fix(router): port fixes done on angular current router to the new one

The bugs were fixed on current angular router in the following commits:
angular/angular@b2a7fd05cb
angular/angular@fa2ce8100b
angular/angular@595bcdd1ac

Closes #12

modules/@angular/router/package.json

@@ -33,11 +33,11 @@
   },
   "homepage": "https://github.com/angular/vladivostok#readme",
   "dependencies": {
-    "@angular/common": "^2.0.0-rc.1",
-    "@angular/compiler": "^2.0.0-rc.1",
-    "@angular/core": "^2.0.0-rc.1",
-    "@angular/platform-browser": "^2.0.0-rc.1",
-    "@angular/platform-browser-dynamic": "^2.0.0-rc.1",
+    "@angular/common": "^2.0.0-rc.2",
+    "@angular/compiler": "^2.0.0-rc.2",
+    "@angular/core": "^2.0.0-rc.2",
+    "@angular/platform-browser": "^2.0.0-rc.2",
+    "@angular/platform-browser-dynamic": "^2.0.0-rc.2",
     "rxjs": "5.0.0-beta.6"
   },
   "devDependencies": {

modules/@angular/router/src/directives/router_link.ts

@@ -1,4 +1,5 @@
 import {Directive, HostBinding, HostListener, Input, OnChanges} from '@angular/core';
+import {LocationStrategy} from '@angular/common';
 
 import {Router} from '../router';
 import {ActivatedRoute} from '../router_state';
@@ -46,7 +47,7 @@ export class RouterLink implements OnChanges {
   /**
    * @internal
    */
-  constructor(private router: Router, private route: ActivatedRoute) {}
+  constructor(private router: Router, private route: ActivatedRoute, private locationStrategy: LocationStrategy) {}
 
   @Input()
   set routerLink(data: any[]|string) {
@@ -59,14 +60,18 @@ export class RouterLink implements OnChanges {
 
   ngOnChanges(changes: {}): any { this.updateTargetUrlAndHref(); }
 
-  @HostListener('click')
-  onClick(): boolean {
-    // If no target, or if target is _self, prevent default browser behavior
-    if (!(typeof this.target === 'string') || this.target == '_self') {
-      this.router.navigateByUrl(this.urlTree);
-      return false;
+  @HostListener("click", ["$event.button", "$event.ctrlKey", "$event.metaKey"])
+  onClick(button: number, ctrlKey: boolean, metaKey: boolean): boolean {
+    if (button !== 0 || ctrlKey || metaKey) {
+      return true;
     }
-    return true;
+
+    if (typeof this.target === 'string' && this.target != '_self') {
+      return true;
+    }
+
+    this.router.navigateByUrl(this.urlTree);
+    return false;
   }
 
   private updateTargetUrlAndHref(): void {
@@ -74,7 +79,7 @@ export class RouterLink implements OnChanges {
         this.commands,
         {relativeTo: this.route, queryParams: this.queryParams, fragment: this.fragment});
     if (this.urlTree) {
-      this.href = this.router.serializeUrl(this.urlTree);
+      this.href = this.locationStrategy.prepareExternalUrl(this.router.serializeUrl(this.urlTree));
     }
   }
 }

modules/@angular/router/src/router.ts

@@ -245,10 +245,10 @@ export class Router {
    */
   parseUrl(url: string): UrlTree { return this.urlSerializer.parse(url); }
 
-  private scheduleNavigation(url: UrlTree, pop: boolean): Promise<boolean> {
+  private scheduleNavigation(url: UrlTree, preventPushState: boolean): Promise<boolean> {
     const id = ++this.navigationId;
     this.routerEvents.next(new NavigationStart(id, this.serializeUrl(url)));
-    return Promise.resolve().then((_) => this.runNavigate(url, false, id));
+    return Promise.resolve().then((_) => this.runNavigate(url, preventPushState, id));
   }
 
   private setUpLocationChangeListener(): void {
@@ -257,7 +257,7 @@ export class Router {
     });
   }
 
