/*
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
*/

/**
*  @desc: enable smart paging mode
*  @type: public
*  @param: fl - true|false - enable|disable mode
*  @param: pageSize - count of rows per page
*  @param: pagesInGrp - count of visible page selectors
*  @param: parentObj - ID or container which will be used for showing paging controls
*  @param: showRecInfo - true|false - enable|disable showing of additional info about paging state
*  @param: recInfoParentObj - ID or container which will be used for showing paging state
*  @edition: Professional
*  @topic: 0
*/
dhtmlXGridObject.prototype.enablePaging = function(fl,pageSize,pagesInGrp,parentObj,showRecInfo,recInfoParentObj){
	this._pgn_parentObj = typeof(parentObj)=="string" ? document.getElementById(parentObj) : parentObj;
	this._pgn_recInfoParentObj = typeof(recInfoParentObj)=="string" ? document.getElementById(recInfoParentObj) : recInfoParentObj;
	
	this.pagingOn = fl;
	this.showRecInfo = showRecInfo;
	this.rowsBufferOutSize = parseInt(pageSize);
	this.currentPage = 1;
	this.pagesInGroup = parseInt(pagesInGrp);
	this._init_pgn_events()
	this.setPagingSkin("default");
}
/**
*  @desc: allow to configure settings of dynamical paging
*  @type: public
*  @param: filePath - path which will be used for requesting data ( parth from load command used by default )
*  @param: buffer -  count of rows requrested from server by single operation, optional
*  @edition: Professional
*  @topic: 0
*/
dhtmlXGridObject.prototype.setXMLAutoLoading = function(filePath,bufferSize){
	this.xmlFileUrl = filePath;
	this._dpref = bufferSize;
}
/**
*  @desc: change current page in grid
*  @type: public
*  @param: ind - correction ( -1,1,2  etc) to current active page
*  @edition: Professional
*  @topic: 0
*/
dhtmlXGridObject.prototype.changePageRelative = function(ind){ 
	this.changePage(this.currentPage+ind);
}
/**
*  @desc: change current page in grid
*  @type: public
*  @param: pageNum -  new active page
*  @edition: Professional
*  @topic: 0
*/
dhtmlXGridObject.prototype.changePage = function(pageNum){ 
	if (arguments.length==0) pageNum=this.currentPage||0;
	pageNum=parseInt(pageNum);
	pageNum=Math.max(1,Math.min(pageNum,Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize)));
	
	if(!this.callEvent("onBeforePageChanged",[this.currentPage,pageNum]))
		return;
	
	this.currentPage = parseInt(pageNum);
	this._reset_view();
	this._fixAlterCss();			
	this.callEvent("onPageChanged",this.getStateOfView());
}
/**
*  @desc: allows to set custom paging skin
*  @param: name - skin name (default,toolbar,bricks)
*  @type:  public
*/
dhtmlXGridObject.prototype.setPagingSkin = function(name){
	this._pgn_skin=this["_pgn_"+name];
	if (name=="toolbar") this._pgn_skin_tlb=arguments[1];
}
/**
*  @desc: allows to set paging templates for default skin
*  @param: a - template for zone A
*  @param: b - template for zone B
*  @type:  public
*/
dhtmlXGridObject.prototype.setPagingTemplates = function(a,b){
	this._pgn_templateA=this._pgn_template_compile(a);
	this._pgn_templateB=this._pgn_template_compile(b);
	this._page_skin_update();
}
dhtmlXGridObject.prototype._page_skin_update = function(name){
	if (!this.pagesInGroup) this.pagesInGroup=Math.ceil(Math.min(5,this.rowsBuffer.length/this.rowsBufferOutSize));
	var totalPages=Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize);
	if (totalPages && totalPages<this.currentPage)
		return this.changePage(totalPages);
	if (this.pagingOn && this._pgn_skin) this._pgn_skin.apply(this,this.getStateOfView());
}
dhtmlXGridObject.prototype._init_pgn_events = function(name){
	this.attachEvent("onXLE",this._page_skin_update)
	this.attachEvent("onClearAll",this._page_skin_update)
	this.attachEvent("onPageChanged",this._page_skin_update)
	this.attachEvent("onGridReconstructed",this._page_skin_update)
	
