Added options to selenium session methods to better handle ajax operations. For example: clicks_link('Foo', :wait => :ajax). I'd love to figure out

how to infer whether a click results in ajax vs. dom manipulation vs. page load, but we'll start with this.

lib/webrat/selenium/selenium_session.rb

@@ -18,16 +18,44 @@ module Webrat
       @selenium.get_html_source
     end
     
-    def clicks_button(button_text = nil)
+    def clicks_button(button_text = nil, options = {})
+      button_text, options = nil, button_text if button_text.is_a?(Hash) && options == {}
       button_text ||= '*'
       @selenium.click("button=#{button_text}")
-      @selenium.wait_for_page_to_load()
+      wait_for_result(options[:wait])
     end
 
-    def clicks_link(link_text)
-      @selenium.click("webratlink=#{Regexp.escape(link_text)}")
-      @selenium.wait_for_page_to_load()
+    def clicks_link(link_text, options = {})
+      @selenium.click("webratlink=#{link_text}")
+      wait_for_result(options[:wait])
     end
+
+    def wait_for_result(wait_type)
+      if wait_type == :ajax
+        wait_for_ajax
+      elsif wait_type == :effects
+        wait_for_effects
+      else
+        wait_for_page_to_load
+      end
+    end
+
+    def wait_for_page_to_load(timeout = 15000)
+      @selenium.wait_for_page_to_load(timeout)
+    end
+
+    def wait_for_ajax(timeout = 15000)
+      @selenium.wait_for_condition "window.Ajax.activeRequestCount == 0", timeout
+    end
+
+    def wait_for_effects(timeout = 15000)
+      @selenium.wait_for_condition "window.Effect.Queue.size() == 0", timeout
+    end
+
+    def wait_for_ajax_and_effects
+      wait_for_ajax
+      wait_for_effects
+    end    
     
     def selects(option_text, options = {})
       id_or_name_or_label = options[:from]