Implement IComponentHandler::beginEdit()

src/plugin/bridges/vst3-impls/plugin-proxy.h

@@ -122,9 +122,6 @@ class Vst3PluginProxyImpl : public Vst3PluginProxy {
     tresult PLUGIN_API initialize(FUnknown* context) override;
     tresult PLUGIN_API terminate() override;
 
-   private:
-    Vst3PluginBridge& bridge;
-
     /**
      * An `IHostApplication` instance if we get one through
      * `IPluginBase::initialize()`. This should be the same for all plugin
@@ -141,4 +138,7 @@ class Vst3PluginProxyImpl : public Vst3PluginProxy {
      * to this object.
      */
     Steinberg::IPtr<Steinberg::Vst::IComponentHandler> component_handler;
+
+   private:
+    Vst3PluginBridge& bridge;
 };

src/plugin/bridges/vst3.cpp

@@ -79,8 +79,17 @@ Vst3PluginBridge::Vst3PluginBridge()
     host_callback_handler = std::jthread([&]() {
         sockets.vst_host_callback.receive_messages(
             std::pair<Vst3Logger&, bool>(logger, false),
-            overload{[&](const WantsConfiguration&)
-                         -> WantsConfiguration::Response { return config; }});
+            overload{
+                [&](const WantsConfiguration&) -> WantsConfiguration::Response {
+                    return config;
+                },
+                [&](const YaComponentHandler::BeginEdit& request)
+                    -> YaComponentHandler::BeginEdit::Response {
+                    return plugin_proxies.at(request.owner_instance_id)
+                        .get()
+                        .component_handler->beginEdit(request.id);
+                },
+            });
     });
 }