	this._init_pgn_events=function(){};
}

// default paging
dhtmlXGridObject.prototype._pgn_default=function(page,start,end){
	if (!this.pagingBlock){
		this.pagingBlock = document.createElement("DIV");
		this.pagingBlock.className = "pagingBlock";
		this.recordInfoBlock = document.createElement("SPAN");
		this.recordInfoBlock.className = "recordsInfoBlock";
		if (!this._pgn_parentObj) return;
		this._pgn_parentObj.appendChild(this.pagingBlock)
		if(this._pgn_recInfoParentObj && this.showRecInfo)
			this._pgn_recInfoParentObj.appendChild(this.recordInfoBlock)
		
		//this._pgn_template="{prev:} {current:-1},{current},{current:+1} {next:>}"
		if (!this._pgn_templateA){
			this._pgn_templateA=this._pgn_template_compile("[prevpages:&lt;:&nbsp;] [currentpages:,&nbsp;] [nextpages:&gt;:&nbsp;]");
			this._pgn_templateB=this._pgn_template_compile("Results <b>[from]-[to]</b> of <b>[total]</b>");
		}
	}
	
	var details=this.getStateOfView();
	this.pagingBlock.innerHTML = this._pgn_templateA.apply(this,details);
	this.recordInfoBlock.innerHTML = this._pgn_templateB.apply(this,details);
	this._pgn_template_active(this.pagingBlock);
	this._pgn_template_active(this.recordInfoBlock);
	
	this.callEvent("onPaging",[]);
}

dhtmlXGridObject.prototype._pgn_block=function(sep){ 
	var start=Math.floor((this.currentPage-1)/this.pagesInGroup)*this.pagesInGroup;
	var max=Math.min(Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize),start+this.pagesInGroup);
	var str=[];
	for (var i=start+1; i<=max; i++)
		if (i==this.currentPage)
		str.push("<a class='dhx_not_active'><b>"+i+"</b></a>");
	else
		str.push("<a onclick='this.grid.changePage("+i+"); return false;'>"+i+"</a>");
	return str.join(sep);
}
dhtmlXGridObject.prototype._pgn_link=function(mode,ac,ds){
	if (mode=="prevpages" || mode=="prev"){
		if (this.currentPage==1) return ds;
		return '<a onclick=\'this.grid.changePageRelative(-1*'+(mode=="prev"?'1':'this.grid.pagesInGroup')+'); return false;\'>'+ac+'</a>'
	}
	
	if (mode=="nextpages" || mode=="next"){
		if (this.rowsBuffer.length/this.rowsBufferOutSize <= this.currentPage ) return ds;
		if (this.rowsBuffer.length/(this.rowsBufferOutSize*(mode=="next"?'1':this.pagesInGroup)) <= 1 ) return ds;
		return '<a onclick=\'this.grid.changePageRelative('+(mode=="next"?'1':'this.grid.pagesInGroup')+'); return false;\'>'+ac+'</a>'
	}
	
	if (mode=="current"){
		var i=this.currentPage+(ac?parseInt(ac):0);
		if (i<1 || Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize) < i ) return ds;
		return '<a '+(i==this.currentPage?"class='dhx_active_page_link' ":"")+'onclick=\'this.grid.changePage('+i+'); return false;\'>'+i+'</a>'
	}
	return ac;
}

dhtmlXGridObject.prototype._pgn_template_active=function(block){
	var tags=block.getElementsByTagName("A");
	if (tags)
	for (var i=0; i < tags.length; i++) {
		tags[i].grid=this;
	};
}
dhtmlXGridObject.prototype._pgn_template_compile=function(template){
	/*
	[prev],[next]
	[currentpages]
	[from],[to],[total]
	*/
	template=template.replace(/\[([^\]]*)\]/g,function(a,b){
			b=b.split(":");
			switch (b[0]){
			case "from": 
				return '"+(arguments[1]*1+(arguments[2]*1?1:0))+"';
			case "total":
				return '"+arguments[3]+"';
			case "to":
				return '"+arguments[2]+"';
			case "current":
			case "prev":
			case "next":
			case "prevpages":
			case "nextpages":
				return '"+this._pgn_link(\''+b[0]+'\',\''+b[1]+'\',\''+b[2]+'\')+"'
			case "currentpages":
				return '"+this._pgn_block(\''+b[1]+'\')+"'
			}
			//do it here
	})
	return new Function('return "'+template+'";')
}

