/**************************************************************************/
/*  editor_node.h                                                         */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
/* the following conditions:                                              */
/*                                                                        */
/* The above copyright notice and this permission notice shall be         */
/* included in all copies or substantial portions of the Software.        */
/*                                                                        */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
/**************************************************************************/

#ifndef EDITOR_NODE_H
#define EDITOR_NODE_H

#include "core/object/script_language.h"
#include "core/templates/safe_refcount.h"
#include "editor/editor_data.h"
#include "editor/editor_folding.h"
#include "editor/plugins/editor_plugin.h"

typedef void (*EditorNodeInitCallback)();
typedef void (*EditorPluginInitializeCallback)();
typedef bool (*EditorBuildCallback)();

class AcceptDialog;
class ColorPicker;
class ConfirmationDialog;
class Control;
class FileDialog;
class MenuBar;
class MenuButton;
class OptionButton;
class Panel;
class PanelContainer;
class RichTextLabel;
class SubViewport;
class TextureProgressBar;
class Tree;
class VBoxContainer;
class VSplitContainer;
class Window;

class AudioStreamImportSettingsDialog;
class AudioStreamPreviewGenerator;
class BackgroundProgress;
class DependencyEditor;
class DependencyErrorDialog;
class DockSplitContainer;
class DynamicFontImportSettingsDialog;
class EditorAbout;
class EditorBuildProfileManager;
class EditorBottomPanel;
class EditorCommandPalette;
class EditorDockManager;
class EditorExport;
class EditorExportPreset;
class EditorFeatureProfileManager;
class EditorFileDialog;
class EditorFolding;
class EditorLayoutsDialog;
class EditorLog;
class EditorMainScreen;
class EditorNativeShaderSourceVisualizer;
class EditorPluginList;
class EditorQuickOpen;
class EditorResourcePreview;
class EditorResourceConversionPlugin;
class EditorRunBar;
class EditorSceneTabs;
class EditorSelectionHistory;
class EditorSettingsDialog;
class EditorTitleBar;
class ExportTemplateManager;
class FBXImporterManager;
class FileSystemDock;
class HistoryDock;
class OrphanResourcesDialog;
class ProgressDialog;
class ProjectExportDialog;
class ProjectSettingsEditor;
class SceneImportSettingsDialog;
class SurfaceUpgradeTool;
class SurfaceUpgradeDialog;

struct EditorProgress {
	String task;
	bool force_background = false;
	bool step(const String &p_state, int p_step = -1, bool p_force_refresh = true);

	EditorProgress(const String &p_task, const String &p_label, int p_amount, bool p_can_cancel = false, bool p_force_background = false);
	~EditorProgress();
};

class EditorNode : public Node {
	GDCLASS(EditorNode, Node);

public:
	enum SceneNameCasing {
		SCENE_NAME_CASING_AUTO,
		SCENE_NAME_CASING_PASCAL_CASE,
		SCENE_NAME_CASING_SNAKE_CASE,
		SCENE_NAME_CASING_KEBAB_CASE,
	};

	enum ActionOnPlay {
		ACTION_ON_PLAY_DO_NOTHING,
		ACTION_ON_PLAY_OPEN_OUTPUT,
		ACTION_ON_PLAY_OPEN_DEBUGGER,
	};

	enum ActionOnStop {
		ACTION_ON_STOP_DO_NOTHING,
		ACTION_ON_STOP_CLOSE_BUTTOM_PANEL,
	};

	struct ExecuteThreadArgs {
		String path;
		List<String> args;
		String output;
		Thread execute_output_thread;
		Mutex execute_output_mutex;
		int exitcode = 0;
		SafeFlag done;
	};

private:
	friend class EditorSceneTabs;
	friend class SurfaceUpgradeTool;

	enum MenuOptions {
		FILE_NEW_SCENE,
		FILE_NEW_INHERITED_SCENE,
		FILE_OPEN_SCENE,
		FILE_SAVE_SCENE,
		FILE_SAVE_SCENE_SILENTLY,
		FILE_SAVE_AS_SCENE,
		FILE_SAVE_ALL_SCENES,
		FILE_SAVE_AND_RUN,
		FILE_SAVE_AND_RUN_MAIN_SCENE,
		FILE_RUN_SCENE,
		FILE_SHOW_IN_FILESYSTEM,
		FILE_EXPORT_PROJECT,
		FILE_EXPORT_MESH_LIBRARY,
		FILE_INSTALL_ANDROID_SOURCE,
		FILE_EXPLORE_ANDROID_BUILD_TEMPLATES,
		FILE_SAVE_OPTIMIZED,
		FILE_OPEN_RECENT,
		FILE_OPEN_OLD_SCENE,
		FILE_QUICK_OPEN,
		FILE_QUICK_OPEN_SCENE,
		FILE_QUICK_OPEN_SCRIPT,
		FILE_OPEN_PREV,
		FILE_CLOSE,
		FILE_CLOSE_OTHERS,
		FILE_CLOSE_RIGHT,
		FILE_CLOSE_ALL,
		FILE_QUIT,
		FILE_EXTERNAL_OPEN_SCENE,
		EDIT_UNDO,
		EDIT_REDO,
		EDIT_RELOAD_SAVED_SCENE,
		TOOLS_ORPHAN_RESOURCES,
		TOOLS_BUILD_PROFILE_MANAGER,
		TOOLS_SURFACE_UPGRADE,
		TOOLS_CUSTOM,
		RESOURCE_SAVE,
		RESOURCE_SAVE_AS,

