/*
Product Name: dhtmlxSuite 
Version: 5.2.0 
Edition: Professional 
License: content of this file is covered by DHTMLX Commercial or Enterprise license. Usage without proper license is prohibited. To obtain it contact sales@dhtmlx.com
Copyright UAB Dinamenta http://www.dhtmlx.com
*/

dhtmlXGridObject.prototype.unGroup=function(){ 
	if (!this._groups) return;
	this._dndProblematic=false;
	
	delete this._groups;
	delete this._gIndex;	
	if (this._fake)	this._mirror_rowsCol();
	this.forEachRow(function(id){
		this.rowsAr[id].style.display='';
	})
	this._reset_view();
	this.callEvent("onGridReconstructed",[])
	this.callEvent("onUnGroup",[]);
}

dhtmlXGridObject.prototype._mirror_rowsCol=function(){ 
	this._fake._groups=this._groups;
	this._fake._gIndex=this._gIndex;
	this.rowsBuffer=dhtmlxArray(); 
	for (var i=0; i<this.rowsCol.length; i++)
		if (!this.rowsCol[i]._cntr)
			this.rowsBuffer.push(this.rowsCol[i]);
	this._fake.rowsBuffer=dhtmlxArray(); 
	for (var i=0; i<this._fake.rowsCol.length; i++)
		if (!this._fake.rowsCol[i]._cntr)
			this._fake.rowsBuffer.push(this._fake.rowsCol[i]);
}
/**
*	@desc: group grid content by values of specified column
*	@param: ind - column index to group by
*	@edition: Professional
*	@type: public
*/
dhtmlXGridObject.prototype.groupBy=function(ind,mask){
		
	if (this._groups) this.unGroup();
	this._dndProblematic=true;
	this._groups={};
	if (!mask) {
		mask=["#title"];
		for (var i=1; i<this._cCount; i++) mask.push("#cspan");
	}
	this._gmask=document.createElement("TR");
	this._gmask.origin = mask;
	var ltd,rindex=0;
	for (var i=0; i<mask.length; i++){
		if (mask[i]=="#cspan") 
			ltd.colSpan=(parseInt(ltd.colSpan)||1)+1
		else {
			ltd=document.createElement("TD");
			ltd._cellIndex=i;
			if (this._hrrar[i]) ltd.style.display="none";
			ltd.className="group_row";
			ltd.innerHTML="&nbsp;";
			if (mask[i]=="#title") this._gmask._title=rindex;
			else ltd.align=this.cellAlign[i]||"left";
			this._gmask.appendChild(ltd);
			if (mask[i].indexOf("#stat")==0){
				this._gmask._math=true;
				ltd._counter=[this["_g_"+mask[i].replace("#","")],i,rindex];
			}
			rindex++;
		}
	}
	for (var a in this._groups) this._groups[a]=this.undefined;
	this._gIndex=ind;
	
	if (this._fake &&!this._realfake){
		this._fake._groups=[];
		this._fake._gIndex=this._gIndex;
	}
	
	//keyboard commands
	this._nextRow=function(ind,dir){
		var r=this.rowsCol[ind+dir];
		if (r && ( r.style.display=="none" || r._cntr)) return this._nextRow(ind+dir,dir);
		return r;	
	}
	
	if (!this.__sortRowsBG){
		this._key_events=dhtmlx.extend({},this._key_events)
		this._key_events.k38_0_0=function(){
			if (this.editor && this.editor.combo)
				this.editor.shiftPrev();
			else{
				var rowInd = this.row.rowIndex;
				if (!rowInd) return;
				var nrow=this._nextRow(rowInd-1,-1);
				if (nrow)
	        		this.selectCell(nrow,this.cell._cellIndex,true);
			}
		}
		this._key_events.k13_1_0=this._key_events.k13_0_1=function(){};
	this._key_events.k40_0_0=function(){
		if (this.editor && this.editor.combo)
			this.editor.shiftNext();
		else{
			var rowInd = this.row.rowIndex;
			if (!rowInd) return;
			var nrow=this._nextRow(rowInd-1,1);
			if (nrow)
        		this.selectCell(nrow,this.cell._cellIndex,true);
		}
	}	
	
