Selected.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/.
 */
 
#pragma once
 
#include <AUI/Util/ADataBinding.h>
#include "AAssSelector.h"
 
namespace ass {
   class ISelectable {
   friend struct Selected;
   protected:
       virtual bool selectableIsSelectedImpl() = 0;
   };

   struct Selected: IAssSubSelector {
   private:
       _unique<IAssSubSelector> mWrapped;
 
   public:
       template<typename T>
       Selected(T value): mWrapped(new T(std::move(value))) {}
 
 
       bool isPossiblyApplicable(AView* view) override {
           return mWrapped->isPossiblyApplicable(view) && dynamic_cast<ISelectable*>(view);
       }
 
       bool isStateApplicable(AView* view) override {
           if (!mWrapped->isStateApplicable(view))
               return false;
 
           if (auto c = dynamic_cast<ISelectable*>(view)) {
               return c->selectableIsSelectedImpl();
           }
           return false;
       }
 
       void setupConnections(AView* view, const _<AAssHelper>& helper) override {
           IAssSubSelector::setupConnections(view, helper);
           mWrapped->setupConnections(view, helper);
 
           view->customCssPropertyChanged.clearAllOutgoingConnectionsWith(helper.get());
           AObject::connect(view->customCssPropertyChanged, slot(helper)::onInvalidateStateAss);
       }
   };
}

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