Is there a way to extend the right click popup menu of the FileSystem dock using plugins?

[nubels]

Godot Version

4.4.1

Question

I want to create a plugin for generating bitmaps from images and storing them as images.

Is there a way to extend the right click popup menu of the FileSystem dock using plugins? If so, how can I implement this?

@tool
extends EditorPlugin


func _enter_tree() -> void:
	# inject the new button. when it's pressed, check if the selected file is an image. if so, generate the bitmap and so on.
	pass


func _exit_tree() -> void:
	# Clean-up of the plugin goes here.
	pass

[mrcdk]

I don’t think they menu is exposed to scripting directly but it’s possible to modify it:

@tool
extends EditorPlugin


const ENTRY_ID = 9696


func _enter_tree() -> void:
    # Get the filesystem dock and find all its popup menues
	var fs = EditorInterface.get_file_system_dock()
	var popup_menues = fs.find_children("*", "PopupMenu", false, false)
	
	for popup_menu:PopupMenu in popup_menues:
        # Connect to the about_to_popup signal in a deferred way so we can add an item 
        # after it's been filled
		popup_menu.about_to_popup.connect(_on_popup_menu_about_to_popup.bind(popup_menu), CONNECT_DEFERRED)
		# Connect to the id_pressed signal to react to it
		popup_menu.id_pressed.connect(_on_popup_menu_id_clicked)


func _exit_tree() -> void:
    # Clean-up
	var fs = EditorInterface.get_file_system_dock()
	var popup_menues = fs.find_children("*", "PopupMenu", false, false)
	for popup_menu:PopupMenu in popup_menues:
		popup_menu.about_to_popup.disconnect(_on_popup_menu_about_to_popup)
		popup_menu.id_pressed.disconnect(_on_popup_menu_id_clicked)
		
		
func _on_popup_menu_about_to_popup(popup_menu:PopupMenu) -> void:
    # If the new item entry hasn't been added
	if popup_menu.get_item_index(ENTRY_ID) == -1:
        # add it
		popup_menu.add_item("NEW ITEM", ENTRY_ID)


func _on_popup_menu_id_clicked(id:int) -> void:
    # If the id is the new item entry we added then do whatever we need to do
	if id == ENTRY_ID:
		print("NEW ITEM ENTRY CLICKED")