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//对datagrid的参数进行扩展,增加了以下3个参数
$.extend($.fn.datagrid.defaults, {
groupHeight: 25,//分组区域出现时的高度
expanderWidth: 30,//分组左侧的+-号的宽度
groupStyler: function(value,rows){return ''}//组的css样式
});
//定义全新的分组样式的grid视图,继承默认的视图
var groupview = $.extend({}, $.fn.datagrid.defaults.view, {
//会执行2次,第一次是冻结列,第二次是指标列(非冻结)
render: function(target, container, frozen){
var state = $.data(target, 'datagrid');
var table = [];
this.currentIndex = 0;
var opts = state.options;
var groupFields = opts.groupField;//分组字段
if(typeof groupFields == 'string'){
groupFields = groupFields.split(',');
}
//每个汇总字段的计数
this.fieldCountMap = {};
for(var i=0;i<groupFields.length;i++){
this.fieldCountMap[groupFields[i]] = 0;
}
var groupOrder = this.groupOrder;
table.push('<table class="datagrid-btable" cellspacing="0" cellpadding="0" border="0"><tbody>');
for(var i=0; i<groupOrder.length; i++){
var nextOrderIndex = [];
//默认下一个为空
if(i < groupOrder.length - 1){
nextOrderIndex = groupOrder[i+1];
}
//上一个,默认也为空
var lastOrderIndex = [];
if(i>0){
lastOrderIndex = groupOrder[i-1];
}
if(lastOrderIndex.length == 0 || lastOrderIndex[0]!==groupOrder[i][0]){
//table.push('<table class="datagrid-btable" cellspacing="0" cellpadding="0" border="0"><tbody>');
}
table.push(this.renderGroup.call(this, target, groupOrder[i],nextOrderIndex, frozen));
if(nextOrderIndex.length==0 || nextOrderIndex[0]!==groupOrder[i][0]){
//table.push('</tbody></table>');
}
}
table.push('</tbody></table>');
if(!frozen){
state.data.rows = this.newRows;
}
$(container).html(table.join(''));
},
renderGroup: function(target, groupIndexArray,nextGroupIndexArray, frozen){
var state = $.data(target, 'datagrid');
var opts = state.options;
var fields = $(target).datagrid('getColumnFields', frozen);
var frozenFields = $(target).datagrid('getColumnFields', true);
var hasFrozen = opts.frozenColumns && opts.frozenColumns.length;
var groups = this.groups;
if (frozen){
if (!(opts.rownumbers || hasFrozen)){
return '';
}
}
var groupFields = opts.groupField;//分组字段
if(typeof groupFields == 'string'){
groupFields = groupFields.split(',');
}
var table = [];
var nestedObj = groups;
var groupname = '';
var groupPos = -1;
//获取当前小组的数据
for(var i=0;i<groupIndexArray.length;i++){
groupname = groupIndexArray[i];
groupPos = i;
nestedObj = nestedObj[groupname];
}
var dataLen = nestedObj.length;
if(true){
//是否添加小计:
dataLen++;
}
for(var j=0; j<dataLen; j++) {
var rowData = null;
var isSum = false;
if(j==nestedObj.length){
var jo = opts.sumFormatter.call(target, groupname, nestedObj);
rowData = buildFrozenSumRow(nestedObj,groupPos,groupname,jo);
isSum = true;
}else{
//if ((frozen && hasFrozen)){
// var oldval = this.fieldCountMap[groupFields[groupPos]];
// this.fieldCountMap[groupFields[groupPos]] = oldval+1;
//}
rowData = nestedObj[j];
}
if (!(frozen && hasFrozen)){
this.newRows.push(rowData);
}
var htmltr = renderRowExt(this,rowData,isSum);
table.push(htmltr);
this.currentIndex++;
}
//判断是否需要上级(上上级)的小计:
for(var m=groupIndexArray.length-2;m>=0;m--){
//倒数第二个开始
var isAddExtraRow = false;
var curGroup = groupIndexArray[m];
if(nextGroupIndexArray.length == 0){
isAddExtraRow = true;
}else{
var nextGroup = nextGroupIndexArray[m];
if(curGroup == nextGroup){
break;
}else{
isAddExtraRow = true;
}
}
//如果需要添加合计页
if(isAddExtraRow == true){
var jo = opts.sumFormatter.call(target, curGroup, nestedObj);
var rowData = buildFrozenSumRow(nestedObj,m,curGroup,jo);
var htmltr = renderRowExt(this,rowData,true);
table.push(htmltr);
this.currentIndex++;
if (!(frozen && hasFrozen)){
this.newRows.push(rowData);
}
}
}
return table.join('');
/**
* [buildFrozenSumRow 构建冻结区块的合计信息]
* @param {[type]} rows [description]
* @param {[type]} groupPos [description]
* @param {[type]} title [description]
