/*************************************************************************/
/*  animation_blend_space_1d_editor.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 ANIMATION_BLEND_SPACE_1D_EDITOR_H
#define ANIMATION_BLEND_SPACE_1D_EDITOR_H

#include "editor/editor_plugin.h"
#include "editor/plugins/animation_tree_editor_plugin.h"
#include "scene/animation/animation_blend_space_1d.h"
#include "scene/gui/button.h"
#include "scene/gui/graph_edit.h"
#include "scene/gui/popup.h"
#include "scene/gui/separator.h"
#include "scene/gui/tree.h"

class EditorUndoRedoManager;

class AnimationNodeBlendSpace1DEditor : public AnimationTreeNodeEditorPlugin {
	GDCLASS(AnimationNodeBlendSpace1DEditor, AnimationTreeNodeEditorPlugin);

	Ref<AnimationNodeBlendSpace1D> blend_space;

	HBoxContainer *goto_parent_hb = nullptr;
	Button *goto_parent = nullptr;

	PanelContainer *panel = nullptr;
	Button *tool_blend = nullptr;
	Button *tool_select = nullptr;
	Button *tool_create = nullptr;
	VSeparator *tool_erase_sep = nullptr;
	Button *tool_erase = nullptr;
	Button *snap = nullptr;
	SpinBox *snap_value = nullptr;

	LineEdit *label_value = nullptr;
	SpinBox *max_value = nullptr;
	SpinBox *min_value = nullptr;

	CheckBox *sync = nullptr;

	HBoxContainer *edit_hb = nullptr;
	SpinBox *edit_value = nullptr;
	Button *open_editor = nullptr;

	int selected_point = -1;

	Control *blend_space_draw = nullptr;

	PanelContainer *error_panel = nullptr;
	Label *error_label = nullptr;

	bool updating = false;

	Ref<EditorUndoRedoManager> undo_redo;

	static AnimationNodeBlendSpace1DEditor *singleton;

	void _blend_space_gui_input(const Ref<InputEvent> &p_event);
	void _blend_space_draw();

	void _update_space();

	void _config_changed(double);
	void _labels_changed(String);
	void _snap_toggled();

	PopupMenu *menu = nullptr;
	PopupMenu *animations_menu = nullptr;
	Vector<String> animations_to_add;
	float add_point_pos = 0.0f;
	Vector<real_t> points;

	bool dragging_selected_attempt = false;
	bool dragging_selected = false;
	Vector2 drag_from;
	Vector2 drag_ofs;

	void _add_menu_type(int p_index);
	void _add_animation_type(int p_index);

	void _tool_switch(int p_tool);
	void _update_edited_point_pos();
	void _update_tool_erase();
	void _erase_selected();
	void _edit_point_pos(double);
	void _open_editor();

	EditorFileDialog *open_file = nullptr;
	Ref<AnimationNode> file_loaded;
	void _file_opened(const String &p_file);

	enum {
		MENU_LOAD_FILE = 1000,
		MENU_PASTE = 1001,
		MENU_LOAD_FILE_CONFIRM = 1002
	};

	StringName get_blend_position_path() const;

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

public:
	static AnimationNodeBlendSpace1DEditor *get_singleton() { return singleton; }
	virtual bool can_edit(const Ref<AnimationNode> &p_node) override;
	virtual void edit(const Ref<AnimationNode> &p_node) override;
	AnimationNodeBlendSpace1DEditor();
};

#endif // ANIMATION_BLEND_SPACE_1D_EDITOR_H