static BOOL shouldBlockAnimations()

in ComponentKit/Core/CKMountAnimationGuard.h [33:64]

• 23 lines of code
• 8 McCabe index (conditional complexity)

  static BOOL shouldBlockAnimations(id<CKMountable> oldComponent, id<CKMountable> newComponent,
                                    const CK::Component::MountContext &ctx,
                                    const CKComponentViewConfiguration &viewConfig) noexcept
  {
    if ([CATransaction disableActions]) {
      return NO; // Already blocked
    }
    // If the context explicitly tells us to block animations, do it.
    if (ctx.shouldBlockAnimations) {
      return YES;
    }

    if (viewConfig.blockImplicitAnimations()) {
      return YES;
    }

    // If we're configuring an entirely new view, or one where the old component has already unmounted,
    // block animation to prevent animating from an undefined previous state.
    if (oldComponent == nil) {
      return YES;
    }

    // If we do have scope frame tokens for both the old and new components, but they don't match, block animation.
    id oldUniqueIdentifier = [oldComponent uniqueIdentifier];
    id newUniqueIdentifier = [newComponent uniqueIdentifier];
    if (oldUniqueIdentifier && newUniqueIdentifier && ![oldUniqueIdentifier isEqual:newUniqueIdentifier]) {
      return YES;
    }

    // Otherwise, assume we can animate!
    return NO;
  }