Wireless button updates

Added toggle variants for buttons, allowing them to "deactivate" connected devices.
Converted flashers and holosigns.
Fixes to keep in line with upstream.

code/modules/wireless/devices.dm

@@ -1,31 +1,32 @@
-/datum/wifi/receiver/button
-	var/obj/parent
-
-/datum/wifi/receiver/button/New(var/new_id, var/obj/O)
-	id = new_id
-	if(istype(O))
-		parent = O
-	..()
-
-/datum/wifi/receiver/button/Destroy()
-	parent = null
-	return ..()
-
+//-------------------------------
+// Buttons
+//-------------------------------
 /datum/wifi/receiver/button/proc/activate(mob/living/user)
 
+/datum/wifi/receiver/button/proc/deactivate(mob/living/user)
 
 /datum/wifi/sender/button/proc/activate(mob/living/user)
 	for(var/datum/wifi/receiver/button/B in connected_devices)
 		B.activate(user)
 
+/datum/wifi/sender/button/proc/deactivate(mob/living/user)
+	for(var/datum/wifi/receiver/button/B in connected_devices)
+		B.deactivate(user)
+
 //-------------------------------
 // Emitter
 //-------------------------------
 /datum/wifi/receiver/button/emitter/activate(mob/living/user)
 	..()
 	var/obj/machinery/power/emitter/E = parent
-	if(istype(E))
-		E.activate(user)
+	if(istype(E) && !E.active)
+		E.activate(user)	//if the emitter is not active, trigger the activate proc to toggle it
+		
+/datum/wifi/receiver/button/emitter/deactivate(mob/living/user)
+	..()
+	var/obj/machinery/power/emitter/E = parent
+	if(istype(E) && E.active)
+		E.activate(user)	//if the emitter is active, trigger the activate proc to toggle it
 
 //-------------------------------
 // Crematorium
@@ -35,3 +36,27 @@
 	var/obj/structure/crematorium/C = parent
 	if(istype(C))
 		C.cremate(user)
+
+//-------------------------------
+// Mounted Flash
+//-------------------------------
+/datum/wifi/receiver/button/flasher/activate(mob/living/user)
+	..()
+	var/obj/machinery/flasher/F = parent
+	if(istype(F))
+		F.flash()
+
+//-------------------------------
+// Holosign
+//-------------------------------
+/datum/wifi/receiver/button/holosign/activate(mob/living/user)
+	..()
+	var/obj/machinery/holosign/H = parent
+	if(istype(H) && !H.lit)
+		H.toggle()
+
+/datum/wifi/receiver/button/holosign/deactivate(mob/living/user)
+	..()
+	var/obj/machinery/holosign/H = parent
+	if(istype(H) && H.lit)
+		H.toggle()

code/modules/wireless/interfaces.dm

@@ -1,10 +1,17 @@
+//-------------------------------
+// Wifi
+//-------------------------------
 /datum/wifi
+	var/obj/parent
 	var/list/connected_devices
 
-/datum/wifi/New()
+/datum/wifi/New(var/obj/O)
 	connected_devices = new()
+	if(istype(O))
+		parent = O
 
 /datum/wifi/Destroy(var/wifi/device)
+	parent = null
 	for(var/datum/wifi/D in connected_devices)
 		D.disconnect_device(src)
 		disconnect_device(D)
@@ -17,12 +24,14 @@
 	connected_devices -= device
 
 
-
+//-------------------------------
+// Receiver
+//-------------------------------
 /datum/wifi/receiver
 	var/id
 
-/datum/wifi/receiver/New(var/new_id)
-	..()
+/datum/wifi/receiver/New(var/new_id, var/obj/O)
+	..(O)
 	id = new_id
 	wirelessProcess.add_device(src)
 
@@ -31,11 +40,14 @@
 	return ..()
 
 
+//-------------------------------
+// Sender
+//-------------------------------
 /datum/wifi/sender
 	var/target
 
-/datum/wifi/sender/New(var/new_target)
-	..()
+/datum/wifi/sender/New(var/new_target, var/obj/O)
+	..(O)
 	target = new_target
 	send_connection_request()
 
@@ -47,7 +59,9 @@
 	wirelessProcess.add_request(C)
 
 
-
+//-------------------------------
+// Connection request
+//-------------------------------
 /datum/connection_request
 	var/datum/wifi/sender/source	//wifi_sender object creating the request
 	var/target						//id tag of the target device to try to connect to
@@ -57,6 +71,9 @@
 	target = receiver
 
 
+//-------------------------------
+// Wireless tool (temp)
+//-------------------------------
 /obj/item/device/wireless_tool
 	name = "wireless tool"
 	desc = "Used for connecting machinery to controls for remote operation."