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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002-2009 Vincent Richard <vincent@vincent-richard.net>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 3 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library.  Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//

#ifndef VMIME_NET_EVENTS_HPP_INCLUDED
#define VMIME_NET_EVENTS_HPP_INCLUDED


#include <vector>

#include "vmime/utility/path.hpp"


namespace vmime {
namespace net {

class folder;

namespace events {


/** Event about the message count in a folder.
  */

class messageCountEvent
{
public:

	enum Types
	{
		TYPE_ADDED,     /**< New messages have been added. */
		TYPE_REMOVED    /**< Messages have been expunged (renumbering). */
	};


	messageCountEvent(ref <folder> folder, const Types type, const std::vector <int>& nums);

	/** Return the folder in which messages have been added/removed.
	  *
	  * @return folder in which message count changed
	  */
	ref <folder> getFolder() const;

	/** Return the event type.
	  *
	  * @return event type (see messageCountEvent::Types)
	  */
	Types getType() const;

	/** Return the numbers of the messages that have been added/removed.
	  *
	  * @return a list of message numbers
	  */
	const std::vector <int>& getNumbers() const;

	/** Dispatch the event to the specified listener.
	  *
	  * @param listener listener to notify
	  */
	void dispatch(class messageCountListener* listener) const;

private:

	ref <folder> m_folder;
	const Types m_type;
	std::vector <int> m_nums;
};


/** Listener for events about the message count in a folder.
  */

class messageCountListener
{
protected:

	virtual ~messageCountListener() { }

public:

	virtual void messagesAdded(const messageCountEvent& event) = 0;
	virtual void messagesRemoved(const messageCountEvent& event) = 0;
};


/** Event occuring on a message.
  */

class messageChangedEvent
{
public:

	enum Types
	{
		TYPE_FLAGS    // flags changed
	};


	messageChangedEvent(ref <folder> folder, const Types type, const std::vector <int>& nums);

	/** Return the folder in which messages have changed.
	  *
	  * @return folder in which message count changed
	  */
	ref <folder> getFolder() const;

	/** Return the event type.
	  *
	  * @return event type (see messageChangedEvent::Types)
	  */
	Types getType() const;

	/** Return the numbers of the messages that have changed.
	  *
	  * @return a list of message numbers
	  */
	const std::vector <int>& getNumbers() const;

	/** Dispatch the event to the specified listener.
	  *
	  * @param listener listener to notify
	  */
	void dispatch(class messageChangedListener* listener) const;

private:

	ref <folder> m_folder;
	const Types m_type;
	std::vector <int> m_nums;
};


/** Listener for events occuring on a message.
  */

class messageChangedListener
{
protected:

	virtual ~messageChangedListener() { }

public:

	virtual void messageChanged(const messageChangedEvent& event) = 0;
};


/** Event occuring on a folder.
  */

class folderEvent
{
public:

	enum Types
	{
		TYPE_CREATED,   /**< A folder was created. */
		TYPE_DELETED,   /**< A folder was deleted. */
		TYPE_RENAMED    /**< A folder was renamed. */
	};


	folderEvent(ref <folder> folder, const Types type, const utility::path& oldPath, const utility::path& newPath);

	/** Return the folder on which the event occured.
	  *
	  * @return folder on which the event occured
	  */
	ref <folder> getFolder() const;

	/** Return the event type.
	  *
	  * @return event type (see folderEvent::Types)
	  */
	Types getType() const;

	/** Dispatch the event to the specified listener.
	  *
	  * @param listener listener to notify
	  */
	void dispatch(class folderListener* listener) const;

private:

	ref <folder> m_folder;
	const Types m_type;
	const utility::path m_oldPath;
	const utility::path m_newPath;
};


/** Listener for events occuring on a folder.
  */

class folderListener
{
protected:

	virtual ~folderListener() { }

public:

	virtual void folderCreated(const folderEvent& event) = 0;
	virtual void folderRenamed(const folderEvent& event) = 0;
	virtual void folderDeleted(const folderEvent& event) = 0;
};


} // events
} // net
} // vmime


#endif // VMIME_NET_EVENTS_HPP_INCLUDED