Add MCP combo button to the level editor toolbar

A "MCP" combo button in the top toolbar (LevelEditor.LevelEditorToolBar.User)
opens a dropdown with:
- Status: live Remote Control reachability (:30010, green/red) + re-check, and a
  "Start Remote Control server" action.
- Active tools (N): submenu listing the catalogue from tools.json (name + desc).
- Settings: opens the Setup Wizard tab.

The bridge ping is refactored into PingRc(bool) so it can update a cached status
silently (menu open) or with the startup notification.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Bonchellon
2026-06-24 01:59:55 +03:00
parent 68c1ca32c0
commit c36b8976e1
2 changed files with 189 additions and 1 deletions

View File

@ -23,6 +23,14 @@
#include "Framework/Docking/TabManager.h"
#include "Widgets/Docking/SDockTab.h"
#include "Styling/AppStyle.h"
#include "Engine/Engine.h"
#include "Interfaces/IPluginManager.h"
#include "Misc/FileHelper.h"
#include "Misc/Paths.h"
#include "Dom/JsonObject.h"
#include "Dom/JsonValue.h"
#include "Serialization/JsonReader.h"
#include "Serialization/JsonSerializer.h"
#include "SMCPWizard.h"
#define LOCTEXT_NAMESPACE "UEBlueprintMCPEditor"
@ -33,6 +41,42 @@ const TCHAR* MCPZoneCommentText = TEXT("MCP Zone");
const TCHAR* LegacyMCPZoneCommentText = TEXT("MCP Draft Zone");
const FName MCPWizardTabId(TEXT("MCPSetupWizard"));
FString MCPPluginDir()
{
TSharedPtr<IPlugin> Plugin = IPluginManager::Get().FindPlugin(TEXT("UEBlueprintMCP"));
return Plugin.IsValid() ? FPaths::ConvertRelativePathToFull(Plugin->GetBaseDir()) : FString();
}
// Reads the shipped tool catalogue (tools.json). Returns name + description pairs.
bool MCPReadTools(TArray<TPair<FString, FString>>& Out)
{
const FString Dir = MCPPluginDir();
if (Dir.IsEmpty())
{
return false;
}
FString Json;
if (!FFileHelper::LoadFileToString(Json, *(Dir / TEXT("tools.json"))))
{
return false;
}
TArray<TSharedPtr<FJsonValue>> Items;
TSharedRef<TJsonReader<>> Reader = TJsonReaderFactory<>::Create(Json);
if (!FJsonSerializer::Deserialize(Reader, Items))
{
return false;
}
for (const TSharedPtr<FJsonValue>& Item : Items)
{
const TSharedPtr<FJsonObject> Obj = Item.IsValid() ? Item->AsObject() : nullptr;
if (Obj.IsValid())
{
Out.Emplace(Obj->GetStringField(TEXT("name")), Obj->GetStringField(TEXT("description")));
}
}
return true;
}
bool IsMCPZoneComment(const UEdGraphNode* Node)
{
const UEdGraphNode_Comment* CommentNode = Cast<UEdGraphNode_Comment>(Node);
@ -126,6 +170,12 @@ void FUEBlueprintMCPEditorModule::StartupModule()
}
void FUEBlueprintMCPEditorModule::NotifyBridgeStatus()
{
// Startup check: ping and show a one-off notification.
PingRc(true);
}
void FUEBlueprintMCPEditorModule::PingRc(bool bNotify)
{
const FString Url = TEXT("http://127.0.0.1:30010/remote/info");
TSharedRef<IHttpRequest> Request = FHttpModule::Get().CreateRequest();
@ -133,9 +183,14 @@ void FUEBlueprintMCPEditorModule::NotifyBridgeStatus()
Request->SetURL(Url);
