2 files changed, 137 insertions, 0 deletions

diff --git a/src/core/hle/service/am/applets/applets.cpp b/src/core/hle/service/am/applets/applets.cpp
index a6064c63f..7f70b10df 100644
--- a/src/core/hle/service/am/applets/applets.cpp
+++ b/src/core/hle/service/am/applets/applets.cpp
@@ -5,11 +5,21 @@
 #include <cstring>
 #include "common/assert.h"
 #include "core/core.h"
+#include "core/frontend/applets/error.h"
+#include "core/frontend/applets/general_frontend.h"
+#include "core/frontend/applets/profile_select.h"
+#include "core/frontend/applets/software_keyboard.h"
+#include "core/frontend/applets/web_browser.h"
 #include "core/hle/kernel/readable_event.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/applets.h"
+#include "core/hle/service/am/applets/error.h"
+#include "core/hle/service/am/applets/general_backend.h"
+#include "core/hle/service/am/applets/profile_select.h"
+#include "core/hle/service/am/applets/software_keyboard.h"
+#include "core/hle/service/am/applets/web_browser.h"
 
 namespace Service::AM::Applets {
 
@@ -111,4 +121,76 @@ void Applet::Initialize() {
     initialized = true;
 }
 
+AppletManager::AppletManager() = default;
+
+AppletManager::~AppletManager() = default;
+
+void AppletManager::SetAppletFrontendSet(AppletFrontendSet set) {
+    if (set.error != nullptr)
+        frontend.error = std::move(set.error);
+    if (set.photo_viewer != nullptr)
+        frontend.photo_viewer = std::move(set.photo_viewer);
+    if (set.profile_select != nullptr)
+        frontend.profile_select = std::move(set.profile_select);
+    if (set.software_keyboard != nullptr)
+        frontend.software_keyboard = std::move(set.software_keyboard);
+    if (set.web_browser != nullptr)
+        frontend.web_browser = std::move(set.web_browser);
+}
+
+void AppletManager::SetDefaultAppletFrontendSet() {
+    frontend.error = std::make_unique<Core::Frontend::DefaultErrorApplet>();
+    frontend.photo_viewer = std::make_unique<Core::Frontend::DefaultPhotoViewerApplet>();
+    frontend.profile_select = std::make_unique<Core::Frontend::DefaultProfileSelectApplet>();
+    frontend.software_keyboard = std::make_unique<Core::Frontend::DefaultSoftwareKeyboardApplet>();
+    frontend.web_browser = std::make_unique<Core::Frontend::DefaultWebBrowserApplet>();
+}
+
+void AppletManager::SetDefaultAppletsIfMissing() {
+    if (frontend.error == nullptr) {
+        frontend.error = std::make_unique<Core::Frontend::DefaultErrorApplet>();
+    }
+
+    if (frontend.photo_viewer == nullptr) {
+        frontend.photo_viewer = std::make_unique<Core::Frontend::DefaultPhotoViewerApplet>();
+    }
+
+    if (frontend.profile_select == nullptr) {
+        frontend.profile_select = std::make_unique<Core::Frontend::DefaultProfileSelectApplet>();
+    }
+
+    if (frontend.software_keyboard == nullptr) {
+        frontend.software_keyboard =
+            std::make_unique<Core::Frontend::DefaultSoftwareKeyboardApplet>();
+    }
+
+    if (frontend.web_browser == nullptr) {
+        frontend.web_browser = std::make_unique<Core::Frontend::DefaultWebBrowserApplet>();
+    }
+}
+
+void AppletManager::ClearAll() {
+    frontend = {};
+}
+
+std::shared_ptr<Applet> AppletManager::GetApplet(AppletId id) const {
+    switch (id) {
+    case AppletId::Error:
+        return std::make_shared<Error>(*frontend.error);
+    case AppletId::ProfileSelect:
+        return std::make_shared<ProfileSelect>(*frontend.profile_select);
+    case AppletId::SoftwareKeyboard:
+        return std::make_shared<SoftwareKeyboard>(*frontend.software_keyboard);
+    case AppletId::PhotoViewer:
+        return std::make_shared<PhotoViewer>(*frontend.photo_viewer);
+    case AppletId::LibAppletOff:
+        return std::make_shared<WebBrowser>(*frontend.web_browser);
+    default:
+        UNIMPLEMENTED_MSG(
+            "No backend implementation exists for applet_id={:02X}! Falling back to stub applet.",
+            static_cast<u8>(id));
+        return std::make_shared<StubApplet>();
+    }
+}
+
 } // namespace Service::AM::Applets
diff --git a/src/core/hle/service/am/applets/applets.h b/src/core/hle/service/am/applets/applets.h
index 37424c379..7f932672c 100644
--- a/src/core/hle/service/am/applets/applets.h
+++ b/src/core/hle/service/am/applets/applets.h
@@ -12,12 +12,43 @@
 
 union ResultCode;
 
+namespace Core::Frontend {
+class ErrorApplet;
+class PhotoViewerApplet;
+class ProfileSelectApplet;
+class SoftwareKeyboardApplet;
+class WebBrowserApplet;
+} // namespace Core::Frontend
+
 namespace Service::AM {
 
 class IStorage;
 
 namespace Applets {
 
+enum class AppletId : u32 {
+    OverlayDisplay = 0x02,
+    QLaunch = 0x03,
+    Starter = 0x04,
+    Auth = 0x0A,
+    Cabinet = 0x0B,
+    Controller = 0x0C,
+    DataErase = 0x0D,
+    Error = 0x0E,
+    NetConnect = 0x0F,
+    ProfileSelect = 0x10,
+    SoftwareKeyboard = 0x11,
+    MiiEdit = 0x12,
+    LibAppletWeb = 0x13,
+    LibAppletShop = 0x14,
+    PhotoViewer = 0x15,
+    Settings = 0x16,
+    LibAppletOff = 0x17,
+    LibAppletWhitelisted = 0x18,
+    LibAppletAuth = 0x19,
+    MyPage = 0x1A,
+};
+
 class AppletDataBroker final {
 public:
     AppletDataBroker();
@@ -105,5 +136,29 @@ protected:
     bool initialized = false;
 };
 
+struct AppletFrontendSet {
+    std::unique_ptr<Core::Frontend::ErrorApplet> error;
+    std::unique_ptr<Core::Frontend::PhotoViewerApplet> photo_viewer;
+    std::unique_ptr<Core::Frontend::ProfileSelectApplet> profile_select;
+    std::unique_ptr<Core::Frontend::SoftwareKeyboardApplet> software_keyboard;
+    std::unique_ptr<Core::Frontend::WebBrowserApplet> web_browser;
+};
+
+class AppletManager {
+public:
+    AppletManager();
+    ~AppletManager();
+
+    void SetAppletFrontendSet(AppletFrontendSet set);
+    void SetDefaultAppletFrontendSet();
+    void SetDefaultAppletsIfMissing();
+    void ClearAll();
+
+    std::shared_ptr<Applet> GetApplet(AppletId id) const;
+
+private:
+    AppletFrontendSet frontend;
+};
+
 } // namespace Applets
 } // namespace Service::AM