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Contents
require 'volt/page/bindings/base_binding'
require 'volt/page/bindings/html_safe/string_extension'
module Volt
class ContentBinding < BaseBinding
HTML_ESCAPE_REGEXP = /[&"'><\n]/
HTML_ESCAPE = { '&' => '&', '>' => '>', '<' => '<', '"' => '"', "'" => ''', "\n" => "<br />\n" }
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
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
def html_escape(str)
# https://github.com/opal/opal/issues/798
str.gsub(HTML_ESCAPE_REGEXP) do |char|
HTML_ESCAPE[char]
end
end
def remove
if @computation
@computation.stop
@computation = nil
end
super
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems