AppExperiments

using Leap.Unity;
using Leap.Unity.Animation;
using Leap.Unity.GraphicalRenderer;
using Leap.Unity.Interaction;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace Leap.Unity.UI {
  
  public class GraphicButtonPaletteController : GraphicPaletteController {

    [Header("Button")]

    public InteractionButton button;

    public int primaryHoverColorIdx;
    public int pressedColorIdx;
    public int controlDisabledColorIdx;

    private Pulsator _pressPulsator;

    public Color primaryHoveredColor { get { return palette[primaryHoverColorIdx]; } }
    public Color pressedColor { get { return palette[pressedColorIdx]; } }
    public Color controlDisabledColor { get { return palette[controlDisabledColorIdx]; } }

    protected override void Reset() {
      base.Reset();

      button = GetComponent<InteractionButton>();
    }

    protected override void OnValidate() {
      base.OnValidate();

      if (palette != null) {
        if (palette.colors.Length != 0) {
          validateColorIdx(ref primaryHoverColorIdx);
          validateColorIdx(ref pressedColorIdx);
        }
      }
    }

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

      button.OnPress   += onPress;
      button.OnUnpress += onUnpress;
    }

    protected virtual void OnDisable() {
      if (!Application.isPlaying) return;

      button.OnPress   -= onPress;
      button.OnUnpress -= onUnpress;
    }

    private void onPress() { _pressPulsator.Pulse(); }
    private void onUnpress() { _pressPulsator.Relax(); }

    protected override void Start() {
      base.Start();

      if (Application.isPlaying) _pressPulsator = Pulsator.Spawn().SetValues(0F, 1F, 0.8F).SetSpeed(20F);
    }
    
    protected virtual void OnDestroy() {
      if (_pressPulsator != null) {
        Pulsator.Recycle(_pressPulsator);
      }
    }

    protected override Color updateTargetColor() {
      var targetColor = restingColor;
      
      if (!button.controlEnabled) {
        targetColor = controlDisabledColor;
      }
      else if (!_pressPulsator.isResting) {
        if (_pressPulsator.value < 1.0F) {
          targetColor = Color.Lerp(restingColor, pressedColor, _pressPulsator.value);
        }
        else {
          targetColor = Color.Lerp(pressedColor, restingColor, _pressPulsator.value - 1F);
        }
      }
      else if (button.isPrimaryHovered) {
        targetColor = primaryHoveredColor;
      }

      return targetColor;
    }

  }

}