player/js/elements/BaseElement.js

function BaseElement() {
}

BaseElement.prototype = {
  checkMasks: function () {
    if (!this.data.hasMask) {
      return false;
    }
    var i = 0, len = this.data.masksProperties.length;
    while (i < len) {
      if ((this.data.masksProperties[i].mode !== 'n' && this.data.masksProperties[i].cl !== false)) {
        return true;
      }
      i += 1;
    }
    return false;
  },
  initExpressions: function () {
    this.layerInterface = LayerExpressionInterface(this);
    if (this.data.hasMask && this.maskManager) {
      this.layerInterface.registerMaskInterface(this.maskManager);
    }
    var effectsInterface = EffectsExpressionInterface.createEffectsInterface(this, this.layerInterface);
    this.layerInterface.registerEffectsInterface(effectsInterface);

    if (this.data.ty === 0 || this.data.xt) {
      this.compInterface = CompExpressionInterface(this);
    } else if (this.data.ty === 4) {
      this.layerInterface.shapeInterface = ShapeExpressionInterface(this.shapesData, this.itemsData, this.layerInterface);
      this.layerInterface.content = this.layerInterface.shapeInterface;
    } else if (this.data.ty === 5) {
      this.layerInterface.textInterface = TextExpressionInterface(this);
      this.layerInterface.text = this.layerInterface.textInterface;
    }
  },
  setBlendMode: function () {
    var blendModeValue = getBlendMode(this.data.bm);
    var elem = this.baseElement || this.layerElement;

    elem.style['mix-blend-mode'] = blendModeValue;
  },
  initBaseData: function (data, globalData, comp) {
    this.globalData = globalData;
    this.comp = comp;
    this.data = data;
    this.layerId = createElementID();

    // Stretch factor for old animations missing this property.
    if (!this.data.sr) {
      this.data.sr = 1;
    }
    // effects manager
    this.effectsManager = new EffectsManager(this.data, this, this.dynamicProperties);

  },
  getType: function () {
    return this.type;
  }
  , sourceRectAtTime: function () {},
};