//
// 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 "styles/style_widgets.h"
#include "ui/animation.h"
#include "ui/twidget.h"

namespace Ui {

template <typename Widget> class WidgetSlideWrap;

template <> class WidgetSlideWrap<TWidget> : public TWidget {
public:
	WidgetSlideWrap(QWidget *parent, object_ptr<TWidget> entity, style::margins entityPadding,
	                Fn<void()> updateCallback, int duration = st::widgetSlideDuration);

	void showAnimated();
	void hideAnimated();
	void toggleAnimated(bool visible) {
		if (visible) {
			showAnimated();
		} else {
			hideAnimated();
		}
	}
	void showFast() {
		toggleFast(true);
	}
	void hideFast() {
		toggleFast(false);
	}
	void toggleFast(bool visible);

	bool isHiddenOrHiding() const {
		return isHidden() || (_a_height.animating() && _hiding);
	}

	void finishAnimation() {
		_a_height.finish();
		myEnsureResized(_entity);
		animationCallback();
	}
	bool animating() const {
		return _a_height.animating();
	}

	TWidget *entity() {
		return _entity;
	}

	const TWidget *entity() const {
		return _entity;
	}

	QMargins getMargins() const override;
	int naturalWidth() const override;

protected:
	bool eventFilter(QObject *object, QEvent *event) override;
	int resizeGetHeight(int newWidth) override;

private:
	void animationCallback();

	object_ptr<TWidget> _entity;
	bool _inResizeToWidth = false;
	style::margins _padding;
	int _duration;
	Fn<void()> _updateCallback;

	style::size _realSize;
	int _forceHeight = -1;
	Animation _a_height;
	bool _hiding = false;
};

template <typename Widget> class WidgetSlideWrap : public WidgetSlideWrap<TWidget> {
public:
	WidgetSlideWrap(QWidget *parent, object_ptr<Widget> entity, style::margins entityPadding, Fn<void()> updateCallback,
	                int duration = st::widgetSlideDuration)
	    : WidgetSlideWrap<TWidget>(parent, std::move(entity), entityPadding, std::move(updateCallback), duration) {}
	Widget *entity() {
		return static_cast<Widget *>(WidgetSlideWrap<TWidget>::entity());
	}
	const Widget *entity() const {
		return static_cast<const Widget *>(WidgetSlideWrap<TWidget>::entity());
	}
};

} // namespace Ui