From 0d5a47826a6e0012d482df156baded7e9e5f3c93 Mon Sep 17 00:00:00 2001
From: Valentas <valentas.mat@gmail.com>
Date: Thu, 25 Jul 2024 21:37:42 +0300
Subject: [PATCH] AdvancedMarkerElement needs GetPosition or equivalent. #346

---
 GoogleMapsComponents/GoogleMapsComponents.csproj   |  2 +-
 GoogleMapsComponents/JsObjectRef.cs                |  9 +++++++++
 GoogleMapsComponents/Maps/AdvancedMarkerView.cs    |  5 +++++
 GoogleMapsComponents/wwwroot/js/objectManager.js   | 11 ++++++++++-
 .../Pages/MapAdvancedMarkerViewPage.razor          | 14 ++++++++++++++
 5 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/GoogleMapsComponents/GoogleMapsComponents.csproj b/GoogleMapsComponents/GoogleMapsComponents.csproj
index 10050f01..abc0fe17 100644
--- a/GoogleMapsComponents/GoogleMapsComponents.csproj
+++ b/GoogleMapsComponents/GoogleMapsComponents.csproj
@@ -15,7 +15,7 @@
 		<RazorLangVersion>3.0</RazorLangVersion>
 		<AddRazorSupportForMvc>true</AddRazorSupportForMvc>
 		<PackageId>BlazorGoogleMaps</PackageId>
-		<Version>4.7.1</Version>
+		<Version>4.7.2</Version>
 		<Authors>Rungwiroon</Authors>
 		<Company>QueueStack Solution</Company>
 		<Product>BlazorGoogleMaps</Product>
diff --git a/GoogleMapsComponents/JsObjectRef.cs b/GoogleMapsComponents/JsObjectRef.cs
index 8ca1c635..6f498006 100644
--- a/GoogleMapsComponents/JsObjectRef.cs
+++ b/GoogleMapsComponents/JsObjectRef.cs
@@ -203,6 +203,15 @@ public Task InvokePropertyAsync(string functionName, params object?[] args)
         );
     }
 
+    public Task<T> InvokePropertyAsync<T>(string functionName, params object?[] args)
+    {
+        return _jsRuntime.MyInvokeAsync<T>(
+            "blazorGoogleMaps.objectManager.invokeProperty",
+            new object[] { _guid.ToString(), functionName }
+                .Concat(args).ToArray()
+        );
+    }
+
     public Task<T> InvokeAsync<T>(string functionName, params object?[] args)
     {
         return _jsRuntime.MyInvokeAsync<T>(
diff --git a/GoogleMapsComponents/Maps/AdvancedMarkerView.cs b/GoogleMapsComponents/Maps/AdvancedMarkerView.cs
index accb15f2..3d4836c7 100644
--- a/GoogleMapsComponents/Maps/AdvancedMarkerView.cs
+++ b/GoogleMapsComponents/Maps/AdvancedMarkerView.cs
@@ -39,6 +39,11 @@ public async Task SetContent(string newContent)
     {
         await _jsObjectRef.InvokePropertyAsync("content", newContent);
     }
+
+    public async Task<LatLngLiteral> GetPosition()
+    {
+        return await _jsObjectRef.InvokePropertyAsync<LatLngLiteral>("position");
+    }
 }
 
 [Obsolete("Use AdvancedMarkerElement")]
diff --git a/GoogleMapsComponents/wwwroot/js/objectManager.js b/GoogleMapsComponents/wwwroot/js/objectManager.js
index 90577b44..87ab4de5 100644
--- a/GoogleMapsComponents/wwwroot/js/objectManager.js
+++ b/GoogleMapsComponents/wwwroot/js/objectManager.js
@@ -532,7 +532,16 @@
                 }
 
                 try {
-                    obj[functionToInvoke] = processedArgs[0];
+                    if (processedArgs.length > 0) {
+                        obj[functionToInvoke] = processedArgs[0]
+                    } else {
+                        const result = obj[functionToInvoke];
+                        if (result && typeof result === "object") {
+                            return JSON.parse(extendableStringify(result, getCircularReplacer()));
+                        } else {
+                            return result;
+                        }
+                    }
                 } catch (e) {
                     console.error(`Error invoking property: Function: ${functionToInvoke} Arguments: ${JSON.stringify(processedArgs)} Error: ${e}`);
                 }
diff --git a/ServerSideDemo/Pages/MapAdvancedMarkerViewPage.razor b/ServerSideDemo/Pages/MapAdvancedMarkerViewPage.razor
index 29044ac3..35e74d95 100644
--- a/ServerSideDemo/Pages/MapAdvancedMarkerViewPage.razor
+++ b/ServerSideDemo/Pages/MapAdvancedMarkerViewPage.razor
@@ -11,6 +11,7 @@
 <button @onclick="@UpdatePosition">Recenter last</button>
 <button @onclick="@UpdateContent">Update content</button>
 <button @onclick="@AddMarkerWithPinElement">Add marker with pin element</button>
+<button @onclick="GetMarkerPosition">Get advanced markers position</button>
 <br/>
 <p>Marker list</p>
 <button @onclick="AddMarker1">Add advanced markers part 1</button>
@@ -285,4 +286,17 @@
         var lastMarker = _markers.Peek();
         await lastMarker.SetContent(newContent);
     }
+
+    private async Task GetMarkerPosition()
+    {
+        if (!_markers.Any())
+        {
+            return;
+        }
+
+        var lastMarker = _markers.Peek();
+        var position = await lastMarker.GetPosition();
+        _events.Add($"Marker position {position.Lat} {position.Lng}");
+        StateHasChanged();
+    }
 }