Object field in editor plugin

[sandormez]

Godot Version

4.2.1

Question

creating an editor plugin script looks something like this:

@tool
extends EditorPlugin

var dock

func _enter_tree():
	# Initialization of the plugin goes here.
	# Load the dock scene and instantiate it.
	dock = preload("res://addons/my_custom_dock/my_dock.tscn").instantiate()

	# Add the loaded scene to the docks.
	add_control_to_dock(DOCK_SLOT_LEFT_UL, dock)

func _exit_tree():
	# Remove the dock.
	remove_control_from_docks(dock)
	dock.free()

with my_dock.tscn being UI elements (buttons, labels, spinbox, etc).
what I am looking for is an “object field”, but I cant find such a control.
in the inspector, it looks like this:

in this case, I have added a Json object into the inspector field. but can be a script, scene or other type of objects. we can drag them in or click and select “load” or wtv.

how do I add this type of control in a editor plugin?

[dbat]

Where do you want this Object field?

If you want it in the Inspector, add an @export var myfield:Object to a script in your scene file.

[sandormez]

I found the solution already thanks. here it is:

#editor plugin script
@tool
extends EditorPlugin

var dock #Editor Plugin dock UI


#editor plugin is created##########
func _enter_tree():
	# create UI containter
	var area = VBoxContainer.new()
	area.name = "myEditorPlugin"
	# Pack UI into scene
	var scene = PackedScene.new()
	scene.pack(area)
	# instantiate scene and add it to dock UI
	dock = scene.instantiate()
	
	
	
        var objectField = EditorResourcePicker.new()
	#objectField.base_type = "JSON" #if you want to add a JSON object as resource
	#objectField.base_type  = "CompressedTexture2D" #if you want to add texture as resource
        #objectField.base_type  = "Node3D" #if you want to add Node3D as resource
        #objectField.base_type  = "Whatever" #you get the idea, you can limit any type of class as the object you want to add as resource

        #add the UI element to the Editor Plugin dock
        dock.add_child( get_UI() ) 

         # Add the editor plugin UI to the docks (Upper Left dock in this case)
	add_control_to_dock(DOCK_SLOT_RIGHT_UL, dock)
        
#editor plugin is closed##########
func _exit_tree():
	# Remove the scene from the docks:
	if(dock != null ):
		remove_control_from_docks(dock)
		dock.free()