engine.js

EasyJWeb是基于java技术

EasyAjax=function(){};
EasyAjax._defaultPath="ejf/easyajax";
EasyAjax.DEBUG=false;
EasyAjax.preHook=null;
EasyAjax.postHook=null;
EasyAjax._randomId=function()
{
var random = Math.floor(Math.random() * 10001);
var id = (random + "_" + new Date().getTime()).toString();
return id;
}
EasyAjax._execute=function(scriptName,method,paraTypes)
{
 var args = [];
  for (var i = 0; i < arguments.length -3; i++) {
    args[i] = arguments[i + 3];
  }
  
  var params,callData,paras="";
  var lastArg = args[args.length - 1]; 
  if (typeof lastArg == "function") {
   //最后一个参数是否为回调函数　
    callData = { callback:args.pop() };
    params = args;
  }
  else if (lastArg != null && typeof lastArg == "object" && lastArg.callback != null && typeof lastArg.callback == "function") {
  //最后一个参数是回调对象
    callData = args.pop();
    params = args;
  } 
  else
  {
	callData={callback:function(){}};
  	params=args;   
	}
  for(var i=0;i<params.length;i++)
  {
	paras+=EasyAjax.parseParameter(i,params[i]);
  } 
  if(paraTypes!=null){
  for(var i=0;i<paraTypes.length;i++)
  {
  if(paraTypes[i]!=null)
  paras+="ajax-call-p"+i+".java-type="+paraTypes[i]+"&";
  }}  

 if(paras)paras=paras.replace(/%/g,"%25");//处理特殊字符% 
 var remoteCallId=EasyAjax._randomId();
 EasyAjax.currentCallId=remoteCallId;
 if(EasyAjax.DEBUG)alert(paras);  
 if(EasyAjax.preHook)EasyAjax.preHook();
 var myAjax = new Ajax.Request(EasyAjax._defaultPath+"/ajaxCall",{
						evalScripts:true, 						
						method:"post",
						parameters:"scriptName="+scriptName+"&methodName="+method+"&remoteCallId="+remoteCallId+"&"+paras,
						onComplete:function(data)
{
if(EasyAjax.postHook)EasyAjax.postHook();
if(EasyAjax.DEBUG)alert(data.responseText);
try{
var s="EasyAjax._response("+data.responseText+",callData.callback);";
eval(s);
}
catch(e)
{
}
}						
});
}
EasyAjax._response=function(result,callback)
{
try{
if(!result.error)
{
if(EasyAjax.currentCallId==result.remoteCallId)
callback(result.obj);
}
else
{
alert(result.obj);
}
}
catch(e)
{
alert(e);
}
}
EasyAjax.parseParameter=function(index,obj)
{
var s="";
var prex=null;
var propertyPrex="ajax-call-p"+index;
if(obj==null)return propertyPrex+".value=null&";
if(arguments.length>2)prex=arguments[2];
if(typeof obj=="object"){
if(obj.constructor==Array)
{
s+=propertyPrex+".value=[";
for(var i=0;i<obj.length;i++)
{
s+=this._paraseJSon2String(obj[i]);
if(i<obj.length-1)s+=",";
}
s+="]";
}
else{
for(property in obj)
{
if((typeof obj[property])!="object")
{s+=propertyPrex+(prex==null?"":"."+prex)+"."+property+"="+obj[property]+"&";
}
else s+=this.parseParameter(index,obj[property],prex==null?property:prex+"."+property);
}
}
}
else s=propertyPrex+".value="+obj;
s+="&";
return s;
}

