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#pragma once
#include "drape_frontend/message_queue.hpp"
#include "drape/pointers.hpp"
#include "std/atomic.hpp"
namespace df
{
class Message;
class MessageAcceptor
{
protected:
MessageAcceptor();
virtual ~MessageAcceptor(){}
virtual void AcceptMessage(ref_ptr<Message> message) = 0;
/// Must be called by subclass on message target thread
bool ProcessSingleMessage(bool waitForMessage = true);
void CancelMessageWaiting();
void CloseQueue();
bool IsInInfinityWaiting() const;
#ifdef DEBUG_MESSAGE_QUEUE
bool IsQueueEmpty() const;
size_t GetQueueSize() const;
#endif
using TFilterMessageFn = function<bool (ref_ptr<Message>)>;
void EnableMessageFiltering(TFilterMessageFn needFilterMessageFn);
void DisableMessageFiltering();
private:
friend class ThreadsCommutator;
void PostMessage(drape_ptr<Message> && message, MessagePriority priority);
MessageQueue m_messageQueue;
atomic<bool> m_infinityWaiting;
TFilterMessageFn m_needFilterMessageFn;
};
} // namespace df
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