dhtmlXGridObject.prototype.i18n.paging={
	results:"Results",
	records:"Records from ",
	to:" to ",
	page:"Page ",
	perpage:"rows per page",
	first:"To first Page",
	previous:"Previous Page",
	found:"Found records",
	next:"Next Page",
	last:"To last Page",
	of:" of ",
	notfound:"No Records Found"
}
/**
*  @desc: configure paging with toolbar mode ( must be called BEFORE enablePaging)
*  @param: navButtons - enable/disable navigation buttons
*  @param: navLabel - enable/disable navigation label
*  @param: pageSelect - enable/disable page selector
*  @param: perPageSelect - an array of "per page" select options ([5,10,15,20,25,30] by default)
*  @type: public
*  @edition: Professional
*/
dhtmlXGridObject.prototype.setPagingWTMode = function(navButtons,navLabel,pageSelect,perPageSelect){
	this._WTDef=[navButtons,navLabel,pageSelect,perPageSelect];
}
/**
*  @desc: Bricks skin for paging
*/
dhtmlXGridObject.prototype._pgn_bricks = function(page, start, end){
	//set class names depending on grid skin
	var tmp = (this.skin_name||"").split("_")[1];
	var sfx="";
	if(tmp=="light" || tmp=="modern" || tmp=="skyblue")
		sfx = "_"+tmp;
	
	this.pagerElAr = new Array();
	this.pagerElAr["pagerCont"] = document.createElement("DIV");
	this.pagerElAr["pagerBord"] = document.createElement("DIV");
	this.pagerElAr["pagerLine"] = document.createElement("DIV");
	this.pagerElAr["pagerBox"] = document.createElement("DIV");
	this.pagerElAr["pagerInfo"] = document.createElement("DIV");
	this.pagerElAr["pagerInfoBox"] = document.createElement("DIV");
	var se = (this.globalBox||this.objBox);
	this.pagerElAr["pagerCont"].style.width = se.clientWidth+"px";
	this.pagerElAr["pagerCont"].style.overflow = "hidden";
	this.pagerElAr["pagerCont"].style.clear = "both";
	this.pagerElAr["pagerBord"].className = "dhx_pbox"+sfx;
	this.pagerElAr["pagerLine"].className = "dhx_pline"+sfx;
	this.pagerElAr["pagerBox"].style.clear = "both";
	this.pagerElAr["pagerInfo"].className = "dhx_pager_info"+sfx;
	
	//create structure
	this.pagerElAr["pagerCont"].appendChild(this.pagerElAr["pagerBord"]);
	this.pagerElAr["pagerCont"].appendChild(this.pagerElAr["pagerLine"]);
	this.pagerElAr["pagerCont"].appendChild(this.pagerElAr["pagerInfo"]);
	this.pagerElAr["pagerLine"].appendChild(this.pagerElAr["pagerBox"]);
	this.pagerElAr["pagerInfo"].appendChild(this.pagerElAr["pagerInfoBox"]);
	this._pgn_parentObj.innerHTML = "";
	this._pgn_parentObj.appendChild(this.pagerElAr["pagerCont"]);
	
	
	
	
	if(this.rowsBuffer.length>0){
		var lineWidth = 20;
		var lineWidthInc = 22;
		
