forked from OpenNeo/impress
51 lines
1.3 KiB
Ruby
51 lines
1.3 KiB
Ruby
module HeadJsHelper
|
|
JAVASCRIPT_LIBRARIES = {}
|
|
YAML.load_file(Rails.root.join('config', 'javascript_libraries.yml')).each do |name, src|
|
|
JAVASCRIPT_LIBRARIES[name.to_sym] = src
|
|
end
|
|
|
|
def html5
|
|
content_for :html5, "<!--[if lt IE 9]>#{javascript_tag(JAVASCRIPT_LIBRARIES[:html5])}<![endif]-->".html_safe
|
|
end
|
|
|
|
def javascript_chain(*javascripts)
|
|
# two-dimensional array: list of chains
|
|
@javascript_chains ||= []
|
|
@javascript_chains << javascripts
|
|
end
|
|
|
|
def javascript_chains
|
|
if @javascript_chains
|
|
javascript_include_tag('head') + "\n" + javascript_chains_tag(@javascript_chains)
|
|
end
|
|
end
|
|
|
|
def javascript_chain_line(chain)
|
|
chain_args = chain.map {
|
|
|script_name| javascript_library_path(script_name).inspect
|
|
}.join(', ')
|
|
"head.js(#{chain_args});"
|
|
end
|
|
|
|
def javascript_chains_tag(chains)
|
|
output_js do |js|
|
|
chains.each do |chain|
|
|
js << javascript_chain_line(chain)
|
|
end
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def javascript_library_path(script_name)
|
|
script_name.is_a?(Symbol) ? JAVASCRIPT_LIBRARIES[script_name] : javascript_path(script_name)
|
|
end
|
|
|
|
def output_js(&block)
|
|
javascript_tag(safe_output(&block))
|
|
end
|
|
|
|
def safe_output(&block)
|
|
[].tap(&block).join("\n").html_safe
|
|
end
|
|
end
|