Use bubble routing for inline edit double taps

[wieslawsoltes]

Summary

• subscribe InlineEditBehavior to DoubleTappedEvent with bubble routing
• restore double-tap activation for both the configured display control and associated object
• add headless regression coverage for both activation paths
• document that nested display content participates through routed bubbling

Problem

InlineEditBehavior registered its two double-tap handlers with RoutingStrategies.Tunnel. Avalonia's InputElement.DoubleTappedEvent is bubble-routed, so those handlers were never reached. As a result, the sample EditableItem and consumer controls no longer entered edit mode on a double tap after ShowOnDoubleTappedBehavior was replaced.

Root cause

The predecessor behavior and the library's typed DoubleTappedEventTrigger use the routed event's bubble strategy. InlineEditBehavior introduced a strategy mismatch by explicitly requesting the unsupported tunnel route for this event.

Changes

• change the display-control handler from RoutingStrategies.Tunnel to RoutingStrategies.Bubble
• change the associated-object handler from RoutingStrategies.Tunnel to RoutingStrategies.Bubble
• retain the existing key, focus, visibility, and detach behavior unchanged
• document nested-content activation semantics

Tests

Added headless tests proving that:

• double-tapping the configured DisplayControl hides it and shows the edit control
• double-tapping content inside the associated object does the same when EditOnAssociatedObjectDoubleTapped is enabled

Both tests fail against the previous tunnel-only implementation and pass with this change.

Validation

• dotnet test tests/Xaml.Behaviors.Interactions.UnitTests/Xaml.Behaviors.Interactions.UnitTests.csproj --filter 'FullyQualifiedName~InlineEditBehaviorTests' --no-restore
  • 2 passed, 0 failed
• dotnet test tests/Xaml.Behaviors.Interactions.UnitTests/Xaml.Behaviors.Interactions.UnitTests.csproj --no-restore
  • 91 passed, 0 failed, 2 pre-existing skipped drag tests
• git diff --check

Closes #324

[chatgpt-codex-connector]

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