function SVGRenderer(animationItem, config) {
  this.animationItem = animationItem;
  this.layers = null;
  this.renderedFrame = -1;
  this.svgElement = createNS('svg');
  var ariaLabel = '';
  if (config && config.title) {
    var titleElement = createNS('title');
    var titleId = createElementID();
    titleElement.setAttribute('id', titleId);
    titleElement.textContent = config.title;
    this.svgElement.appendChild(titleElement);
    ariaLabel += titleId;
  }
  if (config && config.description) {
    var descElement = createNS('desc');
    var descId = createElementID();
    descElement.setAttribute('id', descId);
    descElement.textContent = config.description;
    this.svgElement.appendChild(descElement);
    ariaLabel += ' ' + descId;
  }
  if (ariaLabel) {
    this.svgElement.setAttribute('aria-labelledby', ariaLabel)
  }
  var defs = createNS('defs');
  this.svgElement.appendChild(defs);
  var maskElement = createNS('g');
  this.svgElement.appendChild(maskElement);
  this.layerElement = maskElement;
  this.renderConfig = {
    preserveAspectRatio: (config && config.preserveAspectRatio) || 'xMidYMid meet',
    imagePreserveAspectRatio: (config && config.imagePreserveAspectRatio) || 'xMidYMid slice',
    progressiveLoad: (config && config.progressiveLoad) || false,
    hideOnTransparent: (config && config.hideOnTransparent === false) ? false : true,
    viewBoxOnly: (config && config.viewBoxOnly) || false,
    viewBoxSize: (config && config.viewBoxSize) || false,
    className: (config && config.className) || '',
    id: (config && config.id) || '',
    focusable: config && config.focusable,
    filterSize: {
      width: config && config.filterSize && config.filterSize.width || '100%',
      height: config && config.filterSize && config.filterSize.height || '100%',
      x: config && config.filterSize && config.filterSize.x || '0%',
      y: config && config.filterSize && config.filterSize.y || '0%',
    }
  };

  this.globalData = {
    _mdf: false,
    frameNum: -1,
    defs: defs,
    renderConfig: this.renderConfig
  };
  this.elements = [];
  this.pendingElements = [];
  this.destroyed = false;
  this.rendererType = 'svg';

}

extendPrototype([BaseRenderer], SVGRenderer);

SVGRenderer.prototype.createNull = function (data) {
  return new NullElement(data, this.globalData, this);
};

SVGRenderer.prototype.createShape = function (data) {
  return new SVGShapeElement(data, this.globalData, this);
};

SVGRenderer.prototype.createText = function (data) {
  return new SVGTextElement(data, this.globalData, this);

};

SVGRenderer.prototype.createImage = function (data) {
  return new IImageElement(data, this.globalData, this);
};

SVGRenderer.prototype.createComp = function (data) {
  return new SVGCompElement(data, this.globalData, this);

};

SVGRenderer.prototype.createSolid = function (data) {
  return new ISolidElement(data, this.globalData, this);
};

SVGRenderer.prototype.configAnimation = function (animData) {
  this.svgElement.setAttribute('xmlns', 'http://www.w3.org/2000/svg');
  if(this.renderConfig.viewBoxSize) {
    this.svgElement.setAttribute('viewBox', this.renderConfig.viewBoxSize);
  } else {
    this.svgElement.setAttribute('viewBox', '0 0 ' + animData.w + ' ' + animData.h);
  }

  if(!this.renderConfig.viewBoxOnly) {
    this.svgElement.setAttribute('width', animData.w);
    this.svgElement.setAttribute('height', animData.h);
    this.svgElement.style.width = '100%';
    this.svgElement.style.height = '100%';
    this.svgElement.style.transform = 'translate3d(0,0,0)';
  }
  if (this.renderConfig.className) {
    this.svgElement.setAttribute('class', this.renderConfig.className);
  }
  if (this.renderConfig.id) {
    this.svgElement.setAttribute('id', this.renderConfig.id);
  }
  if (this.renderConfig.focusable !== undefined) {
    this.svgElement.setAttribute('focusable', this.renderConfig.focusable);
  }
  this.svgElement.setAttribute('preserveAspectRatio', this.renderConfig.preserveAspectRatio);
  // this.layerElement.style.transform = 'translate3d(0,0,0)';
  // this.layerElement.style.transformOrigin = this.layerElement.style.mozTransformOrigin = this.layerElement.style.webkitTransformOrigin = this.layerElement.style['-webkit-transform'] = "0px 0px 0px";
  this.animationItem.wrapper.appendChild(this.svgElement);
  // Mask animation
  var defs = this.globalData.defs;

