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make window drag helper public. #1069

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Merged
wieslawsoltes merged 1 commit into from
Mar 9, 2026
Merged

make window drag helper public. #1069

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17 changes: 15 additions & 2 deletions src/Dock.Avalonia/Internal/WindowDragHelper.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ namespace Dock.Avalonia.Internal;
/// <summary>
/// Helper that enables starting window drag operations from custom controls.
/// </summary>
internal class WindowDragHelper
public class WindowDragHelper
{
private readonly Control _owner;
private readonly Func<bool> _isEnabled;
Expand All @@ -33,6 +33,9 @@ internal class WindowDragHelper
private IDisposable[]? _disposables;
private IDisposable? _releasedEventDisposable;

/// <summary>
/// Initializes a helper that starts tracked window move drags from a custom control.
/// </summary>
public WindowDragHelper(
Control owner,
Func<bool> isEnabled,
Expand All @@ -47,6 +50,9 @@ public WindowDragHelper(
_getDockScope = getDockScope ?? (_ => WindowDragDockScope.FullWindow);
}

/// <summary>
/// Attaches pointer handlers to the owner control.
/// </summary>
public void Attach()
{
Detach();
Expand All @@ -58,6 +64,9 @@ public void Attach()
];
}

/// <summary>
/// Detaches pointer handlers and clears any in-progress drag state.
/// </summary>
public void Detach()
{
if (_disposables != null)
Expand Down Expand Up @@ -262,7 +271,11 @@ private IDisposable SubscribeToPointerReleased(Window window)
return window.AddDisposableHandler(InputElement.PointerReleasedEvent, OnPointerReleased, RoutingStrategies.Tunnel);
}

internal static bool IsChildOfType<T>(Control owner, Control control) where T : Control
/// <summary>
/// Determines whether <paramref name="control"/> has an ancestor of type <typeparamref name="T"/>
/// before reaching <paramref name="owner"/>.
/// </summary>
public static bool IsChildOfType<T>(Control owner, Control control) where T : Control
{
var parent = control;
while (parent != null && parent != owner)
Expand Down
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