		RUN_SETTINGS,
		RUN_USER_DATA_FOLDER,
		RELOAD_CURRENT_PROJECT,
		RUN_PROJECT_MANAGER,
		VCS_MENU,
		RUN_VCS_METADATA,
		RUN_VCS_SETTINGS,
		SETTINGS_UPDATE_CONTINUOUSLY,
		SETTINGS_UPDATE_WHEN_CHANGED,
		SETTINGS_UPDATE_ALWAYS,
		SETTINGS_UPDATE_CHANGES,
		SETTINGS_UPDATE_SPINNER_HIDE,
		SETTINGS_PREFERENCES,
		SETTINGS_LAYOUT_SAVE,
		SETTINGS_LAYOUT_DELETE,
		SETTINGS_LAYOUT_DEFAULT,
		SETTINGS_EDITOR_DATA_FOLDER,
		SETTINGS_EDITOR_CONFIG_FOLDER,
		SETTINGS_MANAGE_EXPORT_TEMPLATES,
		SETTINGS_MANAGE_FBX_IMPORTER,
		SETTINGS_MANAGE_FEATURE_PROFILES,
		SETTINGS_INSTALL_ANDROID_BUILD_TEMPLATE,
		SETTINGS_PICK_MAIN_SCENE,
		SETTINGS_TOGGLE_FULLSCREEN,
		SETTINGS_HELP,

		SCENE_TAB_CLOSE,

		EDITOR_SCREENSHOT,
		EDITOR_OPEN_SCREENSHOT,

		HELP_SEARCH,
		HELP_COMMAND_PALETTE,
		HELP_DOCS,
		HELP_FORUM,
		HELP_REPORT_A_BUG,
		HELP_COPY_SYSTEM_INFO,
		HELP_SUGGEST_A_FEATURE,
		HELP_SEND_DOCS_FEEDBACK,
		HELP_COMMUNITY,
		HELP_ABOUT,
		HELP_SUPPORT_GODOT_DEVELOPMENT,

		SET_RENDERER_NAME_SAVE_AND_RESTART,

		IMPORT_PLUGIN_BASE = 100,

		TOOL_MENU_BASE = 1000
	};

	enum {
		MAX_INIT_CALLBACKS = 128,
		MAX_BUILD_CALLBACKS = 128
	};

	struct ExportDefer {
		String preset;
		String path;
		bool debug = false;
		bool pack_only = false;
		bool android_build_template = false;
	} export_defer;

	static EditorNode *singleton;

	EditorData editor_data;
	EditorFolding editor_folding;
	EditorSelectionHistory editor_history;

	EditorCommandPalette *command_palette = nullptr;
	EditorExport *editor_export = nullptr;
	EditorLog *log = nullptr;
	EditorNativeShaderSourceVisualizer *native_shader_source_visualizer = nullptr;
	EditorPluginList *editor_plugins_force_input_forwarding = nullptr;
	EditorPluginList *editor_plugins_force_over = nullptr;
	EditorPluginList *editor_plugins_over = nullptr;
	EditorQuickOpen *quick_open = nullptr;
	EditorResourcePreview *resource_preview = nullptr;
	EditorSelection *editor_selection = nullptr;
	EditorSettingsDialog *editor_settings_dialog = nullptr;
	HistoryDock *history_dock = nullptr;

	ProjectExportDialog *project_export = nullptr;
	ProjectSettingsEditor *project_settings_editor = nullptr;

	FBXImporterManager *fbx_importer_manager = nullptr;

	Vector<EditorPlugin *> editor_plugins;
	bool _initializing_plugins = false;
	HashMap<String, EditorPlugin *> addon_name_to_plugin;
	LocalVector<String> pending_addons;
	HashMap<ObjectID, HashSet<EditorPlugin *>> active_plugins;
	bool is_main_screen_editing = false;

