//
// This file is part of Kepka,
// an unofficial desktop version of Telegram messaging app,
// see https://github.com/procxx/kepka
//
// Kepka 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.
//
// It 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.
//
// In addition, as a special exception, the copyright holders give permission
// to link the code of portions of this program with the OpenSSL library.
//
// Full license: https://github.com/procxx/kepka/blob/master/LICENSE
// Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
// Copyright (c) 2017- Kepka Contributors, https://github.com/procxx
//
#pragma once

#include "settings/settings_layer.h"

namespace Settings {

class CoverWidget;
class BlockWidget;

class InnerWidget : public LayerInner, private base::Subscriber {
	Q_OBJECT

public:
	InnerWidget(QWidget *parent);

	// Count new height for width=newWidth and resize to it.
	void resizeToWidth(int newWidth, int contentLeft) override {
		_contentLeft = contentLeft;
		return TWidget::resizeToWidth(newWidth);
	}

	// Updates the area that is visible inside the scroll container.
	void setVisibleTopBottom(int visibleTop, int visibleBottom) override;

	void showFinished();

private slots:
	void onBlockHeightUpdated();

protected:
	// Resizes content and counts natural widget height for the desired width.
	int resizeGetHeight(int newWidth) override;

private:
	void fullRebuild();
	void refreshBlocks();

	// Returns the new height value.
	int refreshBlocksPositions(int newWidth);

	object_ptr<CoverWidget> _cover = {nullptr};
	QList<BlockWidget *> _blocks;

	UserData *_self = nullptr;

	int _contentLeft = 0;
	bool _showFinished = false;

	int _visibleTop = 0;
	int _visibleBottom = 0;
};

} // namespace Settings