request geolocation perm

src/app/app.module.ts

@@ -12,13 +12,15 @@ import {AgmCoreModule} from "@agm/core";
 import {MaterialModule} from "./material.module";
 import {CalibrateComponent} from "./map/calibrate/calibrate.component";
 import {MatInputModule} from "@angular/material";
+import {PermissionsComponent} from "./permissions/permissions.component";
 
 @NgModule({
     declarations: [
         AppComponent,
         CalibrateComponent,
         HomeComponent,
-        MapComponent
+        MapComponent,
+        PermissionsComponent
     ],
     imports: [
         AgmCoreModule.forRoot({apiKey: 'AIzaSyDFtvCY6nH_HUoTBNf_5b-E8nRweSLYtxE'}),
@@ -31,7 +33,7 @@ import {MatInputModule} from "@angular/material";
         MatInputModule,
     ],
     providers: [],
-    entryComponents: [CalibrateComponent],
+    entryComponents: [CalibrateComponent, PermissionsComponent],
     bootstrap: [AppComponent]
 })
 export class AppModule {

src/app/material.module.ts

@@ -1,6 +1,6 @@
 import {
     MatBottomSheetModule,
-    MatButtonModule, MatDividerModule, MatFormFieldModule,
+    MatButtonModule, MatDialogModule, MatDividerModule, MatFormFieldModule,
     MatIconModule, MatInputModule, MatMenuModule, MatSliderModule,
     MatSnackBarModule,
     MatToolbarModule
@@ -10,6 +10,7 @@ import {NgModule} from "@angular/core";
 export const materialModules = [
     MatBottomSheetModule,
     MatButtonModule,
+    MatDialogModule,
     MatDividerModule,
     MatFormFieldModule,
     MatIconModule,

src/app/permissions/permissions.component.html

@@ -0,0 +1,10 @@
+<div mat-dialog-content>
+    <div class="d-flex">
+        <div><mat-icon class="mr-2">{{icon}}</mat-icon></div>
+        <div><p class="d-inline">{{message}}</p></div>
+    </div>
+</div>
+<div mat-dialog-actions class="float-right">
+    <button mat-button [mat-dialog-close]="false">No Thanks</button>
+    <button mat-button [mat-dialog-close]="true">Ok</button>
+</div>

src/app/permissions/permissions.component.ts

@@ -0,0 +1,16 @@
+import { Component, Inject } from "@angular/core";
+import { MAT_DIALOG_DATA } from "@angular/material";
+
+@Component({
+    selector: 'permissions',
+    templateUrl: 'permissions.component.html'
+})
+export class PermissionsComponent {
+    icon: string;
+    message: string;
+
+    constructor(@Inject(MAT_DIALOG_DATA) data) {
+        this.icon = data.icon;
+        this.message = data.message;
+    }
+}

src/app/permissions/permissions.service.ts

@@ -0,0 +1,18 @@
+import {Injectable} from "@angular/core";
+import {MatDialog} from "@angular/material";
+import {PermissionsComponent} from "./permissions.component";
+
+@Injectable({
+    providedIn: 'root'
+})
+export class PermissionsService {
+    constructor(private dialog: MatDialog) { }
+
+    async requestPermission(name: string, icon: string, message: string) {
+        let perm = await navigator['permissions'].query({name: name});
+        if (perm.state == 'prompt') {
+            return await this.dialog.open(PermissionsComponent, {autoFocus: false, data: {icon: icon, message: message}}).afterClosed().toPromise();
+        }
+        return perm.state == 'granted'
+    }
+}

src/app/physics/physics.service.ts

@@ -1,6 +1,7 @@
 import {EventEmitter, Injectable} from '@angular/core';
 import {BehaviorSubject, combineLatest} from "rxjs";
 import {debounceTime} from "rxjs/operators";
+import {PermissionsService} from "../permissions/permissions.service";
 
 @Injectable({
     providedIn: 'root'
@@ -17,7 +18,9 @@ export class PhysicsService {
     position = new BehaviorSubject<Position>(null);
     speed = new BehaviorSubject(null);
 
-    constructor() {
+    constructor(permissionsService: PermissionsService) {
+        permissionsService.requestPermission('geolocation', 'gps_fixed', 'Can we use your location?').then(granted => {
+            if(granted) {
                 // Gather physical data
                 window.addEventListener('deviceorientation', orientation => this.orientation.next(orientation));
                 window.addEventListener('devicemotion', motion => this.motion.next(motion));
@@ -66,4 +69,6 @@ export class PhysicsService {
                     this.info.next(info);
                 })
             }
+        });
+    }
 }