		this.attachEvent("onFilterStart",function(){
			if (this._groups) this._groups=this.undefined;
			return true;
		});
		this.attachEvent("onFilterEnd",function(){
			if (typeof this._gIndex != "undefined") this.groupBy(this._gIndex,this._gmask.origin);
		});
		this.sortRows_bg=this.sortRows;
		this.sortRows=function(ind,type,dir){
			if (typeof(this._groups)=="undefined") 
				return this.sortRows_bg.apply(this,arguments);

			type = type || this.fldSort[ind] || "str";
			dir = dir || "asc";
			if (this.callEvent("onBeforeSorting",[ind, type, dir])){
				if (typeof(this._groups)=="undefined") return true;
				if (ind==this._gIndex) this._sortByGroup(ind,type,dir);
				else this._sortInGroup(ind,type,dir);
				this.setSortImgState(true,ind,dir)
				if (this._fake){ 
					this._mirror_rowsCol();
					this._fake._groups=[];
					this._fake._reset_view();
				}
				this.setSortImgState(true,ind,dir);
				this.callEvent("onAfterSorting",[ind,type,dir]);
			}
			return false;
		};
		this.attachEvent("onClearAll",function(){ this.unGroup(); });
		this.attachEvent("onBeforeRowDeleted",function(id){ 
			if (!this._groups) return true;
			if (!this.rowsAr[id]) return true;
			var val=this.cells(id,this._gIndex).getValue();
			if (val==="") val=" ";
			var z=this._groups[val];
			this._dec_group(z);
			return true;
			});
		this.attachEvent("onAfterRowDeleted",function(id){ 
			this.updateGroups();
			});			
		this.attachEvent("onCheckbox",function(id,index,value){
			this.callEvent("onEditCell",[2,id,index,(value?1:0),(value?0:1)]);
		});
		this.attachEvent("onXLE",this.updateGroups);
		this.attachEvent("onColumnHidden",this.hideGroupColumn);
		this.attachEvent("onEditCell",function(stage,id,ind,val,oldval){
			if (!this._groups) return true;
			if (stage==2 && val!=oldval && ind==this._gIndex){
				if (oldval==="") oldval=" ";
				this._dec_group(this._groups[oldval]);
				var r=this.rowsAr[id];
				var i=this.rowsCol._dhx_find(r)
				var ni=this._inc_group(val);
				var n=this.rowsCol[ni];
				if (r==n) n=n.nextSibling;
					
				
				var p=r.parentNode;
				var o=r.rowIndex;
				
				p.removeChild(r);
				if (n)
					p.insertBefore(r,n);
				else
					p.appendChild(r);
				this.rowsCol._dhx_insertAt(ni,r);
				if (ni<i) i++;
				this.rowsCol._dhx_removeAt(i,r);
				this._fixAlterCss();
			} else if (stage==2 && val!=oldval) {
				this.updateGroups();
				this._updateGroupView(this._groups[this.cells(id,this._gIndex).getValue()||" "]);
				}
			return true;
			})
		this.__sortRowsBG=true;
	}
	
	
	this._groupExisting();	
	if (this._hrrar)
		for (var i=0; i<this._hrrar.length; i++)
			if (this._hrrar[i])
				this.hideGroupColumn(i,true);
	this.callEvent("onGroup",[]);
	if (this._ahgr || this._awdth) this.setSizes();
}
dhtmlXGridObject.prototype._sortInGroup=function(col,type,order){
	var b=this._groups_get();
	b.reverse();

	for (var i=0; i<b.length; i++){
		var c=b[i]._cntr._childs; var a={};
		for (var j=0; j<c.length; j++){
			var cell = this.cells3(c[j],col);
			a[c[j].idd]=cell.getDate?cell.getDate():cell.getValue();
		}
			
