Inherit rules from other selectors
npm install rework-inheritInherit mixin for rework.
Allows you to inherit __all__ the rules associated with a given selector.
``js
var inherit = require('rework-inherit')
var css = rework(inputCSS)
.use(inherit())
.toString()
`
#### Inherit(options{})
Option parameters:
* propertyRegExp - Regular expression to match the "inherit" property./^(inherit|extend)s?$/i
By default, it is , so it matches "inherit", "inherits", "extend", and "extends".extend
For example, if you only want to allow the keyword,/^extend$/
set the regular expression to .
#### Regular inherit
`css
.gray {
color: gray;
}
.text {
inherit: .gray;
}
`
yields:
`css`
.gray,
.text {
color: gray;
}
#### Multiple inherit
Inherit multiple selectors at the same time.
`css
.gray {
color: gray;
}
.black {
color: black;
}
.button {
inherit: .gray, .black;
}
`
yields:
`css
.gray,
.button {
color: gray;
}
.black,
.button {
color: black;
}
`
#### Placeholders
Any selector that includes a % is considered a placeholder.
Placeholders will not be output in the final CSS.
`css
%gray {
color: gray;
}
.text {
inherit: %gray;
}
`
yields:
`css`
.text {
color: gray;
}
#### Partial selectors
If you inherit a selector,
all rules that include that selector will be included as well.
`css
div button span {
color: red;
}
div button {
color: green;
}
button span {
color: pink;
}
.button {
inherit: button;
}
.link {
inherit: div button;
}
`
yields:
`css
div button span,
div .button span,
.link span {
color: red;
}
div button,
div .button,
.link {
color: green;
}
button span,
.button span {
color: pink;
}
`
#### Chained inheritance
`css
.button {
background-color: gray;
}
.button-large {
inherit: .button;
padding: 10px;
}
.button-large-red {
inherit: .button-large;
color: red;
}
`
yields:
`css
.button,
.button-large,
.button-large-red {
background-color: gray;
}
.button-large,
.button-large-red {
padding: 10px;
}
.button-large-red {
color: red;
}
`
#### Media Queries
Inheriting from inside a media query will create a copy of the declarations.
It will act like a "mixin".
Thus, with %placeholders, you won't have to use mixins at all.
Each type of media query will need its own declaration,
so there will be some inevitable repetition.
`css
.gray {
color: gray
}
@media (min-width: 320px) {
.button {
inherit: .gray;
}
}
@media (min-width: 320px) {
.link {
inherit: .gray;
}
}
`
yields:
`css
.gray {
color: gray;
}
@media (min-width: 320px) {
.button,
.link {
color: gray;
}
}
`
#### Substitute for Nested Syntax
Rework doesn't support nested syntax.
However, you can simulate nested syntax with inheritance.
`css
.no-touchevents %link-hover:hover {
text-decoration: underline;
}
a,
button {
inherit: %link-hover;
}
`
yields:
`css``
.no-touchevents a:hover,
.no-touchevents button:hover {
text-decoration: underline;
}
Thus, you have the features of nested syntax without the nesting.
- You can not inherit a rule that is inside a media query;
you can only inherit rules outside a media query.
If you find yourself in this situation,
just use placeholders instead.
The MIT License (MIT)
Copyright (c) 2013 Jonathan Ong me@jongleberry.com
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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
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THE SOFTWARE.