169 lines
4.0 KiB
C++
169 lines
4.0 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/Error.hpp>
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#include <utility>
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#include <Nazara/Core/Debug.hpp>
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template<typename... Args>
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NzSignal<Args...>::NzSignal(NzSignal&& signal)
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{
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operator=(std::move(signal));
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}
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template<typename... Args>
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void NzSignal<Args...>::Clear()
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{
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m_slots.clear();
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}
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template<typename... Args>
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typename NzSignal<Args...>::Connection NzSignal<Args...>::Connect(const Callback& func)
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{
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return Connect(Callback(func));
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}
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template<typename... Args>
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typename NzSignal<Args...>::Connection NzSignal<Args...>::Connect(Callback&& func)
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{
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NazaraAssert(func, "Invalid function");
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auto tempPtr = std::make_shared<Slot>(this);
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tempPtr->callback = std::move(func);
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tempPtr->index = m_slots.size();
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m_slots.emplace_back(std::move(tempPtr));
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return Connection(m_slots.back());
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}
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template<typename... Args>
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template<typename O>
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typename NzSignal<Args...>::Connection NzSignal<Args...>::Connect(O& object, void (O::*method) (Args...))
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{
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return Connect([&object, method] (Args&&... args)
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{
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return (object .* method) (std::forward<Args>(args)...);
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});
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}
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template<typename... Args>
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template<typename O>
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typename NzSignal<Args...>::Connection NzSignal<Args...>::Connect(O* object, void (O::*method)(Args...))
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{
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return Connect([object, method] (Args&&... args)
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{
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return (object ->* method) (std::forward<Args>(args)...);
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});
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}
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template<typename... Args>
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void NzSignal<Args...>::operator()(Args... args) const
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{
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for (const SlotPtr& slot : m_slots)
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slot->callback(args...);
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}
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template<typename... Args>
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NzSignal<Args...>& NzSignal<Args...>::operator=(NzSignal&& signal)
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{
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m_slots = std::move(signal.m_slots);
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// We need to update the signal pointer inside of each slot
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for (SlotPtr& slot : m_slots)
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slot->signal = this;
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return *this;
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}
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template<typename... Args>
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void NzSignal<Args...>::Disconnect(const SlotPtr& slot)
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{
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NazaraAssert(slot, "Invalid slot pointer");
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NazaraAssert(slot->index < m_slots.size(), "Invalid slot index");
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// "Swap this slot with the last one and pop" idiom
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// This will preserve slot indexes
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SlotPtr& current = m_slots[slot->index];
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std::swap(current, m_slots.back());
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m_slots.pop_back();
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current->index = slot->index; //< Update the moved slot index
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}
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template<typename... Args>
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NzSignal<Args...>::Connection::Connection(const SlotPtr& slot) :
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m_ptr(slot)
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{
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}
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template<typename... Args>
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void NzSignal<Args...>::Connection::Disconnect()
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{
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if (SlotPtr ptr = m_ptr.lock())
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ptr->signal->Disconnect(ptr);
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}
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template<typename... Args>
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bool NzSignal<Args...>::Connection::IsConnected() const
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{
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return !m_ptr.expired();
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}
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template<typename... Args>
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NzSignal<Args...>::ConnectionGuard::ConnectionGuard(const Connection& connection) :
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m_connection(connection)
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{
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}
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template<typename... Args>
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NzSignal<Args...>::ConnectionGuard::ConnectionGuard(Connection&& connection) :
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m_connection(std::move(connection))
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{
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}
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template<typename... Args>
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NzSignal<Args...>::ConnectionGuard::~ConnectionGuard()
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{
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m_connection.Disconnect();
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}
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template<typename... Args>
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typename NzSignal<Args...>::Connection& NzSignal<Args...>::ConnectionGuard::GetConnection()
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{
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return m_connection;
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}
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template<typename... Args>
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typename NzSignal<Args...>::ConnectionGuard& NzSignal<Args...>::ConnectionGuard::operator=(const Connection& connection)
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{
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m_connection.Disconnect();
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m_connection = connection;
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return *this;
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}
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template<typename... Args>
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typename NzSignal<Args...>::ConnectionGuard& NzSignal<Args...>::ConnectionGuard::operator=(Connection&& connection)
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{
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m_connection.Disconnect();
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m_connection = std::move(connection);
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return *this;
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}
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template<typename... Args>
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typename NzSignal<Args...>::ConnectionGuard& NzSignal<Args...>::ConnectionGuard::operator=(ConnectionGuard&& connection)
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{
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m_connection.Disconnect();
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m_connection = std::move(connection.m_connection);
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return *this;
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}
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#include <Nazara/Core/DebugOff.hpp>
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