application_helper.rb

# Methods added to this helper will be available to all templates in the application
module ApplicationHelper
  include HomeHelper

  protected
  def contract model
    model.to_s
  end

  def show_habtm associations
    render :partial => 'common/show_habtm', :collection => associations, :as => :association
  end

  def edit_habtm klass, association, prefix=nil
    render :partial => 'common/edit_habtm', :locals =>{:prefix => prefix, :klass => klass, :associations => association.all.sort.delete_if{|e| e == klass}}
  end

  def link_to_remove_fields(name, f)
    f.hidden_field(:_destroy) + link_to_function(icon_text("remove",""), "remove_fields(this)", :title => "Remove Parameter")
  end

  def trunc text, length
    text = text.to_s
    options = text.size > length ? {:'data-original-title'=>text, :rel=>'twipsy'} : {}
    content_tag(:span, truncate(text, :length => length), options).html_safe
  end

  # Creates a link to a javascript function that creates field entries for the association on the web page
  # +name+       : String containing links's text
  # +f+          : FormBuiler object
  # +association : The field are created to allow entry into this association
  # +partial+    : String containing an optional partial into which we render
  def link_to_add_fields(name, f, association, partial = nil, options = {})
    new_object = f.object.class.reflect_on_association(association).klass.new
    fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder|
      render((partial.nil? ? association.to_s.singularize + "_fields" : partial), :f => builder)
    end
    link_to_function(name, ("add_fields(this, \"#{association}\", \"#{escape_javascript(fields)}\")").html_safe, options.merge({:class => "btn btn-small btn-success"}) )
  end

  def toggle_div divs
    update_page do |page|
      (divs.is_a?(Array) ? divs : divs.to_s).each do |div|
        # add jquery '#div' to the div if its missing
        div = div.to_s
        div = "##{div}" if div[0] != "#"
        page << "if ($('#{div}').is(':visible')) {"
        page[div].hide()
        page << "} else {"
        page[div].show
        page << "}"
      end
    end
  end

  def link_to_remove_puppetclass klass
    options = klass.name.size > 28 ? {:'data-original-title'=>klass.name, :rel=>'twipsy'} : {}
    content_tag(:span, truncate(klass.name, :length => 28), options).html_safe +
    link_to_function("","remove_puppet_class(this)", :'data-class-id'=>klass.id,
                     :'data-original-title'=>"Click to remove #{klass}", :rel=>'twipsy',
                     :class=>"ui-icon ui-icon-minus")
  end

  def link_to_add_puppetclass klass, type
    options = klass.name.size > 28 ? {:'data-original-title'=>klass.name, :rel=>'twipsy'} : {}
    content_tag(:span, truncate(klass.name, :length => 28), options).html_safe +
    link_to_function("", "add_puppet_class(this)",
                       'data-class-id' => klass.id, 'data-type' => type,
                       'data-original-title' => "Click to add #{klass}", :rel => 'twipsy',
                       :class => "ui-icon ui-icon-plus")
  end

  def check_all_links(form_name=':checkbox')
    link_to_function("Check all", "checkAll('#{form_name}', true)") +
    link_to_function("Uncheck all", "checkAll('#{form_name}', false)")
  end

  # Return true if user is authorized for controller/action, otherwise false
  # +controller+ : String or symbol for the controller
  # +action+     : String or symbol for the action
  def authorized_for(controller, action)
    User.current.allowed_to?({:controller => controller.to_s.gsub(/::/, "_").underscore, :action => action}) rescue false
  end

  # Display a link if user is authorized, otherwise a string
  # +name+    : String to be displayed
  # +options+ : Hash containing
  #             :controller  : String or Symbol representing the controller
  #             :auth_action : String or Symbol representing the action to be used for authorization checks
  # +html_options+ : Hash containing html options for the link or span
  def link_to_if_authorized(name, options = {}, html_options = {})
    auth_action = options.delete :auth_action
    enable_link = authorized_for(options[:controller] || params[:controller], auth_action || options[:action])
    if enable_link
      link_to name, options, html_options
    else
      link_to_function name, nil, html_options.merge!(:class => "#{html_options[:class]} disabled", :disabled => true)
    end
  end

  def display_delete_if_authorized(options ={}, html_options ={})
    options = {:auth_action => :destroy}.merge(options)
    html_options = {:confirm => 'Are you sure?', :method => :delete, :class => 'delete'}.merge(html_options)
    display_link_if_authorized("Delete", options, html_options)
  end
  # Display a link if user is authorized, otherwise nothing
  # +name+    : String to be displayed
  # +options+ : Hash containing
  #             :controller  : String or Symbol representing the controller
  #             :auth_action : String or Symbol representing the action to be used for authorization checks
  # +html_options+ : Hash containing html options for the link or span
  def display_link_if_authorized(name, options = {}, html_options = {})
    auth_action = options.delete :auth_action
    enable_link = html_options.has_key?(:disabled) ? !html_options[:disabled] : true
    if enable_link and authorized_for(options[:controller] || params[:controller], auth_action || options[:action])
      link_to(name, options, html_options)
    else
      ""
    end
  end

  def authorized_edit_habtm klass, association, prefix=nil
    return edit_habtm(klass, association, prefix) if authorized_for params[:controller], params[:action]
    show_habtm klass.send(association.name.pluralize.downcase)
  end

