@angular/router - can deactivate destination URL #10186

<!DOCTYPE html>
<html>

  <head>
    <!-- Set the base href -->
    <script>document.write('<base href="' + document.location + '" />');</script>
    <title>Router Sample</title>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <!-- Polyfill(s) for older browsers -->
    <script src="https://npmcdn.com/core-js/client/shim.min.js"></script>
    <script src="https://npmcdn.com/zone.js@0.6.12?main=browser"></script>
    <script src="https://npmcdn.com/reflect-metadata@0.1.3"></script>
    <script src="https://npmcdn.com/systemjs@0.19.27/dist/system.src.js"></script>
    <script src="systemjs.config.js"></script>
    <script>
      System.import('app').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <my-app>loading...</my-app>
    <!-- 
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
  </body>

</html>

//main entry point
import {bootstrap} from '@angular/platform-browser-dynamic';
import {App} from './app';
import {APP_ROUTER_PROVIDERS} from './app.routes';
import {HTTP_PROVIDERS} from '@angular/http';

bootstrap(App, [
  APP_ROUTER_PROVIDERS,
  HTTP_PROVIDERS
]);

//our root app component
import {Component} from '@angular/core';
import {ROUTER_DIRECTIVES} from '@angular/router';

@Component({
  selector: 'my-app',
  template: `
    <a [routerLink]="['/']">Home</a> | 
    <a [routerLink]="['/away']">Away</a> |
    <a [routerLink]="['/invalid']">Page Not Found</a>
    <hr>
    <router-outlet></router-outlet>
  `,
  directives: [ROUTER_DIRECTIVES]
})
export class App {
}

import {Component} from '@angular/core';

@Component({
  selector: 'home',
  template: `
    Welcome Home
  `
})
export class Home {
}

/**
 * PLUNKER VERSION (based on systemjs.config.js in angular.io)
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function(global) {

  var ngVer     = '@2.0.0-rc.4'; // lock in the angular package version; do not let it float to current!
  var routerVer = '@3.0.0-beta.2'; // lock router version

  //map tells the System loader where to look for things
  var  map = {
    'app':                        'src',

    '@angular':                   'https://npmcdn.com/@angular', // sufficient if we didn't pin the version
    '@angular/router':            'https://npmcdn.com/@angular/router' + routerVer,
    'angular2-in-memory-web-api': 'https://npmcdn.com/angular2-in-memory-web-api', // get latest
    'rxjs':                       'https://npmcdn.com/rxjs@5.0.0-beta.6',
    'ts':                         'https://npmcdn.com/plugin-typescript@4.0.10/lib/plugin.js',
    'typescript':                 'https://npmcdn.com/typescript@1.9.0-dev.20160409/lib/typescript.js',
 };

  //packages tells the System loader how to load when no filename and/or no extension
  var packages = {
    'app':                        { main: 'main.ts',  defaultExtension: 'ts' },
    'rxjs':                       { defaultExtension: 'js' },
    'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
  };

  var ngPackageNames = [
    'common',
    'compiler',
    'core',
    'http',
    'platform-browser',
    'platform-browser-dynamic',
    'router-deprecated',
    'upgrade',
  ];

  // Add map entries for each angular package
  // only because we're pinning the version with `ngVer`.
  ngPackageNames.forEach(function(pkgName) {
    map['@angular/'+pkgName] = 'https://npmcdn.com/@angular/' + pkgName + ngVer;
  });

  // Add package entries for angular packages
  ngPackageNames.forEach(function(pkgName) {

    // Bundled (~40 requests):
    //packages['@angular/'+pkgName] = { main: pkgName + '.umd.js', defaultExtension: 'js' };

    // Individual files (~300 requests):
    packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
  });

  // No umd for router yet
  packages['@angular/router'] = { main: 'index.js', defaultExtension: 'js' };

  var config = {
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      tsconfig: true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    map: map,
    packages: packages
  }

  System.config(config);

})(this);


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

import {Component} from '@angular/core';

@Component({
  selector: 'away',
  template: `
    See you soon!
  `
})
export class Away {}

import {provideRouter, RouterConfig} from '@angular/router';
import {Home} from './home';
import {Away} from './away';
import {PageNotFound} from './notfound';
import {CanDeactivateGuard} from './candeactivate';

const routes: RouterConfig = [
  {
    path: '',
    component: Home
  },
  {
    path: 'away',
    component: Away,
    canDeactivate: [CanDeactivateGuard]
  },
  {
    path: '**',
    component: PageNotFound
  }
];

export const APP_ROUTER_PROVIDERS = [
  provideRouter(routes, { enableTracing: false }),
  CanDeactivateGuard
];

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  }
}

import {Component} from '@angular/core';

@Component({
  selector: 'not-found',
  template: `
    Page Not Found
  `
})
export class PageNotFound {

}

import {Injectable} from '@angular/core';
import {Observable} from 'rxjs/Observable';
import {CanDeactivate, Router, NavigationEvent, RoutesRecognized} from '@angular/router';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/filter';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/take';

@Injectable()
export class CanDeactivateGuard implements CanDeactivate<any> {
  constructor(private router: Router) {}
  
  canDeactivate(component: any, route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
    console.log('destination url', state.url);
    return true;
  }
}