Class: Sinatra::Captcha::Image

Inherits:
Object
  • Object
show all
Defined in:
lib/sinatra/captcha.rb

Overview

TODO simpliify

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Image

Returns a new instance of Image.



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# File 'lib/sinatra/captcha.rb', line 60

def initialize app
  @generator = FastCaptcha.new(nil, app.captcha_level, app.captcha_width, app.captcha_height)
  @ttl = app.captcha_ttl
  @width, @height = app.captcha_width, app.captcha_height
end

Instance Method Details

#ajax_html(id = 'captcha_ajax') ⇒ Object 



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# File 'lib/sinatra/captcha.rb', line 79

def ajax_html id = 'captcha_ajax'
  div_id  = id + '_div'
  snippet = <<-HTML
    <script type="text/javascript">
      $(document).ready(function() {
        $('##{id}_v').click(function() {
          load_captcha_#{id}();
          $(this).closest('form').find('input[type="submit"]').removeAttr('disabled');
          $('##{id}_r').click(function() {
            load_captcha_#{id}();
            $(this).closest('form').find('input[type="submit"]').removeAttr('disabled');
            return false;
          });
          $(this).remove();
          return false;
        });
      });
      function load_captcha_#{id}() {
          $('##{id}_r').hide();
          $('##{id}').slideDown(250);
          $('##{id}').load('/captcha/snippet/#{div_id}', function() {
            $('##{id}').find('input[name="captcha[response]"]').focus();
          });
          $('##{id}').delay(#{@ttl*500}).slideUp(250, function() {
            $(this).closest('form').find('input[type="submit"]').attr('disabled', 'disabled');
            $('##{id}_r').show();
          });
          return false;
      }
    </script>
    <div class="captcha" style="display:none" id="#{id}"></div>
    <div id="#{id}_c">
      <button id="#{id}_v" class="submit">Show Captcha</button>
      <button id="#{id}_r" class="submit" style="display:none">Refresh Captcha</button>
    </div>
  HTML
end

#html(id = 'captcha', key = nil) ⇒ Object 



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# File 'lib/sinatra/captcha.rb', line 66

def html id = 'captcha', key = nil
  challenge = @generator.generate @ttl, false
  snippet = <<-HTML
    <div id="#{id}">
      <div style="width:#{@width}px;height:#{@height}px;padding:0">
        <img style="margin: 0 auto" src="/captcha/#{challenge.key}" alt="loading ...">
      </div>
      <input type="hidden" name="captcha[challenge]" value="#{challenge.key}">
      <input autocomplete="off" id="cr#{id}" name="captcha[response]" value="">
    </div>
  HTML
end

#image(key) ⇒ Object 



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# File 'lib/sinatra/captcha.rb', line 117

def image key
  @generator.refresh key
end

#validate(response, key) ⇒ Object 



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# File 'lib/sinatra/captcha.rb', line 121

def validate response, key
  @generator.validate key, response
end