EasyAjax._paraseJSon2String=function(obj)
{
if(obj==null)return null;
if(typeof obj=="object")
{
if(obj.constructor==Array)
{
var s="[";
for(var i=0;i<obj.length;i++)
{
s+=this._paraseJSon2String(obj[i]);
if(i<obj.length-1)s+=",";
}
s+="]";
return s;
}
else
{
var s="{";
for(p in obj)
{
s+=p+"="+this._paraseJSon2String(obj[p])+",";
}
//s=s.substring(0,s.length()-1);
s+="}";
return s;
}
}
else
return obj;
}
EasyAjax.setPreHook=function(hook)
{
EasyAjax.preHook=hook;
}
EasyAjax.setPostHook=function(hook)
{
EasyAjax.postHook=hook;
}
EasyAjax.useLoadingMessage = function(message) {
  var loadingMessage;
  if (message) loadingMessage = message;
  else loadingMessage = "Loading";
  EasyAjax.setPreHook(function() {
    var disabledZone = $('disabledZone');
    if (!disabledZone) {
      disabledZone = document.createElement('div');
      disabledZone.setAttribute('id', 'disabledZone');
      disabledZone.style.position = "absolute";
      disabledZone.style.zIndex = "1000";
      disabledZone.style.left = "0px";
      disabledZone.style.top = "0px";
      disabledZone.style.width = "100%";
      disabledZone.style.height = "100%";
      document.body.appendChild(disabledZone);
      var messageZone = document.createElement('div');
      messageZone.setAttribute('id', 'messageZone');
      messageZone.style.position = "absolute";
      messageZone.style.top = "0px";
      messageZone.style.right = "0px";
      messageZone.style.background = "red";
      messageZone.style.color = "white";
      messageZone.style.fontFamily = "Arial,Helvetica,sans-serif";
      messageZone.style.padding = "4px";
      disabledZone.appendChild(messageZone);
      var text = document.createTextNode(loadingMessage);
      messageZone.appendChild(text);
    }
    else {
      $('messageZone').innerHTML = loadingMessage;
      disabledZone.style.visibility = 'visible';
    }
  });
EasyAjax.setPostHook(function() {
    $('disabledZone').style.visibility = 'hidden';
  });
};


/////下面开始属于EasyAjax的属性
EasyAjaxUtil={};
EasyAjaxUtil.showPageInfo=function(tag)
{
if(!this.pageList)
{
this.pageList={rowCount:0,pages:0,pageSize:15,currentPage:1,result:null};
}
var currentPage=this.pageList.currentPage;
var  pages=this.pageList.pages;
var s="第<strong>"+currentPage+"</strong>页 共<strong>"+pages+"</strong>页<span>[共<b>"+this.pageList.rowCount+"</b>条记录]</span> 　　分页：";
if (currentPage > 1) {
			s += "<a href=# onclick='return EasyAjaxUtil.gotoPage(1)'>首页</a> ";
			s += "<a href=# onclick='return EasyAjaxUtil.gotoPage(" + (currentPage - 1)
					+ ")'>上一页</a> ";
		}
		var beginPage = currentPage - 3 < 1 ? 1 : currentPage - 3;
		if (beginPage < pages) {
			s += "第　";
			for (var i = beginPage, j = 0; i <= pages && j < 6; i++, j++) {
				if (i == currentPage)
					s += "<font color=red>" + i + "</font> ";
				else
					s += "<a href=# onclick='return EasyAjaxUtil.gotoPage(" + i + ")'>" + i
							+ "</a> ";
			}
			s += "页　";
		}
if (currentPage < pages) {
s += "<a href=# onclick='return EasyAjaxUtil.gotoPage(" + (currentPage + 1)
					+ ")'>下一页</a> ";
			s += "<a href=# onclick='return EasyAjaxUtil.gotoPage(" +pages + ")'>末页</a> ";
		}
		s+=" 转到指定页:<input type=text id='directGotoSomePage' size=2 class='form_text'>　<input type=button onclick=EasyAjaxUtil.gotoPage($('directGotoSomePage').value) value='跳转' class='button'>";
if(!tag)tag=$("pageInfo");
tag.innerHTML=s;
}
EasyAjaxUtil.gotoPage=function(i)
{
if(i<1)
{
alert("页码必须大于0");
return;
}
if(i>this.pageList.pages)
{alert("页码不能超过"+this.pageList.pages);return;}
if(!this.queryPage)this.queryPage=this._defaultQueryPage;
this.queryPage(i);
}
EasyAjaxUtil._defaultQueryPage=function(i)
{
if(this.listData)this.listData(i);
}
EasyAjaxUtil.getCalendar=function(objId)
{

