DragAndDrop core
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FrigaT
368
Lattice.UI.Docking.WinUI/Controls/LatticeDockGroup.cs
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368
Lattice.UI.Docking.WinUI/Controls/LatticeDockGroup.cs
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using Lattice.Core.Docking.Abstractions;
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using Lattice.Core.Docking.Engine;
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using Lattice.Core.Docking.Models;
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using Lattice.UI.Docking.Abstractions;
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using Lattice.UI.Docking.Services;
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using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Controls;
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using System;
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using System.ComponentModel;
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using System.Runtime.CompilerServices;
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namespace Lattice.UI;
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/// <summary>
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/// Визуальный контрол для отображения группы разделения (сплиттера).
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/// Реализует интерфейс <see cref="IDockGroupControl"/> для интеграции с системой докинга.
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/// </summary>
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public sealed class LatticeDockGroup : Control, IDockGroupControl, IDisposable
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{
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private readonly PropertyChangedEventHandler _modelPropertyChangedHandler;
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private bool _disposed;
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private DockGroup? _model;
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private Grid? _rootGrid;
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private ContentControl? _firstChildControl;
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private ContentControl? _secondChildControl;
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private LayoutManager? _layoutManager;
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private DockDragDropService? _dragDropService;
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private IDockContextManager? _contextManager;
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private bool _isSelected;
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private bool _isActive;
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private bool _canDrag = true;
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private bool _canDrop = true;
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private double _splitRatio = 0.5;
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private double _splitterSize = 4.0;
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/// <summary>
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/// Инициализирует новый экземпляр класса <see cref="LatticeDockGroup"/>.
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/// </summary>
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public LatticeDockGroup()
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{
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this.DefaultStyleKey = typeof(LatticeDockGroup);
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_modelPropertyChangedHandler = OnModelPropertyChanged;
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this.DataContextChanged += OnDataContextChanged;
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}
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/// <inheritdoc/>
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public IDockElement? Model
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{
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get => _model;
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set
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{
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if (_model == value) return;
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DetachModel();
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_model = value as DockGroup;
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AttachModel();
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OnPropertyChanged(nameof(Model));
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}
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}
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/// <inheritdoc/>
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public LayoutManager? LayoutManager
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{
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get => _layoutManager;
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set
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{
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if (_layoutManager == value) return;
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_layoutManager = value;
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OnPropertyChanged(nameof(LayoutManager));
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}
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}
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/// <inheritdoc/>
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public IDockDragDropService? DragDropService
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{
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get => _dragDropService;
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set
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{
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if (_dragDropService == value) return;
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_dragDropService = value;
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OnPropertyChanged(nameof(DragDropService));
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}
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}
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/// <inheritdoc/>
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public IDockContextManager? ContextManager
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{
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get => _contextManager;
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set
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{
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if (_contextManager == value) return;
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_contextManager = value;
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OnPropertyChanged(nameof(ContextManager));
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}
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}
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/// <inheritdoc/>
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public bool IsSelected
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{
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get => _isSelected;
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set
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{
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if (_isSelected == value) return;
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_isSelected = value;
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OnPropertyChanged(nameof(IsSelected));
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}
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}
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/// <inheritdoc/>
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public bool IsActive
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{
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get => _isActive;
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set
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{
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if (_isActive == value) return;
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_isActive = value;
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OnPropertyChanged(nameof(IsActive));
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}
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}
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/// <inheritdoc/>
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public bool CanDrag
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{
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get => _canDrag;
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set
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{
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if (_canDrag == value) return;
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_canDrag = value;
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OnPropertyChanged(nameof(CanDrag));
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}
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}
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/// <inheritdoc/>
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public bool CanDrop
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{
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get => _canDrop;
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set
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{
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if (_canDrop == value) return;
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_canDrop = value;
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OnPropertyChanged(nameof(CanDrop));
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}
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}
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/// <inheritdoc/>
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public SplitDirection Orientation
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{
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get => _model?.Orientation ?? SplitDirection.Horizontal;
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set
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{
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if (_model != null && _model.Orientation != value)
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{
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_model.Orientation = value;
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UpdateLayoutDefinitions();
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}
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}
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}
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/// <inheritdoc/>
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public double SplitRatio
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{
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get => _splitRatio;
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set
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{
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if (Math.Abs(_splitRatio - value) > 0.001)
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{
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_splitRatio = value;
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UpdateLayoutDefinitions();
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OnPropertyChanged(nameof(SplitRatio));
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SplitRatioChanged?.Invoke(this,
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new SplitRatioChangedEventArgs(value, SplitRatioChangeSource.Programmatic));
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}
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}
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}
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/// <inheritdoc/>
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public double SplitterSize
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{
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get => _splitterSize;
