refs #41 helper options are configurable now!

configurable values are: window, outer_window, left, right

lib/kaminari/config.rb

@@ -18,10 +18,18 @@ module Kaminari
   class Configuration #:nodoc:
     include ActiveSupport::Configurable
     config_accessor :default_per_page
+    config_accessor :window
+    config_accessor :outer_window
+    config_accessor :left
+    config_accessor :right
   end
 
   # this is ugly. why can't we pass the default value to config_accessor...?
   configure do |config|
     config.default_per_page = 25
+    config.window = 4
+    config.outer_window = 0
+    config.left = 0
+    config.right = 0
   end
 end

lib/kaminari/helpers/paginator.rb

@@ -6,10 +6,12 @@ module Kaminari
     class Paginator < Tag
       def initialize(template, options) #:nodoc:
         @window_options = {}.tap do |h|
-          h[:window] = options.delete(:window) || options.delete(:inner_window) || 4
+          h[:window] = options.delete(:window) || options.delete(:inner_window) || Kaminari.config.window
-          outer_window = options.delete(:outer_window)
+          outer_window = options.delete(:outer_window) || Kaminari.config.outer_window
-          h[:left] = options.delete(:left) || outer_window || 0
+          h[:left] = options.delete(:left) || Kaminari.config.left
-          h[:right] = options.delete(:right) || outer_window || 0
+          h[:left] = outer_window if h[:left] == 0
+          h[:right] = options.delete(:right) || Kaminari.config.right
+          h[:right] = outer_window if h[:right] == 0
         end
         @template, @options = template, options
         @options[:current_page] = PageProxy.new @window_options.merge(@options), @options[:current_page], nil

spec/config/config_spec.rb

@@ -16,4 +16,28 @@ describe Kaminari::Configuration do
       end
     end
   end
+
+  describe 'window' do
+    context 'by default' do
+      its(:window) { should == 4 }
+    end
+  end
+
+  describe 'outer_window' do
+    context 'by default' do
+      its(:outer_window) { should == 0 }
+    end
+  end
+
+  describe 'left' do
+    context 'by default' do
+      its(:left) { should == 0 }
+    end
+  end
+
+  describe 'right' do
+    context 'by default' do
+      its(:right) { should == 0 }
+    end
+  end
 end