		this._sortCore(col,type,order,a,c);
	}
	//add|delete|edit|ungroup
	this._groups_put(b);
	this.setSizes();
	this.callEvent("onGridReconstructed",[])
}

dhtmlXGridObject.prototype._sortByGroup=function(col,type,order){ 
	var b=this._groups_get();
	var a=[];
	for (var i=0; i<b.length; i++){
		b[i].idd="_sort_"+i;
		a["_sort_"+i]=b[i]._cntr.text;
	}
		
	this._sortCore(col,type,order,a,b);
	//add|delete|edit|ungroup
	this._groups_put(b);
	this.callEvent("onGridReconstructed",[])
	this.setSizes();
}
dhtmlXGridObject.prototype._inc_group=function(val,hidden,skip){
	if (val==="") val=" ";
	if (!this._groups[val]){ 
		this._groups[val]={text:val,row:this._addPseudoRow(),count:0,state:hidden?"plus":"minus"}; }
	var z=this._groups[val];
	//this._fixAlterCss();
	z.row._cntr=z;
		
	 
	var ind=this.rowsCol._dhx_find(z.row)+z.count+1;
	z.count++;
	
	if (!skip) {
	this._updateGroupView(z);
		this.updateGroups();
	}
	return ind;
}
dhtmlXGridObject.prototype._dec_group=function(z){
	if (!z) return;
	z.count--;
	if (z.count==0){
		z.row.parentNode.removeChild(z.row);
		this.rowsCol._dhx_removeAt(this.rowsCol._dhx_find(z.row));
		delete this._groups[z.text];
	}
	else
		this._updateGroupView(z);
	if (this._fake && !this._realfake)
		this._fake._dec_group(this._fake._groups[z.text]);
	this.updateGroups();
	return true;	
	}
dhtmlXGridObject.prototype._insertRowAt_gA=dhtmlXGridObject.prototype._insertRowAt;
dhtmlXGridObject.prototype._insertRowAt=function(r,ind,skip){
	if (typeof(this._groups)!="undefined"){
		if (this._realfake)
			var val=this._fake._bfs_cells(r.idd,this._gIndex).getValue();
		else
			if (this._bfs_cells3)
				var val=this._bfs_cells3(r,this._gIndex).getValue();
			else
				var val=this.cells3(r,this._gIndex).getValue();
			if (!val) val=" ";
			ind=this._inc_group(val,r.style.display=="none");		
	}
	var res=this._insertRowAt_gA(r,ind,skip);
	if (typeof(this._groups)!="undefined"){	
		this.expandGroup(val);
		this._updateGroupView(this._groups[val]);
		this.updateGroups();
	}
	return res;
}

dhtmlXGridObject.prototype._updateGroupView=function(z){ 
	if (this._fake && !this._realfake) return z.row.firstChild.innerHTML="&nbsp;";
	var mask = this._gmask||this._fake._gmask;
	var html="<img style='margin-bottom:-4px' src='"+this.imgURL+z.state+".gif'> ";
	if (this.customGroupFormat) html+=this.customGroupFormat(z.text,z.count);
	else html+=z.text+" ( "+z.count+" ) ";
	z.row.childNodes[mask._title].innerHTML=html;
}
dhtmlXGridObject.prototype._addPseudoRow=function(skip){
	
	var mask = this._gmask||this._fake._gmask;
	var r=mask.cloneNode(true)
	//cloneNode ignores custom attributes
	for (var i=0; i<r.childNodes.length; i++) {
		r.childNodes[i]._cellIndex=mask.childNodes[i]._cellIndex;
		if (this._realfake) r.childNodes[i].style.display="";
	}
	var that=this;
	
	r.onclick=function(e){ 
		if (!that.callEvent("onGroupClick",[this._cntr.text]))
			return;

