In the PictureController script, add the following code to the Execute() function:

File: PictureController.cs
            case PictureCommand.ADD: 
                AddPicture(); 
                break; 
 
            case PictureCommand.DELETE: 
                DeletePicture(); 
                break; 

Write the corresponding implementations of the commands:

    private void AddPicture() { 
        DoneEdit(); 
        GameController.instance.CreateNewPicture(); 
    } 
 
    private void DeletePicture() { 
        Destroy(gameObject); 
    } 

AddPicture will close the current picture editing and create a new picture via GameController. DeletePicture will delete the current game object.

Let's try it out. Save your work and press Play. Use the toolbar's Add button to create a new picture, move it into place, and create another. Use the Delete button to delete a picture.

Delete all the pictures in your scene. Now what? We could put an Add button in front of you, or some other mechanism for creating new pictures, apart from a current picture's toolbar. Instead, we'll always make sure there's at least one picture in the scene, with its toolbar.