	Control *gui_base = nullptr;
	VBoxContainer *main_vbox = nullptr;
	OptionButton *renderer = nullptr;

	ConfirmationDialog *video_restart_dialog = nullptr;

	int renderer_current = 0;
	String renderer_request;

	// Split containers.
	DockSplitContainer *left_l_hsplit = nullptr;
	DockSplitContainer *left_l_vsplit = nullptr;
	DockSplitContainer *left_r_hsplit = nullptr;
	DockSplitContainer *left_r_vsplit = nullptr;
	DockSplitContainer *main_hsplit = nullptr;
	DockSplitContainer *right_hsplit = nullptr;
	DockSplitContainer *right_l_vsplit = nullptr;
	DockSplitContainer *right_r_vsplit = nullptr;
	DockSplitContainer *center_split = nullptr;

	// Main tabs.
	EditorSceneTabs *scene_tabs = nullptr;

	int tab_closing_idx = 0;
	List<String> tabs_to_close;
	int tab_closing_menu_option = -1;

	bool exiting = false;
	bool dimmed = false;

	DisplayServer::WindowMode prev_mode = DisplayServer::WINDOW_MODE_MAXIMIZED;
	int old_split_ofs = 0;
	VSplitContainer *top_split = nullptr;
	Control *vp_base = nullptr;

	Label *project_title = nullptr;
	Control *left_menu_spacer = nullptr;
	Control *right_menu_spacer = nullptr;
	EditorTitleBar *title_bar = nullptr;
	EditorRunBar *project_run_bar = nullptr;
	MenuBar *main_menu = nullptr;
	PopupMenu *apple_menu = nullptr;
	PopupMenu *file_menu = nullptr;
	PopupMenu *project_menu = nullptr;
	PopupMenu *debug_menu = nullptr;
	PopupMenu *settings_menu = nullptr;
	PopupMenu *help_menu = nullptr;
	PopupMenu *tool_menu = nullptr;
	PopupMenu *export_as_menu = nullptr;
	Button *export_button = nullptr;
	Button *search_button = nullptr;
	TextureProgressBar *audio_vu = nullptr;

	Timer *screenshot_timer = nullptr;

	uint64_t started_timestamp = 0;

	RichTextLabel *load_errors = nullptr;
	AcceptDialog *load_error_dialog = nullptr;

	RichTextLabel *execute_outputs = nullptr;
	AcceptDialog *execute_output_dialog = nullptr;

	Ref<Theme> theme;

	Timer *system_theme_timer = nullptr;
	bool follow_system_theme = false;
	bool use_system_accent_color = false;
	bool last_dark_mode_state = false;
	Color last_system_base_color = Color(0, 0, 0, 0);
	Color last_system_accent_color = Color(0, 0, 0, 0);

	PopupMenu *recent_scenes = nullptr;
	String _recent_scene;
	List<String> previous_scenes;
	String defer_load_scene;
	Node *_last_instantiated_scene = nullptr;

	ConfirmationDialog *confirmation = nullptr;
	ConfirmationDialog *save_confirmation = nullptr;
	ConfirmationDialog *import_confirmation = nullptr;
	ConfirmationDialog *pick_main_scene = nullptr;
	Button *select_current_scene_button = nullptr;
	AcceptDialog *accept = nullptr;
	AcceptDialog *save_accept = nullptr;
	EditorAbout *about = nullptr;
	AcceptDialog *warning = nullptr;
	EditorPlugin *plugin_to_save = nullptr;

	int overridden_default_layout = -1;
	Ref<ConfigFile> default_layout;
	PopupMenu *editor_layouts = nullptr;
	EditorLayoutsDialog *layout_dialog = nullptr;

	ConfirmationDialog *gradle_build_manage_templates = nullptr;
	ConfirmationDialog *install_android_build_template = nullptr;
	ConfirmationDialog *remove_android_build_template = nullptr;
	Label *install_android_build_template_message = nullptr;
	OptionButton *choose_android_export_profile = nullptr;
	Ref<EditorExportPreset> android_export_preset;

	PopupMenu *vcs_actions_menu = nullptr;
	EditorFileDialog *file = nullptr;
	ExportTemplateManager *export_template_manager = nullptr;
	EditorFeatureProfileManager *feature_profile_manager = nullptr;
	EditorBuildProfileManager *build_profile_manager = nullptr;
	EditorFileDialog *file_templates = nullptr;
	EditorFileDialog *file_export_lib = nullptr;
	EditorFileDialog *file_script = nullptr;
	EditorFileDialog *file_android_build_source = nullptr;
	String current_path;
	MenuButton *update_spinner = nullptr;

