Difference between revisions of "Module:HtmlBuilder"
From Creation History Wiki
(add css support) |
(add addClass method and support for unclosed tags) |
||
| Line 44: | Line 44: | ||
table.insert(ret, tostring(node)) | table.insert(ret, tostring(node)) | ||
end | end | ||
| − | if t.tagName then | + | if t.tagName and not t.unclosed then |
table.insert(ret, '</' .. t.tagName .. '>') | table.insert(ret, '</' .. t.tagName .. '>') | ||
end | end | ||
| Line 71: | Line 71: | ||
table.insert(t.nodes, builder) | table.insert(t.nodes, builder) | ||
return builder | return builder | ||
| + | end | ||
| + | |||
| + | function getAttr(t, name) | ||
| + | for i, attr in ipairs(t.attributes) do | ||
| + | if attr.name == name then | ||
| + | return attr | ||
| + | end | ||
| + | end | ||
end | end | ||
| Line 79: | Line 87: | ||
return t | return t | ||
end | end | ||
| − | + | ||
| − | + | local attr = getAttr(t, name) | |
| − | + | if attr then | |
| − | + | attr.val = val | |
| − | + | else | |
| − | + | table.insert(t.attributes, {name = name, val = val}) | |
end | end | ||
| + | |||
| + | return t | ||
| + | end | ||
| − | + | metatable.addClass = function(t, class) | |
| + | local attr = getAttr(t, 'class') | ||
| + | if attr then | ||
| + | attr.val = attr.val .. ' ' .. class | ||
| + | else | ||
| + | t.attr('class', class) | ||
| + | end | ||
| + | |||
return t | return t | ||
end | end | ||
| Line 128: | Line 146: | ||
builder.tagName = tagName | builder.tagName = tagName | ||
builder.parent = args.parent | builder.parent = args.parent | ||
| + | builder.unclosed = args.unclosed or false | ||
return builder | return builder | ||
end | end | ||
return HtmlBuilder | return HtmlBuilder | ||
Revision as of 03:35, 28 February 2013
Documentation for this module may be created at Module:HtmlBuilder/doc
-- Experimental module for building complex HTML (e.g. infoboxes, navboxes) using a fluent interface
local HtmlBuilder = {}
local metatable = {}
metatable.__index = function(t, key)
local ret = rawget(t, key)
if ret then
return ret
end
ret = metatable[key]
if type(ret) == 'function' then
return function(...)
return ret(t, ...)
end
else
return ret
end
end
metatable.__tostring = function(t)
local ret = {}
if t.tagName then
table.insert(ret, '<' .. t.tagName)
for i, attr in ipairs(t.attributes) do
table.insert(ret, ' ' .. attr.name .. '="' .. attr.val .. '"')
end
if #t.styles > 0 then
table.insert(ret, ' style="')
for i, prop in ipairs(t.styles) do
if type(prop) == 'string' then -- added with cssText()
table.insert(ret, prop .. ';')
else -- added with css()
table.insert(ret, prop.name .. ':' .. prop.val .. ';')
end
end
table.insert(ret, '"')
end
table.insert(ret, '>')
end
for i, node in ipairs(t.nodes) do
table.insert(ret, tostring(node))
end
if t.tagName and not t.unclosed then
table.insert(ret, '</' .. t.tagName .. '>')
end
return table.concat(ret, '')
end
metatable.wikitext = function(t, ...)
local vals = {...}
for i = 1, #vals do
if vals[i] then
table.insert(t.nodes, vals[i])
end
end
return t
end
metatable.newline = function(t)
table.insert(t.nodes, '\n')
return t
end
metatable.tag = function(t, tagName, args)
args = args or {}
args.parent = t
local builder = HtmlBuilder.create(tagName, args)
table.insert(t.nodes, builder)
return builder
end
function getAttr(t, name)
for i, attr in ipairs(t.attributes) do
if attr.name == name then
return attr
end
end
end
metatable.attr = function(t, name, val)
-- if caller sets the style attribute explicitly, then replace all styles previously added with css() and cssText()
if name == 'style' then
t.styles = {val}
return t
end
local attr = getAttr(t, name)
if attr then
attr.val = val
else
table.insert(t.attributes, {name = name, val = val})
end
return t
end
metatable.addClass = function(t, class)
local attr = getAttr(t, 'class')
if attr then
attr.val = attr.val .. ' ' .. class
else
t.attr('class', class)
end
return t
end
metatable.css = function(t, name, val)
for i, prop in ipairs(t.styles) do
if prop.name == name then
prop.val = val
return t
end
end
table.insert(t.styles, {name = name, val = val})
return t
end
metatable.cssText = function(t, css)
table.insert(t.styles, css)
return t
end
metatable.done = function(t)
return t.parent or t
end
metatable.allDone = function(t)
while t.parent do
t = t.parent
end
return t
end
function HtmlBuilder.create(tagName, args)
args = args or {}
local builder = {}
setmetatable(builder, metatable)
builder.nodes = {}
builder.attributes = {}
builder.styles = {}
builder.tagName = tagName
builder.parent = args.parent
builder.unclosed = args.unclosed or false
return builder
end
return HtmlBuilder