-  private runNavigate(url: UrlTree, pop: boolean, id: number): Promise<boolean> {
+  private runNavigate(url: UrlTree, preventPushState: boolean, id: number): Promise<boolean> {
     if (id !== this.navigationId) {
       this.location.go(this.urlSerializer.serialize(this.currentUrlTree));
       this.routerEvents.next(new NavigationCancel(id, this.serializeUrl(url)));
@@ -295,7 +295,6 @@ export class Router {
           })
           .forEach((shouldActivate) => {
             if (!shouldActivate || id !== this.navigationId) {
-              this.location.go(this.urlSerializer.serialize(this.currentUrlTree));
               this.routerEvents.next(new NavigationCancel(id, this.serializeUrl(url)));
               return Promise.resolve(false);
             }
@@ -304,8 +303,13 @@ export class Router {
 
             this.currentUrlTree = updatedUrl;
             this.currentRouterState = state;
-            if (!pop) {
-              this.location.go(this.urlSerializer.serialize(updatedUrl));
+            if (!preventPushState) {
+              let path = this.urlSerializer.serialize(updatedUrl);
+              if (this.location.isCurrentPathEqualTo(path)) {
+                this.location.replaceState(path);
+              } else {
+                this.location.go(path);
+              }
             }
           })
           .then(

modules/@angular/router/test/router.spec.ts

@@ -18,7 +18,7 @@ import {TestComponentBuilder, ComponentFixture} from '@angular/compiler/testing'
 import { ComponentResolver } from '@angular/core';
 import { SpyLocation } from '@angular/common/testing';
 import { UrlSerializer, DefaultUrlSerializer, RouterOutletMap, Router, ActivatedRoute, ROUTER_DIRECTIVES, Params,
- RouterStateSnapshot, ActivatedRouteSnapshot, CanActivate, CanDeactivate, Event, NavigationStart, NavigationEnd, NavigationCancel, NavigationError, RoutesRecognized, RouterConfig } from '../src/index';
+  RouterStateSnapshot, ActivatedRouteSnapshot, CanActivate, CanDeactivate, Event, NavigationStart, NavigationEnd, NavigationCancel, NavigationError, RoutesRecognized, RouterConfig } from '../src/index';
 import { Observable } from 'rxjs/Observable';
 import 'rxjs/add/operator/map';
 import {of} from 'rxjs/observable/of';
@@ -79,7 +79,7 @@ describe("Integration", () => {
       expect(location.path()).toEqual('/team/33');
     })));
 
-  xit('should navigate back and forward',
+  it('should navigate back and forward',
     fakeAsync(inject([Router, TestComponentBuilder, Location], (router, tcb, location) => {
       const fixture = tcb.createFakeAsync(RootCmp);
       advance(fixture);
@@ -348,6 +348,32 @@ describe("Integration", () => {
         [NavigationEnd, '/user/fedor']
       ]);
     })));
+
+  it('should replace state when path is equal to current path',
+    fakeAsync(inject([Router, TestComponentBuilder, Location], (router, tcb, location) => {
+      const fixture = tcb.createFakeAsync(RootCmp);
+      advance(fixture);
+
+      router.resetConfig([
+        { path: 'team/:id', component: TeamCmp, children: [
+          { path: 'simple', component: SimpleCmp },
+          { path: 'user/:name', component: UserCmp }
+        ] }
+      ]);
+
+      router.navigateByUrl('/team/33/simple');
+      advance(fixture);
+
+      router.navigateByUrl('/team/22/user/victor');
+      advance(fixture);
+
+      router.navigateByUrl('/team/22/user/victor');
+      advance(fixture);
+
+      location.back();
+      advance(fixture);
+      expect(location.path()).toEqual('/team/33/simple');
+    })));
   
   describe("router links", () => {
     it("should support string router links",