	EditorMainScreen *editor_main_screen = nullptr;

	AudioStreamPreviewGenerator *audio_preview_gen = nullptr;
	ProgressDialog *progress_dialog = nullptr;
	BackgroundProgress *progress_hb = nullptr;

	DependencyErrorDialog *dependency_error = nullptr;
	HashMap<String, HashSet<String>> dependency_errors;
	DependencyEditor *dependency_fixer = nullptr;
	OrphanResourcesDialog *orphan_resources = nullptr;
	ConfirmationDialog *open_imported = nullptr;
	Button *new_inherited_button = nullptr;
	String open_import_request;

	EditorDockManager *editor_dock_manager = nullptr;
	Timer *editor_layout_save_delay_timer = nullptr;
	Timer *scan_changes_timer = nullptr;
	Button *distraction_free = nullptr;

	EditorBottomPanel *bottom_panel = nullptr;

	Tree *disk_changed_list = nullptr;
	ConfirmationDialog *disk_changed = nullptr;

	bool scene_distraction_free = false;
	bool script_distraction_free = false;

	bool changing_scene = false;
	bool cmdline_export_mode = false;
	bool convert_old = false;
	bool immediate_dialog_confirmed = false;
	bool opening_prev = false;
	bool restoring_scenes = false;
	bool unsaved_cache = true;

	bool requested_first_scan = false;
	bool waiting_for_first_scan = true;
	bool load_editor_layout_done = false;

	int current_menu_option = 0;

	SubViewport *scene_root = nullptr; // Root of the scene being edited.
	Object *current = nullptr;

	Ref<Resource> saving_resource;
	HashSet<Ref<Resource>> saving_resources_in_path;

	uint64_t update_spinner_step_msec = 0;
	uint64_t update_spinner_step_frame = 0;
	int update_spinner_step = 0;

	String _tmp_import_path;
	String external_file;
	String open_navigate;
	String saving_scene;
	EditorProgress *save_scene_progress = nullptr;

	DynamicFontImportSettingsDialog *fontdata_import_settings = nullptr;
	SceneImportSettingsDialog *scene_import_settings = nullptr;
	AudioStreamImportSettingsDialog *audio_stream_import_settings = nullptr;

	String import_reload_fn;

	HashSet<String> textfile_extensions;
	HashSet<String> other_file_extensions;
	HashSet<FileDialog *> file_dialogs;
	HashSet<EditorFileDialog *> editor_file_dialogs;

	Vector<Ref<EditorResourceConversionPlugin>> resource_conversion_plugins;
	PrintHandlerList print_handler;

	HashMap<String, Ref<Texture2D>> icon_type_cache;

	SurfaceUpgradeTool *surface_upgrade_tool = nullptr;
	SurfaceUpgradeDialog *surface_upgrade_dialog = nullptr;
	bool run_surface_upgrade_tool = false;

	bool was_window_windowed_last = false;

	static EditorBuildCallback build_callbacks[MAX_BUILD_CALLBACKS];
	static EditorPluginInitializeCallback plugin_init_callbacks[MAX_INIT_CALLBACKS];
	static int build_callback_count;
	static int plugin_init_callback_count;
	static Vector<EditorNodeInitCallback> _init_callbacks;

	String _get_system_info() const;

	bool _should_display_update_spinner() const;

	static void _dependency_error_report(const String &p_path, const String &p_dep, const String &p_type) {
		DEV_ASSERT(Thread::get_caller_id() == Thread::get_main_id());
		if (!singleton->dependency_errors.has(p_path)) {
			singleton->dependency_errors[p_path] = HashSet<String>();
		}
		singleton->dependency_errors[p_path].insert(p_dep + "::" + p_type);
	}

	static Ref<Texture2D> _file_dialog_get_icon(const String &p_path);
	static void _file_dialog_register(FileDialog *p_dialog);
	static void _file_dialog_unregister(FileDialog *p_dialog);
	static void _editor_file_dialog_register(EditorFileDialog *p_dialog);
	static void _editor_file_dialog_unregister(EditorFileDialog *p_dialog);

	static void _file_access_close_error_notify(const String &p_str);
	static void _file_access_close_error_notify_impl(const String &p_str);

	static void _print_handler(void *p_this, const String &p_string, bool p_error, bool p_rich);
	static void _print_handler_impl(const String &p_string, bool p_error, bool p_rich);
	static void _resource_saved(Ref<Resource> p_resource, const String &p_path);
	static void _resource_loaded(Ref<Resource> p_resource, const String &p_path);

	void _update_theme(bool p_skip_creation = false);
	void _build_icon_type_cache();
	void _enable_pending_addons();

	void _dialog_action(String p_file);

	void _add_to_history(const Object *p_object, const String &p_property, bool p_inspector_only);
	void _edit_current(bool p_skip_foreign = false, bool p_skip_inspector_update = false);
	void _dialog_display_save_error(String p_file, Error p_error);
	void _dialog_display_load_error(String p_file, Error p_error);

	void _menu_option(int p_option);
	void _menu_confirm_current();
	void _menu_option_confirm(int p_option, bool p_confirmed);

	void _android_build_source_selected(const String &p_file);
	void _android_export_preset_selected(int p_index);

	void _request_screenshot();
	void _screenshot(bool p_use_utc = false);
	void _save_screenshot(NodePath p_path);

	void _check_system_theme_changed();

	void _tool_menu_option(int p_idx);
	void _export_as_menu_option(int p_idx);
	void _update_file_menu_opened();
	void _update_file_menu_closed();

	void _remove_plugin_from_enabled(const String &p_name);
	void _plugin_over_edit(EditorPlugin *p_plugin, Object *p_object);
	void _plugin_over_self_own(EditorPlugin *p_plugin);

	void _fs_changed();
	void _resources_reimporting(const Vector<String> &p_resources);
	void _resources_reimported(const Vector<String> &p_resources);
	void _sources_changed(bool p_exist);

	void _node_renamed();
	void _save_editor_states(const String &p_file, int p_idx = -1);
	void _load_editor_plugin_states_from_config(const Ref<ConfigFile> &p_config_file);
	void _update_title();
	void _version_control_menu_option(int p_idx);
	void _close_messages();
	void _show_messages();
	void _vp_resized();
	void _titlebar_resized();
	void _viewport_resized();

	void _update_undo_redo_allowed();

	int _save_external_resources(bool p_also_save_external_data = false);

	void _set_current_scene(int p_idx);
	void _set_current_scene_nocheck(int p_idx);
	bool _validate_scene_recursive(const String &p_filename, Node *p_node);
	void _save_scene(String p_file, int idx = -1);
	void _save_all_scenes();
	int _next_unsaved_scene(bool p_valid_filename, int p_start = 0);
	void _discard_changes(const String &p_str = String());
	void _scene_tab_closed(int p_tab);
	void _cancel_close_scene_tab();

	void _inherit_request(String p_file);
	void _instantiate_request(const Vector<String> &p_files);

	void _quick_opened();
	void _open_command_palette();

	void _project_run_started();
	void _project_run_stopped();

	void _add_to_recent_scenes(const String &p_scene);
	void _update_recent_scenes();
	void _open_recent_scene(int p_idx);
	void _dropped_files(const Vector<String> &p_files);
	void _add_dropped_files_recursive(const Vector<String> &p_files, String to_path);

	void _update_vsync_mode();
	void _update_from_settings();
	void _gdextensions_reloaded();

	void _renderer_selected(int);
	void _update_renderer_color();
	void _add_renderer_entry(const String &p_renderer_name, bool p_mark_overridden);

	void _exit_editor(int p_exit_code);

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

	bool has_main_screen() const { return true; }

	void _remove_edited_scene(bool p_change_tab = true);
	void _remove_scene(int index, bool p_change_tab = true);
	bool _find_and_save_resource(Ref<Resource> p_res, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	bool _find_and_save_edited_subresources(Object *obj, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	void _save_edited_subresources(Node *scene, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	void _mark_unsaved_scenes();

	void _find_node_types(Node *p_node, int &count_2d, int &count_3d);
	void _save_scene_with_preview(String p_file, int p_idx = -1);
	void _close_save_scene_progress();

	bool _find_scene_in_use(Node *p_node, const String &p_path) const;

	void _proceed_closing_scene_tabs();
	bool _is_closing_editor() const;

	Dictionary _get_main_scene_state();
	void _set_main_scene_state(Dictionary p_state, Node *p_for_scene);

	void _save_editor_layout();
	void _load_editor_layout();

	void _save_central_editor_layout_to_config(Ref<ConfigFile> p_config_file);
	void _load_central_editor_layout_from_config(Ref<ConfigFile> p_config_file);

	void _save_window_settings_to_config(Ref<ConfigFile> p_layout, const String &p_section);

	void _save_open_scenes_to_config(Ref<ConfigFile> p_layout);
	void _load_open_scenes_from_config(Ref<ConfigFile> p_layout);

	void _update_layouts_menu();
	void _layout_menu_option(int p_id);

	void _update_addon_config();

	void _toggle_distraction_free_mode();

	void _inherit_imported(const String &p_action);
	void _open_imported();

	void _update_update_spinner();

	void _resources_changed(const Vector<String> &p_resources);
	void _scan_external_changes();
	void _reload_modified_scenes();
	void _reload_project_settings();
	void _resave_scenes(String p_str);

	void _feature_profile_changed();
	bool _is_class_editor_disabled_by_feature_profile(const StringName &p_class);

