Merge pull request #467 from Neerti/12/7/2015_nanoUI_ports

Ports NanoUI fixes and changes from Bay

code/modules/nano/interaction/base.dm

@@ -1,6 +1,9 @@
 /datum/proc/nano_host()
 	return src
 
+/datum/proc/nano_container()
+	return src
+
 /datum/proc/CanUseTopic(var/mob/user, var/datum/topic_state/state)
 	var/src_object = nano_host()
 	return state.can_use_topic(src_object, user)

code/modules/nano/interaction/interactive.dm

@@ -0,0 +1,7 @@
+/*
+	This state always returns STATUS_INTERACTIVE
+*/
+/var/global/datum/topic_state/interactive/interactive_state = new()
+
+/datum/topic_state/interactive/can_use_topic(var/src_object, var/mob/user)
+	return STATUS_INTERACTIVE

code/modules/nano/interaction/remote.dm

@@ -0,0 +1,39 @@
+/*
+	This state checks that user is capable, within range of the remoter, etc. and that src_object meets the basic requirements for interaction (being powered, non-broken, etc.
+	Whoever initializes this state is also responsible for deleting it properly.
+*/
+/datum/topic_state/remote
+	var/datum/remoter
+	var/datum/remote_target
+	var/datum/topic_state/remoter_state
+
+/datum/topic_state/remote/New(var/remoter, var/remote_target, var/datum/topic_state/remoter_state = default_state)
+	src.remoter = remoter
+	src.remote_target = remote_target
+	src.remoter_state = remoter_state
+	..()
+
+/datum/topic_state/remote/Destroy()
+	src.remoter = null
+	src.remoter_state = null
+
+	// Force an UI update before we go, ensuring that any windows we may have opened for the remote target closes.
+	nanomanager.update_uis(remote_target.nano_container())
+	remote_target = null
+	return ..()
+
+/datum/topic_state/remote/can_use_topic(var/datum/src_object, var/mob/user)
+	if(!(remoter && remoter_state))	// The remoter is gone, let us leave
+		return STATUS_CLOSE
+
+	if(src_object != remote_target)
+		error("remote - Unexpected src_object: Expected '[remote_target]'/[remote_target.type], was '[src_object]'/[src_object.type]")
+
+	// This checks if src_object is powered, etc.
+	// The interactive state is otherwise simplistic and only returns STATUS_INTERACTIVE and never checks distances, etc.
+	. = src_object.CanUseTopic(user, interactive_state)
+	if(. == STATUS_CLOSE)
+		return
+
+	// This is the (generally) heavy checking, making sure the user is capable, within range of the remoter source, etc.
+	return min(., remoter.CanUseTopic(user, remoter_state))

code/modules/nano/modules/power_monitor.dm

@@ -47,7 +47,7 @@
 // Allows us to process UI clicks, which are relayed in form of hrefs.
 /datum/nano_module/power_monitor/Topic(href, href_list)
 	if(..())
-		return
+		return 1
 	if( href_list["clear"] )
 		active_sensor = null
 	if( href_list["refresh"] )

code/modules/nano/nanoui.dm

@@ -140,7 +140,8 @@ nanoui is used to open and update nano browser uis
   * @return nothing
   */
 /datum/nanoui/proc/update_status(var/push_update = 0)
-	var/new_status = src_object.CanUseTopic(user, state)
+	var/obj/host = src_object.nano_host()
+	var/new_status = host.CanUseTopic(user, state)
 	if(master_ui)
 		new_status = min(new_status, master_ui.status)
 
@@ -428,6 +429,9 @@ nanoui is used to open and update nano browser uis
 	user << browse(null, "window=[window_id]")
 	for(var/datum/nanoui/child in children)
 		child.close()
+	children.Cut()
+	state = null
+	master_ui = null
 
  /**
   * Set the UI window to call the nanoclose verb when the window is closed

polaris.dme

@@ -1499,10 +1499,12 @@
 #include "code\modules\nano\interaction\conscious.dm"
 #include "code\modules\nano\interaction\contained.dm"
 #include "code\modules\nano\interaction\default.dm"
+#include "code\modules\nano\interaction\interactive.dm"
 #include "code\modules\nano\interaction\inventory.dm"
 #include "code\modules\nano\interaction\inventory_deep.dm"
 #include "code\modules\nano\interaction\outside.dm"
 #include "code\modules\nano\interaction\physical.dm"
+#include "code\modules\nano\interaction\remote.dm"
 #include "code\modules\nano\interaction\self.dm"
 #include "code\modules\nano\interaction\zlevel.dm"
 #include "code\modules\nano\modules\alarm_monitor.dm"