#if HAVE_SLATE

using System;

using UnityEngine;

using Slate;
using Slate.ActionClips;

using Framework.Support;

namespace Framework.Cinematics {

  /// <summary>Toggles a GameObject's renderers on or off</summary>
  [Category("Material")]
  [Description("Toggle the renderers on a GameObject on or off")]
  public class ToggleRendererAction : ActorActionClip {

    /// <summary>State to which the renderers will be toggled</summary>
    public bool State = true;

    /// <summary>Summary of what this action does</summary>
    public override string info {
      get {
        if(this.State) {
          return "<color=#7fFF7f>Show</color>";
        } else {
          return "<color=#FF7f7f>Hide</color>";
        }
      }
    }

    /// <summary>Called before the event is played back for the first time</summary>
    protected override void OnEnter() {
      this.renderers = actor.GetComponentsInChildren<Renderer>();
      if(this.renderers != null) {
        int rendererCount = this.renderers.Length;

        this.previousStates = new bool[rendererCount];

        for(int index = 0; index < rendererCount; ++index) {
          this.previousStates[index] = this.renderers[index].enabled;
          this.renderers[index].enabled = this.State;
        }
      } else {
        this.previousStates = null;
      }
    }

    /// <summary>Called when the action's effects should be reversed</summary>
    /// <remarks>
    ///   Called either after the event has been scrubbed/played in reverse
    ///   or when the stop button is hit after the event was played.
    /// </remarks>
    protected override void OnReverse() {
      if(this.renderers != null) {
        int rendererCount = this.renderers.Length;
        for(int index = 0; index < rendererCount; ++index) {
          this.renderers[index].enabled = this.previousStates[index];
        }

        this.renderers = null;
      }
    }

    /// <summary>All renderers that were toggled</summary>
    private Renderer[] renderers;
    /// <summary>State of the renderers before the action ran</summary>
    private bool[] previousStates;

  }

} // namespace Framework.Cinematics

#endif // HAVE_SLATE