code: function stopURIListPropagation(files, event) {
          var types = event.dataTransfer.types;
              
          if ((!files || !files.length) && types) { // We only want to check if a string of text was dragged into the editor
              types.forEach(function (value) {
                  //Dragging text externally (dragging text from another file): types has "text/plain" and "text/html"
                  //Dragging text internally (dragging text to another line): types has just "text/plain"
                  //Dragging a file: types has "Files"
                  //Dragging a url: types has "text/plain" and "text/uri-list" <-what we are interested in
                  if (value === "text/uri-list") { 
                      event.stopPropagation();
                      event.preventDefault();
                      return;
                  }
              });
          }
      }
docs: Determines if the event contains a type list that has a URI-list.
  If it does and contains an empty file list, then what is being dropped is a URL.
  If that is true then we stop the event propagation and default behavior to save Brackets editor from the browser taking over.
  @param {Array.<File>} files Array of File objects from the event datastructure. URLs are the only drop item that would contain a URI-list.
  @param {event} event The event datastucture containing datatransfer information about the drag/drop event. Contains a type list which may or may not hold a URI-list depending on what was dragged/dropped. Interested if it does.