Widget improvements

scripts/lua/modules/datamodel_utils.lua

@@ -0,0 +1,54 @@
+--
+-- (C) 2020 - ntop.org
+--
+
+local datamodel = {}
+datamodel.__index = datamodel
+
+-- ######################################
+
+function datamodel:create(labels)
+   local ret = {}
+
+   setmetatable(ret,datamodel)  -- Create the class
+   
+   ret.column_labels = labels
+   ret.rows          = {}
+   ret.timestamps    = {}
+
+   return(ret)
+end
+
+-- ######################################
+
+function datamodel:appendRow(when, row)
+   table.insert(self.timestamps, when)
+   table.insert(self.rows, row)
+end
+
+-- ######################################
+
+-- Return the data formatted as expected by a table widget
+function datamodel:getAsTable()
+   local ret = {}
+
+   ret.header = self.column_labels
+   ret.rows   = self.rows
+   
+   return(ret)
+end
+
+-- ######################################
+
+-- Return the data
+function datamodel:getData(transformation)
+   if(transformation == "table") then
+      return(self:getAsTable())
+   else
+      return({})
+   end
+end
+
+-- ######################################
+
+return(datamodel)