		if (that._fake && that._realfake) 
			that._fake._switchGroupState(that._fake._groups[this._cntr.text].row); 
		else
			that._switchGroupState(this);
		(e||event).cancelBubble="true"; }
	r.ondblclick=function(e){ (e||event).cancelBubble="true"; }
	
	if (!skip){
		if (_isKHTML)
			this.obj.appendChild(r)
		else
			this.obj.firstChild.appendChild(r)
		this.rowsCol.push(r);
	}
	return r;
}

dhtmlXGridObject.prototype._groups_get=function(){
	var b=[];
	this._temp_par=this.obj.parentNode;
	this._temp_par.removeChild(this.obj);
	var a=[];
	for (var i=this.rowsCol.length-1; i>=0; i--){
		if (this.rowsCol[i]._cntr){
			this.rowsCol[i]._cntr._childs=a;
			a=[];
			b.push(this.rowsCol[i]);
		} else a.push(this.rowsCol[i]);
		this.rowsCol[i].parentNode.removeChild(this.rowsCol[i]);
	}
  return b;
}

dhtmlXGridObject.prototype._groups_put=function(b){ 
	var sts = this.rowsCol.stablesort;
	this.rowsCol=new dhtmlxArray(0);
	this.rowsCol.stablesort = sts;
	
	for (var i=0; i<b.length; i++){
		var gr=b[i]._cntr;
		this.obj.firstChild.appendChild(gr.row);
		this.rowsCol.push(gr.row)
		gr.row.idd=null;
		for (var j=0; j<gr._childs.length; j++){
			this.obj.firstChild.appendChild(gr._childs[j]);
			this.rowsCol.push(gr._childs[j])
		}
		delete gr._childs;
	}
	this._temp_par.appendChild(this.obj);
}
dhtmlXGridObject.prototype._groupExisting=function(b){ 
	if (!this.getRowsNum()) return;
	var b=[];
	this._temp_par=this.obj.parentNode;
	this._temp_par.removeChild(this.obj);
	var a=[];
	
	var mlen=this.rowsCol.length;
	for (var i=0; i<mlen; i++){
		var val=this.cells4(this.rowsCol[i].childNodes[this._gIndex]).getValue();
		this.rowsCol[i].style.display = "";
		if (!val) val=" ";
		
		if (!this._groups[val]){
			this._groups[val]={text:val,row:this._addPseudoRow(true),count:0,state:"minus"};
			var z=this._groups[val];
			z.row._cntr=z;
			this._groups[val]._childs=[];
			b.push(z.row)
		}
		
		this._groups[val].count++;
		this._groups[val]._childs.push(this.rowsCol[i]);
		this.rowsCol[i].parentNode.removeChild(this.rowsCol[i]);
	}
  for (var i=0; i<b.length; i++)
 	this._updateGroupView(b[i]._cntr)
  this._groups_put(b);
  if (this._fake && !this._realfake) {
  	this._mirror_rowsCol();
  	this._fake._groups=[];
  	this._fake._reset_view();
  }
  this.callEvent("onGridReconstructed",[])
  this.updateGroups();
}

dhtmlXGridObject.prototype._switchGroupState=function(row){
	var z=row._cntr;
	if (this._fake && !this._realfake) {
		z.state=this._fake._groups[row._cntr.text].row._cntr.state;
		this._fake._switchGroupState(this._fake._groups[row._cntr.text].row)
	}
	
	var ind=this.rowsCol._dhx_find(z.row)+1;
	z.state=z.state=="minus"?"plus":"minus";
	var st=z.state=="plus"?"none":"";
	
	while(this.rowsCol[ind] && !this.rowsCol[ind]._cntr){
		this.rowsCol[ind].style.display=st;
		ind++;
	}

