Modular PDA tweaks and bugfixes (#10440)

rscadd: "Handheld modular computers now use flashlights as a light source. They may be turned on/off via a button in the PC header, and have their brightness adjusted in Hardware Configuration."
    tweak: Message notifications should be much larger.
    tweak: "Chat messages are now logged to the NTNet Monitoring program."
    bugfix: "IDs are now unregistered from computers when the computer is destroyed."
    bugfix: "Fix Eject Battery having a global view range."
    bugfix: "Chat Clients are no longer set to 'silent' by default."
    backend: "Added a new slider component for VueUIs."

Closes #10439

code/modules/modular_computers/hardware/hardware.dm

@@ -13,6 +13,19 @@
 	var/damage_failure = 50				// "Failure" threshold. When damage exceeds this value the hardware piece will not work at all.
 	var/malfunction_probability = 10	// Chance of malfunction when the component is damaged
 
+// Default handling of hardware enable/disable. Override for specific functionality.
+
+/obj/item/computer_hardware/proc/enable()
+	. = enabled = TRUE
+
+/obj/item/computer_hardware/proc/disable()
+	. = enabled = FALSE
+
+/obj/item/computer_hardware/proc/toggle()
+	if(enabled)
+		return disable()
+	return enable()
+
 /obj/item/computer_hardware/attackby(obj/item/W, mob/living/user)
 	// Multitool. Runs diagnostics
 	if(W.ismultitool())

code/modules/modular_computers/hardware/misc.dm

@@ -0,0 +1,35 @@
+/obj/item/computer_hardware/flashlight
+    name = "flashlight"
+    desc = "A small pen-sized flashlight used to illuminate a small area."
+    icon = 'icons/obj/lighting.dmi'
+    icon_state = "headlights"
+    power_usage = 50
+    enabled = FALSE
+    critical = FALSE
+    var/range = 2
+    var/power = 1
+    var/flashlight_color = LIGHT_COLOR_HALOGEN
+
+/obj/item/computer_hardware/flashlight/enable()
+    . = ..()
+    if(parent_computer)
+        parent_computer.light_range = range
+        parent_computer.light_power = power
+        tweak_light(parent_computer)
+
+/obj/item/computer_hardware/flashlight/disable()
+    . = ..()
+    if(parent_computer)
+        parent_computer.light_range = initial(parent_computer.light_range)
+        parent_computer.light_power = initial(parent_computer.light_power)
+        tweak_light(parent_computer)
+
+/obj/item/computer_hardware/flashlight/proc/tweak_brightness(var/new_power)
+    . = power = Clamp(0, new_power, 1)
+    parent_computer.light_power = power
+    tweak_light(parent_computer)
+
+/obj/item/computer_hardware/flashlight/proc/tweak_light(var/obj/item/modular_computer/C)
+    if(!istype(C))
+        return
+    C.set_light(C.light_range, C.light_power, l_color = flashlight_color)

code/modules/modular_computers/hardware/tesla_link.dm

@@ -29,7 +29,7 @@
 		deactivate()
 	return ..()
 
-/obj/item/computer_hardware/tesla_link/charging_cable/proc/toggle(var/obj/machinery/power/power_source, mob/user)
+/obj/item/computer_hardware/tesla_link/charging_cable/toggle(var/obj/machinery/power/power_source, mob/user)
 	if(!source)
 		if(in_range(power_source, src))
 			to_chat(user, SPAN_NOTICE("You connect \the [src] to \the [power_source]."))