#ifndef SCENE_TREE_EDITOR_H
#define SCENE_TREE_EDITOR_H

/*************************************************************************/
/*  scene_tree_editor.h                                                  */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 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.                */
/*************************************************************************/

#include "scene/gui/dialogs.h"
#include "scene/main/control.h"

#include "core/containers/list.h"
#include "core/containers/rb_set.h"
#include "core/containers/vector.h"
#include "core/math/vector2.h"
#include "core/object/object_id.h"
#include "core/string/node_path.h"
#include "core/string/string_name.h"
#include "core/string/ustring.h"
#include "core/variant/variant.h"

class EditorSelection;
class LineEdit;
class Node;
class Timer;
class Tree;
class TreeItem;
class UndoRedo;

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

	EditorSelection *editor_selection;

	enum {
		BUTTON_SUBSCENE = 0,
		BUTTON_VISIBILITY = 1,
		BUTTON_SCRIPT = 2,
		BUTTON_LOCK = 3,
		BUTTON_GROUP = 4,
		BUTTON_WARNING = 5,
		BUTTON_SIGNALS = 6,
		BUTTON_GROUPS = 7,
		BUTTON_PIN = 8,
		BUTTON_UNIQUE = 9,
	};

	Tree *tree;
	Node *selected;
	ObjectID instance_node;

	String filter;
	String filter_term_warning;

	AcceptDialog *error;
	AcceptDialog *warning;

	bool connect_to_script_mode;
	bool connecting_signal;

	int blocked;

	void _compute_hash(Node *p_node, uint64_t &hash);

	void _add_nodes(Node *p_node, TreeItem *p_parent);
	void _test_update_tree();
	void _update_tree(bool p_scroll_to_selected = false);
	bool _update_filter(TreeItem *p_parent = nullptr, bool p_scroll_to_selected = false);
	bool _item_matches_all_terms(TreeItem *p_item, Vector<String> p_terms);
	void _tree_changed();
	void _node_removed(Node *p_node);
	void _node_renamed(Node *p_node);

	TreeItem *_find(TreeItem *p_node, const NodePath &p_path);
	void _notification(int p_what);
	void _selected_changed();
	void _deselect_items();
	void _rename_node(ObjectID p_node, const String &p_name);

	void _cell_collapsed(Object *p_obj);

	uint64_t last_hash;

	bool can_rename;
	bool can_open_instance;
	bool updating_tree;
	bool show_enabled_subscene;

	void _renamed();
	UndoRedo *undo_redo;

	RBSet<Node *> marked;
	bool marked_selectable;
	bool marked_children_selectable;
	bool display_foreign;
	bool tree_dirty;
	bool pending_test_update;
	static void _bind_methods();

	void _cell_button_pressed(Object *p_item, int p_column, int p_id);
	void _toggle_visible(Node *p_node);
	void _cell_multi_selected(Object *p_object, int p_cell, bool p_selected);
	void _update_selection(TreeItem *item);
	void _node_script_changed(Node *p_node);
	void _node_visibility_changed(Node *p_node);
	void _update_visibility_color(Node *p_node, TreeItem *p_item);

	void _selection_changed();
	Node *get_scene_node() const;

	Variant get_drag_data_fw(const Point2 &p_point, Control *p_from);
	bool can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;
	void drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from);

	void _rmb_select(const Vector2 &p_pos);

	void _warning_changed(Node *p_for_node);

	Timer *update_timer;

	List<StringName> *script_types;
	bool _is_script_type(const StringName &p_type) const;

	Vector<StringName> valid_types;

public:
	void set_filter(const String &p_filter);
	String get_filter() const;
	String get_filter_term_warning() const;

	void set_undo_redo(UndoRedo *p_undo_redo) { undo_redo = p_undo_redo; };
	void set_display_foreign_nodes(bool p_display);
	bool get_display_foreign_nodes() const;

	void set_marked(const RBSet<Node *> &p_marked, bool p_selectable = false, bool p_children_selectable = true);
	void set_marked(Node *p_marked, bool p_selectable = false, bool p_children_selectable = true);
	void set_selected(Node *p_node, bool p_emit_selected = true);
	Node *get_selected();
	void set_can_rename(bool p_can_rename) { can_rename = p_can_rename; }
	void set_editor_selection(EditorSelection *p_selection);

	void set_show_enabled_subscene(bool p_show) { show_enabled_subscene = p_show; }
	void set_valid_types(const Vector<StringName> &p_valid);

	void update_tree() { _update_tree(); }

	void set_connect_to_script_mode(bool p_enable);
	void set_connecting_signal(bool p_enable);

	Tree *get_scene_tree() { return tree; }

	SceneTreeEditor(bool p_label = true, bool p_can_rename = false, bool p_can_open_instance = false);
	~SceneTreeEditor();
};

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

	SceneTreeEditor *tree;
	//Button *select;
	//Button *cancel;
	LineEdit *filter;

	void _select();
	void _cancel();
	void _filter_changed(const String &p_filter);

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

public:
	SceneTreeEditor *get_scene_tree() { return tree; }
	LineEdit *get_filter_line_edit() { return filter; }
	SceneTreeDialog();
	~SceneTreeDialog();
};

#endif