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set
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{
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if (Math.Abs(_splitterSize - value) > 0.001)
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{
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_splitterSize = value;
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OnPropertyChanged(nameof(SplitterSize));
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}
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}
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}
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/// <inheritdoc/>
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public IDockControl? FirstChild => _firstChildControl?.Content as IDockControl;
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/// <inheritdoc/>
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public IDockControl? SecondChild => _secondChildControl?.Content as IDockControl;
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/// <inheritdoc/>
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public event EventHandler<SplitRatioChangedEventArgs>? SplitRatioChanged;
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/// <inheritdoc/>
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public event PropertyChangedEventHandler? PropertyChanged;
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/// <inheritdoc/>
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protected override void OnApplyTemplate()
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{
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base.OnApplyTemplate();
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_rootGrid = GetTemplateChild("PART_Grid") as Grid;
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_firstChildControl = GetTemplateChild("PART_First") as ContentControl;
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_secondChildControl = GetTemplateChild("PART_Second") as ContentControl;
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UpdateLayoutDefinitions();
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}
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private void OnDataContextChanged(FrameworkElement sender, DataContextChangedEventArgs args)
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{
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Model = args.NewValue as DockGroup;
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}
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private void AttachModel()
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{
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if (_model != null)
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{
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_model.PropertyChanged += _modelPropertyChangedHandler;
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this.DataContext = _model;
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// Инициализируем свойства из модели
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_splitRatio = _model.SplitRatio;
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UpdateLayoutDefinitions();
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}
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}
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private void DetachModel()
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{
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if (_model != null)
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{
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_model.PropertyChanged -= _modelPropertyChangedHandler;
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this.DataContext = null;
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}
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}
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private void OnModelPropertyChanged(object? sender, PropertyChangedEventArgs e)
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{
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switch (e.PropertyName)
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{
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case nameof(DockGroup.Orientation):
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OnPropertyChanged(nameof(Orientation));
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UpdateLayoutDefinitions();
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break;
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case nameof(DockGroup.SplitRatio):
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if (_model != null)
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{
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_splitRatio = _model.SplitRatio;
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OnPropertyChanged(nameof(SplitRatio));
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UpdateLayoutDefinitions();
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}
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break;
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}
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}
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private void UpdateLayoutDefinitions()
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{
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if (_rootGrid == null || _model == null) return;
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_rootGrid.ColumnDefinitions.Clear();
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_rootGrid.RowDefinitions.Clear();
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if (_model.Orientation == SplitDirection.Horizontal)
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{
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// Горизонтальное разделение
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_rootGrid.ColumnDefinitions.Add(new ColumnDefinition
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{ Width = new GridLength(_model.SplitRatio, GridUnitType.Star) });
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_rootGrid.ColumnDefinitions.Add(new ColumnDefinition
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{ Width = GridLength.Auto });
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_rootGrid.ColumnDefinitions.Add(new ColumnDefinition
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{ Width = new GridLength(1 - _model.SplitRatio, GridUnitType.Star) });
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// Устанавливаем позиции элементов
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if (_firstChildControl != null)
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{
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Grid.SetColumn(_firstChildControl, 0);
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Grid.SetRow(_firstChildControl, 0);
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}
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if (_secondChildControl != null)
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{
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Grid.SetColumn(_secondChildControl, 2);
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Grid.SetRow(_secondChildControl, 0);
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}
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}
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else
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{
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// Вертикальное разделение
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_rootGrid.RowDefinitions.Add(new RowDefinition
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{ Height = new GridLength(_model.SplitRatio, GridUnitType.Star) });
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_rootGrid.RowDefinitions.Add(new RowDefinition
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{ Height = GridLength.Auto });
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_rootGrid.RowDefinitions.Add(new RowDefinition
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{ Height = new GridLength(1 - _model.SplitRatio, GridUnitType.Star) });
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// Устанавливаем позиции элементов
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if (_firstChildControl != null)
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{
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Grid.SetRow(_firstChildControl, 0);
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Grid.SetColumn(_firstChildControl, 0);
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}
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if (_secondChildControl != null)
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{
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Grid.SetRow(_secondChildControl, 2);
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Grid.SetColumn(_secondChildControl, 0);
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}
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}
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}
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/// <inheritdoc/>
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public void SetChildren(IDockControl? firstChild, IDockControl? secondChild)
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{
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if (_firstChildControl != null)
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_firstChildControl.Content = firstChild;
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if (_secondChildControl != null)
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_secondChildControl.Content = secondChild;
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UpdateLayoutDefinitions();
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}
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/// <inheritdoc/>
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public void Refresh()
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{
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UpdateLayoutDefinitions();
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}
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/// <inheritdoc/>
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public void ApplyTheme(IDockTheme theme)
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{
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// Применение темы к контролу
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if (theme != null)
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{
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// TODO: Реализовать применение темы к стилям контрола
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}
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}
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/// <inheritdoc/>
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public void OnModelPropertyChanged(string propertyName)
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{
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if (_model != null)
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{
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OnModelPropertyChanged(_model, new PropertyChangedEventArgs(propertyName));
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}
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}
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private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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/// <inheritdoc/>
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public void Dispose()
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{
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if (!_disposed)
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{
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DetachModel();
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_disposed = true;
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GC.SuppressFinalize(this);
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}
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}
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}
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