Add more event handling

gfx/element.lua

@@ -14,7 +14,9 @@ local Element = {
   dirty = true,
   id = "",
   onClick = nil,
-  onKey = nil
+  onKey = nil,
+  onChar = nil,
+  onEvent = nil
 }
 Element.__index = Element
 
@@ -205,10 +207,13 @@ function Element:handleEvent(evt)
     local x, y, source = Event.getClickParams(evt)
     return not not self.onClick(self, x, y, source)
   elseif Event.isKeyEvent(evt) and self.onKey ~= nil then
-    local key, held = Key.getKeyParams(evt)
+    local key, held = Event.getKeyParams(evt)
     return not not self.onKey(self, key, held)
+  elseif Event.isCharEvent(evt) and self.onChar ~= nil then
+    local keyChar = Event.getCharValue(evt)
+    return not not self.onChar(self, keyChar)
   end
-  return false
+  return self.onEvent ~= nil and self.onEvent(self, evt)
 end
 
 function Element:setOnClick(onClick)