refactor(3): VideoDownloader.Browser library - tabs/find/search-engine/zoom/bookmark-history stores extracted from App (66 GREEN)

VideoDownloader.Browser/Tabs/TabItem.cs

@@ -0,0 +1,66 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using Microsoft.Web.WebView2.Wpf;
+
+namespace VideoDownloader.Browser.Tabs;
+
+/// <summary>탭 하나의 상태. View(WebView2 컨트롤)는 앱 레이어에서 주입한다(단위 테스트에선 null).</summary>
+public sealed class TabItem : INotifyPropertyChanged
+{
+    public Guid Id { get; } = Guid.NewGuid();
+
+    /// <summary>탭에 연결된 WebView2 컨트롤. 닫힌 탭 재오픈 시 재생성될 수 있음.</summary>
+    public WebView2? View { get; set; }
+
+    /// <summary>CoreWebView2 (초기화 전 null)</summary>
+    public Microsoft.Web.WebView2.Core.CoreWebView2? Core => View?.CoreWebView2;
+    private string _title = "새 탭";
+    public string Title { get => _title; set => Set(ref _title, value); }
+
+    private string _url = "";
+    public string Url { get => _url; set => Set(ref _url, value); }
+
+    private bool _isPinned;
+    public bool IsPinned { get => _isPinned; set => Set(ref _isPinned, value); }
+
+    private bool _isActive;
+    public bool IsActive { get => _isActive; set => Set(ref _isActive, value); }
+
+    private bool _isAudioPlaying;
+    public bool IsAudioPlaying { get => _isAudioPlaying; set => Set(ref _isAudioPlaying, value); }
+
+    private bool _isMuted;
+    public bool IsMuted { get => _isMuted; set => Set(ref _isMuted, value); }
+
+    private bool _isSuspended;
+    public bool IsSuspended { get => _isSuspended; set => Set(ref _isSuspended, value); }
+
+    private bool _isLoading;
+    public bool IsLoading { get => _isLoading; set => Set(ref _isLoading, value); }
+
+    /// <summary>마지막 활성 시각(탭 절전 판정용)</summary>
+    public DateTime LastActivated { get; set; } = DateTime.UtcNow;
+
+    /// <summary>닫힌 시점의 인덱스(닫힌 탭 복원용). 열려 있는 동안은 무의미.</summary>
+    internal int ClosedIndex { get; set; } = -1;
+
+    // ---- 탭별 일시 상태(호스트 앱이 사용) ----
+    /// <summary>SourceChanged → 타이틀 확정 사이의 히스토리 기록 대기 URL.</summary>
+    public string? PendingHistoryUrl { get; set; }
+    /// <summary>소셜 카드 제목 갱신 대기 URL.</summary>
+    public string? PendingSocialUrl { get; set; }
+    /// <summary>탭별 페이지 내 검색 세션 (CoreWebView2 바인딩).</summary>
+    public FindSession? FindSession { get; set; }
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    private void Set<T>(ref T field, T value, [CallerMemberName] string? name = null)
+    {
+        if (EqualityComparer<T>.Default.Equals(field, value)) return;
+        field = value;
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+    }
+}
+
+/// <summary>세션 스냅샷(T1-10): 탭 URL 순서 + 활성 인덱스 + 핀 여부.</summary>
+public sealed record SessionSnapshot(List<string> Urls, int ActiveIndex, List<bool> Pinned);