From d72c6c5d6ec7bbb157ea228bfbbeb5e6c0768694 Mon Sep 17 00:00:00 2001
From: Marcin Kurczewski <mkurczew@gmail.com>
Date: Tue, 16 Sep 2014 17:29:11 +0200
Subject: [PATCH] Fixed page exit confirmation

---
 public_html/js/Router.js | 13 +++++++++++++
 public_html/js/Util.js   |  8 ++++++++
 2 files changed, 21 insertions(+)

diff --git a/public_html/js/Router.js b/public_html/js/Router.js
index 3c34e931..1115ae6e 100644
--- a/public_html/js/Router.js
+++ b/public_html/js/Router.js
@@ -3,6 +3,7 @@ var App = App || {};
 App.Router = function(pathJs, _, jQuery, util, appState, presenterManager) {
 
 	var root = '#/';
+	var previousLocation = window.location.href;
 
 	injectRoutes();
 
@@ -57,6 +58,18 @@ App.Router = function(pathJs, _, jQuery, util, appState, presenterManager) {
 				{previousRoute: pathJs.routes.previous});
 
 			presenterManager.switchContentPresenter( presenterName, finalParams);
+		}).enter(function(e) {
+			if (util.isExitConfirmationEnabled()) {
+				if (window.location.href !== previousLocation) {
+					if (!window.confirm('Are you sure you want to leave this page? Data will be lost.')) {
+						window.location.href = previousLocation;
+						return false;
+					} else {
+						util.disableExitConfirmation();
+					}
+				}
+			}
+			previousLocation = window.location.href;
 		});
 	}
 
diff --git a/public_html/js/Util.js b/public_html/js/Util.js
index 88c48949..2f71dfcd 100644
--- a/public_html/js/Util.js
+++ b/public_html/js/Util.js
@@ -3,17 +3,24 @@ var App = App || {};
 App.Util = function(_, jQuery, promise) {
 
 	var templateCache = {};
+	var exitConfirmationEnabled = false;
 
 	function enableExitConfirmation() {
+		exitConfirmationEnabled = true;
 		jQuery(window).bind('beforeunload', function(e) {
 			return 'There are unsaved changes.';
 		});
 	}
 
 	function disableExitConfirmation() {
+		exitConfirmationEnabled = false;
 		jQuery(window).unbind('beforeunload');
 	}
 
+	function isExitConfirmationEnabled() {
+		return exitConfirmationEnabled;
+	}
+
 	function parseComplexRouteArgs(args) {
 		var result = {};
 		args = (args || '').split(/;/);
@@ -148,6 +155,7 @@ App.Util = function(_, jQuery, promise) {
 		formatRelativeTime: formatRelativeTime,
 		enableExitConfirmation: enableExitConfirmation,
 		disableExitConfirmation: disableExitConfirmation,
+		isExitConfirmationEnabled: isExitConfirmationEnabled,
 	};
 
 };