Module: Navigation

Included in:
Blogbot
Defined in:
lib/blogbot/navigation.rb

Overview

Adds capability to navigate through posts pages.

Instance Method Summary collapse

Instance Method Details

#ascend ⇒ Object

Changes current Nokogiri element to its parent.



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# File 'lib/blogbot/navigation.rb', line 32

def ascend
  if @current_element.ancestors.empty? == true # no more room to ascend
    puts 'At highest element.  Nothing left to ascend.'
  else
    @current_element = @current_element.parent
  end
end

#auto_ascend ⇒ Object 



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# File 'lib/blogbot/navigation.rb', line 40

def auto_ascend
  ascend until see_multiple_links? == true
  @current_element
end

#crawl_popular ⇒ Object

Examine popular element and climb DOM tree until multiple links are present.



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# File 'lib/blogbot/navigation.rb', line 58

def crawl_popular
  go_to_popular
  auto_ascend
end

#find_parent ⇒ Object

Returns parent of current Nokogiri element



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# File 'lib/blogbot/navigation.rb', line 27

def find_parent
  @parent = @current_element.parent # one element higher, the div container
end

#go_to_popular ⇒ Object

Sets current element to ‘Popular’ indicator.



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# File 'lib/blogbot/navigation.rb', line 16

def go_to_popular
  if see_popular? == false
    puts 'Nothing says "Popular" on this page'
  else
    store_indicator
    @current_element = @indicator
    @current_element
  end
end

#go_to_posts_page ⇒ Object

Navigates to posts page based off of store_posts_url.



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# File 'lib/blogbot/navigation.rb', line 4

def go_to_posts_page
  find_posts_url
  store_posts_url
  @current_page = @posts_url.click
end

#locate_popular_links ⇒ Object 



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# File 'lib/blogbot/navigation.rb', line 45

def locate_popular_links
  if possible_success? == false
    ignorance_error
  elsif see_popular? == true
    crawl_popular
  elsif see_posts? == true
    go_to_posts_page
    see_popular? == true ? crawl_popular : ignorance_error
  end
end

#previous_page ⇒ Object

Navigates to previous Mechanize page.



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# File 'lib/blogbot/navigation.rb', line 11

def previous_page
  @current_page = @agent.get(@agent.back['href'])
end