cpp.react/include/react/detail/ObserverBase.h at master · lineCode/cpp.react · GitHub

History

79 lines (61 loc) · 2.01 KB

Raw

// Copyright Sebastian Jeckel 2014.

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#ifndef REACT_DETAIL_OBSERVERBASE_H_INCLUDED

#define REACT_DETAIL_OBSERVERBASE_H_INCLUDED

#pragma once

#include "react/detail/Defs.h"

#include <memory>

#include <vector>

#include <utility>

#include "IReactiveNode.h"

/***************************************/ REACT_IMPL_BEGIN /**************************************/

///////////////////////////////////////////////////////////////////////////////////////////////////

/// IObserver

///////////////////////////////////////////////////////////////////////////////////////////////////

class IObserver

{

public:

virtual ~IObserver() {}

virtual void UnregisterSelf() = 0;

private:

virtual void detachObserver() = 0;

template <typename D>

friend class Observable;

};

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Observable

///////////////////////////////////////////////////////////////////////////////////////////////////

template <typename D>

class Observable

{

public:

Observable() = default;

~Observable()

{

for (const auto& p : observers_)

if (p != nullptr)

p->detachObserver();

}

void RegisterObserver(std::unique_ptr<IObserver>&& obsPtr)

{

observers_.push_back(std::move(obsPtr));

}

void UnregisterObserver(IObserver* rawObsPtr)

{

for (auto it = observers_.begin(); it != observers_.end(); ++it)

{

if (it->get() == rawObsPtr)

{

it->get()->detachObserver();

observers_.erase(it);

break;

}

private:

std::vector<std::unique_ptr<IObserver>> observers_;

};

/****************************************/ REACT_IMPL_END /***************************************/

#endif // REACT_DETAIL_OBSERVERBASE_H_INCLUDED

cpp.react/include/react/detail/ObserverBase.h at master · lineCode/cpp.react · GitHub

Expand file tree

Breadcrumbs

ObserverBase.h

Latest commit

History

Breadcrumbs

ObserverBase.h

File metadata and controls