原生javascript实现简单的datagrid数据表格【javascript】

//生成列索引 的 每列的第一项
self.columns[i] = [td];
$c(‘td’,self.copyTr).setAttribute(‘unselectable’,’on’);
//计算出 所显示的列索引 和 一共多少列num
self.isShowTrs.num++;
self.isShowTrs.clos[i]=true;
});

setAttr(this.table,{width:tWidth+options.fields.length+1})

//生成tbody里面的tr 只是生成 tr 根据perPage生成 它是显示当前一共有多少条数据的配置项
var i=0,
trsLen = options.perPage,
frag = doc.createDocumentFragment(),
arr = new Array(options.fields.length),
tr,
tds;
for(;i<trsLen;i++){
tr = this.copyTr.cloneNode(true);
tds = $q(‘td’,tr);
each(arr,function(i){
//生成列索引的所有项
self.columns[i].push(tds[i]);
});
$c(tr,frag);
}
this.tbody.appendChild(frag);
if(typeof dataConfig === ‘object’){
setTimeout(function(){self.getDataCallBack(dataConfig);},5);
}else{

}
/*
表格拖拽
表格排序
等一些操作
*/
addListener(this.thead,’click’,bindAsEventListener(this,this.sortTable));
addListener(this.thead,’mouseover’,bindAsEventListener(this,this.theadOver));
addListener(this.thead,’mouseout’,bindAsEventListener(this,this.theadOut));
addListener(this.thead,’mousedown’,bindAsEventListener(this,this.dragWidth));

/*
绑定弹出层click事件 进行排序
第2级菜单绑定 进行对列隐藏 显示
*/
addListener(this.popMenu,’click’,bindAsEventListener(this,this.menuClick));
addListener(this.popMenu,’mouseover’,bindAsEventListener(this,this.menuOver));
addListener(this.subPopMenu,’click’,bindAsEventListener(this,this.subMenuClick));

/*
放上去表格行的内容变粗
*/
addListener(this.tbody,’mousemove’,bindAsEventListener(this,this.rowHighlight,true));
addListener(this.tbody,’mouseout’,bindAsEventListener(this,this.rowHighlight,false));
addListener(this.tbody,’mousedown’,bindAsEventListener(this,this.selectRow,false));
addListener(this.tbody,’dblclick’,bindAsEventListener(this,this.editRow,false));

addListener(btnC,’click’,bindAsEventListener(this,this.modifyTr));

addListener(this.top,’click’,bindAsEventListener(this,this.pageBarClick));
addListener(this.bottom,’click’,bindAsEventListener(this,this.pageBarClick));
},
getDataCallBack : function(data){
var options = this.defaults,
self = this,
totla = 0;

this.data.length = 0;

if(data.data){
if(data.data[0].groupName){
var grouphead = this.grouphead;
grouphead.length = 0;

each(data.data,function(i,o){
var gtr = self.groupTr.cloneNode(true);
$q(‘td’,gtr)[0].innerHTML = o.groupName;
grouphead.push(gtr);
each(o.rows,function(j,d){
//this.data中数据的最后一项是 索引
d.push(i);
self.data.push(d);
});
});
this.showGroup=true;
}else{
each(data.data,function(i,o){
self.data.push(o);
});
this.showGroup=false;
}
}else{
return;
}
total = data.total
? data.total>=this.data.length
? data.total
: this.data.length
: this.data.length;
this.writeMessage(total);
this.buildTbody(options.currPage);
},
buildTbody : function(pageNum){
if(this.data.length===0){
this.tbody.style.display = ‘none’;
return;
}

var i = 0,
j = 0,
self = this,
data = this.data,
options = this.defaults,
trsLen = options.perPage,
tdsLen = options.fields.length,
tbody = this.tbody,
trs = tbody.getElementsByTagName(‘tr’),
start = pageNum*options.perPage,
tr;
this.rows.length = 0;

if(this.showGroup){
var group = {},
index,
arr = [],
insertTrs = this.insertTrs;

