/*
 * %kadu copyright begin%
 * Copyright 2014 Rafał Przemysław Malinowski (rafal.przemyslaw.malinowski@gmail.com)
 * %kadu copyright end%
 *
 * 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 2 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, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <QtCore/QString>
#include <QtCore/QStringList>
#include <memory>

class ChatStyle;
class ChatStyleRendererFactory;

class ChatStyleEngine
{

public:
	virtual ~ChatStyleEngine() {}
	virtual QString defaultVariant(const QString &) { return {"Default"}; }
	virtual QStringList styleVariants(QString) { return {}; }

	virtual bool supportVariants() = 0;
	virtual QString isStyleValid(QString) = 0; //return QString(), if style is not valid
	virtual bool styleUsesTransparencyByDefault(QString) = 0;

	virtual std::unique_ptr<ChatStyleRendererFactory> createRendererFactory(const ChatStyle &chatStyle) = 0;

};
