From f6e229505583d37c8320f3a01b3f86018fcde22b Mon Sep 17 00:00:00 2001
From: Zach Hilman <zachhilman@gmail.com>
Date: Mon, 11 Mar 2019 19:38:53 -0400
Subject: [PATCH] general_backend: Move StubApplet and add backend PhotoViewer

---
 .../{stub_applet.cpp => general_backend.cpp}  | 55 ++++++++++++++++++-
 .../hle/service/am/applets/general_backend.h  | 48 ++++++++++++++++
 2 files changed, 102 insertions(+), 1 deletion(-)
 rename src/core/hle/service/am/applets/{stub_applet.cpp => general_backend.cpp} (60%)
 create mode 100644 src/core/hle/service/am/applets/general_backend.h

diff --git a/src/core/hle/service/am/applets/stub_applet.cpp b/src/core/hle/service/am/applets/general_backend.cpp
similarity index 60%
rename from src/core/hle/service/am/applets/stub_applet.cpp
rename to src/core/hle/service/am/applets/general_backend.cpp
index ed166b87d1..18ab0718be 100644
--- a/src/core/hle/service/am/applets/stub_applet.cpp
+++ b/src/core/hle/service/am/applets/general_backend.cpp
@@ -6,9 +6,12 @@
 
 #include "common/hex_util.h"
 #include "common/logging/log.h"
+#include "core/core.h"
+#include "core/frontend/applets/general_frontend.h"
+#include "core/hle/kernel/process.h"
 #include "core/hle/result.h"
 #include "core/hle/service/am/am.h"
-#include "core/hle/service/am/applets/stub_applet.h"
+#include "core/hle/service/am/applets/general_backend.h"
 
 namespace Service::AM::Applets {
 
@@ -30,6 +33,55 @@ static void LogCurrentStorage(AppletDataBroker& broker, std::string prefix) {
     }
 }
 
+PhotoViewer::PhotoViewer(const Core::Frontend::PhotoViewerApplet& frontend) : frontend(frontend) {}
+
+PhotoViewer::~PhotoViewer() = default;
+
+void PhotoViewer::Initialize() {
+    Applet::Initialize();
+    complete = false;
+
+    const auto storage = broker.PopNormalDataToApplet();
+    ASSERT(storage != nullptr);
+    const auto data = storage->GetData();
+    ASSERT(!data.empty());
+    mode = static_cast<PhotoViewerAppletMode>(data[0]);
+}
+
+bool PhotoViewer::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode PhotoViewer::GetStatus() const {
+    return RESULT_SUCCESS;
+}
+
+void PhotoViewer::ExecuteInteractive() {
+    UNREACHABLE_MSG("Unexpected interactive applet data.");
+}
+
+void PhotoViewer::Execute() {
+    if (complete)
+        return;
+
+    const auto callback = [this] { ViewFinished(); };
+    switch (mode) {
+    case PhotoViewerAppletMode::CurrentApp:
+        frontend.ShowPhotosForApplication(Core::CurrentProcess()->GetTitleID(), callback);
+        break;
+    case PhotoViewerAppletMode::AllApps:
+        frontend.ShowAllPhotos(callback);
+        break;
+    default:
+        UNIMPLEMENTED_MSG("Unimplemented PhotoViewer applet mode={:02X}!", static_cast<u8>(mode));
+    }
+}
+
+void PhotoViewer::ViewFinished() {
+    broker.PushNormalDataFromApplet(IStorage{{}});
+    broker.SignalStateChanged();
+}
+
 StubApplet::StubApplet() = default;
 
 StubApplet::~StubApplet() = default;
@@ -67,4 +119,5 @@ void StubApplet::Execute() {
     broker.PushInteractiveDataFromApplet(IStorage{std::vector<u8>(0x1000)});
     broker.SignalStateChanged();
 }
+
 } // namespace Service::AM::Applets
diff --git a/src/core/hle/service/am/applets/general_backend.h b/src/core/hle/service/am/applets/general_backend.h
new file mode 100644
index 0000000000..d7313e74ab
--- /dev/null
+++ b/src/core/hle/service/am/applets/general_backend.h
@@ -0,0 +1,48 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/am/applets/applets.h"
+
+namespace Service::AM::Applets {
+
+enum class PhotoViewerAppletMode : u8 {
+    CurrentApp = 0,
+    AllApps = 1,
+};
+
+class PhotoViewer final : public Applet {
+public:
+    PhotoViewer(const Core::Frontend::PhotoViewerApplet& frontend);
+    ~PhotoViewer() override;
+
+    void Initialize() override;
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void ViewFinished();
+
+private:
+    const Core::Frontend::PhotoViewerApplet& frontend;
+    bool complete;
+    PhotoViewerAppletMode mode;
+};
+
+class StubApplet final : public Applet {
+public:
+    StubApplet();
+    ~StubApplet() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+};
+
+} // namespace Service::AM::Applets