Consider offline during update checks

Hides the spinner if the update checks fail cause the server is
unreachable

use new cleansup the code a little

client/package.json

@@ -96,7 +96,7 @@
         "karma-jasmine-html-reporter": "^1.4.0",
         "npm-license-crawler": "^0.2.1",
         "npm-run-all": "^4.1.5",
-        "prettier": "^1.18.2",
+        "prettier": "^1.19.1",
         "protractor": "^5.4.2",
         "resize-observer-polyfill": "^1.5.1",
         "source-map-explorer": "^2.0.1",

client/src/app/core/ui-services/linenumbering.service.ts

@@ -625,7 +625,7 @@ export class LinenumberingService {
                         };
                     }
                 }
-                if (lineBreakAt !== null && (node.nodeValue[i] !== ' ' && node.nodeValue[i] !== '\n')) {
+                if (lineBreakAt !== null && node.nodeValue[i] !== ' ' && node.nodeValue[i] !== '\n') {
                     if (lineBreakAt.node === node) {
                         // The last possible breaking point is in this text node
                         const currLine = node.nodeValue.substring(currLineStart, lineBreakAt.offset + 1);

client/src/app/core/ui-services/overlay.service.ts

@@ -2,10 +2,12 @@ import { Injectable } from '@angular/core';
 import { MatDialog, MatDialogRef } from '@angular/material';
 
 import { Observable, Subject } from 'rxjs';
+import { distinctUntilChanged } from 'rxjs/operators';
 
 import { largeDialogSettings } from 'app/shared/utils/dialog-settings';
 import { SuperSearchComponent } from 'app/site/common/components/super-search/super-search.component';
 import { DataStoreUpgradeService } from '../core-services/data-store-upgrade.service';
+import { OfflineService } from '../core-services/offline.service';
 import { OpenSlidesService } from '../core-services/openslides.service';
 import { OperatorService } from '../core-services/operator.service';
 
@@ -43,6 +45,11 @@ export class OverlayService {
      */
     private hasBooted = false;
 
+    /**
+     * Flag, whether the client is offline or not
+     */
+    private isOffline = false;
+
     /**
      *
      * @param dialogService Injects the `MatDialog` to show the `super-search.component`
@@ -51,7 +58,8 @@ export class OverlayService {
         private dialogService: MatDialog,
         private operator: OperatorService,
         OpenSlides: OpenSlidesService,
-        upgradeService: DataStoreUpgradeService
+        upgradeService: DataStoreUpgradeService,
+        offlineService: OfflineService
     ) {
         // Subscribe to the current user.
         operator.getViewUserObservable().subscribe(user => {
@@ -70,6 +78,14 @@ export class OverlayService {
             this.upgradeChecked = upgradeDone;
             this.checkConnection();
         });
+        // Subscribe to check if we are offline
+        offlineService
+            .isOffline()
+            .pipe(distinctUntilChanged())
+            .subscribe(offline => {
+                this.isOffline = offline;
+                this.checkConnection();
+            });
     }
 
     /**
@@ -126,7 +142,7 @@ export class OverlayService {
      * @returns True, if the three booleans are all true.
      */
     public isConnectionStable(): boolean {
-        return this.upgradeChecked && this.hasBooted && (!!this.user || this.operator.isAnonymous);
+        return (this.upgradeChecked || this.isOffline) && this.hasBooted && (!!this.user || this.operator.isAnonymous);
     }
 
     /**

client/src/app/core/ui-services/poll.service.ts

@@ -100,7 +100,10 @@ export abstract class PollService {
      * TODO: Should be given by the server, and editable. For now they are hard
      * coded
      */
-    private _specialPollVotes: [number, string][] = [[-1, 'majority'], [-2, 'undocumented']];
+    private _specialPollVotes: [number, string][] = [
+        [-1, 'majority'],
+        [-2, 'undocumented']
+    ];
 
     /**
      * getter for the special vote values

client/src/app/core/ui-services/search.service.ts

@@ -209,7 +209,7 @@ export class SearchService {
             .map(searchModel => {
                 const results = this.viewModelStore
                     .getAll(searchModel.collectionString)
-                    .map(x => x as (BaseViewModel & Searchable))
+                    .map(x => x as BaseViewModel & Searchable)
                     .filter(model =>
                         !searchOnlyById
                             ? model.id === dedicatedId ||

client/src/app/shared/components/sorting-tree/sorting-tree.component.ts

@@ -69,7 +69,10 @@ export class SortingTreeComponent<T extends Identifiable & Displayable> implemen
     /**
      * The tree control
      */
-    public treeControl = new FlatTreeControl<FlatNode<T>>(node => node.level, node => node.expandable);
+    public treeControl = new FlatTreeControl<FlatNode<T>>(
+        node => node.level,
+        node => node.expandable
+    );
 
     /**
      * Source for the tree

client/src/app/site/agenda/components/list-of-speakers/list-of-speakers.component.ts

@@ -312,7 +312,10 @@ export class ListOfSpeakersComponent extends BaseViewComponent implements OnInit
         if (this.isSortMode) {
             this.isSortMode = false;
             this.listOfSpeakersRepo
-                .sortSpeakers(this.viewListOfSpeakers, this.listElement.sortedItems.map(el => el.id))
+                .sortSpeakers(
+                    this.viewListOfSpeakers,
+                    this.listElement.sortedItems.map(el => el.id)
+                )
                 .catch(this.raiseError);
         }
     }

client/src/app/site/assignments/components/assignment-detail/assignment-detail.component.ts

@@ -494,7 +494,10 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      */
     public onSortingChange(listInNewOrder: ViewAssignmentRelatedUser[]): void {
         this.repo
-            .sortCandidates(listInNewOrder.map(relatedUser => relatedUser.id), this.assignment)
+            .sortCandidates(
+                listInNewOrder.map(relatedUser => relatedUser.id),
+                this.assignment
+            )
             .catch(this.raiseError);
     }
 

client/src/app/site/motions/models/view-category.ts

@@ -72,7 +72,10 @@ export class ViewCategory extends BaseViewModel<Category> implements CategoryTit
 
     public formatForSearch(): SearchRepresentation {
         return {
-            properties: [{ key: 'Name', value: this.name }, { key: 'Prefix', value: this.prefix }],
+            properties: [
+                { key: 'Name', value: this.name },
+                { key: 'Prefix', value: this.prefix }
+            ],
             searchValue: [this.name, this.prefix]
         };
     }

client/src/app/site/motions/services/motion-csv-export.service.ts

@@ -100,7 +100,8 @@ export class MotionCsvExportService {
         const properties = sortMotionPropertyList(['identifier', 'title'].concat(contentToExport));
         const exportProperties: (
             | CsvColumnDefinitionProperty<ViewMotion>
-            | CsvColumnDefinitionMap<ViewMotion>)[] = properties.map(option => {
+            | CsvColumnDefinitionMap<ViewMotion>
+        )[] = properties.map(option => {
             if (option === 'recommendation') {
                 return {
                     label: 'recommendation',

client/src/app/site/topics/models/view-topic.ts

@@ -24,7 +24,10 @@ export class ViewTopic extends BaseViewModelWithAgendaItemAndListOfSpeakers<Topi
      */
     public formatForSearch(): SearchRepresentation {
         return {
-            properties: [{ key: 'Title', value: this.getTitle() }, { key: 'Text', value: this.text }],
+            properties: [
+                { key: 'Title', value: this.getTitle() },
+                { key: 'Text', value: this.text }
+            ],
             searchValue: [this.getTitle(), this.text]
         };
     }