Difference between revisions of "Module:List"

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(Created page with "-- This module outputs different kinds of lists. At the moment, bulleted, -- unbulleted, horizontal, ordered, and horizontal ordered lists are supported. local libUtil = requ...")
 
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-- List style types for ordered lists
 
-- List style types for ordered lists
 
-- This could be "1, 2, 3", "a, b, c", or a number of others. The list style
 
-- This could be "1, 2, 3", "a, b, c", or a number of others. The list style
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-- List tag type
 
-- List tag type
 
if listType == 'ordered' or listType == 'horizontal_ordered' then
 
if listType == 'ordered' or listType == 'horizontal_ordered' then
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table.insert(data.items, item)
 
table.insert(data.items, item)
 
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return data
 
return data
 
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Latest revision as of 14:56, 24 July 2020

This module outputs various kinds of lists. At present, it supports bulleted lists, unbulleted lists, horizontal lists, ordered lists (numbered or alphabetical), and horizontal ordered lists. It allows for easy CSS styling of the list or of the individual list items.

Usage

{{#invoke:list|function|first item|second item|third item|…}}

Parameters

Positional parameters (|1=, |2=, |3=, etc.) 
These are the list items. If no list items are present, the module will output nothing.
|start= 
Sets the start item for ordered lists. This can be a start number for numbered lists, or a start letter for alphabetical lists. Horizontal ordered lists only support numbers.
|type= 
The type of marker used in ordered lists. Possible values are 1 for numbers (default), A for uppercase letters, a for lowercase letters, I for uppercase Roman numerals, and i for lowercase Roman numerals. Not supported in horizontal ordered lists. See also the |list_style_type= parameter.
|list_style_type= 
The type of marker used in ordered lists. This uses CSS styling, and has more types available than the |type= parameter, which uses an HTML attribute. Possible values are listed at MDN's list-style-type page. Support may vary by browser. |list-style-type= is an alias for this parameter.
|class= 
A custom class for the <div>…</div> tags surrounding the list, e.g. plainlinks.
|style= 
A custom CSS style for the <div>…</div> tags surrounding the list, e.g. font-size:90%;.
|list_style= 
A custom CSS style for the list itself. The format is the same as for the |style= parameter.
|item_style= 
A custom CSS style for all of the list items (the <li>…</li> tags). The format is the same as for the |style= parameter.
|item[n]_style= 
Custom CSS styles for each of the list items. The format is the same as for the |style= parameter.
|item[n]_value= 
Custom value for the given list item. List items following the one given will increment from the specified value. The value should be a positive integer. Note that this option only has an effect on ordered lists.
|indent= 
This parameter indents the list, for horizontal and horizontal ordered lists only. The value must be a number, e.g. 2. The indent is calculated in em and is 1.6 times the value specified. If no indent is specified, the default is zero.

Arguments passed from parent template

{{#invoke:list|function}}
Functions
Function name Style Renders as Template using the function
bulleted Bulleted lists
  • First item
  • Second item
  • Third item
 {{bulleted list}}
unbulleted Unbulleted lists
  • First item
  • Second item
  • Third item
 {{unbulleted list}}
horizontal Horizontal bulleted lists
  • First item
  • Second item
  • Third item
 {{hlist}}
ordered Ordered lists (numbered lists and alphabetical lists)
  1. First item
  2. Second item
  3. Third item
 {{ordered list}}
horizontal_ordered Horizontal ordered lists
  1. First item
  2. Second item
  3. Third item

Examples

Markup Renders as
Bulleted lists
{{#invoke:list|bulleted|First item|Second item|Third item}}
  • First item
  • Second item
  • Third item
{{#invoke:list|bulleted|First item|Second item|Third item|item_style=color:blue;}}
  • First item
  • Second item
  • Third item
{{#invoke:list|bulleted|First item|Second item|Third item|item1_style=background-color:yellow;|item2_style=background-color:silver;}}
  • First item
  • Second item
  • Third item
Markup Renders as
Unbulleted lists
{{#invoke:list|unbulleted|First item|Second item|Third item}}
  • First item
  • Second item
  • Third item
{{#invoke:list|unbulleted|First item|Second item|Third item|item_style=color:blue;}}
  • First item
  • Second item
  • Third item
{{#invoke:list|unbulleted|First item|Second item|Third item|item1_style=background-color:yellow;|item2_style=background-color:silver;}}
  • First item
  • Second item
  • Third item
Markup Renders as
Horizontal lists
{{#invoke:list|horizontal|First item|Second item|Third item}}
  • First item
  • Second item
  • Third item
{{#invoke:list|horizontal|First item|Second item|Third item|indent=2}}
  • First item
  • Second item
  • Third item
Markup Renders as
Ordered lists
{{#invoke:list|ordered|First item|Second item|Third item}}
  1. First item
  2. Second item
  3. Third item
{{#invoke:list|ordered|First item|Second item|Third item|start=3}}
  1. First item
  2. Second item
  3. Third item
{{#invoke:list|ordered|First item|Second item|Third item|type=i}
  1. First item
  2. Second item
  3. Third item
{{#invoke:list|ordered|First item|Second item|Third item|list_style_type=lower-greek}}
  1. First item
  2. Second item
  3. Third item
Markup Renders as
Horizontal ordered lists
{{#invoke:list|horizontal_ordered|First item|Second item|Third item}}
  1. First item
  2. Second item
  3. Third item
{{#invoke:list|horizontal_ordered|First item|Second item|Third item|start=3}}
  1. First item
  2. Second item
  3. Third item
{{#invoke:list|horizontal_ordered|First item|Second item|Third item|indent=2}}
  1. First item
  2. Second item
  3. Third item
-- This module outputs different kinds of lists. At the moment, bulleted,
-- unbulleted, horizontal, ordered, and horizontal ordered lists are supported.

