use PageProxy for current_page

app/views/kaminari/_first_page.html.erb

@@ -1,11 +1,11 @@
 <%# Link to the "First" page
   - available local variables
     url:           url to the first page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
 -%>
-<span class="first<%= ' disabled' if current_page == 1 %>">
-  <%= link_to_unless current_page == 1, raw(t 'views.pagination.first'), url, :remote => remote %>
+<span class="first<%= ' disabled' if current_page.first? %>">
+  <%= link_to_unless current_page.first?, raw(t 'views.pagination.first'), url, :remote => remote %>
 </span>

app/views/kaminari/_first_page.html.haml

@@ -1,9 +1,9 @@
 -#  Link to the "First" page
   - available local variables
     url:           url to the first page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
-%span{:class => "first#{' disabled' if current_page == 1}"}
-  = link_to_unless current_page == 1, raw(t 'views.pagination.first'), url, :remote => remote
+%span{:class => "first#{' disabled' if current_page.first?}"}
+  = link_to_unless current_page.first?, raw(t 'views.pagination.first'), url, :remote => remote

app/views/kaminari/_gap.html.erb

@@ -1,6 +1,6 @@
 <%# Non-link tag that stands for skipped pages...
   - available local variables
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_gap.html.haml

@@ -1,6 +1,6 @@
 -#  Non-link tag that stands for skipped pages...
   - available local variables
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_last_page.html.erb

@@ -1,11 +1,11 @@
 <%# Link to the "Last" page
   - available local variables
     url:           url to the last page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
 -%>
-<span class="last<%= ' disabled' if current_page == num_pages %>">
-  <%= link_to_unless current_page == num_pages, raw(t 'views.pagination.last'), url, {:remote => remote} %>
+<span class="last<%= ' disabled' if current_page.last? %>">
+  <%= link_to_unless current_page.last?, raw(t 'views.pagination.last'), url, {:remote => remote} %>
 </span>

app/views/kaminari/_last_page.html.haml

@@ -1,9 +1,9 @@
 -#  Link to the "Last" page
   - available local variables
     url:           url to the last page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
-%span{:class => "last#{' disabled' if current_page == num_pages}"}
-  = link_to_unless current_page == num_pages, raw(t 'views.pagination.last'), url, {:remote => remote}
+%span{:class => "last#{' disabled' if current_page.last?}"}
+  = link_to_unless current_page.last?, raw(t 'views.pagination.last'), url, {:remote => remote}

app/views/kaminari/_next_page.html.erb

@@ -1,11 +1,11 @@
 <%# Link to the "Next" page
   - available local variables
     url:           url to the next page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
 -%>
-<span class="next<%= ' disabled' if current_page == num_pages %>">
-  <%= link_to_unless current_page == num_pages, raw(t 'views.pagination.next'), url, :rel => 'next', :remote => remote %>
+<span class="next<%= ' disabled' if current_page.last? %>">
+  <%= link_to_unless current_page.last?, raw(t 'views.pagination.next'), url, :rel => 'next', :remote => remote %>
 </span>

app/views/kaminari/_next_page.html.haml

@@ -1,9 +1,9 @@
 -#  Link to the "Next" page
   - available local variables
     url:           url to the next page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
-%span{:class => "next#{' disabled' if current_page == num_pages}"}
-  = link_to_unless current_page == num_pages, raw(t 'views.pagination.next'), url, :rel => 'next', :remote => remote
+%span{:class => "next#{' disabled' if current_page.last?}"}
+  = link_to_unless current_page.last?, raw(t 'views.pagination.next'), url, :rel => 'next', :remote => remote

app/views/kaminari/_page.html.erb

@@ -1,8 +1,8 @@
 <%# Link showing page number
   - available local variables
-    page:          the PageProxy for the current page
+    page:          a page object for "this" page
     url:           url to this page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_page.html.haml

@@ -1,8 +1,8 @@
 -#  Link showing page number
   - available local variables
-    page:          the PageProxy for the current page
+    page:          a page object for "this" page
     url:           url to this page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_paginator.html.erb

@@ -1,6 +1,6 @@
 <%# The container tag
   - available local variables
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_paginator.html.haml

@@ -1,6 +1,6 @@
 -#  The container tag
   - available local variables
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote

app/views/kaminari/_prev_page.html.erb

@@ -1,11 +1,11 @@
 <%# Link to the "Previous" page
   - available local variables
     url:           url to the previous page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
 -%>
-<span class="prev<%= ' disabled' if current_page == 1 %>">
-  <%= link_to_unless current_page == 1, raw(t 'views.pagination.previous'), url, :rel => 'prev', :remote => remote %>
+<span class="prev<%= ' disabled' if current_page.first? %>">
+  <%= link_to_unless current_page.first?, raw(t 'views.pagination.previous'), url, :rel => 'prev', :remote => remote %>
 </span>

app/views/kaminari/_prev_page.html.haml

@@ -1,9 +1,9 @@
 -#  Link to the "Previous" page
   - available local variables
     url:           url to the previous page
-    current_page:  the page number of currently displayed page
+    current_page:  a page object for the currently displayed page
     num_pages:     total number of pages
     per_page:      number of items to fetch per page
     remote:        data-remote
-%span{:class => "prev#{' disabled' if current_page == 1}"}
-  = link_to_unless current_page == 1, raw(t 'views.pagination.previous'), url, :rel => 'prev', :remote => remote
+%span{:class => "prev#{' disabled' if current_page.first?}"}
+  = link_to_unless current_page.first?, raw(t 'views.pagination.previous'), url, :rel => 'prev', :remote => remote

lib/kaminari/helpers/helpers.rb

@@ -12,6 +12,7 @@ module Kaminari
           h[:right] = options.delete(:right) || outer_window || 0
         end
         @template, @options = template, options
+        @options[:current_page] = PageProxy.new @window_options.merge(@options), @options[:current_page], nil
         # so that this instance can actually "render". Black magic?
         @output_buffer = ActionView::OutputBuffer.new
       end
@@ -117,7 +118,7 @@ module Kaminari
 
         # inside the inner window or not
         def inside_window?
-          (@page - @options[:current_page]).abs <= @options[:window]
+          (@options[:current_page] - @page).abs <= @options[:window]
         end
 
         # The last rendered tag was "truncated" or not
@@ -133,6 +134,14 @@ module Kaminari
           number.to_s
         end
 
+        def +(other)
+          to_i + other.to_i
+        end
+
+        def -(other)
+          to_i - other.to_i
+        end
+
         def <=>(other)
           to_i <=> other.to_i
         end