//清除掉之前插入的 分组tr
insertTrs.length!=0&&each(insertTrs,function(i,o){
self.tbody.removeChild(o);
});
insertTrs.length = 0;

//遍历填充数据 给this.rows赋值
var num = – 1;
for(;i<trsLen;i++){
tr = trs[i];

//如果没有数据了 就开始隐藏剩下的行
if(!data[i+start]){
tr.style.display = ‘none’;
continue;
}

//做标记 tr 里面的内容对应data中哪条数据
tr.setAttribute(‘dataIndex’,i+start);
tr.style.display = ‘block’;
tds = tr.getElementsByTagName(‘td’);
//x为 分组的不同组的标识
var x = data[i+start][data[i+start].length-1];
//用来判断后来的数据和之前的数据是不是同一个组的
//如果是同一个组的 选this.rows的最后一列添加
//不是同一个组的创建一列添加

num==x
? this.rows[this.rows.length-1].push(tr)
: (this.rows[this.rows.length] = [tr],num = x);

//用数组arr 记住每个分组的的第一个tr的位置 因为后面要插入tr头 i为位置 num为分组的序号
!(num in group)&&(group[num] = i + start,arr.push([num,i]));
for(j = 0;j<tdsLen;j++){
td = tds[j];
var txt = data[i+start][j] ===”?’ ‘:data[i+start][j];
render = options.fields[j].render;
td.innerHTML = render
?render(txt)
:txt;
}
tr.style.display = ”;
}

each(arr.reverse(),function(i,o){
insertTrs.push(self.grouphead[o[0]]);
self.tbody.insertBefore(self.grouphead[o[0]],trs[o[1]]);
});

}else{
for(;i<trsLen;i++){
tr = trs[i];
//做标记 tr 里面的内容对应data中哪条数据
tr.setAttribute(‘dataIndex’,i+start);
this.rows.push(tr);
//没有数据的tr隐藏掉
if(!data[i+start]){
tr.style.display = ‘none’;
continue;
}
tr.style.display = ”;
tds = $q(‘td’,tr);

for(j = 0;j<tdsLen;j++){
var txt = data[i+start][j] ===”?’ ‘:data[i+start][j];
render = options.fields[j].render;
tds[j].innerHTML = render
?render(txt)
:txt;
}
}
}

options.currPage = pageNum;
this.top.getElementsByTagName(‘span’)[0].innerHTML=this.bottom.getElementsByTagName(‘span’)[0].innerHTML = ~~pageNum+1;
var topAs = this.top.getElementsByTagName(‘a’),
bottomAs = this.bottom.getElementsByTagName(‘a’);
if(options.totalPage===1){
bottomAs[0].className = topAs[0].className = ‘first_div_no’;
bottomAs[1].className = topAs[1].className = ‘prev_div_no’;
bottomAs[2].className = topAs[2].className = ‘next_div_no’;
bottomAs[3].className = topAs[3].className = ‘last_div_no’;
}else if(options.currPage===0){
bottomAs[0].className = topAs[0].className = ‘first_div_no’;
bottomAs[1].className = topAs[1].className = ‘prev_div_no’;
bottomAs[2].className = topAs[2].className = ‘next_div’;
bottomAs[3].className = topAs[3].className = ‘last_div’;
}else if(options.currPage+1===options.totalPage){
bottomAs[0].className = topAs[0].className = ‘first_div’;
bottomAs[1].className = topAs[1].className = ‘prev_div’;
bottomAs[2].className = topAs[2].className = ‘next_div_no’;
bottomAs[3].className = topAs[3].className = ‘last_div_no’;
}else{
bottomAs[0].className = topAs[0].className = ‘first_div’;
bottomAs[1].className = topAs[1].className = ‘prev_div’;
bottomAs[2].className = topAs[2].className = ‘next_div’;
bottomAs[3].className = topAs[3].className = ‘last_div’;
}

this.tbody.style.display = ”;
this.loading_bg.style.display =’none’;
this.loading.style.display =’none’;

