Initial work to implement user script templates

scripts/lua/modules/user_script_templates/multi_select.lua

@@ -0,0 +1,79 @@
+--
+-- (C) 2019-21 - ntop.org
+--
+
+-- ##############################################
+
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+package.path = dirs.installdir .. "/scripts/lua/modules/user_script_templates/?.lua;" .. package.path
+
+-- Import the classes library.
+local classes = require "classes"
+-- Make sure to import the Superclass!
+local user_script_template = require "user_script_template"
+local http_lint = require "http_lint"
+
+-- ##############################################
+
+local multi_select = classes.class(user_script_template)
+
+-- ##############################################
+
+multi_select.meta = {
+}
+
+-- ##############################################
+
+-- @brief Prepare an instance of the template
+-- @return A table with the template built
+function multi_select:init()
+   -- Call the parent constructor
+   self.super:init()
+end
+
+-- #######################################################
+
+function multi_select:parseConfig(script, conf)
+  return http_lint.validateListItems(script, conf)
+end
+
+-- #######################################################
+
+function multi_select:describeConfig(script, hooks_conf)
+
+  if (not hooks_conf.all) then
+    return '' -- disabled, nothing to show
+  end
+
+  local conf = hooks_conf.all.script_conf
+
+  local msg = ''
+  if not table.empty(conf.items) then
+
+    local temp_msg = {}
+    local groups = script.gui.groups
+
+    -- build a string containing selected elements separated by comma
+    for _, group in ipairs(groups) do
+      local elements = group.elements
+      for _, element in ipairs(elements) do
+
+        local id = element[1]
+        local label = element[2]
+
+        if table.has_key(conf.items, id) then
+          -- if the label is nil then use the id
+          table.insert(temp_msg, label or id)
+        end
+      end
+    end
+
+    msg = table.concat(temp_msg, ', ')
+  end
+
+  return (msg)
+end
+
+-- #######################################################
+
+return multi_select