Lots of localization setup, added controller BBCode stuff also.

addons/controller_icons/objects/ControllerIconPathEditorProperty.gd

@@ -0,0 +1,47 @@
+@tool
+extends EditorProperty
+
+var selector : ConfirmationDialog
+var line_edit : LineEdit
+
+func _init(editor_interface: EditorInterface):
+	add_child(build_tree(editor_interface))
+
+func build_tree(editor_interface: EditorInterface):
+	selector = preload("res://addons/controller_icons/objects/ControllerIconPathSelectorPopup.tscn").instantiate()
+	selector.editor_interface = editor_interface
+	selector.visible = false
+	selector.path_selected.connect(
+		func(path: String):
+			if not path.is_empty():
+				emit_changed(get_edited_property(), path)
+	)
+
+	var root := HBoxContainer.new()
+
+	line_edit = LineEdit.new()
+	line_edit.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+	line_edit.text_changed.connect(func(text):
+		emit_changed(get_edited_property(), text)
+	)
+
+	var button := Button.new()
+	# UPGRADE: In Godot 4.2, there's no need to have an instance to
+	# EditorInterface, since it's now a static call:
+	# button.icon = EditorInterface.get_base_control().get_theme_icon("ListSelect", "EditorIcons")
+	button.icon = editor_interface.get_base_control().get_theme_icon("ListSelect", "EditorIcons")
+	button.tooltip_text = "Select an icon path"
+	button.pressed.connect(func():
+		selector.populate()
+		selector.popup_centered()
+	)
+
+	root.add_child(line_edit)
+	root.add_child(button)
+	root.add_child(selector)
+	return root
+
+func _update_property():
+	var new_text = get_edited_object()[get_edited_property()]
+	if line_edit.text != new_text:
+		line_edit.text = new_text