  # renders a style=display based on an attribute properties
  def display? attribute = true
    "style=#{display(attribute)}"
  end

  def display attribute
    "display:#{attribute ? 'none' : 'inline'};"
  end

  # return our current model instance type based on the current controller
  # i.e. HostsController would return "host"
  def type
    controller_name.singularize
  end

  def checked_icon condition
    image_tag("toggle_check.png") if condition
  end

  def searchable?
    return false if (SETTINGS[:login] and !User.current )
    return false unless @searchbar
    if (controller.action_name == "index") or (defined?(SEARCHABLE_ACTIONS) and (SEARCHABLE_ACTIONS.include?(controller.action_name)))
      controller.respond_to?(:auto_complete_search)
    end
  end

  def auto_complete_search(method, val,tag_options = {}, completion_options = {})
    path = eval("#{controller_name}_path")
    options = tag_options.merge(:class => "auto_complete_input")
    text_field_tag(method, val, options) + auto_complete_clear_value_button(method) +
      auto_complete_field_jquery(method, "#{path}/auto_complete_#{method}", completion_options)
  end

  def help_path
    link_to "Help", :action => "welcome"
  end

  def method_path method
    eval("#{method}_#{controller_name}_path")
  end

  def edit_textfield(object, property, options={})
    edit_inline(object, property, options.merge({:type => "edit_textfield"}))
  end

  def edit_textarea(object, property, options={})
    edit_inline(object, property, options.merge({:type => "edit_textarea"}))
  end

  def edit_select(object, property, options={})
    edit_inline(object, property, options.merge({:type => "edit_select"}))
  end

  def pie_chart name, title, data, options = {}
    link_to_function(content_tag(:h4,title,:class=>'ca'), "expand_chart(this)") +
    content_tag(:div, nil,
                { :id             => name,
                  :class          => 'statistics_pie',
                  :'chart-name'   => name,
                  :'chart-title'  => title,
                  :'chart-data'   => data.to_a.to_json,
                  :'chart-href'   => options[:search] ? "/hosts?search=#{URI.encode(options.delete(:search))}" : "#"
                }.merge(options))
  end

  def bar_chart name, title, subtitle, labels, data, options = {}
    content_tag(:div, nil,
                { :id             => name,
                  :class          => 'statistics_bar',
                  :'chart-name'   => name,
                  :'chart-title'  => title,
                  :'chart-subtitle' => subtitle,
                  :'chart-labels' => labels.to_a.to_json,
                  :'chart-data'   => data.to_a.to_json
                }.merge(options))
  end

  def action_buttons(*args)
    content_tag(:div, :class => "btn-toolbar btn-toolbar-condensed") do
      toolbar_action_buttons args
    end
  end

  def toolbar_action_buttons(*args)
    # the no-buttons code is needed for users with less permissions
    return unless args
    args = args.flatten.map{|arg| arg unless arg.blank?}.compact
    return if args.length == 0

    #single button
    return content_tag(:span, args[0].html_safe, :class=>'btn') if args.length == 1

    #multiple buttons
    primary = args.delete_at(0)

    content_tag(:div,:class => "btn-group") do
      primary + link_to(content_tag(:span, '', :class=>'caret'),'#', :class=>'btn dropdown-toggle', :'data-toggle'=>'dropdown') +
      content_tag(:ul,:class=>"dropdown-menu") do
        args.map{|option| content_tag(:li,option)}.join(" ").html_safe
      end
    end
  end

  private
  def edit_inline(object, property, options={})
    name       = "#{type}[#{property}]"
    helper     = options[:helper]
    value      = helper.nil? ? object.send(property) : self.send(helper, object)
    klass      = options[:type]
    update_url = options[:update_url] || url_for(object)

    opts = { :title => "Click to edit", "data-url" => update_url, :class => "editable #{klass}",
      :name => name, "data-field" => property, :value => value, :select_values => options[:select_values]}

    content_tag_for :span, object, opts do
      h(value)
    end

  end

end