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Add Activating event propagation to SuperView

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Co-authored-by: tig <585482+tig@users.noreply.github.com>
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copilot-swe-agent[bot]
2025-12-08 23:21:12 +00:00
parent e3a4331056
commit 6d82bee9ad
1 changed files with 21 additions and 2 deletions
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23
Terminal.Gui/ViewBase/View.Command.cs
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@@ -256,8 +256,16 @@ public partial class View // Command APIs
/// event. The default <see cref="Command.Activate"/> handler calls this method.
/// </summary>
/// <remarks>
/// The <see cref="Activating"/> event should be raised after the state of the View has been changed and before see
/// <see cref="Accepting"/>.
/// <para>
/// The <see cref="Activating"/> event should be raised after the state of the View has been changed and before see
/// <see cref="Accepting"/>.
/// </para>
/// <para>
/// If the event is not handled and the <see cref="SuperView"/> is not null, the event will be propagated
/// to the <see cref="SuperView"/>'s <see cref="RaiseActivating"/> method, allowing hierarchical components
/// (e.g. <see cref="MenuBar"/>) to handle activation events from subviews. Derived classes can override
/// <see cref="RaiseActivating"/> to implement custom propagation handling.
/// </para>
/// </remarks>
/// <returns>
/// <see langword="null"/> if no event was raised; input processing should continue.
@@ -280,6 +288,17 @@ public partial class View // Command APIs
// If the event is not canceled by the virtual method, raise the event to notify any external subscribers.
Activating?.Invoke (this, args);
// If the event was not handled and there's a SuperView, propagate the event up the hierarchy.
// This allows hierarchical components like MenuBar to handle activation events from subviews.
if (!args.Handled && SuperView is { })
{
bool? superResult = SuperView.RaiseActivating (ctx);
if (superResult is true)
{
return true;
}
}
return Activating is null ? null : args.Handled;
}