Resolve "Merge the best from 7.40 branch"

SabrehavenOTClient/modules/corelib/globals.lua

@@ -0,0 +1,76 @@
+-- @docvars @{
+
+-- root widget
+rootWidget = g_ui.getRootWidget()
+modules = package.loaded
+
+-- G is used as a global table to save variables in memory between reloads
+G = G or {}
+
+-- @}
+
+-- @docfuncs @{
+
+function scheduleEvent(callback, delay)
+  local desc = "lua"
+  local info = debug.getinfo(2, "Sl")
+  if info then
+    desc = info.short_src .. ":" .. info.currentline
+  end
+  local event = g_dispatcher.scheduleEvent(desc, callback, delay)
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+function addEvent(callback, front)
+  local desc = "lua"
+  local info = debug.getinfo(2, "Sl")
+  if info then
+    desc = info.short_src .. ":" .. info.currentline
+  end
+  local event = g_dispatcher.addEvent(desc, callback, front)
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+function cycleEvent(callback, interval)
+  local desc = "lua"
+  local info = debug.getinfo(2, "Sl")
+  if info then
+    desc = info.short_src .. ":" .. info.currentline
+  end
+  local event = g_dispatcher.cycleEvent(desc, callback, interval)
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+function periodicalEvent(eventFunc, conditionFunc, delay, autoRepeatDelay)
+  delay = delay or 30
+  autoRepeatDelay = autoRepeatDelay or delay
+
+  local func
+  func = function()
+    if conditionFunc and not conditionFunc() then
+      func = nil
+      return
+    end
+    eventFunc()
+    scheduleEvent(func, delay)
+  end
+
+  scheduleEvent(function()
+    func()
+  end, autoRepeatDelay)
+end
+
+function removeEvent(event)
+  if event then
+    event:cancel()
+    event._callback = nil
+  end
+end
+
+-- @}