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UIManager: add method for broadcasting an event to all widgets

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This commit is contained in:
Cosmin Gorgovan
2016-05-01 13:46:17 +01:00
parent 24a30cbda5
commit 18c0cee18f
1 changed files with 15 additions and 1 deletions
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16
frontend/ui/uimanager.lua
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@@ -347,7 +347,7 @@ function UIManager:quit()
end
end
-- transmit an event to registered widgets
-- transmit an event to an active widget
function UIManager:sendEvent(event)
if #self._window_stack == 0 then return end
-- top level widget has first access to the event
@@ -368,6 +368,20 @@ function UIManager:sendEvent(event)
end
end
-- transmit an event to all registered widgets
function UIManager:broadcastEvent(event)
-- the widget's event handler might close widgets in which case
-- a simple iterator like ipairs would skip over some entries
local i = 1
while (i <= #self._window_stack) do
local prev_widget = self._window_stack[i].widget
self._window_stack[i].widget:handleEvent(event)
if (self._window_stack[i].widget == prev_widget) then
i = i + 1
end
end
end
function UIManager:_checkTasks()
local now = { util.gettime() }
local now_us = now[1] * MILLION + now[2]