namespace AcDream.App.UI;

/// <summary>Panel state that is not completely described by outer-frame bounds.</summary>
public readonly record struct RetainedWindowState(
    bool Collapsed = false,
    bool Maximized = false,
    float? PersistedTop = null,
    float? PersistedHeight = null);

/// <summary>
/// Optional state seam used by retained-window persistence. Bounds are restored
/// first; the controller then reapplies collapsed/maximized presentation.
/// </summary>
public interface IRetainedWindowStateController
{
    RetainedWindowState CaptureWindowState();
    void RestoreWindowState(RetainedWindowState state);
}