xheditor替换功能

有一个文本编辑功能用到了xheditor,产品要求加上查找与替换的功能。目前所做的就是简单的替换，主要是单步查找时如高亮显示，不知道如何解决。

var beforeEditorData = null;
	$(document).ready(function(){
		var plugins = {
			searchReplace:{c:'xheIcon xheBtnCut',t:'查找替换',s:'ctrl+9',h:1,e:function(){
                var _this=this;
                var jTest=$('<div>查找替换</div><div style="text-align:left;">查找：<input type="text" id="bText" /><br/>替换：<input type="text" id="aText" /><input type="button" id="xheSave" value="确定" /></div>');
                var jSave=$('#xheSave',jTest);
                 _this.showDialog(jTest);
				jSave.click(function(){
					var dataBefore = $('#bText',jTest).val();
					var dataAfter = $('#aText',jTest).val();
					if(dataBefore.length > 0 && dataAfter.length > 0){
						beforeEditorData = _this.getSource();
                    	var data = _this.getSource();
						dataBefore = dataBefore.replace("?", "\\?");
						data = data.replace(new RegExp(dataBefore,"gm"), dataAfter);
						_this.setSource(data);
					}
                    _this.hidePanel();
                    return false;    
                });
               
        	}}
		}
		
		var editors = $("#contentInfo").xheditor({
			plugins: plugins,
            tools:'full',
            skin:'default',
			html5Upload:false,
            upMultiple:false,
	    wordDeepClean:false,
            upImgUrl: "/upload/upload.action?_charset_=utf-8",
            upImgExt: "jpg,jpeg,gif,bmp,png"
        });

		
		$('#btnTest2').click(function(){editors.exec('searchReplace');});