[Base/UI] Android globals initialization + WindowedAppContext parts

src/xenia/ui/window_android.cc

@@ -0,0 +1,54 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2021 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/ui/window_android.h"
+
+#include <memory>
+#include <utility>
+
+#include "xenia/base/assert.h"
+#include "xenia/ui/windowed_app_context_android.h"
+
+namespace xe {
+namespace ui {
+
+std::unique_ptr<Window> Window::Create(WindowedAppContext& app_context,
+                                       const std::string& title) {
+  // The window is a proxy between the main activity and Xenia, so there can be
+  // only one for an activity.
+  AndroidWindowedAppContext& android_app_context =
+      static_cast<AndroidWindowedAppContext&>(app_context);
+  AndroidWindow* current_activity_window =
+      android_app_context.GetActivityWindow();
+  assert_null(current_activity_window);
+  if (current_activity_window) {
+    return nullptr;
+  }
+  auto window = std::make_unique<AndroidWindow>(app_context, title);
+  android_app_context.SetActivityWindow(window.get());
+  return std::move(window);
+}
+
+AndroidWindow::~AndroidWindow() {
+  AndroidWindowedAppContext& android_app_context =
+      static_cast<AndroidWindowedAppContext&>(app_context());
+  if (android_app_context.GetActivityWindow() == this) {
+    android_app_context.SetActivityWindow(nullptr);
+  }
+}
+
+std::unique_ptr<ui::MenuItem> MenuItem::Create(Type type,
+                                               const std::string& text,
+                                               const std::string& hotkey,
+                                               std::function<void()> callback) {
+  return std::make_unique<AndroidMenuItem>(type, text, hotkey, callback);
+}
+
+}  // namespace ui
+}  // namespace xe