module PowerTools
  module ActionView
    
    def js(stuff)
      stuff.respond_to?(:to_json) ? stuff.to_json : stuff.inspect.to_json
    end
    
    def button_tag(content, options={})
      options = { 
        :type => 'submit'
      }.merge(options)
      
      content_tag(:button, content, options)
    end
    
    def form_partial(name, form)
      render :partial => name, :locals => { :form => form }
    end
    
    def li_for(record, *args, &block)
      content_tag_for('li', record, *args, &block)
    end
    
    def tr_for(record, *args, &block)
      content_tag_for('tr', record, *args, &block)
    end
    
    def fieldset_for(record, *args, &block)
      content_tag_for('fieldset', record, *args, &block)
    end
    
    def if_any_of(collection)
      yield collection unless collection.nil? || collection.empty?
    end
    
    def use_script(script)
      @javascripts ||= []
      @javascripts << script
    end

    def included_scripts_with_libs(*args)
      args.concat(@javascripts || []).collect do |script|
        if script =~ /^http/
          # if it's a full path name we don't need to append a .js extension
          content_tag :script, '', :src => script, :type => 'text/javascript'
        else
          javascript_include_tag script
        end
      end.join("\n")
    end
    
    def include_page_scripts
      if (script = @content_for_script)
        content_tag(:script, script, :type => 'text/javascript')
      end
    end
    
  end
end


ActionView::Base.class_eval do
  include PowerTools::ActionView
  include PowerTools::ActionView::Forms
end