local libUtil = require('libraryUtil')
local checkType = libUtil.checkType
local mTableTools = require('Module:TableTools')

local p = {}

local listTypes = {
	['bulleted'] = true,
	['unbulleted'] = true,
	['horizontal'] = true,
	['ordered'] = true,
	['horizontal_ordered'] = true
}

function p.makeListData(listType, args)
	-- Constructs a data table to be passed to p.renderList.
	local data = {}

	-- Classes
	data.classes = {}
	if listType == 'horizontal' or listType == 'horizontal_ordered' then
		table.insert(data.classes, 'hlist hlist-separated')
	elseif listType == 'unbulleted' then
		table.insert(data.classes, 'plainlist')
	end
	table.insert(data.classes, args.class)

	-- Main div style
	data.style = args.style

	-- Indent for horizontal lists
	if listType == 'horizontal' or listType == 'horizontal_ordered' then
		local indent = tonumber(args.indent)
		indent = indent and indent * 1.6 or 0
		if indent > 0 then
			data.marginLeft = indent .. 'em'
		end
	end

	-- List style types for ordered lists
	-- This could be "1, 2, 3", "a, b, c", or a number of others. The list style
	-- type is either set by the "type" attribute or the "list-style-type" CSS
	-- property.
	if listType == 'ordered' or listType == 'horizontal_ordered' then 
		data.listStyleType = args.list_style_type or args['list-style-type']
		data.type = args['type']

		-- Detect invalid type attributes and attempt to convert them to
		-- list-style-type CSS properties.
		if data.type 
			and not data.listStyleType
			and not tostring(data.type):find('^%s*[1AaIi]%s*$')
		then
			data.listStyleType = data.type
			data.type = nil
		end
	end

	-- List tag type
	if listType == 'ordered' or listType == 'horizontal_ordered' then
		data.listTag = 'ol'
	else
		data.listTag = 'ul'
	end

	-- Start number for ordered lists
	data.start = args.start
	if listType == 'horizontal_ordered' then
		-- Apply fix to get start numbers working with horizontal ordered lists.
		local startNum = tonumber(data.start)
		if startNum then
			data.counterReset = 'listitem ' .. tostring(startNum - 1)
		end
	end

	-- List style
	 -- ul_style and ol_style are included for backwards compatibility. No
	 -- distinction is made for ordered or unordered lists.
	data.listStyle = args.list_style

	-- List items
	-- li_style is included for backwards compatibility. item_style was included
	-- to be easier to understand for non-coders.
	data.itemStyle = args.item_style or args.li_style
	data.items = {}
	for i, num in ipairs(mTableTools.numKeys(args)) do
		local item = {}
		item.content = args[num]
		item.style = args['item' .. tostring(num) .. '_style']
			or args['item_style' .. tostring(num)]
		item.value = args['item' .. tostring(num) .. '_value']
			or args['item_value' .. tostring(num)]
		table.insert(data.items, item)
	end

	return data
end

function p.renderList(data)
	-- Renders the list HTML.
	
	-- Return the blank string if there are no list items.
	if type(data.items) ~= 'table' or #data.items < 1 then
		return ''
	end
	
	-- Render the main div tag.
	local root = mw.html.create('div')
	for i, class in ipairs(data.classes or {}) do
		root:addClass(class)
	end
	root:css{['margin-left'] = data.marginLeft}
	if data.style then
		root:cssText(data.style)
	end

	-- Render the list tag.
	local list = root:tag(data.listTag or 'ul')
	list
		:attr{start = data.start, type = data.type}
		:css{
			['counter-reset'] = data.counterReset,
			['list-style-type'] = data.listStyleType
		}
	if data.listStyle then
		list:cssText(data.listStyle)
	end

	-- Render the list items
	for i, t in ipairs(data.items or {}) do
		local item = list:tag('li')
		if data.itemStyle then
			item:cssText(data.itemStyle)
		end
		if t.style then
			item:cssText(t.style)
		end
		item
			:attr{value = t.value}
			:wikitext(t.content)
	end

	return tostring(root)
end

function p.renderTrackingCategories(args)
	local isDeprecated = false -- Tracks deprecated parameters.
	for k, v in pairs(args) do
		k = tostring(k)
		if k:find('^item_style%d+$') or k:find('^item_value%d+$') then
			isDeprecated = true
			break
		end
	end
	local ret = ''
	if isDeprecated then
		ret = ret .. '[[Category:List templates with deprecated parameters]]'
	end
	return ret
end

function p.makeList(listType, args)
	if not listType or not listTypes[listType] then
		error(string.format(
			"bad argument #1 to 'makeList' ('%s' is not a valid list type)",
			tostring(listType)
		), 2)
	end
	checkType('makeList', 2, args, 'table')
	local data = p.makeListData(listType, args)
	local list = p.renderList(data)
	local trackingCategories = p.renderTrackingCategories(args)
	return list .. trackingCategories
end

for listType in pairs(listTypes) do
	p[listType] = function (frame)
		local mArguments = require('Module:Arguments')
		local origArgs = mArguments.getArgs(frame)
		-- Copy all the arguments to a new table, for faster indexing.
		local args = {}
		for k, v in pairs(origArgs) do
			args[k] = v
		end
		return p.makeList(listType, args)
	end
end

return p
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