		//create left arrow if needed
		if(page>this.pagesInGroup){
			var pageCont = document.createElement("DIV");
			var pageBox = document.createElement("DIV");
			pageCont.className = "dhx_page"+sfx;
			pageBox.innerHTML = "&larr;";
			pageCont.appendChild(pageBox);
			this.pagerElAr["pagerBox"].appendChild(pageCont);
			var self = this;
			pageCont.pgnum = (Math.ceil(page/this.pagesInGroup)-1)*this.pagesInGroup;
			pageCont.onclick = function(){
				self.changePage(this.pgnum);
			}
			lineWidth +=lineWidthInc;
		}
		//create pages
		for(var i=1;i<=this.pagesInGroup;i++){
			var pageCont = document.createElement("DIV");
			var pageBox = document.createElement("DIV");
			pageCont.className = "dhx_page"+sfx;
			pageNumber = ((Math.ceil(page/this.pagesInGroup)-1)*this.pagesInGroup)+i;
			if(pageNumber>Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize))
				break;
			pageBox.innerHTML = pageNumber;
			pageCont.appendChild(pageBox);
			if(page==pageNumber){
				pageCont.className += " dhx_page_active"+sfx;
				pageBox.className = "dhx_page_active"+sfx;
			}else{
				var self = this;
				pageCont.pgnum = pageNumber;
				pageCont.onclick = function(){
					self.changePage(this.pgnum);
				}
			}
			lineWidth +=(parseInt(lineWidthInc/3)*pageNumber.toString().length)+15;
			pageBox.style.width = (parseInt(lineWidthInc/3)*pageNumber.toString().length)+8+"px";
			this.pagerElAr["pagerBox"].appendChild(pageCont);
		}
		//create right arrow if needed
		if(Math.ceil(page/this.pagesInGroup)*this.pagesInGroup<Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize)){
			var pageCont = document.createElement("DIV");
			var pageBox = document.createElement("DIV");
			pageCont.className = "dhx_page"+sfx;
			pageBox.innerHTML = "&rarr;";
			pageCont.appendChild(pageBox);
			this.pagerElAr["pagerBox"].appendChild(pageCont);
			var self = this;
			pageCont.pgnum = (Math.ceil(page/this.pagesInGroup)*this.pagesInGroup)+1;
			pageCont.onclick = function(){
				self.changePage(this.pgnum);
			}
			lineWidth +=lineWidthInc;
		}
		
		this.pagerElAr["pagerLine"].style.width = lineWidth+"px";
	}
	
	//create page info
	if(this.rowsBuffer.length>0 && this.showRecInfo)
		this.pagerElAr["pagerInfoBox"].innerHTML = this.i18n.paging.records+(start+1)+this.i18n.paging.to+end+this.i18n.paging.of+this.rowsBuffer.length;
	else if(this.rowsBuffer.length==0){
		this.pagerElAr["pagerLine"].parentNode.removeChild(this.pagerElAr["pagerLine"]);
		this.pagerElAr["pagerInfoBox"].innerHTML = this.i18n.paging.notfound;
	}
	//add whitespaces where necessary
	this.pagerElAr["pagerBox"].appendChild(document.createElement("SPAN")).innerHTML = "&nbsp;";
	this.pagerElAr["pagerBord"].appendChild(document.createElement("SPAN")).innerHTML = "&nbsp;";
	this.pagerElAr["pagerCont"].appendChild(document.createElement("SPAN")).innerHTML = "&nbsp;";
	this.callEvent("onPaging",[]);			
}


/**
*  @desc: web toolbar skin for paging
*/
dhtmlXGridObject.prototype._pgn_toolbar = function(page, start, end){
	if (!this.aToolBar) this.aToolBar = this._pgn_createToolBar();
	var totalPages=Math.ceil(this.rowsBuffer.length/this.rowsBufferOutSize);
	
	if (this._WTDef[0]){
		this.aToolBar.enableItem("right");
		this.aToolBar.enableItem("rightabs");
		this.aToolBar.enableItem("left");
		this.aToolBar.enableItem("leftabs");
		if(this.currentPage>=totalPages){
			this.aToolBar.disableItem("right");
			this.aToolBar.disableItem("rightabs");
		}
		if(this.currentPage==1){
			this.aToolBar.disableItem("left");
			this.aToolBar.disableItem("leftabs");
		}
	}
	if (this._WTDef[2]){
		var that = this;
		this.aToolBar.forEachListOption("pages", function(id){
			that.aToolBar.removeListOption("pages", id);
		});
		var w = {dhx_skyblue: 4, dhx_web: 0, dhx_terrace: 14}[this.aToolBar.conf.skin];
		for (var i=0; i<totalPages; i++) {
			this.aToolBar.addListOption("pages", "pages_"+(i+1), NaN, "button", "<span style='padding: 0px "+w+"px 0px 0px;'>"+this.i18n.paging.page+(i+1)+"</span>", "paging_page.gif");
		}
		this.aToolBar.setItemText("pages", this.i18n.paging.page+page);
	}
	// pButton.setSelected(page.toString())
	
