# File lib/will_paginate/view_helpers.rb, line 210
210:     def initialize
211:       @gap_marker = '<span class="gap">&hellip;</span>'
212:     end

     # File lib/will_paginate/view_helpers.rb, line 242
242:     def html_attributes
243:       return @html_attributes if @html_attributes
244:       @html_attributes = @options.except *(WillPaginate::ViewHelpers.pagination_options.keys - [:class])
245:       # pagination of Post models will have the ID of "posts_pagination"
246:       if @options[:container] and @options[:id] === true
247:         @html_attributes[:id] = @collection.first.class.name.underscore.pluralize + '_pagination'
248:       end
249:       @html_attributes
250:     end

     # File lib/will_paginate/view_helpers.rb, line 218
218:     def prepare(collection, options, template)
219:       @collection = collection
220:       @options    = options
221:       @template   = template
222: 
223:       # reset values in case we're re-using this instance
224:       @total_pages = @param_name = @url_string = nil
225:     end

     # File lib/will_paginate/view_helpers.rb, line 230
230:     def to_html
231:       links = @options[:page_links] ? windowed_links : []
232:       # previous/next buttons
233:       links.unshift page_link_or_span(@collection.previous_page, 'disabled prev_page', @options[:previous_label])
234:       links.push    page_link_or_span(@collection.next_page,     'disabled next_page', @options[:next_label])
235:       
236:       html = links.join(@options[:separator])
237:       @options[:container] ? @template.content_tag(:div, html, html_attributes) : html
238:     end

     # File lib/will_paginate/view_helpers.rb, line 305
305:     def page_link(page, text, attributes = {})
306:       @template.link_to text, url_for(page), attributes
307:     end

     # File lib/will_paginate/view_helpers.rb, line 294
294:     def page_link_or_span(page, span_class, text = nil)
295:       text ||= page.to_s
296:       
297:       if page and page != current_page
298:         classnames = span_class && span_class.index(' ') && span_class.split(' ', 2).last
299:         page_link page, text, :rel => rel_value(page), :class => classnames
300:       else
301:         page_span page, text, :class => span_class
302:       end
303:     end

     # File lib/will_paginate/view_helpers.rb, line 309
309:     def page_span(page, text, attributes = {})
310:       @template.content_tag :span, text, attributes
311:     end

     # File lib/will_paginate/view_helpers.rb, line 315
315:     def url_for(page)
316:       page_one = page == 1
317:       unless @url_string and !page_one
318:         @url_params = {}
319:         # page links should preserve GET parameters
320:         stringified_merge @url_params, @template.params if @template.request.get?
321:         stringified_merge @url_params, @options[:params] if @options[:params]
322:         
323:         if complex = param_name.index(/[^\w-]/)
324:           page_param = (defined?(CGIMethods) ? CGIMethods : ActionController::AbstractRequest).
325:             parse_query_parameters("#{param_name}=#{page}")
326:           
327:           stringified_merge @url_params, page_param
328:         else
329:           @url_params[param_name] = page_one ? 1 : 2
330:         end
331: 
332:         url = @template.url_for(@url_params)
333:         return url if page_one
334:         
335:         if complex
336:           @url_string = url.sub(%r!((?:\?|&)#{CGI.escape param_name}=)#{page}!, '\1@')
337:           return url
338:         else
339:           @url_string = url
340:           @url_params[param_name] = 3
341:           @template.url_for(@url_params).split(//).each_with_index do |char, i|
342:             if char == '3' and url[i, 1] == '2'
343:               @url_string[i] = '@'
344:               break
345:             end
346:           end
347:         end
348:       end
349:       # finally!
350:       @url_string.sub '@', page.to_s
351:     end

     # File lib/will_paginate/view_helpers.rb, line 269
269:     def visible_page_numbers
270:       inner_window, outer_window = @options[:inner_window].to_i, @options[:outer_window].to_i
271:       window_from = current_page - inner_window
272:       window_to = current_page + inner_window
273:       
274:       # adjust lower or upper limit if other is out of bounds
275:       if window_to > total_pages
276:         window_from -= window_to - total_pages
277:         window_to = total_pages
278:       end
279:       if window_from < 1
280:         window_to += 1 - window_from
281:         window_from = 1
282:         window_to = total_pages if window_to > total_pages
283:       end
284:       
285:       visible   = (1..total_pages).to_a
286:       left_gap  = (2 + outer_window)...window_from
287:       right_gap = (window_to + 1)...(total_pages - outer_window)
288:       visible  -= left_gap.to_a  if left_gap.last - left_gap.first > 1
289:       visible  -= right_gap.to_a if right_gap.last - right_gap.first > 1
290: 
291:       visible
292:     end

     # File lib/will_paginate/view_helpers.rb, line 255
255:     def windowed_links
256:       prev = nil
257: 
258:       visible_page_numbers.inject [] do |links, n|
259:         # detect gaps:
260:         links << gap_marker if prev and n > prev + 1
261:         links << page_link_or_span(n, 'current')
262:         prev = n
263:         links
264:       end
265:     end

     # File lib/will_paginate/view_helpers.rb, line 363
363:     def current_page
364:       @collection.current_page
365:     end

     # File lib/will_paginate/view_helpers.rb, line 371
371:     def param_name
372:       @param_name ||= @options[:param_name].to_s
373:     end

     # File lib/will_paginate/view_helpers.rb, line 355
355:     def rel_value(page)
356:       case page
357:       when @collection.previous_page; 'prev' + (page == 1 ? ' start' : '')
358:       when @collection.next_page; 'next'
359:       when 1; 'start'
360:       end
361:     end

     # File lib/will_paginate/view_helpers.rb, line 376
376:     def stringified_merge(target, other)
377:       other.each do |key, value|
378:         key = key.to_s # this line is what it's all about!
379:         existing = target[key]
380: 
381:         if value.is_a?(Hash) and (existing.is_a?(Hash) or existing.nil?)
382:           stringified_merge(existing || (target[key] = {}), value)
383:         else
384:           target[key] = value
385:         end
386:       end
387:     end

     # File lib/will_paginate/view_helpers.rb, line 367
367:     def total_pages
368:       @total_pages ||= WillPaginate::ViewHelpers.total_pages_for_collection(@collection)
369:     end