Module: RailsConnector::MarkerHelper

Included in:
DefaultCmsHelper
Defined in:
app/helpers/rails_connector/marker_helper.rb

Overview

This module contains helpers that can be used to build markers for the preview.

The helpers will not render anything if not in editor mode! See Configuration for information on modes.

All helpers have the following options, unknown options are passed to the HTML element which is being created:

:context

the context object that will be shown in the preview after editing

:size

the symbolic size of the target window to open

:target

the target frame in which the edit window is to be opened.

You can specify the size of the edit window by means of the :size option:

'n'

normal browser window

'udl'

undecorated large browser window

'uds'

undecorated small browser window

'udt'

undecorated tiny browser window

The :target option becomes the target attribute of the <a> tag.

Instance Method Summary collapse

Instance Method Details

#action_item(title, css_class, objs, action, options = {}) ⇒ Object

Creates an action marker item for the list generated by #iconlist.

title

the title which will be displayed.

css_class

the css-class can be used to display a different icon.

objs

the array of objects for which the action dialog will be generated.

action

the action for which the action dialog will be generated.

options

options that will be delegated to the #action_marker helper.



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# File 'app/helpers/rails_connector/marker_helper.rb', line 265

def action_item(title, css_class, objs, action, options = {})
  action_link = action_marker(action, objs, options) { content_tag(:span, title, :class => css_class) }
  content_tag(:li, action_link)
end

#action_marker(action, objs, options = {}, &block) ⇒ Object

Renders a marker for an action to be performed with any number of objects. action the attribute as a Symbol or String. objs is an Array containing a single, none or more than one Obj. The helper has additional options:

:permissions

is an Array of permissions the current user needs to use

the marker: :read, :write, :root, :create_children - defaults to [:read]. This option is available for a single Obj passed to objs.

:params

a hash of parameters to be passed to the action.

The following code will render an action marker for the release action of the current object:

<%= action_marker :workflow_release, [@obj] %>



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# File 'app/helpers/rails_connector/marker_helper.rb', line 105

def action_marker(action, objs, options = {}, &block)
  return unless Configuration.editor_interface_enabled?

  context = (options.delete :context) || @obj
  size = options.delete(:size)
  target = options.delete(:target) || "_blank"
  params = options.delete(:params)
  permissions = options.delete(:permissions) || [:read]

  if objs.size == 1
    memberships = required_memberships_for_permissions(objs.first, permissions)
  else
    memberships = []
  end

  marker_id = store_marker_definition(
    :memberships => memberships
  )

  link_to(
    block_given? ? block.call : action.to_s.humanize,
    uri_for_action_marker(action, objs, context, size, target, params),
    options.merge(:class => ["nps_action_marker", "nps_marker_id_#{marker_id}", options[:class]].compact.join(' '))
  )
end

#edit_item(title, css_class, obj, attribute, options = {}) ⇒ Object

Creates an edit marker item for the list generated by #iconlist.

title

the title which will be displayed.

css_class

the css-class can be used to display a different icon.

obj

the object for which the edit dialog will be generated.

attribute

the attribute for which the edit dialog will be generated.

options

options that will be delegated to the #link_to_edit helper.



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# File 'app/helpers/rails_connector/marker_helper.rb', line 252

def edit_item(title, css_class, obj, attribute, options = {})
  edit_link = link_to_edit(content_tag(:span, title, :class => css_class), obj, attribute, options)
  content_tag(:li, edit_link)
end

#edit_marker(obj, attr, options = {}, &block) ⇒ Object

Renders an edit marker for a named attribute of an active object in the preview. obj is the Obj to edit, attr the attribute as a Symbol or String. The helper will render nothing if the object is inactive! The :context defaults to obj.

The following code will render an edit marker for the title attribute of the current object:

<%= edit_marker @obj, :title %>

By passing a block, the evaluated block will be included in the marker:

<%= edit_marker @obj, :title do |obj, attr|
  display_value obj[attr]
end %>

The last form is the default of DisplayHelper#display_field without the option :marker => false. When the blob evaluates to nil, an empty string or array, the markup of the option :default_value will be rendered.

Hint: You should not render edit markers within elements that are hidden via CSS (display:none), otherwise they cannot be displayed correctly.