	this._updateGroupView(z);
	this.callEvent("onGroupStateChanged",[z.text, (z.state=="minus")]);
	this.setSizes();
}
/**
*	@desc: expand group of rows
*	@param: val - value to use to determine what group to expand (in other words this should be value common for all of them)
*	@edition: Professional
*	@type: public
*/
dhtmlXGridObject.prototype.expandGroup=function(val){
	if (this._groups[val].state=="plus")
		this._switchGroupState(this._groups[val].row);
}
/**
*	@desc: collapse group of rows
*	@param: val - value to use to determine what group to collapse (in other words this should be value common for all of them)
*	@edition: Professional
*	@type: public
*/
dhtmlXGridObject.prototype.collapseGroup=function(val){
	if (this._groups[val].state=="minus")
		this._switchGroupState(this._groups[val].row);
}
/**
*	@desc: expand all groups
*	@edition: Professional
*	@type: public
*/
dhtmlXGridObject.prototype.expandAllGroups=function(){
	for(var i in this._groups)
		if (this._groups[i] && this._groups[i].state=="plus")
			this._switchGroupState(this._groups[i].row);
}
/**
*	@desc: collapse all groups
*	@edition: Professional
*	@type: public
*/
dhtmlXGridObject.prototype.collapseAllGroups=function(){
	for(var i in this._groups)
		if (this._groups[i] && this._groups[i].state=="minus")
			this._switchGroupState(this._groups[i].row);
}

dhtmlXGridObject.prototype.hideGroupColumn=function(ind,state){
	if (this._fake) return;
	var rind=-1;
	var row = this._gmask.childNodes;
	for (var i=0; i<row.length; i++)
		if (row[i]._cellIndex==ind) {
			rind = i;
			break;
	}
	if (rind == -1) return;
	for (var a in this._groups)
		this._groups[a].row.childNodes[rind].style.display=state?"none":"";
};
dhtmlXGridObject.prototype.groupStat=function(name,ind,math){
	math = this["_g_"+(math||"stat_total")];
	var summ=0; var index=0;
	this.forEachRowInGroup(name,function(id){
		summ=math(summ,this.cells(id,ind).getValue()*1,index)
		index++;
	})
	return summ;
}
dhtmlXGridObject.prototype.forEachRowInGroup=function(name,code){
	var row=this._groups[name].row.nextSibling;
	if (row){
		while (row && !row._cntr) {
			code.call(this,row.idd);
			row=row.nextSibling;
		}
	} else {
		var cs=this._groups[name]._childs;
		if (cs)
			for (var i=0; i<cs.length; i++)
				code.call(this,cs[i].idd);
	}
};
dhtmlXGridObject.prototype.updateGroups=function(){
	if (!this._gmask || !this._gmask._math || this._parsing) return;
	var r=this._gmask.childNodes;
	for (var i=0; i<r.length; i++)
		if (r[i]._counter) this._b_processing.apply(this,r[i]._counter)
}
dhtmlXGridObject.prototype._b_processing=function(a,ind,rind){
	var c=0,j=0; 
	//put editor in cache, so it can be used for custom html containers - can be moved in cells5(?)
	if (!this._ecache[this.cellType[ind]]) this.cells5({parentNode:{grid:this}},this.cellType[ind]);
	for (var i=this.rowsCol.length-1; i>=0; i--){
		if (!this.rowsCol[i]._cntr){
			c=a(c,this.cells3(this.rowsCol[i],ind).getValue()*1,j);
			j++;
		} else {
			this.cells5(this.rowsCol[i].childNodes[rind],this.cellType[ind]).setValue(c);
			j=c=0;
		}
	}
}

dhtmlXGridObject.prototype._g_stat_total=function(c,n,i){
	return c+n;
}
dhtmlXGridObject.prototype._g_stat_min=function(c,n,i){
	if (!i) c=Infinity;
	return Math.min(c,n);
}
dhtmlXGridObject.prototype._g_stat_max=function(c,n,i){
	if (!i) c=-Infinity;
	return Math.max(c,n);
}
dhtmlXGridObject.prototype._g_stat_average=function(c,n,i){
	return (c*i+n)/(i+1);
}
dhtmlXGridObject.prototype._g_stat_count=function(c,n,i){
	return ++c;
}
	
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