[nostalgia/studio] Start on ImGui version of Studio

src/nostalgia/studio/filedialogmanager.hpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2016 - 2021 gary@drinkingtea.net
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <ox/event/signal.hpp>
+#include <ox/std/string.hpp>
+
+#include <nostalgia/core/context.hpp>
+
+#include "lib/filedialog.hpp"
+#include "lib/task.hpp"
+
+namespace nostalgia {
+
+class FileDialogManager : public nostalgia::studio::Task {
+	private:
+		enum class UpdateProjectPathState {
+				None,
+				EnableSystemCursor,
+				RunFileDialog,
+				Start = EnableSystemCursor,
+		} m_state = UpdateProjectPathState::Start;
+
+	public:
+		FileDialogManager() noexcept = default;
+
+		template<class... Args>
+		explicit FileDialogManager(Args ...args) noexcept;
+
+		~FileDialogManager() noexcept override = default;
+
+		nostalgia::studio::TaskState update(nostalgia::core::Context *ctx) noexcept final;
+
+		// signals
+		ox::Signal<ox::Error(const ox::String &)> pathChosen;
+
+};
+
+template<class... Args>
+FileDialogManager::FileDialogManager(Args ...args) noexcept {
+	pathChosen.connect(args...);
+}
+
+}