112 lines
3.7 KiB
C#
112 lines
3.7 KiB
C#
using CommunityToolkit.Mvvm.ComponentModel;
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using FluidExplorer.Navigation;
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using FluidExplorer.Services;
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using FluidExplorer.Services.FileSystem;
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using FluidExplorer.Services.ItemVisuals;
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using FluidExplorer.Services.Operations;
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using FluidExplorer.Services.Search;
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using Microsoft.UI.Dispatching;
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using PathHelper = FluidExplorer.Services.FileSystem.PathHelper;
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namespace FluidExplorer.ViewModels;
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/// <summary>一个标签页：包含主窗格，可选第二窗格（双窗格模式，搬文件不用来回切）。</summary>
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public sealed partial class ExplorerTabViewModel : ObservableObject
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{
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private readonly IFileSystemService _fs;
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private readonly SearchService _search;
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private readonly IFileOperationService _operations;
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private readonly ItemVisualService _visuals;
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private readonly IFileClipboard _clipboard;
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private readonly AppSettings _settings;
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private readonly DispatcherQueue _ui;
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[ObservableProperty] private bool _isDualPane;
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[ObservableProperty] private bool _isActivePaneSecondary;
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[ObservableProperty] private string _header = "新标签页";
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[ObservableProperty] private string _glyph = "\uE8B7";
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public ExplorerTabViewModel(
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IFileSystemService fs,
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SearchService search,
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IFileOperationService operations,
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ItemVisualService visuals,
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IFileClipboard clipboard,
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AppSettings settings,
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DispatcherQueue ui,
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NavigationLocation start)
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{
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_fs = fs;
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_search = search;
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_operations = operations;
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_visuals = visuals;
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_clipboard = clipboard;
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_settings = settings;
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_ui = ui;
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Primary = new ExplorerPaneViewModel(fs, search, operations, visuals, clipboard, settings, ui);
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Primary.PropertyChanged += (_, e) =>
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{
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if (e.PropertyName == nameof(ExplorerPaneViewModel.Title)) UpdateHeader();
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};
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Primary.SettingsChanged += (_, _) => UpdateHeader();
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_ = Primary.NavigateAsync(start);
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UpdateHeader();
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}
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public ExplorerPaneViewModel Primary { get; }
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[ObservableProperty] private ExplorerPaneViewModel? _secondary;
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public ExplorerPaneViewModel ActivePane => IsDualPane && IsActivePaneSecondary && Secondary is not null ? Secondary : Primary;
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public ExplorerPaneViewModel EnsureSecondary()
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{
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if (Secondary is not null) return Secondary;
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var pane = new ExplorerPaneViewModel(_fs, _search, _operations, _visuals, _clipboard, _settings, _ui)
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{
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ShowSidebar = false
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};
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pane.PropertyChanged += (_, e) =>
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{
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if (e.PropertyName == nameof(ExplorerPaneViewModel.Title)) UpdateHeader();
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};
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Secondary = pane;
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return pane;
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}
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public void ToggleDualPane()
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{
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if (IsDualPane)
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{
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IsDualPane = false;
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IsActivePaneSecondary = false;
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return;
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}
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var secondary = EnsureSecondary();
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if (string.IsNullOrEmpty(secondary.CurrentPath) || secondary.CurrentPath.StartsWith("::", StringComparison.Ordinal))
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{
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// 第二个窗格默认停在与主窗格同级的目录，便于对拖
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var parent = PathHelper.GetParent(Primary.CurrentPath);
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_ = secondary.NavigateAsync(NavigationLocation.FromPath(
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Directory.Exists(parent) ? parent : Primary.CurrentPath));
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}
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IsDualPane = true;
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}
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private void UpdateHeader()
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{
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Header = Primary.IsSearchActive && !string.IsNullOrWhiteSpace(Primary.SearchText)
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? $"搜索：{Primary.SearchText}"
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: Primary.Title;
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Glyph = Primary.Glyph;
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}
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public void Dispose()
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{
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Primary.Dispose();
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Secondary?.Dispose();
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}
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}
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