Class: Bbcode::Handler

Inherits:
Object
  • Object
show all
Defined in:
lib/bbcode/handler.rb

Direct Known Subclasses

HtmlHandler

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(element_handlers = nil) ⇒ Handler

Returns a new instance of Handler.



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# File 'lib/bbcode/handler.rb', line 7

def initialize( element_handlers = nil )
	@element_handlers = {}.with_indifferent_access
	@handler_element_stack = []
	self.clear
	register_element_handlers element_handlers unless element_handlers.blank?
	@interruption_stack = []
	self.locals = {}
end

Instance Attribute Details

#element_handlers ⇒ Object

Returns the value of attribute element_handlers.



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# File 'lib/bbcode/handler.rb', line 5

def element_handlers
  @element_handlers
end

#locals ⇒ Object

Returns the value of attribute locals.



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# File 'lib/bbcode/handler.rb', line 5

def locals
  @locals
end

Instance Method Details

#apply_element_handler_for_element(element) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 71

def apply_element_handler_for_element(element)
	callable = get_element_handler(element.is_a?(String) ? :"#text" : element.tagname)
	callable.arity == 2 ? callable.call(element, locals) : callable.call(element)
end

#clear ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 58

def clear
	@handler_element_stack.clear
	@handler_element_stack << HandlerElement.new( self, :"#document", {}, "" )
end

#continue_element(tagname) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 38

def continue_element( tagname )
	# TODO: Add better way to handle interrupts
	handler_element = @interruption_stack.pop
	start_element handler_element.tagname, handler_element.attributes, ""
end

#end_element(tagname, source) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 44

def end_element( tagname, source )
	raise "Unexpected end of #{tagname.inspect}, expected #{current_handler_element.tagname.inspect}" if tagname != current_handler_element.tagname
	current_handler_element.end_element source
	@handler_element_stack.pop
end

#get_document ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 54

def get_document
	@handler_element_stack.first.element
end

#get_element_handler(name) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 63

def get_element_handler( name )
	@element_handlers[name] || ->(element){ element.is_a?(String) ? element : element.source_wraps_content }
end

#interrupt_element(tagname) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 32

def interrupt_element( tagname )
	# TODO: Add better way to handle interrupts
	@interruption_stack << current_handler_element
	end_element tagname, ""
end

#register_element_handler(name, handler) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 22

def register_element_handler( name, handler )
	@element_handlers[name] = handler
end

#register_element_handlers(element_handlers) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 16

def register_element_handlers( element_handlers )
	element_handlers.each do |k, v|
		register_element_handler k, v
	end
end

#start_element(tagname, attributes, source) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 26

def start_element( tagname, attributes, source )
	handler_element = HandlerElement.new self, tagname, attributes, source
	current_handler_element.childs << handler_element
	@handler_element_stack << handler_element
end

#text(text) ⇒ Object 



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# File 'lib/bbcode/handler.rb', line 50

def text( text )
	current_handler_element.childs << text
end