function format_data(value)
{
	if(data_type_field=='system_size'){
		rounded_number = Math.round(value*10)/10;
		return addCommas(rounded_number);
	} else if(data_type_field=='num_of_apps') {
		return addCommas(value);
	} else if(data_type_field=='incentive') {
		rounded_number = Math.round(value);
		return addCommas(rounded_number);
	} else {
		return addCommas(value);
	}
}

function format_percentage(value)
{
    return Math.round(value*10)/10;
}
function get_data_value_label(value) {
	if(data_type_field=='system_size') {
		return "MW";
	} else if(data_type_field=='num_of_apps') {
		return "# of Apps";
	} else if(data_type_field=='incentive') {
		return "Incentive";
	} else{
		return;
	}
}

function get_axis_label(value) {
	if(data_type_field=='system_size') {
		return "Megawatts";
	}
	else if(data_type_field=='num_of_apps') {
		return "Number of Applications";
	} else if(data_type_field=='incentive') {
		return "Incentive ($M)";
	} else{
		return;
	}
}

function get_data_percentage_label(value) {
	if(data_type_field=='system_size') {
		return "% MW";
	} else if(data_type_field=='num_of_apps') {
		return "% of Apps";
	} else if(data_type_field=='incentive') {
		return "% Incentive";
	} else{
		return;
	}
}

function on_resize() {
	 //draw_count is a hack for pie charts. To disable them to be able to open pies
	draw_count = 1;
	chart.redraw();
}

function hideLabels(labels) {
	for(var i=0;i<labels.length;i++) {
		labels[i].style.display = "none";
    }
}

function hideAllLabels() {
	 if(!labels || !labels[0]) return;
	 if(labels[0][0]) {
		  for (var labelIndex in labels) {
			 if(labelIndex!='indexOf') {
			   hideLabels(labels[labelIndex]);
			 }
		  }
	 } else {
		  for (i=0;i<labels.length;i++) {
			   labels[i].style.display = "none";
		  }
	 }
}


function addCommas(nStr) {
	nStr += '';
	x = nStr.split('.');
	x1 = x[0];
	x2 = x.length > 1 ? '.' + x[1] : '';
	var rgx = /(\d+)(\d{3})/;
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + ',' + '$2');
	}
	return x1 + x2;
}

function onNeedsTicks_dateGraph( min , max , chart ) {
		if( true ) {
			tickArr = [];
			
			//for(tickEvery=1;dateGraph_data_list.length/tickEvery>12;tickEvery++){}
			
			if(bins.length>0)
			{
    			for(var i=0;i<bins.length;i++) {
    				if(i%tickEvery==0) {
    					tickArr[tickArr.length] = [bins[i],null];
    				} else {
    					tickArr[tickArr.length] = [null];
    				}
    			}
    			return tickArr;
    	    }
    	    else
    	    {
    	       for(var i=0;i<dateGraph_data_list.length;i++) {
                    if(i%tickEvery==0) {
                        tickArr[tickArr.length] = [dateGraph_data_list[i][0],null];
                    } else {
                        tickArr[tickArr.length] = [null];
                    }
                }
                return tickArr
    	    
    	    }
	    } else {
			return null;
		}
}

var first_series_on = false;
var no_series = false;
function showDataSeries(changed_data_series,is_show) {
	 chart.clearSelectedPoint();
	 if (!enable_initialize_pusedo_bar_filtering) {
        if(is_show)
            changed_data_series.show();
        else
            changed_data_series.hide();
     }

	 if (pseudo_bar_all_data_series[0].getPoints()[0].start_y == undefined) {
		  populate_start_y(pseudo_bar_all_data_series);
	 }

	 changePoints = changed_data_series.getPoints();

	 for(seriesIndex=0;seriesIndex<pseudo_bar_all_data_series.length;seriesIndex++) {
		  comparisonPoints = pseudo_bar_all_data_series[seriesIndex].getPoints();

		  if (changed_data_series==pseudo_bar_all_data_series[seriesIndex]) {
			   is_changed_data_series = true;
		  } else {
			   is_changed_data_series = false;
		  }

		  for(dataIndex=0;dataIndex<comparisonPoints.length;dataIndex++) {

			   if (!is_changed_data_series && comparisonPoints[dataIndex].start_y>=changePoints[dataIndex].start_y) {
					if(is_show)
						 comparisonPoints[dataIndex].y = comparisonPoints[dataIndex].y + changePoints[dataIndex].userdata;
					else
						 comparisonPoints[dataIndex].y = comparisonPoints[dataIndex].y - changePoints[dataIndex].userdata;
			    }
		  }
	 }


	 if(is_show)
		  changed_data_series.show();
	 else
		  changed_data_series.hide();

	 set_extremes(pseudo_bar_all_data_series);
}


function set_extremes(data_series) {
	 highest_y = 0;
	 for(seriesIndex=0;seriesIndex<data_series.length;seriesIndex++) {
		  if(data_series[seriesIndex].getVisibility() ) {
			   points = data_series[seriesIndex].getPoints();
			   for(dataIndex=0;dataIndex<points.length;dataIndex++) {
					if (points[dataIndex].y > highest_y ) {
							  highest_y = points[dataIndex].y;
					}
			   }
		  }
	 }

	 if(highest_y<1 && highest_y>0) {
		  highest_y = 1;
	 }
	 if( highest_y >= 1 ) {
		 chart.axis_left.setExtremes( 0, Math.round(highest_y + (highest_y*.1)) );
	     chart.redraw(false);
	 }
}