  this.setupGlobalData(animData, defs);
  this.globalData.progressiveLoad = this.renderConfig.progressiveLoad;
  this.data = animData;

  var maskElement = createNS('clipPath');
  var rect = createNS('rect');
  rect.setAttribute('width', animData.w);
  rect.setAttribute('height', animData.h);
  rect.setAttribute('x', 0);
  rect.setAttribute('y', 0);
  var maskId = createElementID();
  maskElement.setAttribute('id', maskId);
  maskElement.appendChild(rect);
  this.layerElement.setAttribute('clip-path', 'url(' + locationHref + '#' + maskId + ')');

  defs.appendChild(maskElement);
  this.layers = animData.layers;
  this.elements = createSizedArray(animData.layers.length);
};


SVGRenderer.prototype.destroy = function () {
  if (this.animationItem.wrapper) {
    this.animationItem.wrapper.innerText = '';
  }
  this.layerElement = null;
  this.globalData.defs = null;
  var i, len = this.layers ? this.layers.length : 0;
  for (i = 0; i < len; i++) {
    if(this.elements[i]) {
      this.elements[i].destroy();
    }
  }
  this.elements.length = 0;
  this.destroyed = true;
  this.animationItem = null;
};

SVGRenderer.prototype.updateContainerSize = function () {
};

SVGRenderer.prototype.buildItem  = function (pos) {
  var elements = this.elements;
  if(elements[pos] || this.layers[pos].ty == 99) {
    return;
  }
  elements[pos] = true;
  var element = this.createItem(this.layers[pos]);

  elements[pos] = element;
  if(expressionsPlugin) {
    if(this.layers[pos].ty === 0) {
      this.globalData.projectInterface.registerComposition(element);
    }
    element.initExpressions();
  }
  this.appendElementInPos(element, pos);
  if(this.layers[pos].tt) {
    if(!this.elements[pos - 1] || this.elements[pos - 1] === true) {
      this.buildItem(pos - 1);
      this.addPendingElement(element);
    } else {
      element.setMatte(elements[pos - 1].layerId);
    }
  }
};

SVGRenderer.prototype.checkPendingElements  = function () {
  while(this.pendingElements.length) {
    var element = this.pendingElements.pop();
    element.checkParenting();
    if(element.data.tt) {
      var i = 0, len = this.elements.length;
      while(i < len) {
        if(this.elements[i] === element) {
          element.setMatte(this.elements[i - 1].layerId);
          break;
        }
        i += 1;
      }
    }
  }
};

SVGRenderer.prototype.renderFrame = function (num) {
  if(this.renderedFrame === num || this.destroyed) {
    return;
  }
  if(num === null) {
    num = this.renderedFrame;
  }else{
    this.renderedFrame = num;
  }
  // console.log('-------');
  // console.log('FRAME ',num);
  this.globalData.frameNum = num;
  this.globalData.frameId += 1;
  this.globalData.projectInterface.currentFrame = num;
  this.globalData._mdf = false;
  var i, len = this.layers.length;
  if(!this.completeLayers) {
    this.checkLayers(num);
  }
  for (i = len - 1; i >= 0; i--) {
    if(this.completeLayers || this.elements[i]) {
      this.elements[i].prepareFrame(num - this.layers[i].st);
    }
  }
  if(this.globalData._mdf) {
    for (i = 0; i < len; i += 1) {
      if(this.completeLayers || this.elements[i]) {
        this.elements[i].renderFrame();
      }
    }
  }
};

SVGRenderer.prototype.appendElementInPos = function (element, pos) {
  var newElement = element.getBaseElement();
  if(!newElement) {
    return;
  }
  var i = 0;
  var nextElement;
  while(i < pos) {
    if(this.elements[i] && this.elements[i] !== true && this.elements[i].getBaseElement()) {
      nextElement = this.elements[i].getBaseElement();
    }
    i += 1;
  }
  if(nextElement) {
    this.layerElement.insertBefore(newElement, nextElement);
  } else {
    this.layerElement.appendChild(newElement);
  }
};

SVGRenderer.prototype.hide = function () {
  this.layerElement.style.display = 'none';
};

SVGRenderer.prototype.show = function () {
  this.layerElement.style.display = 'block';
};