private void NotifyParentTouchesManagersManipulationStarting(GestureRecognizer.Manipulation manip)
{
if (!_isManipulating && (_parentsTouchesManager?.Any() ?? false))
{
foreach (var manager in _parentsTouchesManager)
{
_isManipulating |= manager.ManipulationStarting(manip);
}
}
}
/// <summary>
/// Indicates that a child listener is starting to track a manipulation
/// (so the owner should try to not cancel the touches propagation for interactions that are supported by the given manipulation object)
/// </summary>
/// <remarks>If this method returns true, the caller MUST also call <see cref="ManipulationEnded"/> once completed (or cancelled).</remarks>
public bool ManipulationStarting(GestureRecognizer.Manipulation manipulation)
{
if (CanConflict(manipulation))
{
ManipulationStarted();
return(true);
}
else
{
return(false);
}
}
/// <inheritdoc /> protected override bool CanConflict(GestureRecognizer.Manipulation manipulation) => _scrollPresenter.CanHorizontallyScroll && manipulation.IsTranslateXEnabled || _scrollPresenter.CanVerticallyScroll && manipulation.IsTranslateYEnabled || manipulation.IsDragManipulation; // This will actually always be false when CanConflict is being invoked in current setup.
/// <inheritdoc /> protected override bool CanConflict(GestureRecognizer.Manipulation manipulation) => manipulation.IsTranslateXEnabled || manipulation.IsTranslateYEnabled || manipulation.IsDragManipulation; // This will actually always be false when CanConflict is being invoked in current setup.
protected abstract bool CanConflict(GestureRecognizer.Manipulation manipulation);