	
	if (this._WTDef[1]){
		if (!this.getRowsNum())
			this.aToolBar.setItemText('results',this.i18n.paging.notfound);
		else
			this.aToolBar.setItemText('results',"<div style='width:100%; text-align:center'>"+this.i18n.paging.records+(start+1)+this.i18n.paging.to+end+"</div>");
	}
	if (this._WTDef[3])
		this.aToolBar.setItemText("perpagenum", this.rowsBufferOutSize.toString()+" "+this.i18n.paging.perpage);
	
	this.callEvent("onPaging",[]);
}
dhtmlXGridObject.prototype._pgn_createToolBar = function(){
	this.aToolBar = new dhtmlXToolbarObject({
		parent: this._pgn_parentObj,
		skin: (this._pgn_skin_tlb||this.skin_name),
		icons_path: this.imgURL
	});
	if (!this._WTDef) this.setPagingWTMode(true, true, true, true);
	var self = this;
	this.aToolBar.attachEvent("onClick", function(val){
		val = val.split("_");
		switch (val[0]){
			case "leftabs":
				self.changePage(1);
				break;
			case "left":
				self.changePage(self.currentPage-1);
				break;
			case "rightabs":
				self.changePage(99999);
				break;
			case "right":
				self.changePage(self.currentPage+1);
				break;
			case "perpagenum":
				if (val[1]===this.undefined) return;
				self.rowsBufferOutSize = parseInt(val[1]);
				self.changePage();
				self.aToolBar.setItemText("perpagenum", val[1]+" "+self.i18n.paging.perpage);
				break;
			case "pages":
				if (val[1]===this.undefined) return;
				self.changePage(val[1]);
				self.aToolBar.setItemText("pages", self.i18n.paging.page+val[1]);
				break;
		}
	});
	// add buttons
	if (this._WTDef[0]) {
		this.aToolBar.addButton("leftabs", NaN, null, "ar_left_abs.gif", "ar_left_abs_dis.gif");
		this.aToolBar.addButton("left", NaN, null, "ar_left.gif", "ar_left_dis.gif");
	}
	if (this._WTDef[1]) {
		this.aToolBar.addText("results", NaN, this.i18n.paging.results);
		this.aToolBar.setWidth("results", "150");
		this.aToolBar.disableItem("results");
	}
	if (this._WTDef[0]) {
		this.aToolBar.addButton("right", NaN, null, "ar_right.gif", "ar_right_dis.gif");
		this.aToolBar.addButton("rightabs", NaN, null, "ar_right_abs.gif", "ar_right_abs_dis.gif");
	}
	if (this._WTDef[2]) {
		if (this.aToolBar.conf.skin == "dhx_terrace") this.aToolBar.addSeparator();
		this.aToolBar.addButtonSelect("pages", NaN, "select page", [], "paging_pages.gif", null, false, true);
	}
	var arr;
	if (arr = this._WTDef[3]) {
		if (this.aToolBar.conf.skin == "dhx_terrace") this.aToolBar.addSeparator();
		this.aToolBar.addButtonSelect("perpagenum", NaN, "select size", [], "paging_rows.gif", null, false, true);
		if (typeof arr != "object") arr = [5,10,15,20,25,30];
		var w = {dhx_skyblue: 4, dhx_web: 0, dhx_terrace: 18}[this.aToolBar.conf.skin];
		for (var k=0; k<arr.length; k++) {
			this.aToolBar.addListOption("perpagenum", "perpagenum_"+arr[k], NaN, "button", "<span style='padding: 0px "+w+"px 0px 0px;'>"+arr[k]+" "+this.i18n.paging.perpage+"</span>", "paging_page.gif");
		}
	}
	
	//var td = document.createElement("TD"); td.width = "5"; this.aToolBar.tr.appendChild(td);
	//var td = document.createElement("TD"); td.width = "100%"; this.aToolBar.tr.appendChild(td);
	
	return this.aToolBar;
}