Platform: Add MessageBox

include/Nazara/Platform/Enums.hpp

@@ -20,6 +20,45 @@ namespace Nz
 		Max = Text
 	};
 
+	enum class MessageBoxButtonRole
+	{
+		Accept,
+		None,
+		Reject,
+
+		Max = Reject
+	};
+
+	enum class MessageBoxType
+	{
+		Info,
+		Error,
+		Warning,
+
+		Max = Warning
+	};
+
+	enum class MessageBoxStandardButton
+	{
+		Abort,
+		Apply,
+		Cancel,
+		Close,
+		Discard,
+		Ignore,
+		No,
+		NoToAll,
+		Ok,
+		Reset,
+		Retry,
+		Save,
+		SaveAll,
+		Yes,
+		YesToAll,
+
+		Max = YesToAll
+	};
+
 	enum class SystemCursor
 	{
 		Crosshair,

include/Nazara/Platform/MessageBox.hpp

@@ -0,0 +1,79 @@
+// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Platform module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_PLATFORM_MESSAGEBOX_HPP
+#define NAZARA_PLATFORM_MESSAGEBOX_HPP
+
+#include <NazaraUtils/Prerequisites.hpp>
+#include <Nazara/Core/Color.hpp>
+#include <Nazara/Platform/Config.hpp>
+#include <Nazara/Platform/Enums.hpp>
+#include <NazaraUtils/Result.hpp>
+#include <string>
+#include <vector>
+
+namespace Nz
+{
+	class Window;
+
+	class NAZARA_PLATFORM_API MessageBox
+	{
+		public:
+			struct ColorScheme;
+
+			inline MessageBox(MessageBoxType type, std::string title, std::string message);
+			MessageBox(const MessageBox&) = delete;
+			MessageBox(MessageBox&&) = delete;
+			~MessageBox() = default;
+
+			inline void AddButton(int id, std::string text, MessageBoxButtonRole role = MessageBoxButtonRole::None);
+			void AddButton(int id, MessageBoxStandardButton standardButton);
+
+			inline const ColorScheme* GetColorSchemeOverride() const;
+			inline const std::string& GetMessage() const;
+			inline const std::string& GetTitle() const;
+
+			inline void OverrideColorScheme(const ColorScheme& colorScheme);
+
+			inline void ResetColorScheme();
+
+			Result<int, const char*> Show(Window* parent = nullptr) const;
+
+			inline void UpdateMessage(std::string message);
+			inline void UpdateTitle(std::string title);
+			inline void UpdateType(MessageBoxType type);
+
+			MessageBox& operator=(const MessageBox&) = delete;
+			MessageBox& operator=(MessageBox&&) = delete;
+
+			struct ColorScheme
+			{
+				Color backgroundColor = Color::White();
+				Color textColor = Color::Black();
+				Color buttonBackgroundColor = Color::Gray();
+				Color buttonBorderColor = Color::Black();
+				Color buttonSelectedColor = Color::Blue();
+			};
+
+		private:
+			struct ButtonData
+			{
+				MessageBoxButtonRole role;
+				std::string text;
+				int buttonId;
+			};
+
+			std::optional<ColorScheme> m_colorSchemeOverride;
+			std::string m_message;
+			std::string m_title;
+			std::vector<ButtonData> m_buttons;
+			MessageBoxType m_type;
+	};
+}
+
+#include <Nazara/Platform/MessageBox.inl>
+
+#endif // NAZARA_PLATFORM_MESSAGEBOX_HPP

include/Nazara/Platform/MessageBox.inl

@@ -0,0 +1,70 @@
+// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Platform module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <NazaraUtils/Algorithm.hpp>
+#include <Nazara/Platform/Debug.hpp>
+
+namespace Nz
+{
+	inline MessageBox::MessageBox(MessageBoxType type, std::string title, std::string message) :
+	m_message(std::move(message)),
+	m_title(std::move(title)),
+	m_type(type)
+	{
+	}
+
+	inline void MessageBox::AddButton(int id, std::string text, MessageBoxButtonRole role)
+	{
+		m_buttons.push_back({
+			.role = role,
+			.text = std::move(text),
+			.buttonId = id
+		});
+	}
+
+	inline auto MessageBox::GetColorSchemeOverride() const -> const ColorScheme*
+	{
+		if (!m_colorSchemeOverride)
+			return nullptr;
+
+		return &m_colorSchemeOverride.value();
+	}
+
+	inline const std::string& MessageBox::GetMessage() const
+	{
+		return m_message;
+	}
+
+	inline const std::string& Nz::MessageBox::GetTitle() const
+	{
+		return m_title;
+	}
+
+	inline void MessageBox::OverrideColorScheme(const ColorScheme& colorScheme)
+	{
+		m_colorSchemeOverride = colorScheme;
+	}
+
+	inline void MessageBox::ResetColorScheme()
+	{
+		m_colorSchemeOverride = std::nullopt;
+	}
+
+	inline void MessageBox::UpdateMessage(std::string message)
+	{
+		m_message = std::move(message);
+	}
+
+	inline void MessageBox::UpdateTitle(std::string title)
+	{
+		m_title = std::move(title);
+	}
+
+	inline void MessageBox::UpdateType(MessageBoxType type)
+	{
+		m_type = type;
+	}
+}
+
+#include <Nazara/Platform/DebugOff.hpp>

include/Nazara/Platform/Window.hpp

@@ -32,6 +32,7 @@ namespace Nz
 	{
 		friend WindowImpl;
 		friend class InputImpl;
+		friend class MessageBox;
 		friend class Mouse;
 		friend class Platform;