'use strict';

const Cu = Components.utils;

(function(exports) {

if ('MozReflowAtom' in exports) {

return;

}

exports.MozReflowAtom = {

count: null,

_trackingManifest: null,

init: function rw_init() {

exports.addEventListener('developer-hud-update', this);

},

handleEvent: function rw_handleEvent(evt) {

var metric = evt.detail.metric.name || evt.detail.metric;

if (metric !== 'reflows' ||

evt.detail.manifest !== this._trackingManifest) {

return;

}

this.count++;

},

startTracking: function(manifestURL) {

this._trackingManifest = manifestURL;

this.count = 0;

},

stopTracking: function() {

this.count = 0;

this._trackingManifest = null;

},

};

exports.MozReflowAtom.init();

})(window);