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# File 'app/helpers/rails_connector/marker_helper.rb', line 45

def edit_marker(obj, attr, options = {}, &block)
  if Configuration.editor_interface_enabled? && !session[:hide_editmarkers]
    context = (options.delete :context) || @obj
    default_value = options.delete(:default_value)

    if block_given?
      content = block.call(obj, attr)
      content = default_value || raw("&nbsp;") if content.blank?
    else
      content = attr.to_s.humanize
      content = obj.name + ": " + content if obj != context
    end

    marker_id = store_marker_definition(
      :obj_id => obj.id,
      :attribute => format_attribute_name_for_gui(attr),
      :context_id => context ? context.id : nil,
      :size => options.delete(:size),
      :target => options.delete(:target),
      :memberships => required_memberships_for_editing(obj, attr)
    )

    store_edit_marker_markup(content_tag(:a, "",
        :class => "nps_edit_marker nps_marker_id_#{marker_id}"))

    tag_type = options.delete(:tag) || :span
    content_tag(
      tag_type,
      content.to_s,
      options.merge(:class => "#{options[:class]}", :id => "nps_marker_id_#{marker_id}")
    )
  else
    block_given? ? block.call(obj, attr) : nil
  end
end

#iconlist(&block) ⇒ Object

This helper method can be used in #marker_menu to generate a list with actions using #edit_item or #action_item. For each action a icon and title will be shown.

Usage:

<%= marker_menu do %>
  <%= iconlist do %>
    <%= edit_item("edit title", "css_class", @obj, :image) %>
    <%= action_item("edit image", "css_class", [@obj], :editImage) %>
  <% end %>
<% end %>



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# File 'app/helpers/rails_connector/marker_helper.rb', line 240

def iconlist(&block)
  content_tag(:ul, capture(&block)) if block_given?
end

#link_to_edit(name, obj, attr, options = {}) ⇒ Object

Generates an edit marker link.

name

the link caption.

obj

the object for which the edit dialog will be generated.

attr

the attribute for which the edit dialog will be generated.

options

options for the edit dialog (see #edit_marker).



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# File 'app/helpers/rails_connector/marker_helper.rb', line 138

def link_to_edit(name, obj, attr, options = {})
  if Configuration.editor_interface_enabled?
    context = (options.delete :context) || @obj
    size = options.delete(:size)
    target = options.delete(:target) || "_blank"

    link_to name.to_s, '#', onclick: "inline_editing.openEditDialog('#{obj.id}', '#{attr}', '#{context.id || 'null'}', '#{size || 'null'}', '#{target || 'null'}'); return false;"
  end
end

#marker_menu(left = 0, top = 0, &block) ⇒ Object

Renders a folding menu which can be used to insert various edit actions or informations.

left

the left offset.

top

the top offset.

&block

the content which will be displayed in the menu.

To generate a menu you have to create one using the #marker_menu helper. Than you have to mark the target for which the menu should be displayed using the #marker_menu_target helper.

Usage:

<%= marker_menu do %>
  Menu
<% end %>

<%= marker_menu_target(:div) do %>
  Content
<% end %>



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# File 'app/helpers/rails_connector/marker_helper.rb', line 168

def marker_menu(left=0, top=0, &block)
  self.current_marker_menu_id = store_marker_definition(
    :offset_left => left,
    :offset_top => top
  )
  store_marker_markup(content_tag(
    :div,
    marker_menu_markup(capture(&block)),
    :class => "nps_marker_menu nps_marker_id_#{current_marker_menu_id}",
    :id => "nps_marker_menu_#{current_marker_menu_id}"
  ))
  nil
end

#marker_menu_target(tag_name, options = {}, &block) ⇒ Object

Marks the given content to display the previous defined marker menu.

tag_name

the tag in which the content will be displayed.

options

the options for the tag.

&block

the content which will be displayed with the menu.

See #marker_menu for an example.



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# File 'app/helpers/rails_connector/marker_helper.rb', line 190

def marker_menu_target(tag_name, options = {}, &block)
  content_tag(
    tag_name,
    capture(&block),
    options.merge(:class => "#{marker_menu_target_class} #{options[:class]}")
  )
end

#marker_menu_target_class ⇒ Object

Returns the css class used for the target element where the marker menu should be displayed.

Will be used automatically if you use the helpers #marker_menu and #marker_menu_target. But if you want to set a marker menu manually to an element (e.g. an image) you need to supply this css class.



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# File 'app/helpers/rails_connector/marker_helper.rb', line 205

def marker_menu_target_class
  "nps_marker_menu_target nps_marker_menu_target_#{current_marker_menu_id}" if Configuration.editor_interface_enabled?
end

#toggle_edit_marker_link(value) ⇒ Object

Renders a link which the editor can use to toggle on/off the editmarkers shown in the preview. This link will only be shown if the Rails Connector is in editor mode. value the link text or e.g. an image_tag



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# File 'app/helpers/rails_connector/marker_helper.rb', line 86

def toggle_edit_marker_link(value)
  if Configuration.editor_interface_enabled?
    link_to value, toggle_markers_url(@obj)
  end
end