Added framework for URL-change condition for virtualPage call

lib/index.js

@@ -20,6 +20,7 @@ var Chartbeat = module.exports = integration('Chartbeat')
   .option('uid', null)
   .option('video', false)
   .option('sendNameAndCategoryAsTitle', false)
+  .option('trackGalleryClicksAsPageviews', false)
   .option('subscriberEngagementKeys', [])
 
   .tag('<script src="//static.chartbeat.com/js/{{ script }}">');
@@ -37,6 +38,7 @@ Chartbeat.prototype.loaded = function() {
 
 Chartbeat.prototype.initialize = function() {
   this.pageCalledYet = false;
+  this.currentURL = window.location.href;
   this._ready = true; // temporarily switch ready to true so that a single page call can fire
 };
 
@@ -51,14 +53,15 @@ Chartbeat.prototype.initialize = function() {
 
 Chartbeat.prototype.page = function(page) {
   this.updateConfig(page);
+  var urlChanged = this.currentURL !== window.location.pathname;
 
   // since chartbeat automatically calls a page when it loads, don't load chartbeat script until
   // first Segment page call comes in and configures global config vars using its props
   if (!this.pageCalledYet) {
     this._ready = false;  // switch ready to false so that no pages after the first one can fire until _initialize has loaded chartbeat script
     this.pageCalledYet = true;
     this._initialize();
-  } else {
+  } else if (this.options.trackGalleryClicksAsPageviews || urlChanged) {
     var props = page.properties();
     window.pSUPERFLY.virtualPage(props.path);
   }