//
//  NodePropertyMap.swift
//  lottie-swift
//
//  Created by Brandon Withrow on 1/21/19.
//

import Foundation
import QuartzCore

protocol NodePropertyMap {
  var properties: [AnyNodeProperty] { get }
}

extension NodePropertyMap {
  
  var childKeypaths: [KeypathSearchable] {
    return []
  }
  
  var keypathLayer: CALayer? {
    return nil
  }
  
  /// Checks if the node's local contents need to be rebuilt.
  func needsLocalUpdate(frame: CGFloat) -> Bool {
    for property in properties {
      if property.needsUpdate(frame: frame) {
        return true
      }
    }
    return false
  }
  
  /// Rebuilds only the local nodes that have an update for the frame
  func updateNodeProperties(frame: CGFloat) {
    properties.forEach { (property) in
      property.update(frame: frame)
    }
  }
  
}