Class: LessNode

Inherits:
Object
  • Object
show all
Defined in:
lib/lessify/less_node.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(selector, parent, declarations = "") ⇒ LessNode

Returns a new instance of LessNode.



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# File 'lib/lessify/less_node.rb', line 5

def initialize(selector, parent, declarations = "")
	@selector = selector
	@parent = parent
	@declarations = declarations.strip
	@child_nodes = []
	update_declarations_array
	parent.child_nodes.push(self) unless parent.nil?
end

Instance Attribute Details

#child_nodes ⇒ Object

Returns the value of attribute child_nodes.



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# File 'lib/lessify/less_node.rb', line 3

def child_nodes
  @child_nodes
end

#dec_array ⇒ Object

Returns the value of attribute dec_array.



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# File 'lib/lessify/less_node.rb', line 3

def dec_array
  @dec_array
end

#declarations ⇒ Object

Returns the value of attribute declarations.



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# File 'lib/lessify/less_node.rb', line 3

def declarations
  @declarations
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/lessify/less_node.rb', line 3

def parent
  @parent
end

#selector ⇒ Object

Returns the value of attribute selector.



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# File 'lib/lessify/less_node.rb', line 3

def selector
  @selector
end

Instance Method Details

#add_child(selector_string, declarations) ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 26

def add_child(selector_string, declarations)
	selectors = selector_string.strip.split(" ")
	node = self
	selectors.each do |sel|
		if node.has_child?(sel)
			node = node.child(sel)
		else
			newNode = LessNode.new(sel, node)
			node = newNode
		end
	end		
	node.declarations += (" " + declarations.strip)
	node.declarations.strip!
	node.update_declarations_array
	return node
end

#child(selector) ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 22

def child(selector)
	@child_nodes.find { |cnode| cnode.selector == selector }
end

#find(selector) ⇒ Object

Search through the tree for selector



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# File 'lib/lessify/less_node.rb', line 60

def find(selector)
	node = child(selector)
	return node unless node.nil?
	@child_nodes.each { |cnode| 
		n = cnode.find(selector)
		return n unless n.nil?
	}
	return nil
end

#has_child?(selector) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lessify/less_node.rb', line 18

def has_child?(selector)
	@child_nodes.map { |cnode| cnode.selector == selector }.reduce(:|)
end

#move(sel_parent, sel_child) ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 70

def move(sel_parent, sel_child)
	parent_node = find(sel_parent)
	raise "#{sel_parent} not found" if parent_node.nil?
	
	child_node = find(sel_child)
	raise "#{sel_child} not found" if child_node.nil?
	
	node = parent_node
	until node.nil?
		raise "Move will create a cycle in the tree" if node == child_node
		node = node.parent
	end
	child_node.parent.child_nodes.delete(child_node)
	parent_node.child_nodes.push(child_node)
	child_node.parent = parent_node
end

#print_ancestry(selector) ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 87

def print_ancestry(selector)
	node = find(selector)
	puts "Printing ancestry for #{node}..."
	until node.nil?
		puts "\t#{node.to_s}"
		node = node.parent
	end
end

#to_scss(prefix = "", options = {}) ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 43

def to_scss(prefix = "", options = {})
	tab = options['tab'] || "\t"
	print_declarations = options[:print_declarations]
	print_declarations = true if print_declarations.nil?
	
	str = prefix + selector + " {"
	if (@child_nodes.size==0) && (!print_declarations || declarations.strip.size==0)
		str += "}\n"
	else
		str += "\n"
		str += (prefix + tab + declarations + "\n") if (print_declarations && declarations.strip.size>0)
		@child_nodes.each { |cnode| str += cnode.to_scss(prefix + tab, options) }
		str += prefix + "}\n"
	end
end

#update_declarations_array ⇒ Object 



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# File 'lib/lessify/less_node.rb', line 14

def update_declarations_array
	@dec_array = declarations.split(";").map { |d| d.strip }
end