/*************************************************************************/
/*  menu_bar.h                                                           */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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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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/*************************************************************************/

#ifndef MENU_BAR_H
#define MENU_BAR_H

#include "scene/gui/button.h"
#include "scene/gui/popup_menu.h"

class MenuBar : public Control {
	GDCLASS(MenuBar, Control);

	Mutex mutex;

	bool switch_on_hover = true;
	bool disable_shortcuts = false;
	bool is_native = true;
	bool flat = false;
	int start_index = -1;

	String language;
	TextDirection text_direction = TEXT_DIRECTION_AUTO;

	struct Menu {
		String name;
		String tooltip;

		Ref<TextLine> text_buf;
		bool hidden = false;
		bool disabled = false;

		Menu(const String &p_name) {
			name = p_name;
			text_buf.instantiate();
		}

		Menu() {
			text_buf.instantiate();
		}
	};
	Vector<Menu> menu_cache;
	HashSet<String> global_menus;

	int focused_menu = -1;
	int selected_menu = -1;
	int active_menu = -1;

	Vector2i mouse_pos_adjusted;
	Vector2i old_mouse_pos;
	ObjectID shortcut_context;

	int _get_index_at_point(const Point2 &p_point) const;
	Rect2 _get_menu_item_rect(int p_index) const;
	void _draw_menu_item(int p_index);

	void shape(Menu &p_menu);
	void _refresh_menu_names();
	Vector<PopupMenu *> _get_popups() const;
	int get_menu_idx_from_control(PopupMenu *p_child) const;

	void _open_popup(int p_index, bool p_focus_item = false);
	void _popup_visibility_changed(bool p_visible);
	void _update_submenu(const String &p_menu_name, PopupMenu *p_child);
	void _clear_menu();
	void _update_menu();

	bool _is_focus_owner_in_shortcut_context() const;

protected:
	virtual void shortcut_input(const Ref<InputEvent> &p_event) override;

	void _notification(int p_what);
	virtual void add_child_notify(Node *p_child) override;
	virtual void move_child_notify(Node *p_child) override;
	virtual void remove_child_notify(Node *p_child) override;
	static void _bind_methods();

public:
	virtual void gui_input(const Ref<InputEvent> &p_event) override;

	void set_switch_on_hover(bool p_enabled);
	bool is_switch_on_hover();
	void set_disable_shortcuts(bool p_disabled);

	void set_prefer_global_menu(bool p_enabled);
	bool is_prefer_global_menu() const;

	bool is_native_menu() const;

	virtual Size2 get_minimum_size() const override;

	int get_menu_count() const;

	void set_text_direction(TextDirection p_text_direction);
	TextDirection get_text_direction() const;

	void set_language(const String &p_language);
	String get_language() const;

	void set_start_index(int p_index);
	int get_start_index() const;

	void set_flat(bool p_enabled);
	bool is_flat() const;

	void set_menu_title(int p_menu, const String &p_title);
	String get_menu_title(int p_menu) const;

	void set_menu_tooltip(int p_menu, const String &p_tooltip);
	String get_menu_tooltip(int p_menu) const;

	void set_menu_disabled(int p_menu, bool p_disabled);
	bool is_menu_disabled(int p_menu) const;

	void set_menu_hidden(int p_menu, bool p_hidden);
	bool is_menu_hidden(int p_menu) const;

	void set_shortcut_context(Node *p_node);
	Node *get_shortcut_context() const;

	PopupMenu *get_menu_popup(int p_menu) const;

	virtual void get_translatable_strings(List<String> *p_strings) const override;
	virtual String get_tooltip(const Point2 &p_pos) const override;

	MenuBar();
	~MenuBar();
};

#endif // MENU_BAR_H