From bab6023eee1d34a8b27c28cd44af3c9096b167cd Mon Sep 17 00:00:00 2001
From: Vanga Sasidhar <sasidhar@sasidhar.com>
Date: Wed, 6 Apr 2016 21:38:43 +0530
Subject: [PATCH] fix(router): Added pushState fallback for IE 9 browser.

Closes #6506

Closes #7929
---
 .../browser/location/browser_platform_location.ts  | 14 +++++++++++---
 .../src/browser/location/history.dart              |  3 +++
 .../src/browser/location/history.ts                |  3 +++
 3 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 modules/@angular/platform-browser/src/browser/location/history.dart
 create mode 100644 modules/@angular/platform-browser/src/browser/location/history.ts

diff --git a/modules/@angular/platform-browser/src/browser/location/browser_platform_location.ts b/modules/@angular/platform-browser/src/browser/location/browser_platform_location.ts
index 7c89bcc5e0..1f74bdb949 100644
--- a/modules/@angular/platform-browser/src/browser/location/browser_platform_location.ts
+++ b/modules/@angular/platform-browser/src/browser/location/browser_platform_location.ts
@@ -2,7 +2,7 @@ import {Injectable} from '@angular/core';
 import {History, Location} from '../../../src/facade/browser';
 import {UrlChangeListener, PlatformLocation} from '@angular/common';
 import {getDOM} from '../../dom/dom_adapter';
-
+import {supportsState} from './history';
 
 
 /**
@@ -46,11 +46,19 @@ export class BrowserPlatformLocation extends PlatformLocation {
   set pathname(newPath: string) { this._location.pathname = newPath; }
 
   pushState(state: any, title: string, url: string): void {
-    this._history.pushState(state, title, url);
+    if(supportsState()) {
+      this._history.pushState(state, title, url);
+    } else {
+      this._location.hash = url;
+    }
   }
 
   replaceState(state: any, title: string, url: string): void {
-    this._history.replaceState(state, title, url);
+    if(supportsState()) {
+      this._history.replaceState(state, title, url);
+    } else {
+      this._location.hash = url;
+    }
   }
 
   forward(): void { this._history.forward(); }
diff --git a/modules/@angular/platform-browser/src/browser/location/history.dart b/modules/@angular/platform-browser/src/browser/location/history.dart
new file mode 100644
index 0000000000..1a06ea9ff6
--- /dev/null
+++ b/modules/@angular/platform-browser/src/browser/location/history.dart
@@ -0,0 +1,3 @@
+import 'dart:html' show History;
+
+bool supportsState() => History.supportsState;
\ No newline at end of file
diff --git a/modules/@angular/platform-browser/src/browser/location/history.ts b/modules/@angular/platform-browser/src/browser/location/history.ts
new file mode 100644
index 0000000000..92104a3c94
--- /dev/null
+++ b/modules/@angular/platform-browser/src/browser/location/history.ts
@@ -0,0 +1,3 @@
+export function supportsState(): boolean {
+    return !!window.history.pushState;
+}
\ No newline at end of file