	Ref<Texture2D> _get_class_or_script_icon(const String &p_class, const Ref<Script> &p_script, const String &p_fallback = "Object", bool p_fallback_script_to_theme = false);

	void _pick_main_scene_custom_action(const String &p_custom_action_name);

	void _immediate_dialog_confirmed();

	void _begin_first_scan();

	void _notify_nodes_scene_reimported(Node *p_node, Array p_reimported_nodes);

	void _remove_all_not_owned_children(Node *p_node, Node *p_owner);

protected:
	friend class FileSystemDock;

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

public:
	// Public for use with callable_mp.
	void init_plugins();
	void _on_plugin_ready(Object *p_script, const String &p_activate_name);

	bool call_build();

	// This is a very naive estimation, but we need something now. Will be reworked later.
	bool is_editor_ready() const { return is_inside_tree() && !waiting_for_first_scan; }

	static EditorNode *get_singleton() { return singleton; }

	static EditorLog *get_log() { return singleton->log; }
	static EditorData &get_editor_data() { return singleton->editor_data; }
	static EditorFolding &get_editor_folding() { return singleton->editor_folding; }

	static EditorTitleBar *get_title_bar() { return singleton->title_bar; }
	static VSplitContainer *get_top_split() { return singleton->top_split; }
	static EditorBottomPanel *get_bottom_panel() { return singleton->bottom_panel; }
	static EditorMainScreen *get_editor_main_screen() { return singleton->editor_main_screen; }

	static String adjust_scene_name_casing(const String &p_root_name);
	static String adjust_script_name_casing(const String &p_file_name, ScriptLanguage::ScriptNameCasing p_auto_casing);

	static bool has_unsaved_changes() { return singleton->unsaved_cache; }
	static void disambiguate_filenames(const Vector<String> p_full_paths, Vector<String> &r_filenames);
	static void add_io_error(const String &p_error);
	static void add_io_warning(const String &p_warning);

	static void progress_add_task(const String &p_task, const String &p_label, int p_steps, bool p_can_cancel = false);
	static bool progress_task_step(const String &p_task, const String &p_state, int p_step = -1, bool p_force_refresh = true);
	static void progress_end_task(const String &p_task);

	static void progress_add_task_bg(const String &p_task, const String &p_label, int p_steps);
	static void progress_task_step_bg(const String &p_task, int p_step = -1);
	static void progress_end_task_bg(const String &p_task);

	static void add_editor_plugin(EditorPlugin *p_editor, bool p_config_changed = false);
	static void remove_editor_plugin(EditorPlugin *p_editor, bool p_config_changed = false);

	static void add_extension_editor_plugin(const StringName &p_class_name);
	static void remove_extension_editor_plugin(const StringName &p_class_name);

	static void add_plugin_init_callback(EditorPluginInitializeCallback p_callback);
	static void add_init_callback(EditorNodeInitCallback p_callback) { _init_callbacks.push_back(p_callback); }
	static void add_build_callback(EditorBuildCallback p_callback);

	static bool immediate_confirmation_dialog(const String &p_text, const String &p_ok_text = TTR("Ok"), const String &p_cancel_text = TTR("Cancel"), uint32_t p_wrap_width = 0);

	static void cleanup();

	EditorPluginList *get_editor_plugins_force_input_forwarding() { return editor_plugins_force_input_forwarding; }
	EditorPluginList *get_editor_plugins_force_over() { return editor_plugins_force_over; }
	EditorPluginList *get_editor_plugins_over() { return editor_plugins_over; }
	EditorSelection *get_editor_selection() { return editor_selection; }
	EditorSelectionHistory *get_editor_selection_history() { return &editor_history; }

	ProjectSettingsEditor *get_project_settings() { return project_settings_editor; }

	void trigger_menu_option(int p_option, bool p_confirmed);
	bool has_previous_scenes() const;

	void new_inherited_scene() { _menu_option_confirm(FILE_NEW_INHERITED_SCENE, false); }

	void update_distraction_free_mode();
	void set_distraction_free_mode(bool p_enter);
	bool is_distraction_free_mode_enabled() const;

	void set_addon_plugin_enabled(const String &p_addon, bool p_enabled, bool p_config_changed = false);
	bool is_addon_plugin_enabled(const String &p_addon) const;

	void edit_node(Node *p_node);
	void edit_resource(const Ref<Resource> &p_resource);

