mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-25 22:21:14 +00:00
92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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#include <stratosphere/os.hpp>
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namespace ams::ddsf {
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class EventHandlerManager;
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class IEventHandler {
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NON_COPYABLE(IEventHandler);
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NON_MOVEABLE(IEventHandler);
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friend class EventHandlerManager;
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private:
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os::WaitableHolderType holder;
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uintptr_t user_data;
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bool is_initialized;
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bool is_registered;
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private:
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void Link(os::WaitableManagerType *manager) {
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AMS_ASSERT(this->IsInitialized());
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AMS_ASSERT(!this->IsRegistered());
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AMS_ASSERT(manager != nullptr);
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os::LinkWaitableHolder(manager, std::addressof(this->holder));
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}
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void Unlink() {
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AMS_ASSERT(this->IsInitialized());
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AMS_ASSERT(this->IsRegistered());
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os::UnlinkWaitableHolder(std::addressof(this->holder));
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}
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static IEventHandler &ToEventHandler(os::WaitableHolderType *holder) {
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AMS_ASSERT(holder != nullptr);
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auto &event_handler = *reinterpret_cast<IEventHandler *>(os::GetWaitableHolderUserData(holder));
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AMS_ASSERT(event_handler.IsInitialized());
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return event_handler;
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}
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public:
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IEventHandler() : holder(), user_data(0), is_initialized(false), is_registered(false) { /* ... */ }
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~IEventHandler() {
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if (this->IsRegistered()) {
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this->Unlink();
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}
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if (this->IsInitialized()) {
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this->Finalize();
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}
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}
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bool IsInitialized() const { return this->is_initialized; }
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bool IsRegistered() const { return this->is_registered; }
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uintptr_t GetUserData() const { return this->user_data; }
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void SetUserData(uintptr_t d) { this->user_data = d; }
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template<typename T>
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void Initialize(T *object) {
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AMS_ASSERT(object != nullptr);
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AMS_ASSERT(!this->IsInitialized());
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os::InitializeWaitableHolder(std::addressof(this->holder), object);
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os::SetWaitableHolderUserData(std::addressof(this->holder), reinterpret_cast<uintptr_t>(this));
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this->is_initialized = true;
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this->is_registered = false;
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}
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void Finalize() {
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AMS_ASSERT(this->IsInitialized());
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AMS_ASSERT(!this->IsRegistered());
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os::FinalizeWaitableHolder(std::addressof(this->holder));
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this->is_initialized = false;
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this->is_registered = false;
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}
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protected:
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virtual void HandleEvent() = 0;
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};
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}
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