Class: Malline::Template

Inherits:
Object
  • Object
show all
Defined in:
lib/malline/template.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(view, opts) ⇒ Template

Returns a new instance of Template.



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# File 'lib/malline/template.rb', line 25

def initialize view, opts
	@view = view
	@whitespace = false
	@path = 'Malline template'
	@options = opts
	@short_tag_excludes = []
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/malline/template.rb', line 20

def options
  @options
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/malline/template.rb', line 23

def path
  @path
end

#short_tag_excludes ⇒ Object

Returns the value of attribute short_tag_excludes.



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# File 'lib/malline/template.rb', line 21

def short_tag_excludes
  @short_tag_excludes
end

#whitespace ⇒ Object

Returns the value of attribute whitespace.



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# File 'lib/malline/template.rb', line 22

def whitespace
  @whitespace
end

Class Method Details

.html_escape(s) ⇒ Object

These two are stolen from ERB © 1999-2000,2002,2003 Masatoshi SEKI



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# File 'lib/malline/template.rb', line 35

def self.html_escape(s)
	s.to_s.gsub(/&/, "&amp;").gsub(/\"/, "&quot;").gsub(/>/, "&gt;").gsub(/</, "&lt;")
end

.url_encode(s) ⇒ Object 



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# File 'lib/malline/template.rb', line 38

def self.url_encode(s)
	s.to_s.gsub(/[^a-zA-Z0-9_\-.]/n){ sprintf("%%%02X", $&.unpack("C")[0]) }
end

Instance Method Details

#add_text(*values) ⇒ Object 



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# File 'lib/malline/template.rb', line 54

def add_text *values
	@dom << ' ' if @whitespace
	@dom << Template.html_escape(values.join(' '))
end

#add_unescaped_text(value) ⇒ Object 



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# File 'lib/malline/template.rb', line 59

def add_unescaped_text value
	@dom << ' ' if @whitespace
	@dom << value.to_s unless value.nil?
end

#execute(dom, tpl = nil, &block) ⇒ Object

Changes dom to active @dom, and executes tpl / block



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# File 'lib/malline/template.rb', line 43

def execute dom, tpl = nil, &block
	tmp = @dom
	@dom = dom
	if block_given?
		@view.instance_eval &block
	else
		@view.instance_eval tpl, @path
	end
	@dom = tmp
end

#helper(helper, *args, &block) ⇒ Object 



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# File 'lib/malline/template.rb', line 64

def helper helper, *args, &block
	tmp = @view.send(helper, *args, &block)
	@dom << ' ' if @whitespace
	@dom << tmp.to_s
	tmp
end

#render(dom = nil) ⇒ Object

Render the xml tree at dom or root



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# File 'lib/malline/template.rb', line 93

def render dom = nil
	(dom || @dom).inject('') do |out, tag|
		if tag.is_a?(String)
			out << tag
		else
			out << ' ' if tag[:whitespace]
			out << "<#{tag[:name]}"
			out << tag[:attrs].inject(''){|s, a| s += " #{a.first}=\"#{Template.html_escape(a.last)}\""}

			if tag[:children].empty?
				if @short_tag_excludes.include?(tag[:name])
					out << "></#{tag[:name]}>"
				else
					out << '/>'
				end
			else
				out << '>'
				out << render(tag[:children])
				out << "</#{tag[:name]}>"
			end
		end
	end
end

#run(tpl = nil, &block) ⇒ Object

Execute and render a text or block



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# File 'lib/malline/template.rb', line 118

def run tpl = nil, &block
	tmp = []
	execute tmp, tpl, &block
	render tmp
end

#tag(s, *args, &block) ⇒ Object 



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# File 'lib/malline/template.rb', line 71

def tag s, *args, &block
	tag = { :name => s.to_s, :attrs => {}, :children => [] }

	tag[:whitespace] = true if @whitespace
	whitespace = @whitespace
	@whitespace = true if args.delete(:whitespace)

	if args.last.is_a?(Hash)
		tag[:attrs].merge!(args.pop)
	end

	txt = args.flatten.join('')
	tag[:children] << Template.html_escape(txt) unless txt.empty?

	@dom << tag
	execute tag[:children], &block if block_given?
	@whitespace = whitespace

	ViewProxy.new self, tag
end