Where to find code from godot Editor

[joeblub]

Godot Version

4.4.1

Question

i have heard that the godot Editor was made using Godot itself. I would like to see (and copy) the code of the editor for my plugins, as I would like my stuff to work exactly as the native UI.

In this case for example I want to add a Button with a Popup kind of like this:

I could not easily figure out how to do it. I could just directly ask how to do it here. But I think it would be much more helpful to be able to see the existing code for stuff like this, so I can help myself with this kind of problem.

[yesko]

While (as far as I know) the Godot editor UI does use the same functionality as plugins, the engine is written entirely in C++ and doesn’t exist as a Godot project. In case you’re familiar with C++, you can find the source code here, although I don’t know how helpful it will be to copy from:

GitHub - godotengine/godot: Godot Engine – Multi-platform 2D and 3D game...

You can make dropdowns in Godot with the class MenuButton, the docs explain pretty well how to use it.

[greenparrot]

@joeblub

Popup

@tool
extends EditorPlugin


func _enter_tree() -> void:
	var menu_button = MenuButton.new()
	menu_button.text = "Button"
	menu_button.get_popup().add_item("Popup1")
	menu_button.get_popup().add_item("Popup2")
	menu_button.show()
	#var editor_plugin = EditorPlugin.new()
	add_control_to_container(EditorPlugin.CONTAINER_CANVAS_EDITOR_MENU,menu_button)


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

[joeblub]

Thanks for your help.
As for my main question, i will consider it impossible to view the implementation in gdscript, since it is apparently not implemented in gdscript.
I am currently working on using Popups (-: