Reorganise project structure and namespaces. Remove Leaflet project and replace with Darnton.Blazor.Leaflet package.

Darnton.Blazor.DeviceInterop/wwwroot/js/Geolocation.js

@@ -0,0 +1,65 @@
+window.Geolocation = {
+
+    getCurrentPosition: async function (options) {
+        var result = { position: null, error: null };
+        var getCurrentPositionPromise = new Promise((resolve, reject) => {
+            if (!navigator.geolocation) {
+                reject({ code: 0, message: 'This device does not support geolocation.' });
+            } else {
+                navigator.geolocation.getCurrentPosition(resolve, reject, options);
+            }
+        });
+        await getCurrentPositionPromise.then(
+            (position) => { this.mapPositionToResult(position, result) }
+        ).catch(
+            (error) => { this.mapErrorToResult(error, result) }
+        );
+        return result;
+    },
+
+    watchPosition: async function (dotNetCallbackRef, callbackMethod, options) {
+        if (!navigator.geolocation) return null;
+
+        return navigator.geolocation.watchPosition(
+            (position) => {
+                let result = { position: null, error: null };
+                this.mapPositionToResult(position, result);
+                dotNetCallbackRef.invokeMethodAsync(callbackMethod, result);
+            },
+            (error) => {
+                let result = { position: null, error: null };
+                this.mapErrorToResult(error, result);
+                dotNetCallbackRef.invokeMethodAsync(callbackMethod, result);
+            },
+            options);
+    },
+
+    clearWatch: function (id) {
+        if (navigator.geolocation) {
+            navigator.geolocation.clearWatch(id);
+        }
+    },
+
+    mapPositionToResult: function (position, result) {
+        result.position = {
+            coords: {
+                latitude: position.coords.latitude,
+                longitude: position.coords.longitude,
+                altitude: position.coords.altitude,
+                accuracy: position.coords.accuracy,
+                altitudeAccuracy: position.coords.altitudeAccuracy,
+                heading: position.coords.heading,
+                speed: position.coords.speed
+            },
+            timestamp: position.timestamp
+        }
+    },
+
+    mapErrorToResult: function (error, result) {
+        result.error = {
+            code: error.code,
+            message: code.message
+        }
+    }
+
+}