Ext.grid.GridSummary=function(config){Ext.apply(this,config);};Ext.extend(Ext.grid.GridSummary,Ext.util.Observable,{init:function(grid){this.grid=grid;this.cm=grid.getColumnModel();this.view=grid.getView();this.beforeInsert=false;var v=this.view;this.doRenderBase=v.doRender;v.doRender=this.doRender.createDelegate(this);v.beforeMethod('insertRows',this.doBeforeInsert,this);v.afterMethod('onColumnWidthUpdated',this.doWidth,this);v.afterMethod('onAllColumnWidthsUpdated',this.doAllWidths,this);v.afterMethod('onColumnHiddenUpdated',this.doHidden,this);v.afterMethod('onUpdate',this.doUpdate,this);v.afterMethod('onRemove',this.doRemove,this);if(!this.rowTpl){this.rowTpl=new Ext.Template('<div class="x-grid3-summary-row" style="{tstyle}">','<table class="x-grid3-summary-table" border="0" cellspacing="0" cellpadding="0" style="{tstyle}">','<tbody><tr>{cells}</tr></tbody>','</table></div>');this.rowTpl.disableFormats=true;}
this.rowTpl.compile();if(!this.cellTpl){this.cellTpl=new Ext.Template('<td class="x-grid3-col x-grid3-cell x-grid3-td-{id} {css}" style="{style}">','<div class="x-grid3-cell-inner x-grid3-col-{id}" unselectable="on">{value}</div>',"</td>");this.cellTpl.disableFormats=true;}
this.cellTpl.compile();},toggleSummaries:function(visible){var el=this.grid.getGridEl();if(el){if(visible===undefined){visible=el.hasClass('x-grid-hide-summary');}
el[visible?'removeClass':'addClass']('x-grid-hide-summary');}},renderSummary:function(o,cs){cs=cs||this.view.getColumnData();var cfg=this.cm.config;var buf=[],c,p={},cf,last=cs.length-1;for(var i=0,len=cs.length;i<len;i++){c=cs[i];cf=cfg[i];p.id=c.id;p.style=c.style;p.css=i==0?'x-grid3-cell-first ':(i==last?'x-grid3-cell-last ':'');if(cf.summaryType||cf.summaryRenderer){p.value=(cf.summaryRenderer||c.renderer)(o.data[c.name],p,o);}else{p.value='';}
if(p.value==undefined||p.value==="")p.value=" ";buf[buf.length]=this.cellTpl.apply(p);}
return this.rowTpl.apply({tstyle:'width:'+this.view.getTotalWidth()+';',cells:buf.join('')});},calculate:function(rs,cs){var data={},r,c,cfg=this.cm.config,cf;for(var j=0,jlen=rs.length;j<jlen;j++){r=rs[j];for(var i=0,len=cs.length;i<len;i++){c=cs[i];cf=cfg[i];if(cf.summaryType){data[c.name]=Ext.grid.GridSummary.Calculations[cf.summaryType](data[c.name]||0,r,c.name,data);}}}
return data;},doRender:function(cs,rs,ds,startRow,colCount,stripe){var buf=this.doRenderBase.call(this.view,cs,rs,ds,startRow,colCount,stripe);if(!this.beforeInsert||this.view.getRows().length==0){var data=this.calculate(rs,cs);buf+=this.renderSummary({data:data},cs);}else{this.refreshSummary();}
this.beforeInsert=false;return buf;},doWidth:function(col,w,tw){var gs=this.view.getRows(),s;if(gs.length>0){s=gs[gs.length-1];s.style.width=tw;s.firstChild.style.width=tw;s.firstChild.rows[0].childNodes[col].style.width=w;}},doAllWidths:function(ws,tw){var gs=this.view.getRows(),s,cells,wlen=ws.length;if(gs.length>0){s=gs[gs.length-1];s.style.width=tw;s.firstChild.style.width=tw;cells=s.firstChild.rows[0].childNodes;for(var j=0;j<wlen;j++){cells[j].style.width=ws[j];}}},doHidden:function(col,hidden,tw){var gs=this.view.getRows(),s,display=hidden?'none':'';for(var i=0,len=gs.length;i<len;i++){s=gs[i].childNodes[2];s.style.width=tw;s.firstChild.style.width=tw;s.firstChild.rows[0].childNodes[col].style.display=display;}},getSummaryNode:function(){return this.view.el.child('.x-grid3-summary-row');},refreshSummary:function(){var rs=[];this.grid.store.each(function(r){rs[rs.length]=r;});var cs=this.view.getColumnData();var data=this.calculate(rs,cs);var markup=this.renderSummary({data:data},cs);var body=this.view.el.child('.x-grid3-body').dom;var existing=this.getSummaryNode();if(existing){body.removeChild(existing.dom);}
Ext.DomHelper.append(body,markup);return true;},removeSummary:function(){var existing=this.getSummaryNode();if(existing){var body=this.view.el.child('.x-grid3-body').dom;body.removeChild(existing.dom);}},doUpdate:function(ds,record){this.refreshSummary();},doRemove:function(ds,record,index,isUpdate){if(!isUpdate){if(ds.getCount()===0)this.removeSummary();else this.refreshSummary();}},doBeforeInsert:function(){this.beforeInsert=true;}});Ext.grid.GridSummary.Calculations={'sum':function(v,record,field){return v+(record.data[field]||0);},'count':function(v,record,field,data){return data[field+'count']?++data[field+'count']:(data[field+'count']=1);},'max':function(v,record,field,data){var v=record.data[field];var max=data[field+'max']===undefined?(data[field+'max']=v):data[field+'max'];return v>max?(data[field+'max']=v):max;},'min':function(v,record,field,data){var v=record.data[field];var min=data[field+'min']===undefined?(data[field+'min']=v):data[field+'min'];return v<min?(data[field+'min']=v):min;},'average':function(v,record,field,data){var c=data[field+'count']?++data[field+'count']:(data[field+'count']=1);var t=(data[field+'total']=((data[field+'total']||0)+(record.data[field]||0)));return t===0?0:t/c;}}