86 lines
3.4 KiB
C#
86 lines
3.4 KiB
C#
namespace FluidExplorer.Navigation;
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public enum LocationKind
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{
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Home,
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Gallery,
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QuickAccess,
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ThisPc,
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RecycleBin,
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Network,
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Drive,
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Folder,
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Search
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}
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/// <summary>一个可导航的位置（侧边栏节点、面包屑、标签页都基于它）。</summary>
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public sealed record NavigationLocation(LocationKind Kind, string Path, string DisplayName, string Glyph)
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{
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public static NavigationLocation Home { get; } = new(LocationKind.Home, Services.Shell.KnownFolders.HomeParsingName, "主页", "\uE80F");
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public static NavigationLocation Gallery { get; } = new(LocationKind.Gallery, Services.Shell.KnownFolders.GalleryParsingName, "图库", "\uE91B");
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public static NavigationLocation ThisPc { get; } = new(LocationKind.ThisPc, Services.Shell.KnownFolders.ThisPcParsingName, "此电脑", "\uE977");
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public static NavigationLocation RecycleBin { get; } = new(LocationKind.RecycleBin, Services.Shell.KnownFolders.RecycleBinParsingName, "回收站", "\uE74D");
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public static NavigationLocation Network { get; } = new(LocationKind.Network, Services.Shell.KnownFolders.NetworkParsingName, "网络", "\uE968");
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public static NavigationLocation FromPath(string path, LocationKind kind = LocationKind.Folder)
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{
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var normalized = Services.FileSystem.PathHelper.NormalizeDisplay(path);
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return new NavigationLocation(kind, normalized, Services.FileSystem.PathHelper.GetName(normalized), "\uE8B7");
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}
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public static NavigationLocation FromDrive(DriveItemInfo drive)
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=> new(LocationKind.Drive, drive.RootPath, drive.DisplayName, drive.Glyph);
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/// <summary>是否是外壳虚拟位置（不能用 System.IO 直接枚举，需要走 shell: 视图）。</summary>
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public bool IsVirtual => Kind is LocationKind.Home or LocationKind.Gallery or LocationKind.ThisPc
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or LocationKind.RecycleBin or LocationKind.Network or LocationKind.Search
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|| Path.StartsWith("::", StringComparison.Ordinal) || Path.StartsWith("shell:", StringComparison.OrdinalIgnoreCase);
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}
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public readonly record struct DriveItemInfo(string RootPath, string DisplayName, string Glyph);
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/// <summary>前进/后退历史（资源管理器行为：新导航截断前进栈）。</summary>
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public sealed class NavigationHistory
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{
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private readonly List<NavigationLocation> _back = [];
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private readonly List<NavigationLocation> _forward = [];
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private const int Capacity = 64;
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public bool CanGoBack => _back.Count > 1;
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public bool CanGoForward => _forward.Count > 0;
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public NavigationLocation? Current => _back.Count > 0 ? _back[^1] : null;
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public void Push(NavigationLocation location)
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{
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if (_back.Count > 0 && _back[^1] == location) return;
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_back.Add(location);
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if (_back.Count > Capacity) _back.RemoveAt(0);
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_forward.Clear();
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}
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public NavigationLocation? Back()
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{
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if (!CanGoBack) return null;
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var current = _back[^1];
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_back.RemoveAt(_back.Count - 1);
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_forward.Add(current);
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return _back[^1];
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}
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public NavigationLocation? Forward()
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{
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if (_forward.Count == 0) return null;
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var next = _forward[^1];
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_forward.RemoveAt(_forward.Count - 1);
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_back.Add(next);
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return next;
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}
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public void Reset(NavigationLocation location)
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{
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_back.Clear();
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_forward.Clear();
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_back.Add(location);
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}
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}
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