//function is used for testing
function display_all_series_data() {
	 for(seriesIndex=0;seriesIndex<pseudo_bar_all_data_series.length;seriesIndex++) {
		  comparisonPoints = pseudo_bar_all_data_series[seriesIndex].getPoints();
		  for(dataIndex=0;dataIndex<comparisonPoints.length;dataIndex++) {
			   alert(comparisonPoints[dataIndex].y);
			   alert(comparisonPoints[dataIndex].userdata);
		  }
	 }
}

function populate_start_y(all_series) {
	 for(seriesIndex=0;seriesIndex<all_series.length;seriesIndex++) {
		  comparisonPoints = all_series[seriesIndex].getPoints();
		  for(dataIndex=0;dataIndex<comparisonPoints.length;dataIndex++) {
			   comparisonPoints[dataIndex].start_y = comparisonPoints[dataIndex].y;
		  }
	 }
}



var heightOffset = 0;
var fontRatioCharLength = 6;
var labels = [] ;

function draw_vertical_bar_labels(series_list,associatedBarLabelList,prefix,suffix) {
     prefix = prefix || null;
     suffix = suffix || null;
	 var additiveBarSeriesValueList = [];
	 if(series_list.length==0)
	   return
	 for(var i=0;i<series_list[0].getPoints().length;i++) {
		 additiveBarSeriesValueList[i]=0;
	 }

	 for(var dataSeriesIndex=0;dataSeriesIndex<series_list.length;dataSeriesIndex++) {
		 dataPoints = series_list[dataSeriesIndex].getPoints();
		 if(!labels[dataSeriesIndex])
			 labels[dataSeriesIndex] = [];
		 if(series_list[dataSeriesIndex]&&!series_list[dataSeriesIndex].visible) {
			 hideLabels(labels[dataSeriesIndex]);
			 continue;
		 }
		 for(var dataIndex=0;dataIndex<dataPoints.length;dataIndex++) {
			 //If series is invisible hide points
			 dataPoint = dataPoints[dataIndex];
			 displayValue = dataPoint.userdata;
			 value =dataPoint.y;   //this is due to the use of pusedo bars
			 binValue = dataPoint.x;

			 barEnd = {
				 top: chart.axis_left.pointToPixel(value),
				 left: chart.axis_bottom.pointToPixel(binValue)

			 };

			 var div;
			 var display = "";
			 if(prefix)
			    display += prefix;
			 
			 display += addCommas(format_data(displayValue));
			 
			 if(suffix)
			    display += suffix;
			 
			 if (!labels[dataSeriesIndex][dataIndex]) {
				 div = document.createElement('div');
				 div.className = associatedBarLabelList[dataSeriesIndex];
				 
				 div.innerHTML = display;
				 labels[dataSeriesIndex][dataIndex] = div;
				 document.body.appendChild(div);
			 } else {
				 div = labels[dataSeriesIndex][dataIndex];
				 div.innerHTML = display;
			 }

			 startPxl = chart.axis_left.pointToPixel(additiveBarSeriesValueList[dataIndex]);
			 barEnd.bottom = chart.axis_left.pointToPixel(additiveBarSeriesValueList[dataIndex]);
			 additiveBarSeriesValueList[dataIndex] = additiveBarSeriesValueList[dataIndex] + displayValue;

			 if (barEnd.top == undefined) { div.style.display = "none";continue; }
			 else if (barEnd.left == undefined) { div.style.display = "none";continue; }
			 else if (barEnd.bottom == undefined) { div.style.display = "none";continue; }

			 textLength = display.length;
			 pxlsLength = textLength * fontRatioCharLength;

			 divLeft = barEnd.left - (pxlsLength/2);
			 div.style.left = divLeft+"px";


			 //we want it right in the middle of the bar. So that is just the bar height /2 plus the zero
			 middleOfBar = ( (barEnd.top - startPxl) / 2) + startPxl;
			 //know move it over so the center of the text is at the center of the bar
		     divTop = middleOfBar - fontRatioCharLength;

		     if(!isNaN(divTop)) {
			   div.style.top = divTop+heightOffset+"px";
			   div.style.display = "block";
		     }

		 }
	 }

 }

var pseudo_bar_all_data_series = [];
var enable_initialize_pusedo_bar_filtering = false;

function initialize_pusedo_bar_filtering(all_data_series) {
	 pseudo_bar_all_data_series = all_data_series;
	 enable_initialize_pusedo_bar_filtering = true;
}