Class: Raw::ElementsFilter::Listener
- Inherits:
-
Object
- Object
- Raw::ElementsFilter::Listener
- Includes:
- REXML::StreamListener
- Defined in:
- lib/raw/compiler/filter/elements.rb
Overview
:nodoc: all
Constant Summary collapse
- PREFIX_RE =
/^#{Element.prefix}:/
- CAPITALIZED_RE =
/^[A-Z]/
Instance Attribute Summary collapse
-
#buffer ⇒ Object
Returns the value of attribute buffer.
Instance Method Summary collapse
- #cdata(content) ⇒ Object
- #comment(c) ⇒ Object
- #doctype(name, pub_sys, long_name, uri) ⇒ Object
-
#initialize ⇒ Listener
constructor
A new instance of Listener.
- #instruction(name, attributes) ⇒ Object
-
#is_element?(name) ⇒ Boolean
Check if a tag is an Element.
- #tag_end(name) ⇒ Object
- #tag_start(name, attributes) ⇒ Object
- #text(str) ⇒ Object
Constructor Details
#initialize ⇒ Listener
Returns a new instance of Listener.
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# File 'lib/raw/compiler/filter/elements.rb', line 30 def initialize super() @buffer = '' @stack = [] end |
Instance Attribute Details
#buffer ⇒ Object
Returns the value of attribute buffer.
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# File 'lib/raw/compiler/filter/elements.rb', line 28 def buffer @buffer end |
Instance Method Details
#cdata(content) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 141 def cdata(content) @buffer << "<![CDATA[#{content}]]>" end |
#comment(c) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 145 def comment(c) unless Template.strip_xml_comments @buffer << "<!--#{c}-->" end end |
#doctype(name, pub_sys, long_name, uri) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 151 def doctype(name, pub_sys, long_name, uri) @buffer << "<!DOCTYPE #{name} #{pub_sys} #{long_name} #{uri}>\n" end |
#instruction(name, attributes) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 137 def instruction(name, attributes) @buffer << "<?#{name}#{attributes}?>" end |
#is_element?(name) ⇒ Boolean
Check if a tag is an Element. If found, it also tries to auto-extend the klass. Returns the Element class if found.
Tries many classes in the following order:
-
Controller::XXX
-
:element_namespace)::XXX
-
Nitro::Element::XXX
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# File 'lib/raw/compiler/filter/elements.rb', line 81 def is_element?(name) controller = Controller.current return false unless name =~ PREFIX_RE or name =~ CAPITALIZED_RE name = name.gsub(PREFIX_RE,'').camelize if name =~ PREFIX_RE # Try to use Controller::xxx # gmosx, THINK: this looks a bit dangerous to me! begin # gmosx, FIXME: Class.by_name also returns top level # classes, how can we fix this? klass = constant("#{controller}::#{name}") rescue # drink it! end # Try to use the Controller's :element_namespace annotation if namespace = controller.ann(:self, :element_namespace) begin klass = constant("#{namespace}::#{name}") rescue # drink it! end end unless klass # Try to use Nitro::Element::xxx then ::xxx begin klass = constant("Nitro::Element::#{name}") rescue # drink it! end unless klass return false unless klass.kind_of? Class # Try to auto-extend. unless klass.ancestor? Element if Element.auto_extend klass.send(:include, ElementMixin) else return false end end return klass end |
#tag_end(name) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 63 def tag_end(name) if is_element? name obj, @buffer, @parent = @stack.pop @buffer << obj.render else @buffer << "</#{name}>" end end |
#tag_start(name, attributes) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 36 def tag_start(name, attributes) if klass = is_element?(name) obj = klass.new attributes.each do | k, v | obj.instance_variable_set("@#{k}", v) end @stack.push [obj, @buffer, @parent] @buffer = obj._text @parent.add_child(obj) if @parent @parent = obj else # This is a static element. attrs = [] attributes.each do | k, v | attrs << %|#{k}="#{v}"| end attrs = attrs.empty? ? nil : " #{attrs.join(' ')}" @buffer << "<#{name}#{attrs}>" end end |
#text(str) ⇒ Object
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# File 'lib/raw/compiler/filter/elements.rb', line 133 def text(str) @buffer << str end |