Request->SetTimeout(3.0f);
Request->OnProcessRequestComplete().BindLambda(
[](FHttpRequestPtr Req, FHttpResponsePtr Resp, bool bSucceeded)
[this, bNotify](FHttpRequestPtr Req, FHttpResponsePtr Resp, bool bSucceeded)
{
const bool bOk = bSucceeded && Resp.IsValid() && Resp->GetResponseCode() == 200;
CachedRcStatus = bOk ? EMcpRcStatus::Up : EMcpRcStatus::Down;
if (!bNotify)
{
return;
}
FNotificationInfo Info(bOk
? LOCTEXT("MCPBridgeUp", "UE Blueprint MCP bridge ready (Remote Control :30010)")
: LOCTEXT("MCPBridgeDown", "UE Blueprint MCP bridge NOT reachable on :30010 — check Remote Control plugin"));
@ -214,11 +269,137 @@ TSharedRef<SDockTab> FUEBlueprintMCPEditorModule::SpawnWizardTab(const FSpawnTab
];
}
void FUEBlueprintMCPEditorModule::RegisterMCPToolbarButton()
{
UToolMenu* Toolbar = UToolMenus::Get()->ExtendMenu("LevelEditor.LevelEditorToolBar.User");
if (!Toolbar)
{
return;
}
FToolMenuSection& Section = Toolbar->FindOrAddSection("MCP");
FToolMenuEntry Entry = FToolMenuEntry::InitComboButton(
"MCPMenu",
FUIAction(),
FNewToolMenuChoice(FNewToolMenuDelegate::CreateRaw(this, &FUEBlueprintMCPEditorModule::BuildMCPStatusMenu)),
LOCTEXT("MCPToolbarLabel", "MCP"),
LOCTEXT("MCPToolbarTip", "UE Blueprint MCP — status, active tools and settings"),
FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.Settings"));
Section.AddEntry(Entry);
}
void FUEBlueprintMCPEditorModule::BuildMCPStatusMenu(UToolMenu* Menu)
{
// Kick a fresh (silent) ping so the next open reflects current state.
PingRc(false);
// --- Status ---
{
FToolMenuSection& Sec = Menu->FindOrAddSection("MCPStatus", LOCTEXT("MCPStatusHdr", "Status"));
FText StatusText;
FSlateIcon StatusIcon;
switch (CachedRcStatus)
{
case EMcpRcStatus::Up:
StatusText = LOCTEXT("RcUp", "Remote Control: connected (:30010)");
StatusIcon = FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.SuccessWithColor");
break;
case EMcpRcStatus::Down:
StatusText = LOCTEXT("RcDown", "Remote Control: not reachable");
StatusIcon = FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.ErrorWithColor");
break;
default:
StatusText = LOCTEXT("RcUnknown", "Remote Control: checking…");
StatusIcon = FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.WarningWithColor");
break;
}
Sec.AddMenuEntry("MCPRcStatus", StatusText,
LOCTEXT("RcStatusTip", "Click to re-check the Remote Control bridge."),
StatusIcon,
FUIAction(FExecuteAction::CreateRaw(this, &FUEBlueprintMCPEditorModule::PingRc, false)));
Sec.AddMenuEntry("MCPStartRC",
LOCTEXT("StartRC", "Start Remote Control server"),
LOCTEXT("StartRCTip", "Run WebControl.StartServer and enable it on startup."),
FSlateIcon(),
FUIAction(FExecuteAction::CreateLambda([this]()
{
if (GEngine)
{
GEngine->Exec(nullptr, TEXT("WebControl.EnableServerOnStartup 1"));
GEngine->Exec(nullptr, TEXT("WebControl.StartServer"));
}
PingRc(false);
})));
}
// --- Tools ---
{
TArray<TPair<FString, FString>> Tools;
MCPReadTools(Tools);
