Decorate rackt/history with history of previous locations

Could be turned into a createHistory enhancer function
(https://github.com/rackt/history/blob/master/docs/Glossary.md#createhis
toryenhancer), but we’ll see what the guys at rackt/history say about
it…

js/components/ascribe_app.js

@@ -1,11 +1,14 @@
 'use strict';
 
 import React from 'react';
+import { History } from 'react-router';
 
-import Header from '../components/header';
+import Header from './header';
-import Footer from '../components/footer';
+import Footer from './footer';
 import GlobalNotification from './global_notification';
 
+import AppConstants from '../constants/application_constants';
+
 
 let AscribeApp = React.createClass({
     propTypes: {
@@ -13,11 +16,28 @@ let AscribeApp = React.createClass({
             React.PropTypes.arrayOf(React.PropTypes.element),
             React.PropTypes.element
         ]),
-        routes: React.PropTypes.arrayOf(React.PropTypes.object)
+        routes: React.PropTypes.arrayOf(React.PropTypes.object),
+        location: React.PropTypes.object
+    },
+
+    mixins: [History],
+
+    componentDidMount() {
+        this.history.locationQueue.push(this.props.location);
+    },
+
+    componentWillReceiveProps(nextProps) {
+        const { locationQueue } = this.history;
+        locationQueue.unshift(nextProps.location);
+
+        // Limit the number of locations to keep in memory to avoid too much memory usage
+        if (locationQueue.length > AppConstants.locationThreshold) {
+            locationQueue.length = AppConstants.locationThreshold;
+        }
     },
 
     render() {
-        let { children, routes } = this.props;
+        const { children, routes } = this.props;
 
         return (
             <div className="container ascribe-default-app">

js/constants/application_constants.js

@@ -104,6 +104,8 @@ const constants = {
         'IVARO', 'SIAE', 'JASPAR-SPDA', 'AKKA/LAA', 'LATGA-A', 'SOMAAP', 'ARTEGESTION', 'CARIER', 'BONO', 'APSAV',
         'SPA', 'GESTOR', 'VISaRTA', 'RAO', 'LITA', 'DALRO', 'VeGaP', 'BUS', 'ProLitteris', 'AGADU', 'AUTORARTE', 'BUBEDRA', 'BBDA', 'BCDA', 'BURIDA', 'ADAVIS', 'BSDA'],
 
+    'locationThreshold': 10,
+
     'searchThreshold': 500,
 
     'supportedThumbnailFileFormats': [

js/history.js

@@ -6,8 +6,12 @@ import AppConstants from './constants/application_constants';
 
 
 // Remove the trailing slash if present
-let baseUrl = AppConstants.baseUrl.replace(/\/$/, '');
+const baseUrl = AppConstants.baseUrl.replace(/\/$/, '');
 
-export default useBasename(createBrowserHistory)({
+const history = useBasename(createBrowserHistory)({
     basename: baseUrl
 });
+
+history.locationQueue = [];
+
+export default history;