Maintain page when switching networks

frontend/src/app/components/master-page/master-page.component.ts

@@ -3,6 +3,7 @@ import { Env, StateService } from '../../services/state.service';
 import { Observable, merge, of } from 'rxjs';
 import { LanguageService } from '../../services/language.service';
 import { EnterpriseService } from '../../services/enterprise.service';
+import { NavigationService } from '../../services/navigation.service';
 
 @Component({
   selector: 'app-master-page',
@@ -18,11 +19,13 @@ export class MasterPageComponent implements OnInit {
   officialMempoolSpace = this.stateService.env.OFFICIAL_MEMPOOL_SPACE;
   urlLanguage: string;
   subdomain = '';
+  networkPaths: { [network: string]: string };
 
   constructor(
     public stateService: StateService,
     private languageService: LanguageService,
     private enterpriseService: EnterpriseService,
+    private navigationService: NavigationService,
   ) { }
 
   ngOnInit() {
@@ -31,6 +34,10 @@ export class MasterPageComponent implements OnInit {
     this.network$ = merge(of(''), this.stateService.networkChanged$);
     this.urlLanguage = this.languageService.getLanguageForUrl();
     this.subdomain = this.enterpriseService.getSubdomain();
+    this.navigationService.subnetPaths.subscribe((paths) => {
+      console.log('network paths updated...');
+      this.networkPaths = paths;
+    });
   }
 
   collapse(): void {