PDA Ringtone Preference (#70485)

* Creates some new defines for constant values in the Messenger app
* Created a new type of preference, text preferences, with a FeatureShortTextInput TGUI component
* Uses said new preference to re-add a PDA ringtone preference.

code/modules/modular_computers/computers/item/tablet.dm

@@ -146,6 +146,32 @@
 			explosion(src, devastation_range = -1, heavy_impact_range = -1, light_impact_range = 2, flash_range = 3)
 	qdel(src)
 
+
+/**
+ * A simple helper proc that applies the client's ringtone prefs to the tablet's messenger app,
+ * if it has one.
+ *
+ * Arguments:
+ * * ringtone_client - The client whose prefs we'll use to set the ringtone of this PDA.
+ */
+/obj/item/modular_computer/tablet/proc/update_ringtone(client/ringtone_client)
+	if(!ringtone_client)
+		return
+
+	var/new_ringtone = ringtone_client?.prefs?.read_preference(/datum/preference/text/pda_ringtone)
+
+	if(!new_ringtone || new_ringtone == MESSENGER_RINGTONE_DEFAULT)
+		return
+
+	var/obj/item/computer_hardware/hard_drive/drive = all_components[MC_HDD]
+
+	if(!drive)
+		return
+
+	for(var/datum/computer_file/program/messenger/messenger_app in drive.stored_files)
+		messenger_app.ringtone = new_ringtone
+
+
 // SUBTYPES
 
 /obj/item/modular_computer/tablet/syndicate_contract_uplink