Class: Utopia::Content::Tag

Inherits:
Object
  • Object
show all
Defined in:
lib/utopia/content/tag.rb

Overview

This represents an individual SGML tag, e.g. <a>, </a> or <a />, with attributes. Attribute values must be escaped.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, attributes = {}) ⇒ Tag

Returns a new instance of Tag.



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# File 'lib/utopia/content/tag.rb', line 38

def initialize(name, attributes = {})
	@name = name
	@attributes = attributes
	@closed = false
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/utopia/content/tag.rb', line 45

def attributes
  @attributes
end

#closed ⇒ Object

Returns the value of attribute closed.



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# File 'lib/utopia/content/tag.rb', line 46

def closed
  @closed
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/utopia/content/tag.rb', line 44

def name
  @name
end

Class Method Details

.closed(name, attributes = {}) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 31

def self.closed(name, attributes = {})
	tag = Tag.new(name, attributes)
	tag.closed = true
	
	return tag
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 25

def == other
	if Tag === other
		[@name, @attributes, @closed] == [other.name, other.attributes, other.closed]
	end
end

#[](key) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 48

def [](key)
	@attributes[key]
end

#to_hash ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 58

def to_hash
	@attributes
end

#to_html(content = nil, buffer = StringIO.new) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 52

def to_html(content = nil, buffer = StringIO.new)
	write_full_html(buffer, content)
	
	return buffer.string
end

#to_s(content = nil) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 62

def to_s(content = nil)
	buffer = StringIO.new
	write_full_html(buffer, content)
	return buffer.string
end

#write_close_html(buffer) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 87

def write_close_html(buffer)
	buffer.write "</#{name}>"
end

#write_full_html(buffer, content = nil) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 91

def write_full_html(buffer, content = nil)
	if @closed && content == nil
		write_open_html(buffer, true)
	else
		write_open_html(buffer)
		buffer.write(content)
		write_close_html(buffer)
	end
end

#write_open_html(buffer, terminate = false) ⇒ Object 



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# File 'lib/utopia/content/tag.rb', line 68

def write_open_html(buffer, terminate = false)
	buffer ||= StringIO.new 
	buffer.write "<#{name}"

	@attributes.each do |key, value|
		if value
			buffer.write " #{key}=\"#{value}\""
		else
			buffer.write " #{key}"
		end
	end
	
	if terminate
		buffer.write "/>"
	else
		buffer.write ">"
	end
end