src/constraints/targeted_constraint.cpp

#include "rive/constraints/targeted_constraint.hpp"
#include "rive/transform_component.hpp"
#include "rive/core_context.hpp"

using namespace rive;

bool TargetedConstraint::validate(CoreContext* context)
{
  if (!Super::validate(context))
  {
    return false;
  }
  auto coreObject = context->resolve(targetId());
  // If core object is not null and is not a TransformComponent it should
  // always be invalid
  if (coreObject != nullptr && !coreObject->is<TransformComponent>())
  {
    return false;
  }
  return !requiresTarget() || coreObject != nullptr;
}

StatusCode TargetedConstraint::onAddedDirty(CoreContext* context)
{
  StatusCode code = Super::onAddedDirty(context);
  if (code != StatusCode::Ok)
  {
    return code;
  }
  auto coreObject = context->resolve(targetId());
  if (requiresTarget() && coreObject == nullptr)
  {
    return StatusCode::MissingObject;
  }

#ifdef WITH_RIVE_EDITOR
  setTargetForEditor(static_cast<TransformComponent*>(coreObject));
#else
  m_Target = static_cast<TransformComponent*>(coreObject);
#endif

  return StatusCode::Ok;
}

void TargetedConstraint::buildDependencies()
{
  // Targeted constraints must have their constrained component (parent)
  // update after the target.
  if (auto* t = target())
  {
    t->addDependent(parent());
  }
}