	void save_resource_in_path(const Ref<Resource> &p_resource, const String &p_path);
	void save_resource(const Ref<Resource> &p_resource);
	void save_resource_as(const Ref<Resource> &p_resource, const String &p_at_path = String());

	void show_about() { _menu_option_confirm(HELP_ABOUT, false); }

	void push_item(Object *p_object, const String &p_property = "", bool p_inspector_only = false);
	void push_item_no_inspector(Object *p_object);
	void edit_previous_item();
	void edit_item(Object *p_object, Object *p_editing_owner);
	void push_node_item(Node *p_node);
	void hide_unused_editors(const Object *p_editing_owner = nullptr);

	void open_request(const String &p_path);
	void edit_foreign_resource(Ref<Resource> p_resource);

	bool is_resource_read_only(Ref<Resource> p_resource, bool p_foreign_resources_are_writable = false);

	String get_multiwindow_support_tooltip_text() const;

	bool is_changing_scene() const;

	SubViewport *get_scene_root() { return scene_root; } // Root of the scene being edited.

	void set_edited_scene(Node *p_scene);
	void set_edited_scene_root(Node *p_scene, bool p_auto_add);
	Node *get_edited_scene() { return editor_data.get_edited_scene_root(); }

	void fix_dependencies(const String &p_for_file);
	int new_scene();
	Error load_scene(const String &p_scene, bool p_ignore_broken_deps = false, bool p_set_inherited = false, bool p_clear_errors = true, bool p_force_open_imported = false, bool p_silent_change_tab = false);
	Error load_resource(const String &p_resource, bool p_ignore_broken_deps = false);

	HashMap<StringName, Variant> get_modified_properties_for_node(Node *p_node, bool p_node_references_only);
	HashMap<StringName, Variant> get_modified_properties_reference_to_nodes(Node *p_node, List<Node *> &p_nodes_referenced_by);

	struct AdditiveNodeEntry {
		Node *node = nullptr;
		NodePath parent = NodePath();
		Node *owner = nullptr;
		int index = 0;
		// Used if the original parent node is lost
		Transform2D transform_2d;
		Transform3D transform_3d;
	};

	struct ConnectionWithNodePath {
		Connection connection;
		NodePath node_path;
	};

	struct ModificationNodeEntry {
		HashMap<StringName, Variant> property_table;
		List<ConnectionWithNodePath> connections_to;
		List<Connection> connections_from;
		List<Node::GroupInfo> groups;
	};

	struct InstanceModificationsEntry {
		Node *original_node;
		String instance_path;
		List<Node *> instance_list;
		HashMap<NodePath, ModificationNodeEntry> modifications;
		List<AdditiveNodeEntry> addition_list;
	};

	struct SceneModificationsEntry {
		List<InstanceModificationsEntry> instance_list;
		HashMap<NodePath, ModificationNodeEntry> other_instances_modifications;
	};

	struct SceneEditorDataEntry {
		bool is_editable;
		bool is_display_folded;
	};

	HashMap<int, SceneModificationsEntry> scenes_modification_table;
	List<String> scenes_reimported;
	List<String> resources_reimported;

	void update_node_from_node_modification_entry(Node *p_node, ModificationNodeEntry &p_node_modification);

	void get_scene_editor_data_for_node(Node *p_root, Node *p_node, HashMap<NodePath, SceneEditorDataEntry> &p_table);

	void get_preload_scene_modification_table(
			Node *p_edited_scene,
			Node *p_reimported_root,
			Node *p_node, InstanceModificationsEntry &p_instance_modifications);

	void get_preload_modifications_reference_to_nodes(
			Node *p_root,
			Node *p_node,
			HashSet<Node *> &p_excluded_nodes,
			List<Node *> &p_instance_list_with_children,
			HashMap<NodePath, ModificationNodeEntry> &p_modification_table);
	void get_children_nodes(Node *p_node, List<Node *> &p_nodes);
	bool is_additional_node_in_scene(Node *p_edited_scene, Node *p_reimported_root, Node *p_node);

	void replace_history_reimported_nodes(Node *p_original_root_node, Node *p_new_root_node, Node *p_node);

	bool is_scene_open(const String &p_path);
	bool is_multi_window_enabled() const;

	void setup_color_picker(ColorPicker *p_picker);

	void request_instantiate_scene(const String &p_path);
	void request_instantiate_scenes(const Vector<String> &p_files);

	void set_convert_old_scene(bool p_old) { convert_old = p_old; }

	void notify_all_debug_sessions_exited();

	OS::ProcessID has_child_process(OS::ProcessID p_pid) const;
	void stop_child_process(OS::ProcessID p_pid);

	Ref<Theme> get_editor_theme() const { return theme; }
	void update_preview_themes(int p_mode);

