AngularJS中的Directive自定义一个表格

<table>
<thead>
<tr>
<th>name</th>
<th>street</th>
<th>age</th>
</tr>
</thead>
<tbody>
<tr>
<td>></td>
<td>></td>
<td>></td>
</tr>
</tbody>
</table>
<div>4行</div>

<table-helper datasource="customers" clumnmap="[{name: 'name'}, {street: 'street'}, {age: 'age'}, {url: 'url', hidden: true}]"></table-helper>

var tablehelper = function(){
var template = '',
link = function(scope, element, attrs){
}
return {
restrict: 'e',
scope: {
columnmap: '=',
datasource: '='
},
link:link,
template:template
}; 
}
angular.module('directivemodule')
.directive('tablehelper', tablehelper); 

scope.$watchcollection('datasource', render);
//初始化表格
function render(){
if(scope.datasource && scope.datasource.length){
table += tablestart;
table += renderheader();
table += renderrows() + tableend;
//加载统计行
rendertable();
}
} 

//加载头部
function renderheader(){
var tr = '<tr>';
for(var prop in scope.datasource[0]){
//{name: 'david',street: '1234 anywhere st.',age: 25,url: 'index.html'}
//根据原始列名获取别名,并考虑了是否显示列的情况
var val = getcolumnname(prop);
if(val){
//visibleprops存储的是原始列名
visibleprops.push(prop);
tr += '<th>' + val + '</th>';
}
}
tr += '</tr>';
tr = '<thead>' + tr '</thead>';
return tr;
}
//加载行
function renderrows(){
var rows = '';
for(var i = 0, len = scope.datasource.length; i < len; i++){
rows += '<tr>';
var row = scope.datasource[i];
for(var prop in row){
//当前遍历的原始列名是否在visibleprops集合中，该集合存储的是原始列名
if(visibleprops.indexof(prop) > -1){
rows += '<td>' + row[prop] + '</td>';
}
}
rows += '</tr>';
}
rows = '<tbody>' + rows + '</tbody>';
return rows;
}
//加载统计行
function rendertable(){
table += '<br /><div class="rowcount">' + scope.datasource.length + '行</div>';
element.html(table);
table = '';
} 

//根据原始列名获取列的别名，并考虑是否隐藏列的情况
function getcolumnname(prop){
if(!scope.columnmap) return prop;
//得到[{name: 'name'}]
var val = filtercolumnmap(prop);
if(val && val.length && !val[0].hidden) return val[0][prop];
else return null;
}

//比如根据name属性，这里得到[{name: 'name'}]
//[{name: 'name'}, {street: 'street'}, {age: 'age'}, {url: 'url', hidden: true}]
function filtercolumnmap(prop) {
var val = scope.columnmap.filter(function(map) {
if (map[prop]) {
return true;
}
return false;
});
return val;
}

(function(){
var tablehelper = fucntion(){
var template = '<div class="tablehelper"></div>',
link = function(scope, element, attrs){
var headercols = [], //表头列们
tablestart = '<table>',
tableend = '</table>',
table = '',
visibleprops = [],//可见列
sortcol = null,//排序列
sortdir =1;
//监视集合
sscope.$watchcollection('datasource', render);
//给表头th绑定事件
wireevents();
//初始化表格
function render(){
if(scope.datasource && scope.datasource.length){
table += tablestart;
table += renderheader();
table += renderrows() + tableend;
//加载统计行
rendertable();
}
}
//给th添加click事件
function wireevents()
{
element.on('click', function(event){
if(event.srcelement.nodename === 'th'){
//获取列的名称
var val = event.srcelement.innerhtml;
//根据列的别名获取原始列名
var col = (scope.columnmap) ? getrawcolumnname(val) : val;
if(col){
//对该列进行排序
sort(col);
}
}
});
}
//给某列排序
function sort(col){
if(sortcol === col){
sortdir = sortdir * -1;
}
sortcol = col;
scope.datasource.sort(function(a,b){
if(a[col] > b[col]) return 1 * sortdir;
if(a[col] < b[col]) return -1 * sortdir;
return 0;
});
//重新加载表格
render();
}
//加载头部
function renderheader(){
var tr = '<tr>';
for(var prop in scope.datasource[0]){
//{name: 'david',street: '1234 anywhere st.',age: 25,url: 'index.html'}
//根据原始列名获取别名,并考虑了是否显示列的情况
var val = getcolumnname(prop);
if(val){
//visibleprops存储的是原始列名
visibleprops.push(prop);
tr += '<th>' + val + '</th>';
}
}
tr += '</tr>';
tr = '<thead>' + tr '</thead>';
return tr;
}
//加载行
function renderrows(){
var rows = '';
for(var i = 0, len = scope.datasource.length; i < len; i++){
rows += '<tr>';
var row = scope.datasource[i];
for(var prop in row){
//当前遍历的原始列名是否在visibleprops集合中，该集合存储的是原始列名
if(visibleprops.indexof(prop) > -1){
rows += '<td>' + row[prop] + '</td>';
}
}
rows += '</tr>';
}
rows = '<tbody>' + rows + '</tbody>';
return rows;
}
//加载统计行
function rendertable(){
table += '<br /><div class="rowcount">' + scope.datasource.length + '行</div>';
element.html(table);
table = '';
}
//根据列的别名获取原始列名
function getrawcolumnname(friendlycol) {
var rawcol;
//columnmap =[{name: 'name'}, {street: 'street'}, {age: 'age'}, {url: 'url', hidden: true}]
scope.columnmap.foreach(function(colmap) {
//{name: 'name'}
for (var prop in colmap) {
if (colmap[prop] === friendlycol) {
rawcol = prop;
break;
}
}
return null;
});
return rawcol;
}
function pushcolumns(rawcol, renamedcol) {
visibleprops.push(rawcol);
scope.columns.push(renamedcol);
}
//比如根据name属性，这里得到[{name: 'name'}]
//[{name: 'name'}, {street: 'street'}, {age: 'age'}, {url: 'url', hidden: true}]
function filtercolumnmap(prop) {
var val = scope.columnmap.filter(function(map) {
if (map[prop]) {
return true;
}
return false;
});
return val;
} 
//根据原始列名获取列的别名，并考虑是否隐藏列的情况
function getcolumnname(prop){
if(!scope.columnmap) return prop;
//得到[{name: 'name'}]
var val = filtercolumnmap(prop);
if(val && val.length && !val[0].hidden) return val[0][prop];
else return null;
}
};
return {
restrict: 'e',
scope: {
columnmap: '=',
datasource: '='
},
link:link,
template:template
};
};
angular.module('directivemodule')
.directive('tablehelper', tablehelper);
}());