;
+    public string FullPath => Hit.Path;
+    public bool IsDirectory => Hit.IsDirectory;
+    public long Size => Hit.Size;
+    public string SizeText => Hit.Size < 0 ? "—" : Hit.IsDirectory ? string.Empty : Models.FileEntry.FormatSize(Hit.Size);
+    public string ModifiedText => Hit.ModifiedUtc == DateTime.MinValue || Hit.ModifiedUtc == default
+        ? "—"
+        : Hit.ModifiedUtc.ToLocalTime().ToString("yyyy/MM/dd HH:mm");
+    public string TypeText => Hit.IsDirectory ? "文件夹" : TypeNameResolver.GetTypeName(Hit.Extension, false);
+
+    public ImageSource? Icon
+    {
+        get => _icon;
+        set { if (!ReferenceEquals(_icon, value)) { _icon = value; OnPropertyChanged(); } }
+    }
+
+    public ImageSource? Thumbnail
+    {
+        get => _thumbnail;
+        set { if (!ReferenceEquals(_thumbnail, value)) { _thumbnail = value; OnPropertyChanged(); } }
+    }
+
+    public DateTime SortModified => Hit.ModifiedUtc;
+}