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Current File : /home/riacommer/public_html/admin/vendor/wysihtml5/src/dom/observe.js

/**
 * Method to set dom events
 *
 * @example
 *    wysihtml5.dom.observe(iframe.contentWindow.document.body, ["focus", "blur"], function() { ... });
 */
wysihtml5.dom.observe = function(element, eventNames, handler) {
  eventNames = typeof(eventNames) === "string" ? [eventNames] : eventNames;
  
  var handlerWrapper,
      eventName,
      i       = 0,
      length  = eventNames.length;
  
  for (; i<length; i++) {
    eventName = eventNames[i];
    if (element.addEventListener) {
      element.addEventListener(eventName, handler, false);
    } else {
      handlerWrapper = function(event) {
        if (!("target" in event)) {
          event.target = event.srcElement;
        }
        event.preventDefault = event.preventDefault || function() {
          this.returnValue = false;
        };
        event.stopPropagation = event.stopPropagation || function() {
          this.cancelBubble = true;
        };
        handler.call(element, event);
      };
      element.attachEvent("on" + eventName, handlerWrapper);
    }
  }
  
  return {
    stop: function() {
      var eventName,
          i       = 0,
          length  = eventNames.length;
      for (; i<length; i++) {
        eventName = eventNames[i];
        if (element.removeEventListener) {
          element.removeEventListener(eventName, handler, false);
        } else {
          element.detachEvent("on" + eventName, handlerWrapper);
        }
      }
    }
  };
};

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