composition.js

/**
 * @license MIT http://troopjs.mit-license.org/
 */
define([ "troopjs-compose/factory" ], function (Factory) {
  "use strict";

  var INSTANCE_COUNTER = 0;
  var INSTANCE_COUNT = "instanceCount";

  /**
   * Base composition with instance count.
   * @class core.composition
   * @implement compose.composition
   */

  /**
   * Instance counter
   * @private
   * @readonly
   * @property {Number} instanceCount
   */

  /**
   * @method create
   * @static
   * @inheritable
   * @inheritdoc
   * @return {Object} Instance of this class
   */

  /**
   * @method extend
   * @static
   * @inheritable
   * @inheritdoc
   * @return {core.composition} The extended subclass
   */

  /**
   * Creates a new component instance
   * @method constructor
   */
  return Factory(function () {
    this[INSTANCE_COUNT] = ++INSTANCE_COUNTER;
  }, {
    /**
     * The hierarchical namespace for this component that indicates it's functionality.
     * @protected
     * @readonly
     * @property {String}
     */
    "displayName": "core/composition",

    /**
     * Gives string representation of this component instance.
     * @return {String} {@link #displayName}`@`{@link #instanceCount}
     * @protected
     */
    "toString": function () {
      var me = this;

      return me.displayName + "@" + me[INSTANCE_COUNT];
    }
  });
});