FToolMenuSection& Sec = Menu->FindOrAddSection("MCPTools", LOCTEXT("MCPToolsHdr", "Tools"));
Sec.AddSubMenu("MCPToolsList",
FText::Format(LOCTEXT("ActiveTools", "Active tools ({0})"), FText::AsNumber(Tools.Num())),
LOCTEXT("ActiveToolsTip", "The MCP tools this server exposes to your client."),
FNewToolMenuDelegate::CreateRaw(this, &FUEBlueprintMCPEditorModule::BuildToolsSubMenu),
false,
FSlateIcon());
}
// --- Settings ---
{
FToolMenuSection& Sec = Menu->FindOrAddSection("MCPSettings", LOCTEXT("MCPSettingsHdr", "Settings"));
Sec.AddMenuEntry("MCPOpenWizard",
LOCTEXT("OpenWizardEntry", "Open Setup Wizard…"),
LOCTEXT("OpenWizardEntryTip", "Remote Control, API keys and the full tool list."),
FSlateIcon(FAppStyle::GetAppStyleSetName(), "Icons.Settings"),
FUIAction(FExecuteAction::CreateLambda([]()
{
FGlobalTabmanager::Get()->TryInvokeTab(MCPWizardTabId);
})));
}
}
void FUEBlueprintMCPEditorModule::BuildToolsSubMenu(UToolMenu* Menu)
{
TArray<TPair<FString, FString>> Tools;
if (!MCPReadTools(Tools) || Tools.Num() == 0)
{
FToolMenuSection& Sec = Menu->FindOrAddSection("MCPToolsNone");
Sec.AddMenuEntry("MCPNoTools",
LOCTEXT("NoTools", "tools.json not found"),
LOCTEXT("NoToolsTip", "Run `npm run dump-tools` in the plugin folder to generate the catalogue."),
FSlateIcon(),
FUIAction(FExecuteAction::CreateLambda([]() {}), FCanExecuteAction::CreateLambda([]() { return false; })));
return;
}
FToolMenuSection& Sec = Menu->FindOrAddSection("MCPToolsItems");
for (const TPair<FString, FString>& Tool : Tools)
{
// First line of the description as the tooltip — keeps it readable.
FString Tip = Tool.Value;
int32 Dot;
if (Tip.FindChar(TEXT('.'), Dot) && Dot > 20)
{
Tip = Tip.Left(Dot + 1);
}
Sec.AddMenuEntry(FName(*Tool.Key),
FText::FromString(Tool.Key),
FText::FromString(Tip),
FSlateIcon(),
FUIAction(FExecuteAction::CreateLambda([]() {})));
}
}
void FUEBlueprintMCPEditorModule::RegisterMenus()
{
FToolMenuOwnerScoped OwnerScoped(this);
RegisterWizardTabAndMenu();
RegisterMCPToolbarButton();
UToolMenu* Toolbar = UToolMenus::Get()->ExtendMenu("AssetEditor.BlueprintEditor.ToolBar");
FToolMenuSection& Section = Toolbar->FindOrAddSection("Settings");

View File

@ -17,8 +17,14 @@ public:
private:
friend class FMCPZoneInputProcessor;
enum class EMcpRcStatus : uint8 { Unknown, Up, Down };
void RegisterMenus();
void RegisterWizardTabAndMenu();
void RegisterMCPToolbarButton();
void BuildMCPStatusMenu(class UToolMenu* Menu);
void BuildToolsSubMenu(class UToolMenu* Menu);
void PingRc(bool bNotify);
TSharedRef<class SDockTab> SpawnWizardTab(const class FSpawnTabArgs& Args);
void NotifyBridgeStatus();
void ToggleMCPZoneMode(TWeakPtr<FBlueprintEditor> BlueprintEditor);
@ -29,6 +35,7 @@ private:
bool bMCPZoneModeActive = false;
bool bWizardTabRegistered = false;
EMcpRcStatus CachedRcStatus = EMcpRcStatus::Unknown;
TWeakPtr<FBlueprintEditor> ActiveMCPZoneEditor;
TSharedPtr<IInputProcessor> MCPZoneInputProcessor;
};