Refactored UI preferences code

scripts/lua/modules/prefs_utils.lua

@@ -0,0 +1,95 @@
+--
+-- (C) 2014-15 - ntop.org
+--
+
+-- This file contains the description of all functions
+-- used to trigger host alerts
+
+local verbose = false
+
+-- notify ntopng upon preference changes
+function notifyNtopng(key)
+    if key == nil then return end
+    -- notify runtime ntopng configuration changes
+    if string.starts(key, 'nagios') then
+        if verbose then io.write('notifying ntopng upon nagios pref change\n') end
+        ntop.reloadNagiosConfig()
+    end
+end
+
+-- ############################################
+-- Runtime preference
+
+function prefsInputField(label, comment, key, value)
+  if(_GET[key] ~= nil) then
+    k = "ntopng.prefs."..key
+    v_s = _GET[key]
+    v = tonumber(v_s)
+    if(v ~= nil and (v > 0) and (v < 86400)) then
+      -- print(k.."="..v)
+      ntop.setCache(k, tostring(v))
+      value = v
+    elseif (v_s ~= nil) then
+      ntop.setCache(k, v_s)
+      value = v_s
+    end
+    -- least but not last we ascynchronously notify the runtime ntopng instance for changes
+    notifyNtopng(key)
+  end
+
+  print('<tr><td width=50%><strong>'..label..'</strong><p><small>'..comment..'</small></td>')
+
+  print [[
+	   <td class="input-group col-lg-3" align=right><form class="navbar-form navbar-right">]]
+print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
+print [[
+ <div class="input-group" >
+      <div >
+        <input type="text" class="form-control" name="]] print(key) print [[" value="]] print(value.."") print [[">
+      <span class="input-group-btn">
+        <button class="btn btn-default" type="submit">Save</button>
+      </span>
+      </div>
+    </div><!-- /input-group -->
+</form></td></tr>
+]]
+
+end
+
+function toggleTableButton(label, comment, on_label, on_value, on_color , off_label, off_value, off_color, submit_field, redis_key, disabled)
+  if(_GET[submit_field] ~= nil) then
+    ntop.setCache(redis_key, _GET[submit_field])
+    value = _GET[submit_field]
+    notifyNtopng(submit_field)
+  else
+    value = ntop.getCache(redis_key)
+  end
+  if (disabled == true) then
+    disabled = 'disabled = ""'
+  else
+    disabled = ""
+  end
+
+  -- Read it anyway to
+  if(value == off_value) then
+    rev_value  = on_value
+    on_active  = "btn-default"
+    off_active = "btn-"..off_color.." active"
+  else
+    rev_value  = off_value
+    on_active  = "btn-"..on_color.." active"
+    off_active = "btn-default"
+  end
+
+  if(label ~= "") then print('<tr><td width=50%><strong>'..label..'</strong><p><small>'..comment..'</small></td><td align=right>\n') end
+  print('<form>\n<div class="btn-group btn-toggle">')
+  print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
+  print('<input type=hidden name='..submit_field..' value='..rev_value..'>\n')
+  print('<button type="submit" '..disabled..' class="btn btn-sm  '..on_active..'">'..on_label..'</button>')
+  print('<button '..disabled..' class="btn btn-sm '..off_active..'">'..off_label..'</button></div>\n')
+  print('</form>\n')
+  if(label ~= "") then print('</td></tr>') end
+
+  return(value)
+end
+