Update WebViewJSRuntime.cs (#40943)

MackinnonBuck · web-flow · commit 4c7c1b738481 · 2022-03-30T08:45:27.000-07:00
diff --git a/src/Components/WebView/WebView/src/Services/WebViewJSRuntime.cs b/src/Components/WebView/WebView/src/Services/WebViewJSRuntime.cs
@@ -30,6 +30,11 @@ public void AttachToWebView(IpcSender ipcSender)
 
     protected override void BeginInvokeJS(long taskId, string identifier, string argsJson, JSCallResultType resultType, long targetInstanceId)
     {
+        if (_ipcSender is null)
+        {
+            throw new InvalidOperationException("Cannot invoke JavaScript outside of a WebView context.");
+        }
+
         _ipcSender.BeginInvokeJS(taskId, identifier, argsJson, resultType, targetInstanceId);
     }
 

Original file line number	Diff line number	Diff line change
`@@ -30,6 +30,11 @@ public void AttachToWebView(IpcSender ipcSender)`
`30`	`30`
`31`	`31`	`protected override void BeginInvokeJS(long taskId, string identifier, string argsJson, JSCallResultType resultType, long targetInstanceId)`
`32`	`32`	`{`
	`33`	`+ if (_ipcSender is null)`
	`34`	`+ {`
	`35`	`+ throw new InvalidOperationException("Cannot invoke JavaScript outside of a WebView context.");`
	`36`	`+ }`
	`37`	`+`
`33`	`38`	`_ipcSender.BeginInvokeJS(taskId, identifier, argsJson, resultType, targetInstanceId);`
`34`	`39`	`}`
`35`	`40`