AppExperiments

using Leap.Unity.Attributes;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace Leap.Unity.UI {

  [ExecuteInEditMode]
  public class PaletteSwitcherController : MonoBehaviour {

    public Transform findPaletteControllersWithin;

    public ColorPalette[] palettes;

    [SerializeField, OnEditorChange("curPaletteIdx")]
    private int _curPaletteIdx = 0;
    public int curPaletteIdx {
      get { return _curPaletteIdx; }
      set {
        value = Mathf.Clamp(value, 0, palettes.Length - 1);
        _curPaletteIdx = value;
        setPalettes();
      }
    }

    public ColorPalette curPalette {
      get { return palettes[curPaletteIdx]; }
    }

    private List<GraphicPaletteController> _paletteControllers = new List<GraphicPaletteController>();
    void Reset() {
      if (findPaletteControllersWithin == null) {
        findPaletteControllersWithin = this.transform;
      }
    }

    void OnValidate() {
      if (findPaletteControllersWithin != null) {
        _paletteControllers.Clear();
        findPaletteControllersWithin.GetComponentsInChildren(true, _paletteControllers);
      }
    }

    void OnEnable() {
      if (!Application.isPlaying) return;

      _paletteControllers.Clear();
      findPaletteControllersWithin.GetComponentsInChildren(true, _paletteControllers);
    }

    private void setPalettes() {
      if (palettes.Length == 0) return;

      foreach (var paletteController in _paletteControllers) {
        paletteController.palette = curPalette;
      }
    }

  }

}