	Ref<Script> get_object_custom_type_base(const Object *p_object) const;
	StringName get_object_custom_type_name(const Object *p_object) const;
	Ref<Texture2D> get_object_icon(const Object *p_object, const String &p_fallback = "Object");
	Ref<Texture2D> get_class_icon(const String &p_class, const String &p_fallback = "");

	bool is_object_of_custom_type(const Object *p_object, const StringName &p_class);

	void show_accept(const String &p_text, const String &p_title);
	void show_save_accept(const String &p_text, const String &p_title);
	void show_warning(const String &p_text, const String &p_title = TTR("Warning!"));

	void _copy_warning(const String &p_str);

	Error export_preset(const String &p_preset, const String &p_path, bool p_debug, bool p_pack_only, bool p_android_build_template);
	bool is_project_exporting() const;

	Control *get_gui_base() { return gui_base; }

	void save_scene_to_path(String p_file, bool p_with_preview = true) {
		if (p_with_preview) {
			_save_scene_with_preview(p_file);
		} else {
			_save_scene(p_file);
		}
	}

	bool is_scene_in_use(const String &p_path);

	void save_editor_layout_delayed();
	void save_default_environment();

	void open_export_template_manager();

	void reload_scene(const String &p_path);

	void find_all_instances_inheriting_path_in_node(Node *p_root, Node *p_node, const String &p_instance_path, HashSet<Node *> &p_instance_list);
	void preload_reimporting_with_path_in_edited_scenes(const List<String> &p_scenes);
	void reload_instances_with_path_in_edited_scenes();

	bool is_exiting() const { return exiting; }

	Dictionary drag_resource(const Ref<Resource> &p_res, Control *p_from);
	Dictionary drag_files_and_dirs(const Vector<String> &p_paths, Control *p_from);

	void add_tool_menu_item(const String &p_name, const Callable &p_callback);
	void add_tool_submenu_item(const String &p_name, PopupMenu *p_submenu);
	void remove_tool_menu_item(const String &p_name);

	PopupMenu *get_export_as_menu();

	void save_all_scenes();
	void save_scene_if_open(const String &p_scene_path);
	void save_scene_list(const HashSet<String> &p_scene_paths);
	void save_before_run();
	void try_autosave();
	void restart_editor();
	void unload_editor_addons();

	void dim_editor(bool p_dimming);
	bool is_editor_dimmed() const;

	void edit_current() { _edit_current(); };

	bool has_scenes_in_session();

	void undo();
	void redo();

	int execute_and_show_output(const String &p_title, const String &p_path, const List<String> &p_arguments, bool p_close_on_ok = true, bool p_close_on_errors = false, String *r_output = nullptr);

	EditorNode();
	~EditorNode();

	void add_resource_conversion_plugin(const Ref<EditorResourceConversionPlugin> &p_plugin);
	void remove_resource_conversion_plugin(const Ref<EditorResourceConversionPlugin> &p_plugin);
	Vector<Ref<EditorResourceConversionPlugin>> find_resource_conversion_plugin(const Ref<Resource> &p_for_resource);

	bool ensure_main_scene(bool p_from_native);
};

class EditorPluginList : public Object {
private:
	Vector<EditorPlugin *> plugins_list;

public:
	void set_plugins_list(Vector<EditorPlugin *> p_plugins_list) {
		plugins_list = p_plugins_list;
	}

	Vector<EditorPlugin *> &get_plugins_list() {
		return plugins_list;
	}

	void make_visible(bool p_visible);
	void edit(Object *p_object);
	bool forward_gui_input(const Ref<InputEvent> &p_event);
	void forward_canvas_draw_over_viewport(Control *p_overlay);
	void forward_canvas_force_draw_over_viewport(Control *p_overlay);
	EditorPlugin::AfterGUIInput forward_3d_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event, bool serve_when_force_input_enabled);
	void forward_3d_draw_over_viewport(Control *p_overlay);
	void forward_3d_force_draw_over_viewport(Control *p_overlay);
	void add_plugin(EditorPlugin *p_plugin);
	void remove_plugin(EditorPlugin *p_plugin);
	void clear();
	bool is_empty();

	EditorPluginList();
	~EditorPluginList();
};

struct EditorProgressBG {
	String task;
	void step(int p_step = -1) { EditorNode::progress_task_step_bg(task, p_step); }
	EditorProgressBG(const String &p_task, const String &p_label, int p_amount) {
		EditorNode::progress_add_task_bg(p_task, p_label, p_amount);
		task = p_task;
	}
	~EditorProgressBG() { EditorNode::progress_end_task_bg(task); }
};

#endif // EDITOR_NODE_H