feat: add key dispatcher

lua/CC Tweaked/tutel/tutel-host.lua

@@ -134,10 +134,7 @@ function registerEventListener(name, listener)
 end
 
 function dispatchEvents(event, ...)
-    -- log.info("dispatching event: %s", event)
-
     local eventTbl = eventListeners[event]
-
     if not eventTbl then return end
 
     for i = 1, #eventTbl, 1 do
@@ -185,17 +182,39 @@ registerEventListener("modem_message", handleMessages)
 local logOffset = 0
 
 -- to-do: add key handlers
-function handleKey(key, isHeld)
-    if key == 264 then
-        logOffset = logOffset - 1
-    elseif key == 265 then
-        logOffset = logOffset + 1
-    end
 
+--[[
+    key handling
+]]
+local keyListeners = {}
+function registerKeyListener(id, listener)
+    if not keyListeners[id] then keyListeners[id] = {} end
+    table.insert(keyListeners[id], listener)
+
+end
+
+function dispatchKey(key, isHeld)
+    local keyTbl = eventListeners[key]
+    if not keyTbl then return end
+
+    for i = 1, #keyTbl, 1 do
+        keyTbl[i](isHeld)
+    end
+end
+registerEventListener("key", dispatchKey)
+
+function scrollLogsUp(isHeld)
+    logOffset = logOffset - 1
     if logOffset < 0 then logOffset = 0 end
+end
+registerKeyListener(265, scrollLogsUp)
+
+function scrollLogsDown(isHeld)
+    logOffset = logOffset + 1
     if logOffset >= #log.buffer then  logOffset = #log.buffer - 1 end
 end
-registerEventListener("key", handleKey)
+registerKeyListener(264, scrollLogsUp)
+
 
 --[[
     main