},
writeMessage : function(total){
var options = this.defaults,
base = total/options.perPage,
topSpans = this.top.getElementsByTagName(‘span’),
bottomSpans = this.bottom.getElementsByTagName(‘span’);
options.totalPage = base > parseInt(base)
? parseInt(base)+1
: base;
bottomSpans[0].innerHTML = topSpans[0].innerHTML = ~~options.currPage+1;
bottomSpans[1].innerHTML = topSpans[1].innerHTML = options.totalPage;
bottomSpans[2].innerHTML = topSpans[2].innerHTML = options.perPage;
bottomSpans[3].innerHTML = topSpans[3].innerHTML = total;
},
sortTable : function(e){
var elem = e.target || e.srcElement,
self = this,
options = this.defaults,
elemName = elem.nodeName.toLowerCase(),
showGroup = this.showGroup,
tdElem = elem,
name = elemName;

//拖拽的时候可能会触发一次click 原因是ie下全部绑定在this.table上 代码见拖拽
if($q(‘td’,elem).length>1)
return;
if(name !== ‘td’){
while(name !== ‘td’){
tdElem = tdElem.parentNode;
name = tdElem.nodeName.toLowerCase();
}
}
var issort = checkReg(tdElem.className,’sort’),
type = checkReg(tdElem.className,’type’)

//进行排序
if(elemName !==’a’&&type){

var frag = doc.createDocumentFragment();
if(this.sortColumn!==tdElem&&this.sortColumn!==”){
removeClass(this.sortColumn,’sort-asc’);
removeClass(this.sortColumn,’sort-desc’);
}
if(issort){
// 有分组，每组单独取反序 不分组，直接取反序
showGroup
? each(this.rows,function(i,o){ o.reverse();})
: this.rows.reverse();
tdElem.className = modify(tdElem.className,’sort’,issort===’asc’?’desc’:’asc’);
}else{
showGroup
? each(this.rows,function(i,o){
o.sort(self.compare(tdElem.getAttribute(‘clos’),type));
})
: this.rows.sort(this.compare(tdElem.getAttribute(‘clos’),type));

// 如果是正序排序，加上正序排列的标志。
if(this.ascSort){
addClass(tdElem,’sort-asc’);
}else{
// 反序排列则将原有排序取反，并加上排序标志
showGroup
? each(this.rows,function(i,o){ o.reverse();})
: this.rows.reverse();
addClass(tdElem,’sort-desc’);
}
}

// 将排序后的数据渲染到表格
var insertTrs = this.insertTrs,
len = insertTrs.length-1,
arr = [];

each(this.rows,function(i,tr){
arr = [insertTrs[len-i]].concat(tr);
showGroup
? each(arr,function(idx,obj){frag.appendChild(obj);})
: frag.appendChild(tr);
});
this.tbody.appendChild(frag);
this.sortColumn = tdElem;
}

//————————————————————————————-
/*
如果点击的是表头中的 A 标签，则弹出菜单
*/
if(elemName === ‘a’){
/*
当在菜单外面点击的时候会执行 改函数
用于清空 document的 click事件 隐藏层 去掉td,a的样式
*/
function documentClick(){
self.popMenu.style.display = ‘none’;
self.subPopMenu.style.display = ‘none’;
if(self.isMenuOpen){
removeListener(document,’click’);
removeClass($q(‘div’,self.isMenuOpen)[0],’theadfocus’);
$q(‘a’,self.isMenuOpen)[0].style.display = ‘none’;
}
self.isMenuOpen = false;
}

var pos = objPos(elem),
left = pos.left+Math.max(document.documentElement.scrollLeft,document.documentElement.scrollLeft),
top = pos.top +Math.max(document.documentElement.scrollTop,document.documentElement.scrollTop)+ elem.offsetHeight,
td = elem.parentNode.parentNode,
lis = $q(‘li’,this.popMenu);

