Class: BitPlayer::Navigator

Inherits:
Object
  • Object
show all
Defined in:
app/models/bit_player/navigator.rb

Overview

Business rules for proceeding statefully through an application.

Defined Under Namespace

Classes: RenderOptions

Instance Method Summary collapse

Constructor Details

#initialize(participant) ⇒ Navigator

Returns a new instance of Navigator.



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# File 'app/models/bit_player/navigator.rb', line 10

def initialize(participant)
  @participant = participant
  @status = participant.navigation_status
end

Instance Method Details

#content_position ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 27

def content_position
  @status.content_position
end

#context ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 15

def context
  @status.context
end

#current_content_provider ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 43

def current_content_provider
  current_module.provider(provider_position)
end

#current_module ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 84

def current_module
  @current_module ||= nil

  module_attrs = {
    bit_core_tool_id: BitCore::Tool.find_by_title(context).try(:id),
    position: module_position
  }

  if current_module_stale?
    @current_module = BitCore::ContentModule.where(module_attrs).first
  end

  @current_module ||= BitCore::ContentModule.new(module_attrs)
end

#fetch_next_content ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 47

def fetch_next_content
  if current_content_provider.exists?(content_position + 1)
    @status.increment_content_position
  elsif current_module.provider_exists?(provider_position + 1)
    @status.increment_provider_position
  else
    initialize_context(context)
  end
end

#fetch_previous_content ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 57

def fetch_previous_content
  if previous_content?
    @status.decrement_content_position
  end
end

#initialize_context(context) ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 67

def initialize_context(context)
  @status.initialize_context(context)
end

#initialize_location(options) ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 71

def initialize_location(options)
  content_module = BitCore::ContentModule.find(options[:module_id])
  @status.context = content_module.tool.title
  @status.module_position = content_module.position
  @status.provider_position = 1
  if options[:provider_id]
    @status.provider_position = content_module.content_providers
      .find(options[:provider_id]).position
  end
  @status.content_position = [options[:content_position].to_i, 1].max
  @status.save
end

#module_position ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 19

def module_position
  @status.module_position
end

#previous_content? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/bit_player/navigator.rb', line 63

def previous_content?
  current_content_provider.exists?(content_position - 1)
end

#provider_position ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 23

def provider_position
  @status.provider_position
end

#render_current_content(view_context) ⇒ Object 



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# File 'app/models/bit_player/navigator.rb', line 31

def render_current_content(view_context)
  options = RenderOptions.new(
    view_context, context, content_position, @participant
  )

  current_content_provider.render_current(options)
end

#show_nav_link? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/bit_player/navigator.rb', line 39

def show_nav_link?
  current_content_provider.show_nav_link?
end