	var obj=$(objId);
    if (!obj){
	  //如果是文本框的onmousedown世间是由脚本绑定的,且没有参数  modified by qiuchun
	  if (event.srcElement){
	    var pchild = event.srcElement;
	    if (pchild.type && pchild.type.toLowerCase() == "text")
	      obj = pchild;
	  }
	}
	var x=event.screenX;
	var y=event.screenY;
	var result=window.showModalDialog('easywidget.ejf?easyJWebCommand=calendar','Calendar',"dialogLeft:"+x+"px;dialogTop:"+y+"px;dialogWidth:195px;dialogHeight:230px;help:no;status:no");	
	if(result!=null)
	obj.value=result;
		//eval(arguments[0]+".value=result");		
	return false;
}
EasyAjaxUtil.loadPage=function(url,paras,targetId)
{
var resultId=targetId;
if(!resultId)resultId="main";
if(arguments.length>2 && (typeof arguments[arguments.length-1])=="string")
{
resultId=arguments[arguments.length-1];
}
if(EasyAjax.preHook)EasyAjax.preHook();
var myAjax = new Ajax.Request(url,{
						evalScripts:true, 						
						method:"post",
						parameters:paras,
						onComplete:function(data)
{
if(EasyAjax.postHook)EasyAjax.postHook();
if(EasyAjax.DEBUG)alert(data.responseText);
try{
	if(typeof targetId  =="function")targetId(data);
	else{
	var s="Element.update("+resultId+",data.responseText);";
	eval(s);}
}
catch(e)
{
	alert(e);
}
}						
});
}
/**
使用ajax的方式来提交表单，表单执行的结果返回到targetId指定的html中
*/
EasyAjaxUtil.ajaxSubmit=function(formName,targetId)
{
		var target=targetId?targetId:"main";
		var theForm=$(formName);
		var url=theForm.action;
		var paras=Form.serialize(theForm);				
		EasyAjaxUtil.loadPage(url,paras,target);
}

EasyAjaxUtil.loadStaticPage=function(url)
{
var callBack=null;
var resultId="main";
if(arguments.length>1 && (typeof arguments[arguments.length-1])=="function")
{
callBack=arguments[arguments.length-1];
}
if(arguments.length>2 && (typeof arguments[arguments.length-2])=="string")
{
resultId=arguments[arguments.length-2];
}
$(resultId).innerHTML="<font color=blue>正在加载数据，请稍候...</font>";
var myAjax = new Ajax.Request("easywidget.ejf?easyJWebCommand=loadPage&url="+url,{
						evalScripts:true, 						
						method: 'POST',
						onComplete:function(req){
						$(resultId).innerHTML="完成加载！";						
						Element.update(resultId,req.responseText);
						if(callBack!=null)callBack.call(this);
						}
					});
}


