module Compass::SassExtensions::Functions::Selectors
Constants
- COMMA_SEPARATOR
Public Instance Methods
append_selector(selector, to_append)
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Permute two selectors, the first may be comma delimited. The end result is a new selector that is the equivalent of nesting the second selector under the first one in a sass file and preceding it with an &. To illustrate, the following mixins are equivalent:
mixin-a(!selector, !to_append)¶ ↑
#{!selector} &#{!to_append} width: 2px
mixin-b(!selector, !to_append)¶ ↑
#{append_selector(!selector, !to_append)} width: 2px
# File lib/compass/sass_extensions/functions/selectors.rb, line 35 def append_selector(selector, to_append) ancestors = selector.value.split(COMMA_SEPARATOR) descendants = to_append.value.split(COMMA_SEPARATOR) nested = ancestors.map{|a| descendants.map{|d| "#{a}#{d}"}.join(", ")}.join(", ") Sass::Script::String.new(nested) end
headers(from = nil, to = nil)
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Return the header selectors for the levels indicated Defaults to all headers h1 through h6 For example: headers(all) => h1, h2, h3, h4, h5, h6 headers(4) => h1, h2, h3, h4 headers(2,4) => h2, h3, h4
# File lib/compass/sass_extensions/functions/selectors.rb, line 48 def headers(from = nil, to = nil) if from && !to if from.is_a?(Sass::Script::String) && from.value == "all" from = Sass::Script::Number.new(1) to = Sass::Script::Number.new(6) else to = from from = Sass::Script::Number.new(1) end else from ||= Sass::Script::Number.new(1) to ||= Sass::Script::Number.new(6) end Sass::Script::String.new((from.value..to.value).map{|n| "h#{n}"}.join(", ")) end
Also aliased as: headings
nest(*arguments)
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Permute multiple selectors each of which may be comma delimited, the end result is a new selector that is the equivalent of nesting each under the previous selector. To illustrate, the following mixins are equivalent:
mixin-a(!selector1, !selector2, !selector3)¶ ↑
#{!selector1} #{selector2} #{selector3} width: 2px
mixin-b(!selector1, !selector2)¶ ↑
#{nest(!selector, !selector2, !selector3)} width: 2px
# File lib/compass/sass_extensions/functions/selectors.rb, line 15 def nest(*arguments) nested = arguments.map{|a| a.value}.inject do |memo,arg| ancestors = memo.split(COMMA_SEPARATOR) descendants = arg.split(COMMA_SEPARATOR) ancestors.map{|a| descendants.map{|d| "#{a} #{d}"}.join(", ")}.join(", ") end Sass::Script::String.new(nested) end