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Edit File: auto-submit.js

(function($){
/**
 * To make a form auto submit, all you have to do is 3 things:
 *
 * ctools_add_js('auto-submit');
 *
 * On gadgets you want to auto-submit when changed, add the ctools-auto-submit
 * class. With FAPI, add:
 * @code
 *  '#attributes' => array('class' => array('ctools-auto-submit')),
 * @endcode
 *
 * If you want to have auto-submit for every form element,
 * add the ctools-auto-submit-full-form to the form. With FAPI, add:
 * @code
 *   '#attributes' => array('class' => array('ctools-auto-submit-full-form')),
 * @endcode
 *
 * If you want to exclude a field from the ctool-auto-submit-full-form auto submission,
 * add the class ctools-auto-submit-exclude to the form element. With FAPI, add:
 * @code
 *   '#attributes' => array('class' => array('ctools-auto-submit-exclude')),
 * @endcode
 *
 * Finally, you have to identify which button you want clicked for autosubmit.
 * The behavior of this button will be honored if it's ajaxy or not:
 * @code
 *  '#attributes' => array('class' => array('ctools-use-ajax', 'ctools-auto-submit-click')),
 * @endcode
 *
 * Currently only 'select', 'radio', 'checkbox' and 'textfield' types are supported. We probably
 * could use additional support for HTML5 input types.
 */

Drupal.behaviors.CToolsAutoSubmit = {
  attach: function(context) {
    // 'this' references the form element
    function triggerSubmit (e) {
      if ($.contains(document.body, this)) {
        var $this = $(this);
        if (!$this.hasClass('ctools-ajaxing')) {
          $this.find('.ctools-auto-submit-click').click();
        }
      }
    }

// the change event bubbles so we only need to bind it to the outer form
    $('form.ctools-auto-submit-full-form', context)
      .add('.ctools-auto-submit', context)
      .filter('form, select, input:not(:text, :submit)')
      .once('ctools-auto-submit')
      .change(function (e) {
        // don't trigger on text change for full-form
        if ($(e.target).is(':not(:text, :submit, .ctools-auto-submit-exclude)')) {
          triggerSubmit.call(e.target.form);
        }
      });

// e.keyCode: key
    var discardKeyCode = [
      16, // shift
      17, // ctrl
      18, // alt
      20, // caps lock
      33, // page up
      34, // page down
      35, // end
      36, // home
      37, // left arrow
      38, // up arrow
      39, // right arrow
      40, // down arrow
       9, // tab
      13, // enter
      27  // esc
    ];
    // Don't wait for change event on textfields
    $('.ctools-auto-submit-full-form input:text, input:text.ctools-auto-submit', context)
      .filter(':not(.ctools-auto-submit-exclude)')
      .once('ctools-auto-submit', function () {
        // each textinput element has his own timeout
        var timeoutID = 0;
        $(this)
          .bind('keydown keyup', function (e) {
            if ($.inArray(e.keyCode, discardKeyCode) === -1) {
              timeoutID && clearTimeout(timeoutID);
            }
          })
          .keyup(function(e) {
            if ($.inArray(e.keyCode, discardKeyCode) === -1) {
              timeoutID = setTimeout($.proxy(triggerSubmit, this.form), 500);
            }
          })
          .bind('change', function (e) {
            if ($.inArray(e.keyCode, discardKeyCode) === -1) {
              timeoutID = setTimeout($.proxy(triggerSubmit, this.form), 500);
            }
          });
      });
  }
};
})(jQuery);