Class: Carnival::Paginator

Inherits:
Object
  • Object
show all
Defined in:
app/view_objects/carnival/paginator.rb

Instance Method Summary collapse

Constructor Details

#initialize(current_page, last_page, max_fast_pages = 5) ⇒ Paginator

Returns a new instance of Paginator.



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# File 'app/view_objects/carnival/paginator.rb', line 3

def initialize(current_page, last_page, max_fast_pages = 5)
  @current_page = current_page
  @last_page = last_page >= 1 ? last_page : 1
  @max_fast_pages = max_fast_pages
end

Instance Method Details



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# File 'app/view_objects/carnival/paginator.rb', line 21

def fast_pages_links_html
  fast_pages_links_indexes.map do |page|
    { label: page, css_class: get_css_class(page), js_function: get_js_function(page) }
  end
end

#fast_pages_links_indexes ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 9

def fast_pages_links_indexes
  fast_page_links = []
  first_index = -(@max_fast_pages / 2)
  while fast_page_links.size < @max_fast_pages
    fast_page = @current_page + first_index
    break if fast_page > @last_page
    fast_page_links << fast_page if fast_page > 0
    first_index += 1
  end
  fast_page_links
end

#get_css_class(page) ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 31

def get_css_class(page)
  if page == @current_page
    'carnival-selected-page-button'
  else
    'carnival-page-button'
  end
end

#get_js_function(page) ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 27

def get_js_function(page)
  "javascript:Carnival.goToPage(#{page})"
end

#next_page ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 47

def next_page
  if @current_page + 1 > @last_page
    @current_page
  else
    @current_page + 1
  end
end

#pages ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 55

def pages
  htmls = []
  htmls << { label: ('paginate_first'), js_function: get_js_function(1) }
  htmls << { :label => ('paginate_previous'), js_function: get_js_function(previous_page) }
  htmls = htmls + fast_pages_links_html
  htmls << { label: ('paginate_next'), js_function: get_js_function(next_page) }
  htmls << { label: ('paginate_last'), js_function: get_js_function(@last_page) }
end

#previous_page ⇒ Object 



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# File 'app/view_objects/carnival/paginator.rb', line 39

def previous_page
  if @current_page - 1 < 1
    @current_page
  else
    @current_page - 1
  end
end