More WIP

Majority of base systems done.

code/modules/modular_computers/file_system/program.dm

@@ -125,12 +125,11 @@
 // It returns 0 if it can't run or if NanoModule was used instead. I suggest using NanoModules where applicable.
 /datum/computer_file/program/ui_interact(mob/user, ui_key = "main", datum/tgui/ui = null, force_open = 1, datum/tgui/master_ui = null, datum/ui_state/state = default_state)
 	if(program_state != PROGRAM_STATE_ACTIVE) // Our program was closed. Close the ui if it exists.
+		if(!ui)
+			ui = SStgui.try_update_ui(user, src, ui_key, ui, force_open)
 		if(ui)
 			ui.close()
 		return computer.ui_interact(user)
-	if(istype(NM))
-		NM.ui_interact(user, ui_key, null, force_open)
-		return 0
 	return 1
 
 
@@ -139,8 +138,32 @@
 // Calls beginning with "PRG_" are reserved for programs handling.
 // Calls beginning with "PC_" are reserved for computer handling (by whatever runs the program)
 // ALWAYS INCLUDE PARENT CALL ..() OR DIE IN FIRE.
-/datum/computer_file/program/Topic(href, href_list)
+/datum/computer_file/program/ui_act(action,params)
 	if(..())
 		return 1
 	if(computer)
-		return computer.Topic(href, href_list)
+		switch(action)
+			if("PC_exit")
+				computer.kill_program()
+				return 1
+			if("PC_shutdown")
+				computer.shutdown_computer()
+				return 1
+			if("PC_minimize")
+				var/mob/user = usr
+				if(!computer.active_program || !computer.processor_unit)
+					return
+
+				computer.idle_threads.Add(computer.active_program)
+				program_state = PROGRAM_STATE_BACKGROUND // Should close any existing UIs
+
+				computer.active_program = null
+				computer.update_icon()
+				if(user && istype(user))
+					computer.ui_interact(user) // Re-open the UI on this computer. It should show the main screen now.
+
+
+
+
+	//if(computer)
+	//	return computer.ui_act(action,params)