type_of.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * 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/.
 */
 
//
// Created by alex2 on 02.01.2021.
//
 
#pragma once
 
#include <AUI/Util/kAUI.h>
#include <AUI/View/AView.h>
#include <AUI/ASS/AAssHelper.h>
 
#include "hovered.h"
#include "activated.h"
#include "focused.h"
#include "disabled.h"
 
namespace ass {
 
   namespace detail {
       template<typename T>
       struct Type : IAssSubSelector {
           static_assert(std::is_polymorphic_v<T>, "Your type is not polymorphic! Please define at least virtual "
                                                   "destructor for using type_of (t) style selector "
                                                   "(see https://en.cppreference.com/w/cpp/language/object#Polymorphic_objects)");
       public:
           bool isPossiblyApplicable(AView* view) override {
               return dynamic_cast<T*>(view) != nullptr;
           }
 
       };
   }
 
   template<typename T>
   struct type_of: detail::Type<T> {
   public:
 
       using hover = ass::hovered<detail::Type<T>>;
       using active = ass::activated<detail::Type<T>>;
       using focus = ass::activated<detail::Type<T>>;
       using disabled = ass::disabled<detail::Type<T>>;
   };

   template<typename T>
   using t = type_of<T>;
}

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