text: /*************************************************************************/
  /*  animation_tree_editor_plugin.h                                       */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* 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 ANIMATION_TREE_EDITOR_PLUGIN_H
  #define ANIMATION_TREE_EDITOR_PLUGIN_H
  
  #include "editor/editor_node.h"
  #include "editor/editor_plugin.h"
  #include "editor/property_editor.h"
  #include "scene/animation/animation_tree.h"
  #include "scene/gui/button.h"
  #include "scene/gui/graph_edit.h"
  #include "scene/gui/popup.h"
  #include "scene/gui/tree.h"
  
  class AnimationTreeNodeEditorPlugin : public VBoxContainer {
  	GDCLASS(AnimationTreeNodeEditorPlugin, VBoxContainer);
  
  public:
  	virtual bool can_edit(const Ref<AnimationNode> &p_node) = 0;
  	virtual void edit(const Ref<AnimationNode> &p_node) = 0;
  };
  
  class AnimationTreeEditor : public VBoxContainer {
  	GDCLASS(AnimationTreeEditor, VBoxContainer);
  
  	ScrollContainer *path_edit;
  	HBoxContainer *path_hb;
  
  	AnimationTree *tree;
  	MarginContainer *editor_base;
  
  	Vector<String> button_path;
  	Vector<String> edited_path;
  	Vector<AnimationTreeNodeEditorPlugin *> editors;
  
  	void _update_path();
  	void _about_to_show_root();
  	ObjectID current_root;
  
  	void _path_button_pressed(int p_path);
  
  	static Vector<String> get_animation_list();
  
  protected:
  	void _notification(int p_what);
  	static void _bind_methods();
  
  	static AnimationTreeEditor *singleton;
  
  public:
  	AnimationTree *get_tree() { return tree; }
  	void add_plugin(AnimationTreeNodeEditorPlugin *p_editor);
  	void remove_plugin(AnimationTreeNodeEditorPlugin *p_editor);
  
  	String get_base_path();
  
  	bool can_edit(const Ref<AnimationNode> &p_node) const;
  
  	void edit_path(const Vector<String> &p_path);
  	Vector<String> get_edited_path() const;
  
  	void enter_editor(const String &p_path = "");
  	static AnimationTreeEditor *get_singleton() { return singleton; }
  	void edit(AnimationTree *p_tree);
  	AnimationTreeEditor();
  };
  
  class AnimationTreeEditorPlugin : public EditorPlugin {
  	GDCLASS(AnimationTreeEditorPlugin, EditorPlugin);
  
  	AnimationTreeEditor *anim_tree_editor;
  	EditorNode *editor;
  	Button *button;
  
  public:
  	virtual String get_name() const override { return "AnimationTree"; }
  	bool has_main_screen() const override { return false; }
  	virtual void edit(Object *p_object) override;
  	virtual bool handles(Object *p_object) const override;
  	virtual void make_visible(bool p_visible) override;
  
  	AnimationTreeEditorPlugin(EditorNode *p_node);
  	~AnimationTreeEditorPlugin();
  };
  
  #endif // ANIMATION_TREE_EDITOR_PLUGIN_H
  