//如果this.isMenuOpen是真 表示 层是打开状态的 执行关闭相关的处理
this.isMenuOpen&&documentClick();

if(!checkReg(td.className,’type’)){
addClass(lis[0],’disabled’);
addClass(lis[1],’disabled’);
}else{
removeClass(lis[0],’disabled’);
removeClass(lis[1],’disabled’);
}
Sys.ie
? e.cancelBubble = true
: e.stopPropagation();
//当显示层的时候 吧该td附到this.isMenuOpen上
this.isMenuOpen = td;
addListener(document,’click’,documentClick);
setStyle(this.popMenu,{
left : left+’px’,
top : top+’px’,
display :’block’
});
}
},
compare : function(n,type){
var sortType = this.defaults.sortType,
txt =Sys.ie?’innerText’:’textContent’;
!sortType[type]&&(type = ‘string’);
return function(a1,a2){
a1 = sortType[type](a1.cells[n][txt]);
a2 = sortType[type](a2.cells[n][txt]);
return a1==a2?0:a1
}
},
pageBarClick : function(e){
var elem = e.target || e.srcElement,
options = this.defaults,
typePage = elem.getAttribute(‘page’),
isGo = elem.getAttribute(‘go’);
isDel = elem.getAttribute(‘del’);

if(typePage){
var number = {
start : 0,
end : options.totalPage-1,
next : options.currPage-1,
pre : options.currPage+1
}[typePage];
this.toPage(number);
}
if(isDel){
this.del();
}

if(isGo){
var number = ~~elem.parentNode.getElementsByTagName(‘input’)[0].value-1;
this.toPage(number);
}
},
toPage : function(num){
if(typeof num !==’number’||isNaN(num))return;
var options = this.defaults,
self = this,
dataConfig = options.dataConfig;
//如果请求的分页数小于0就默认为0 如果打越最大分页数 就默认为最大分页数
num>=options.totalPage
&&(num = options.totalPage-1);
num<0&&(num = 0); //s为当前面板的第一页 e为当前面板的最后
var basePage = options.count/options.perPage,
s = options.page*basePage,
e = s + basePage-1;
this.tbody.style.display = ‘none’;
this.loading_bg.style.display = ”;;
this.loading.style.display = ”;
setTimeout(function(){self.buildTbody(num);},10);

},
del : function(){
//做删除的时候需要有主键的索引 我全部保存在tr的
var selectedRows = this.selectedRows,
arr = []
for(var name in selectedRows){
arr.push(selectedRows[name].getAttribute(‘dataIndex’));
}
alert(‘选择了主键值为’+arr.join(‘,’));
},
theadOver : function(e){
var elem = e.target || e.srcElement;
if(elem.nodeName.toLowerCase() === ‘div’){
$q(‘a’,elem)[0].style.display = ‘block’;
addClass(elem,’theadfocus’);
}
},
theadOut : function(e){
var elem = e.target || e.srcElement,
toElem = e.toElement||e.relatedTarget,
elemName = elem.nodeName.toLowerCase();

if(this.isMenuOpen && contains(this.isMenuOpen,elem))
return;

//如果离开了当前的td 隐藏显示出来的东西
if(elemName === ‘div’&& elem !== this.isMenuOpen){
if(!contains(elem,toElem)){
$q(‘a’,elem)[0].style.display = ‘none’;
removeClass(elem,’theadfocus’);
}
}

if(elemName === ‘a’ || elemName ===’span’ || elemName === ‘p’){
var parent = elem.parentNode;
if(!contains(elem,toElem)){
$q(‘a’,parent)[0].style.display = ‘none’;
removeClass(parent,’theadfocus’);
}
}
},
menuClick : function(e){
var elem = e.target || e.srcElement,
className = this.isMenuOpen.className;
if(elem.nodeName.toLowerCase()===’a’){
//如果td的样式中不存在type 也就是说不需要排序 则不进行排序 阻止事件冒泡
if(!checkReg(className,’type’)){
Sys.ie
? e.cancelBubble = true
: e.stopPropagation();
return;
}

//如果a标签 的menuType <br