def wait_for(params={})
timeout = params[:timeout] || 5
message = params[:message] || "Timeout exceeded"
begin_time = Time.now
while (Time.now - begin_time) < timeout
value = nil
begin
value = yield
rescue Exception => e
unless is_ignorable_wait_for_exception?(e)
raise e
end
end
return value if value
sleep 0.25
end
error_message = "#{message} (after #{timeout} sec)"
if $browser && Webrat.configuration.selenium_verbose_output
error_message += "\n\nHTML of the page was:\n\n\#{selenium.get_html_source}\"\n"
end
raise Webrat::TimeoutError.new(error_message)
true
end