konva/src/Group.js

<p align="center"> <img src="https://raw.githubusercontent.com/konvajs/konvajs.github.io/master/apple-touch-icon-180x180.png" alt="Konva logo" height="180" /> </p>

(function() {
  'use strict';
  /**
     * Group constructor.  Groups are used to contain shapes or other groups.
     * @constructor
     * @memberof Konva
     * @augments Konva.Container
     * @param {Object} config
     * @@nodeParams
     * @@containerParams
     * @example
     * var group = new Konva.Group();
     */
  Konva.Group = function(config) {
    this.___init(config);
  };

  Konva.Util.addMethods(Konva.Group, {
    ___init: function(config) {
      this.nodeType = 'Group';
      // call super constructor
      Konva.Container.call(this, config);
    },
    _validateAdd: function(child) {
      var type = child.getType();
      if (type !== 'Group' && type !== 'Shape') {
        Konva.Util.throw('You may only add groups and shapes to groups.');
      }
    }
  });
  Konva.Util.extend(Konva.Group, Konva.Container);

  Konva.Collection.mapMethods(Konva.Group);
})();