/*************************************************************************/
/*  editor_file_dialog.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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/*************************************************************************/

#ifndef EDITOR_FILE_DIALOG_H
#define EDITOR_FILE_DIALOG_H

#include "core/io/dir_access.h"
#include "scene/gui/dialogs.h"

class DependencyRemoveDialog;
class HSplitContainer;
class ItemList;
class OptionButton;
class PopupMenu;
class TextureRect;

class EditorFileDialog : public ConfirmationDialog {
	GDCLASS(EditorFileDialog, ConfirmationDialog);

public:
	enum DisplayMode {
		DISPLAY_THUMBNAILS,
		DISPLAY_LIST
	};

	enum Access {
		ACCESS_RESOURCES,
		ACCESS_USERDATA,
		ACCESS_FILESYSTEM
	};

	enum FileMode {
		FILE_MODE_OPEN_FILE,
		FILE_MODE_OPEN_FILES,
		FILE_MODE_OPEN_DIR,
		FILE_MODE_OPEN_ANY,
		FILE_MODE_SAVE_FILE
	};

	typedef Ref<Texture2D> (*GetIconFunc)(const String &);
	typedef void (*RegisterFunc)(EditorFileDialog *);

	static GetIconFunc get_icon_func;
	static GetIconFunc get_large_icon_func;
	static RegisterFunc register_func;
	static RegisterFunc unregister_func;

private:
	enum ItemMenu {
		ITEM_MENU_COPY_PATH,
		ITEM_MENU_DELETE,
		ITEM_MENU_REFRESH,
		ITEM_MENU_NEW_FOLDER,
		ITEM_MENU_SHOW_IN_EXPLORER
	};

	ConfirmationDialog *makedialog = nullptr;
	LineEdit *makedirname = nullptr;

	Button *makedir = nullptr;
	Access access = ACCESS_RESOURCES;

	VBoxContainer *vbox = nullptr;
	FileMode mode = FILE_MODE_SAVE_FILE;
	bool can_create_dir = false;
	LineEdit *dir = nullptr;

	Button *dir_prev = nullptr;
	Button *dir_next = nullptr;
	Button *dir_up = nullptr;

	HBoxContainer *drives_container = nullptr;
	HBoxContainer *shortcuts_container = nullptr;
	OptionButton *drives = nullptr;
	ItemList *item_list = nullptr;
	PopupMenu *item_menu = nullptr;
	TextureRect *preview = nullptr;
	VBoxContainer *preview_vb = nullptr;
	HSplitContainer *list_hb = nullptr;
	HBoxContainer *file_box = nullptr;
	LineEdit *file = nullptr;
	OptionButton *filter = nullptr;
	AcceptDialog *error_dialog = nullptr;
	Ref<DirAccess> dir_access;
	ConfirmationDialog *confirm_save = nullptr;
	DependencyRemoveDialog *dep_remove_dialog = nullptr;
	ConfirmationDialog *global_remove_dialog = nullptr;

	Button *mode_thumbnails = nullptr;
	Button *mode_list = nullptr;

	Button *refresh = nullptr;
	Button *favorite = nullptr;
	Button *show_hidden = nullptr;

	Button *fav_up = nullptr;
	Button *fav_down = nullptr;

	ItemList *favorites = nullptr;
	ItemList *recent = nullptr;

	Vector<String> local_history;
	int local_history_pos = 0;
	void _push_history();

	Vector<String> filters;

	bool previews_enabled = true;
	bool preview_waiting = false;
	int preview_wheel_index = 0;
	float preview_wheel_timeout = 0.0f;

	static bool default_show_hidden_files;
	static DisplayMode default_display_mode;
	bool show_hidden_files;
	DisplayMode display_mode;

	bool disable_overwrite_warning = false;
	bool invalidated = true;

	struct ThemeCache {
		Ref<Texture2D> parent_folder;
		Ref<Texture2D> forward_folder;
		Ref<Texture2D> back_folder;
		Ref<Texture2D> reload;
		Ref<Texture2D> toggle_hidden;
		Ref<Texture2D> favorite;
		Ref<Texture2D> mode_thumbnails;
		Ref<Texture2D> mode_list;
		Ref<Texture2D> favorites_up;
		Ref<Texture2D> favorites_down;

