common.js

CMS4J 是 JAVA / JSP 版网站管理系统 （Content Manage System For Java）的简称

var article_page_num_param_name = "pn";

function isNull(formName,objectName,message){
	formObject = eval("document." + formName + "." + objectName);
	if (formObject.value == ""){
		alert(message);
		formObject.focus();
		return true;
	}
	return false;
}

//URL中search属性的管理
function searchManage(searchStr,operType,name,value){
	var searchArray = new Array();
	var returnStr = "";		//最终返回的字符串
	if (searchStr != ""){
		searchArray = searchStr.split("&");	//以＆为分隔符，将search中的各变量分开，并存在数组中
		
		//检索当前searchStr中是否存在要操作的name，如果有，则删除它
		for(var i = 0 ; i < searchArray.length ; i ++){
			if (searchArray[i] != ""){
				//开始解析各个"参数名=值"这样的数据
				var paramArray = new Array();
				paramArray = searchArray[i].split("=");		//以＝号为分隔符，将变量的名子一值分开
				if (paramArray[0] == name){
					//在URL中找到了即将要添加的name变量，现在删除它，然后添加一个新的
					searchArray.splice(i,1);
					i--;
				}
			}
		}
	}
	
	//在当前的search中添加一个新变量，如果这个变量已经存在，则在上面的代码中，已经删除了
	if (operType == "add"){
		returnStr = name +  "=" + value;
	}
	
	//因为上面已经删除，故无需再操作
	if (operType == "remove"){
	}
	
	
	for(var j = 0; j < searchArray.length; j++){
		if (searchArray[j] != ""){
			returnStr += "&" + searchArray[j];
		}
	}

	return returnStr;
	
}

function getSearchValue(searchStrParam,name){
	if (searchStrParam == "URL"){
		searchStr = this.location.search.substr(1);
	}else{
		searchStr = searchStrParam;
	}
	
	
	var searchArray = new Array();
	var returnStr = "";		//最终返回的字符串
	if (searchStr != ""){
		searchArray = searchStr.split("&");	//以＆为分隔符，将search中的各变量分开，并存在数组中
		
		//检索当前searchStr中是否存在要操作的name，如果有，则删除它
		for(var i = 0 ; i < searchArray.length ; i ++){
			if (searchArray[i] != ""){
				//开始解析各个"参数名=值"这样的数据
				var paramArray = new Array();
				paramArray = searchArray[i].split("=");		//以＝号为分隔符，将变量的名子一值分开
				if (paramArray[0] == name){
					returnStr = paramArray[1];
					return returnStr;
				}
			}
		}
	}
	
	return "";
}


//添加一个新的变量，在添加之前，首先移除与此同名的变量
function addSearch(searchStr,name,value){
	if (searchStr == "URL"){
		return searchManage(this.location.search.substr(1),"add",name,value);
	}
	return searchManage(searchStr,"add",name,value);	
}


//删除一个变量
function removeSearch(searchStr,name){
	if (searchStr == "URL"){
		return searchManage(this.location.search.substr(1),"remove",name,"");	
	}
	return searchManage(searchStr,"remove",name,"");	
}


//跳转至第N页
function pageJump(){
	var e = event.srcElement;
	this.location.search = addSearch("URL",article_page_num_param_name,e.value);
}

//取消选择所有checkbox
function unselectall(checkBoxID){
	var selectAllObj = document.getElementById(checkBoxID);
    if(selectAllObj.checked){
 		selectAllObj.checked = selectAllObj.checked&0;
    }
}

//选择所有checkbox
function checkAll(form){
  var eSource = window.event.srcElement;
  for (var i=0;i<form.elements.length;i++){
    var e = form.elements[i];
    if (e.Name != eSource.name && e.disabled == false)
       e.checked = eSource.checked;
    }
}

//选择所有CheckBox
function checkAllForCheckBox(element){
	var eSource = window.event.srcElement;
	//当只有一个元素时，用for那段代码就无法取到element.length，故添加了此代码
	if (element.Name != eSource.name && element.disabled == false)
       element.checked = eSource.checked;
	   
	for (var i=0;i<element.length;i++){
    var e = element[i];
    if (e.Name != eSource.name && e.disabled == false)
       e.checked = eSource.checked;
    }
}



/**
* 组件的显示控制
* displayElement	要显示的元素名称
* hideElement		要隐藏的元素名称
**/
function displayCtrl(displayElement,hideElement){
	if(displayElement != ""){
		var displayObj = document.getElementById(displayElement);
		displayObj.style.display = "";
	}
	
	if(hideElement != ""){
		var hideObj = document.getElementById(hideElement);
		hideObj.style.display = "none";
	}
	
	
}


//第一页
function first_page(){
	this.location.search = addSearch("URL",article_page_num_param_name,1);
}

//下一页
function next_page(pageCount){
	var pn = getSearchValue("URL",article_page_num_param_name);
	if (pn == "" || pn == null){
		var nextPage = 2;
	}else{
		var nextPage = parseInt(pn) + 1;
	}
	
	
	
	if (nextPage > pageCount){
		nextPage = pageCount;
	}
	
	this.location.search = addSearch("URL",article_page_num_param_name,nextPage);
	
}

//上一页
function prev_page(){
	var pn = getSearchValue("URL",article_page_num_param_name);
	if (pn == "" || pn == null){
		first_page();
		return;
	}
	
	var nextPage = parseInt(pn) - 1;
	
	if (nextPage < 1){
		nextPage = 1;
	}
	
	this.location.search = addSearch("URL",article_page_num_param_name,nextPage);
}

//最未页
function last_page(pageCount){
	this.location.search = addSearch("URL",article_page_num_param_name,pageCount);
}