/*************************************************************************/
/*  flow_container.h                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
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/*************************************************************************/

#ifndef FLOW_CONTAINER_H
#define FLOW_CONTAINER_H

#include "scene/gui/container.h"

class FlowContainer : public Container {
	GDCLASS(FlowContainer, Container);

private:
	int cached_size = 0;
	int cached_line_count = 0;

	bool vertical = false;

	struct ThemeCache {
		int h_separation = 0;
		int v_separation = 0;
	} theme_cache;

	void _resort();

protected:
	bool is_fixed = false;

	virtual void _update_theme_item_cache() override;

	void _notification(int p_what);
	void _validate_property(PropertyInfo &p_property) const;
	static void _bind_methods();

public:
	int get_line_count() const;

	void set_vertical(bool p_vertical);
	bool is_vertical() const;

	virtual Size2 get_minimum_size() const override;

	virtual Vector<int> get_allowed_size_flags_horizontal() const override;
	virtual Vector<int> get_allowed_size_flags_vertical() const override;

	FlowContainer(bool p_vertical = false);
};

class HFlowContainer : public FlowContainer {
	GDCLASS(HFlowContainer, FlowContainer);

public:
	HFlowContainer() :
			FlowContainer(false) { is_fixed = true; }
};

class VFlowContainer : public FlowContainer {
	GDCLASS(VFlowContainer, FlowContainer);

public:
	VFlowContainer() :
			FlowContainer(true) { is_fixed = true; }
};

#endif // FLOW_CONTAINER_H