		Ref<Texture2D> folder;
		Color folder_icon_color;

		Ref<Texture2D> action_copy;
		Ref<Texture2D> action_delete;
		Ref<Texture2D> filesystem;

		Ref<Texture2D> folder_medium_thumbnail;
		Ref<Texture2D> file_medium_thumbnail;
		Ref<Texture2D> folder_big_thumbnail;
		Ref<Texture2D> file_big_thumbnail;

		Ref<Texture2D> progress[8]{};
	} theme_cache;

	void update_dir();
	void update_file_name();
	void update_file_list();
	void update_filters();

	void _focus_file_text();

	void _update_favorites();
	void _favorite_pressed();
	void _favorite_selected(int p_idx);
	void _favorite_move_up();
	void _favorite_move_down();

	void _update_recent();
	void _recent_selected(int p_idx);

	void _item_selected(int p_item);
	void _multi_selected(int p_item, bool p_selected);
	void _items_clear_selection(const Vector2 &p_pos, MouseButton p_mouse_button_index);
	void _item_dc_selected(int p_item);

	void _item_list_item_rmb_clicked(int p_item, const Vector2 &p_pos, MouseButton p_mouse_button_index);
	void _item_list_empty_clicked(const Vector2 &p_pos, MouseButton p_mouse_button_index);
	void _item_menu_id_pressed(int p_option);

	void _select_drive(int p_idx);
	void _dir_submitted(String p_dir);
	void _action_pressed();
	void _save_confirm_pressed();
	void _cancel_pressed();
	void _filter_selected(int);
	void _make_dir();
	void _make_dir_confirm();

	void _delete_items();
	void _delete_files_global();

	void _update_drives(bool p_select = true);
	void _update_icons();

	void _go_up();
	void _go_back();
	void _go_forward();

	virtual void _post_popup() override;

	void _save_to_recent();
	// Callback function is callback(String p_path,Ref<Texture2D> preview,Variant udata) preview null if could not load.

	void _thumbnail_result(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, const Variant &p_udata);
	void _thumbnail_done(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, const Variant &p_udata);
	void _request_single_thumbnail(const String &p_path);

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

	bool _is_open_should_be_disabled();

protected:
	virtual void _update_theme_item_cache() override;

	void _notification(int p_what);
	static void _bind_methods();

public:
	// Public for use with callable_mp.
	void _file_submitted(const String &p_file);

	void popup_file_dialog();
	void clear_filters();
	void add_filter(const String &p_filter, const String &p_description = "");

	void set_enable_multiple_selection(bool p_enable);
	Vector<String> get_selected_files() const;

	String get_current_dir() const;
	String get_current_file() const;
	String get_current_path() const;
	void set_current_dir(const String &p_dir);
	void set_current_file(const String &p_file);
	void set_current_path(const String &p_path);

	void set_display_mode(DisplayMode p_mode);
	DisplayMode get_display_mode() const;

	void set_file_mode(FileMode p_mode);
	FileMode get_file_mode() const;

	VBoxContainer *get_vbox();
	LineEdit *get_line_edit() { return file; }

	void set_access(Access p_access);
	Access get_access() const;

	static void set_default_show_hidden_files(bool p_show);
	static void set_default_display_mode(DisplayMode p_mode);
	void set_show_hidden_files(bool p_show);
	bool is_showing_hidden_files() const;

	void invalidate();

	void set_disable_overwrite_warning(bool p_disable);
	bool is_overwrite_warning_disabled() const;

	void set_previews_enabled(bool p_enabled);
	bool are_previews_enabled();

	EditorFileDialog();
	~EditorFileDialog();
};

VARIANT_ENUM_CAST(EditorFileDialog::FileMode);
VARIANT_ENUM_CAST(EditorFileDialog::Access);
VARIANT_ENUM_CAST(EditorFileDialog::DisplayMode);

#endif // EDITOR_FILE_DIALOG_H