Class: Volt::ContentBinding
- Inherits:
-
BaseBinding
- Object
- BaseBinding
- Volt::ContentBinding
- Defined in:
- lib/volt/page/bindings/content_binding.rb
Constant Summary collapse
- HTML_ESCAPE_REGEXP =
/[&"'><\n]/
- HTML_ESCAPE =
{ '&' => '&', '>' => '>', '<' => '<', '"' => '"', "'" => ''', "\n" => "<br />\n" }
Instance Attribute Summary
Attributes inherited from BaseBinding
#binding_name, #context, #target, #volt_app
Instance Method Summary collapse
- #html_escape(str) ⇒ Object
-
#initialize(volt_app, target, context, binding_name, getter) ⇒ ContentBinding
constructor
A new instance of ContentBinding.
- #remove ⇒ Object
- #update(value) ⇒ Object
Methods inherited from BaseBinding
#browser, #dom_section, #getter_fail, #remove_anchors
Constructor Details
#initialize(volt_app, target, context, binding_name, getter) ⇒ ContentBinding
Returns a new instance of ContentBinding.
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# File 'lib/volt/page/bindings/content_binding.rb', line 9 def initialize(volt_app, target, context, binding_name, getter) super(volt_app, target, context, binding_name) @getter = getter # Listen for changes @computation = lambda do begin @context.instance_eval(&getter) rescue => e getter_fail(e) '' end end.watch_and_resolve!( method(:update), method(:getter_fail) ) end |
Instance Method Details
#html_escape(str) ⇒ Object
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# File 'lib/volt/page/bindings/content_binding.rb', line 49 def html_escape(str) # https://github.com/opal/opal/issues/798 str.gsub(HTML_ESCAPE_REGEXP) do |char| HTML_ESCAPE[char] end.gsub(' ', " \u00A0").gsub("\n ", "\n\u00A0") end |
#remove ⇒ Object
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# File 'lib/volt/page/bindings/content_binding.rb', line 56 def remove if @computation @computation.stop @computation = nil end super end |
#update(value) ⇒ Object
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# File 'lib/volt/page/bindings/content_binding.rb', line 27 def update(value) value = (value || '').to_s unless value.is_a?(String) html_safe = value.html_safe? # Exception values display the exception as a string value = value.to_s # Update the html in this section # TODO: Move the formatter into another class. # The html safe check lets us know that if string can be rendered # directly as html unless html_safe # Escape any < and >, but convert newlines to br's, and fix quotes and value = html_escape(value) end # Assign the content dom_section.html = value # dom_section.text = value end |