crm/public/static/ueditor/_src/plugins/iframe.js

///import core
///import plugins\inserthtml.js
///commands 插入框架
///commandsName  InsertFrame
///commandsTitle  插入Iframe
///commandsDialog  dialogs\insertframe

UE.plugins["insertframe"] = function() {
  var me = this;
  function deleteIframe() {
    me._iframe && delete me._iframe;
  }

  me.addListener("selectionchange", function() {
    deleteIframe();
  });
};