Implementing BEM Generator/Helper
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components/00_Global/_bemGenerator.styl
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85
components/00_Global/_bemGenerator.styl
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/*
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* This is set of mixins to help generating
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* CSS classes according to the Block__Element--Modifier pattern.
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* It also helps nesting those classes in any fashion imaganible
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* and still produces clean BEM CSS
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*/
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_css-prefix = 'RV'
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_element-modifier = ()
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/*
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* Gets the selector of the parent class
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*/
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_get_parent_selector()
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return split(' ', selector())[-1]
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/*
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* Gets the selector of the current block
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*/
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_get_block_selector()
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return split('__', _get_parent_selector())[0]
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/*
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* Generates a CSS class for an
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* Block according to BEM
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*/
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RV-Block(name)
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{_css-prefix}-{name}
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{block}
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/*
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* Generates a CSS class for an block modifier
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* according to BEM.
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*/
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RV-Block__Modifier(name)
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&{get_block_selector()}--{name}
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{block}
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/*
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* Generates an CSS class for an element
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* according to BEM. Also minds the element modifiers
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* For more see RV-Element___Modifier
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*/
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RV-Element(name)
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block-selector = get_block_selector()
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// Are we in a block?
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if length(block-selector) > 0
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//Create Selector and output the CSS for the element
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{block-selector}__{name}
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{block}
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// Checking for modifiers
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l = length(_element-modifier) - 1
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for i in range(0, l)
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modifier = pop(_element-modifier)
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callback = modifier['callback']
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// Calling the modifiers block,
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// passing the name of the element
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callback(
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element: name,
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name: modifier['name'],
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modifier_block: modifier['block']
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)
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/*
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* Generates a CSS class for an element modifier
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* according to BEM. These are ment to be part of the
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* content block of an element and since child-mixins
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* are called first there is no way of knowing what the
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* current element is named. To solve this, we store
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* a callback for the modifier and add the element name
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* from RV-Element
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*/
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RV-Element__Modifier(name)
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callback = @(element, name, modifier_block){
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&{get_block_selector()}__{element}--{name}{
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{modifier_block}
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}
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}
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push(_element-modifier, {
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callback: callback
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name: name
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block: block,
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})
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@import './_bemGenerator'
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@import './_selectorHook'
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@import './_elementAmount'
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