/*
  This file is part of Ingen.
  Copyright 2007-2016 David Robillard <http://drobilla.net/>

  Ingen is free software: you can redistribute it and/or modify it under the
  terms of the GNU Affero General Public License as published by the Free
  Software Foundation, either version 3 of the License, or any later version.

  Ingen 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 Affero General Public License for details.

  You should have received a copy of the GNU Affero General Public License
  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef INGEN_EVENTS_DISCONNECTALL_HPP
#define INGEN_EVENTS_DISCONNECTALL_HPP

#include "Disconnect.hpp"
#include "Event.hpp"
#include "types.hpp"

#include "ingen/Message.hpp"

#include <list>
#include <memory>
#include <set>

namespace ingen {

class Interface;
class Node;

namespace server {

class ArcImpl;
class BlockImpl;
class CompiledGraph;
class Engine;
class GraphImpl;
class PortImpl;
class PreProcessContext;
class RunContext;

namespace events {

/** An event to disconnect all connections to a Block.
 *
 * \ingroup engine
 */
class DisconnectAll : public Event
{
public:
	DisconnectAll(Engine&                           engine,
	              const std::shared_ptr<Interface>& client,
	              SampleCount                       timestamp,
	              const ingen::DisconnectAll&       msg);

	DisconnectAll(Engine&    engine,
	              GraphImpl* parent,
	              Node*      object);

	~DisconnectAll() override;

	bool pre_process(PreProcessContext& ctx) override;
	void execute(RunContext& ctx) override;
	void post_process() override;
	void undo(Interface& target) override;

private:
	using Impls = std::list<Disconnect::Impl*>;

	std::set<ArcImpl*> adjacent_arcs(GraphImpl* graph);

	const ingen::DisconnectAll       _msg;
	GraphImpl*                       _parent;
	BlockImpl*                       _block;
	PortImpl*                        _port;
	Impls                            _impls;
	std::unique_ptr<CompiledGraph>   _compiled_graph;
	bool                             _deleting;
};

} // namespace events
} // namespace server
} // namespace ingen

#endif // INGEN_EVENTS_DISCONNECTALL_HPP