* @return {[type]} [description]
*/
function buildFrozenSumRow(rows,groupPos,title,jo){
var keyField = '';
if(frozenFields.length>groupPos+1){
keyField = frozenFields[groupPos+1];
}
if(!jo){
jo = {};
}
if(rows.length>0){
jo = $.extend(jo,rows[0]);
}
if(keyField){
jo[keyField] = title+' 小计';
}
if(frozenFields.length>groupPos+2){
for(var i=groupPos+2;i<fields.length;i++){
jo[frozenFields[i]] = '';//清空后续的列的值
}
}
return jo;
}
function renderRowExt(that,rowData,isSumRow){
var innerTable= [];
var css = opts.rowStyler ? opts.rowStyler.call(target, that.currentIndex, rowData) : '';
var classValue = '';
var styleValue = '';
if (typeof css == 'string'){
styleValue = css;
} else if (css){
classValue = css['class'] || '';
styleValue = css['style'] || '';
}
if(isSumRow && isSumRow == true){
//TODO 临时
classValue = 'row-sum'
}
var cls = 'class="datagrid-row ' + (that.currentIndex % 2 && opts.striped ? 'datagrid-row-alt ' : ' ') + classValue + '"';
var style = styleValue ? 'style="' + styleValue + '"' : '';
var rowId = state.rowIdPrefix + '-' + (frozen?1:2) + '-' + that.currentIndex;
innerTable.push('<tr id="' + rowId + '" datagrid-row-index="' + that.currentIndex + '" ' + cls + ' ' + style + '>');
innerTable.push(that.renderRow.call(this, target, fields, frozen, that.currentIndex, rowData));
innerTable.push('</tr>');
return innerTable.join('');
}
/*
function getSumTitle(groupIndexArray,thisPath){
var title = '';
var index = -1;
for(var i=0;i<groupIndexArray.length;i++){
if(thisPath == groupIndexArray[i]){
index = i-1;
break;
}
}
if(index>=0){
title = groupIndexArray[index];
}
return title + '小计';
}*/
},
/*
bindEvents: function(target){
var state = $.data(target, 'datagrid');
var dc = state.dc;
var body = dc.body1.add(dc.body2);
var clickHandler = ($.data(body[0],'events')||$._data(body[0],'events')).click[0].handler;
body.unbind('click').bind('click', function(e){
var tt = $(e.target);
var expander = tt.closest('span.datagrid-row-expander');
if (expander.length){
var gindex = expander.closest('div.datagrid-group').attr('group-index');
if (expander.hasClass('datagrid-row-collapse')){
$(target).datagrid('collapseGroup', gindex);
} else {
$(target).datagrid('expandGroup', gindex);
}
} else {
clickHandler(e);
}
e.stopPropagation();
});
},*/
//渲染前的事件
onBeforeRender: function(target, rows){
var state = $.data(target, 'datagrid');
var opts = state.options;
var groupFields = opts.groupField;//分组字段
if(typeof groupFields == 'string'){
groupFields = groupFields.split(',');
}
var groups = {};//分组信息
var groupOrder = [];//分组顺序
initCss();
groupRows(rows,groupFields);
//state.data.rows = newRows;
this.groups = groups;
this.groupOrder = groupOrder;
this.newRows = [];//新数据
/*
var that = this;
setTimeout(function(){
that.bindEvents(target);
},0);*/
function groupRows(rows,groupFields){
var groupOrderStr = [];
for(var i=0; i<rows.length; i++){
var row = rows[i];
var oldVal = groups;
var path = [];
for(var j=0; j<groupFields.length; j++){
path.push(row[groupFields[j]]);
if(!oldVal[row[groupFields[j]]]){
if(j == groupFields.length-1){
oldVal[row[groupFields[j]]] = [];
}else{
oldVal[row[groupFields[j]]] = {};
}
}
oldVal = oldVal[row[groupFields[j]]];
}
oldVal.push(row);
var pathStr = path.join('&#');
if($.inArray(pathStr,groupOrderStr) == -1){
groupOrder.push(path);
groupOrderStr.push(pathStr);
}
}
}
function initCss(){
if (!$('#datagrid-group-style').length){
$('head').append(
'<style id="datagrid-group-style">' +
'.row-sum{/*background-color:#34d7d9 !important;*/ font-weight:700;}'+
'.datagrid-td-rownumber{font-weight:400;}'+
'</style>'
);
}
}
},
onAfterRender: function(target){
$.fn.datagrid.defaults.view.onAfterRender.call(this, target);
//合并单元格;
//$(target).datagrid('autoMergeCells', ['company','brand']);
}
});