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 | This Lua module is used on approximately 307,000 pages, or roughly 1% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandboxor/testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
 | This module depends on the following other modules:
|
 | This module uses TemplateStyles:
|
This module implements {{If preview}} and {{Preview warning}}. It helps templates/modules determine if they are being previewed.
Prefer implementing the template versions in other templates.
In a module to use the main(), you need to pass a frame table with an args table.
For the preview warning, use _warning().
local p = {}
local cfg = mw.loadData('Module:If preview/configuration')
--[[
main
This function returns either the first argument or second argument passed to
this module, depending on whether the page is being previewed.
]]
function p.main(frame)
if cfg.preview then
return frame.args[1] or ''
else
return frame.args[2] or ''
end
end
--[[
pmain
This function returns either the first argument or second argument passed to
this module's parent (i.e. template using this module), depending on whether it
is being previewed.
]]
function p.pmain(frame)
return p.main(frame:getParent())
end
local function warning_text(warning)
return mw.ustring.format(
cfg.warning_infrastructure,
cfg.templatestyles,
warning
)
end
function p._warning(args)
local warning = args[1] and args[1]:match('^%s*(.-)%s*$') or ''
if warning == '' then
return warning_text(cfg.missing_warning)
end
if not cfg.preview then return '' end
return warning_text(warning)
end
--[[
warning
This function returns a "preview warning", which is the first argument marked
up with HTML and some supporting text, depending on whether the page is being previewed.
disabled since we'll implement the template version in general
]]
--function p.warning(frame)
-- return p._warning(frame.args)
--end
--[[
warning, but for pass-through templates like {{preview warning}}
]]
function p.pwarning(frame)
return p._warning(frame:getParent().args)
end
return p