/*
模式对话框，用于弹出输入信息
*/
ModalDialog={};
ModalDialog.result=null;//选择结果
ModalDialog.callback=null;//回调函数
ModalDialog.dialogData=null;//下拉选择框中的数据
ModalDialog.show=function(width,height,url,callback,title)
{
var x=event.clientX ,y=event.clientY+10;
if(x>880)x=880;
var modalDialog =$("modalDialog");
if(!title)title="";
if(callback)ModalDialog.callback=callback;
if(!modalDialog)
{    modalDialog= document.createElement('div');
      modalDialog.setAttribute('id', 'modalDialog');
      modalDialog.style.position = "absolute";
      modalDialog.style.zIndex = "1000";     
	  modalDialog.style.background = "#BBD6FD";
	  modalDialog.style.border="1px solid #008400";
	  modalDialog.innerHTML="<table  cellSpacing=0 cellPadding=0 width=100%><TR><TD height=20 align=center class=titletxt bgcolor=#C1DAFF style=\"height:16px; border-bottom:1px solid #008400; color: #5575CA\">请选择"+title+"</TD></TR></table>";
	  modalDialog.innerHTML+="<div id=\"modalDialogContent\"></div>";
	  modalDialog.innerHTML+="<select id=\"modalDialogSelectList\" class=\"intro\" size=\"10\" onDblClick=\"ModalDialog.choice(this.selectedIndex);\" style=\"width:99%\"></select>";
	  modalDialog.innerHTML+="<table><TR><TD height=20 align=\"center\" class=\"titletxt\" style=\"padding-bottom:2px;\"><input type=\"button\" name=\"ok\" value=\"确定\" onClick=\"ModalDialog.choice($('modalDialogSelectList').selectedIndex);\" class=\"button\" />　<input type=\"button\" name=\"cancel\" value=\"取消\" onClick=\"ModalDialog.cancel();\" class=\"button\" />　<input type=\"button\"  value=\"关闭\" onClick=\"ModalDialog.close();\" class=\"button\" /></TD></TR></TBODY></TABLE>";
	  //  modalDialog.innerHTML="层的测试";   
	 document.body.appendChild(modalDialog);
	 }
modalDialog.style.left =x+"px";
modalDialog.style.top = y+"px";
modalDialog.style.width = width;
modalDialog.style.height = height; 
if(url)loadPage(url,null,"modalDialogContent");
modalDialog.style.visibility="visible";
}
ModalDialog.setX=function(x)
{
if($("modalDialog"))$("modalDialog").style.left=x+"px";
}
ModalDialog.setY=function(y)
{
if($("modalDialog"))$("modalDialog").style.top=y+"px";
}
ModalDialog.close=function()
{
var modalDialog =$("modalDialog");
if(modalDialog)
{ 
//modalDialog.style.visibility="hidden";
Element.remove(modalDialog);
}
}
ModalDialog.choice=function(index)
{
if(this.dialogData)
{
if(index<this.dialogData.length){
ModalDialog.result=this.dialogData[index];
if(this.callback)ModalDialog.callback(ModalDialog.result);
}
else alert("返回的坐标值超过对话框中的数据行数!");
}
else alert("对话框中没有数据");
this.close();
}
ModalDialog.choiceCustomValue=function(result)
{
ModalDialog.result=result;
if(ModalDialog.callback)ModalDialog.callback(result);
this.close();
}
ModalDialog.cancel=function()
{
ModalDialog.result=null;
if(ModalDialog.callback)ModalDialog.callback(null);
this.close();
}
ModalDialog.defaultQueryResult=function(pageList){
$("modalDialogSelectList").options.length=0;
ModalDialog.dialogData=pageList.result;
if(pageList.rowCount>0)
{
for(var i=0;i<pageList.result.length;i++)
{
$("modalDialogSelectList").options[i]=new Option(pageList.result[i].title,pageList.result[i].id+";"+pageList.result[i].title);
}
}
}
EasyAjaxUtil.ModalDialog=ModalDialog;

//动态加载Json数组中的内容
EasyAjaxUtil.daymicLoadSelect=function(id,url)
				{
				if(EasyAjax.preHook)EasyAjax.preHook();
				EasyAjaxUtil.daymicLoadUrl(url,function(req)
				{
				var	ret=eval(req.responseText);
				ret.pop();
				$(id).options.length=1;
				for(var i=0;i<ret.length;i++)
				{				
				$(id).options[$(id).length]=new Option(ret[i].title,ret[i].value);
				}
				if(EasyAjax.postHook)EasyAjax.postHook();
				});
				}

//动态加载指定url
EasyAjaxUtil.daymicLoadUrl=function(url,callback)
				{
				var pars=null;
				if(EasyAjax.preHook)EasyAjax.preHook();
					var myAjax = new Ajax.Request(url,{
						evalScripts:true, 						
						method: 'POST',
						onComplete:function(req){if(EasyAjax.postHook)EasyAjax.postHook();callback(req);}
						});
				}