text: /* Pretty handling of time axes.
  
  Copyright (c) 2007-2014 IOLA and Ole Laursen.
  Licensed under the MIT license.
  
  Set axis.mode to "time" to enable. See the section "Time series data" in
  API.txt for details.
  */
  
  (function($) {
      'use strict';
  
      var options = {
          xaxis: {
              timezone: null, // "browser" for local to the client or timezone for timezone-js
              timeformat: null, // format string to use
              twelveHourClock: false, // 12 or 24 time in time mode
              monthNames: null, // list of names of months
              timeBase: 'seconds' // are the values in given in mircoseconds, milliseconds or seconds
          },
          yaxis: {
              timeBase: 'seconds'
          }
      };
  
      var floorInBase = $.plot.saturated.floorInBase;
  
      // Method to provide microsecond support to Date like classes.
      var CreateMicroSecondDate = function(dateType, microEpoch) {
          var newDate = new dateType(microEpoch);
  
          var oldSetTime = newDate.setTime.bind(newDate);
          newDate.update = function(microEpoch) {
              oldSetTime(microEpoch);
  
              // Round epoch to 3 decimal accuracy
              microEpoch = Math.round(microEpoch*1000)/1000;
              this.microEpoch = microEpoch;
  
              // Microseconds are stored as integers
              var seconds = microEpoch/1000;
              this.microseconds = 1000000 * (seconds - Math.floor(seconds));
          };
  
          newDate.getTime = function () {
              return this.microEpoch;
          };
  
          newDate.setTime = function (microEpoch) {
              this.update(microEpoch);
          };
  
          newDate.getMicroseconds = function() {
              return this.microseconds;
          };
  
          newDate.setMicroseconds = function(microseconds) {
              // Replace the microsecond part (6 last digits) in microEpoch
              var epochWithoutMicroseconds = 1000*Math.floor(this.microEpoch/1000);
              var newEpoch = epochWithoutMicroseconds + microseconds/1000;
              this.update(newEpoch);
          };
  
          newDate.setUTCMicroseconds = function(microseconds) { this.setMicroseconds(microseconds); }
  
          newDate.getUTCMicroseconds = function() { return this.getMicroseconds(); }
  
          newDate.microseconds = null;
          newDate.microEpoch = null;
          newDate.update(microEpoch);
          return newDate;
      }
  
      // Returns a string with the date d formatted according to fmt.
      // A subset of the Open Group's strftime format is supported.
  
      function formatDate(d, fmt, monthNames, dayNames) {
          if (typeof d.strftime === "function") {
              return d.strftime(fmt);
          }
  
          var leftPad = function(n, pad) {
  			n = "" + n;
  			pad = "" + (pad == null ? "0" : pad);
  			return n.length === 1 ? pad + n : n;
  		};
  
  		var formatMicroseconds = function(n, dec) {
  			if (dec < 6 && dec > 0) {
  				var magnitude = Math.pow(10,dec-6);
  				n = Math.round(Math.round(n*magnitude)/magnitude);
  				n = ('00000' + n).slice(-6,-(6 - dec));
  			} else {
                  n = Math.round(n)
  				n = ('00000' + n).slice(-6);
  			}
  			return n;
  		};
  
          var r = [];
          var escape = false;
          var hours = d.getHours();
  		var isAM = hours < 12;
  
          if (!monthNames) {
              monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
          }
  
          if (!dayNames) {
              dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
          }
  
          var hours12;
  		if (hours > 12) {
  			hours12 = hours - 12;
  		} else if (hours === 0) {
  			hours12 = 12;
  		} else {
  			hours12 = hours;
  		}
  
          var decimals = -1;
          for (var i = 0; i < fmt.length; ++i) {
  			var c = fmt.charAt(i);
  
              if (!isNaN(Number(c)) && Number(c) > 0) {
                  decimals = Number(c);
              } else if (escape) {
  				switch (c) {
  					case 'a': c = "" + dayNames[d.getDay()]; break;
  					case 'b': c = "" + monthNames[d.getMonth()]; break;
  					case 'd': c = leftPad(d.getDate()); break;
  					case 'e': c = leftPad(d.getDate(), " "); break;
  					case 'h':	// For back-compat with 0.7; remove in 1.0
  					case 'H': c = leftPad(hours); break;
  					case 'I': c = leftPad(hours12); break;
  					case 'l': c = leftPad(hours12, " "); break;
  					case 'm': c = leftPad(d.getMonth() + 1); break;
  					case 'M': c = leftPad(d.getMinutes()); break;
  					// quarters not in Open Group's strftime specification
  					case 'q':
  						c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
  					case 'S': c = leftPad(d.getSeconds()); break;
  					case 's': c = "" + formatMicroseconds(d.getMicroseconds(),decimals); break;
  					case 'y': c = leftPad(d.getFullYear() % 100); break;
  					case 'Y': c = "" + d.getFullYear(); break;
  					case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
  					case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
  					case 'w': c = "" + d.getDay(); break;
  				}
  				r.push(c);
  				escape = false;
  			} else {
  				if (c == "%") {
  					escape = true;
  				} else {
  					r.push(c);
  				}
  			}
  		}
  
  		return r.join("");
      }
  
      // To have a consistent view of time-based data independent of which time
      // zone the client happens to be in we need a date-like object independent
      // of time zones.  This is done through a wrapper that only calls the UTC
      // versions of the accessor methods.
  
      function makeUtcWrapper(d) {
          function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
              sourceObj[sourceMethod] = function() {
                  return targetObj[targetMethod].apply(targetObj, arguments);
              };
          }
  
          var utc = {
              date: d
          };
  
          // support strftime, if found
          if (d.strftime !== undefined) {
              addProxyMethod(utc, "strftime", d, "strftime");
          }
  
          addProxyMethod(utc, "getTime", d, "getTime");
          addProxyMethod(utc, "setTime", d, "setTime");
  
          var props = ["Date", "Day", "FullYear", "Hours", "Minutes", "Month", "Seconds", "Milliseconds", "Microseconds"];
  
          for (var p = 0; p < props.length; p++) {
              addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
              addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
          }
  
          return utc;
      }
  
      // select time zone strategy.  This returns a date-like object tied to the
      // desired timezone
      function dateGenerator(ts, opts) {
          var maxDateValue = 8640000000000000;
  
          if (opts && opts.timeBase === 'seconds') {
              ts *= 1000;
          } else if (opts.timeBase === 'microseconds') {
              ts /= 1000;
          }
  
          if (ts > maxDateValue) {
              ts = maxDateValue;
          } else if (ts < -maxDateValue) {
              ts = -maxDateValue;
          }
  
          if (opts.timezone === "browser") {
              return CreateMicroSecondDate(Date, ts);
          } else if (!opts.timezone || opts.timezone === "utc") {
              return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
          } else if (typeof timezoneJS !== "undefined" && typeof timezoneJS.Date !== "undefined") {
              var d = CreateMicroSecondDate(timezoneJS.Date, ts);
              // timezone-js is fickle, so be sure to set the time zone before
              // setting the time.
              d.setTimezone(opts.timezone);
              d.setTime(ts);
              return d;
          } else {
              return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
          }
      }
  
      // map of app. size of time units in seconds
      var timeUnitSizeSeconds = {
          "microsecond": 0.000001,
          "millisecond": 0.001,
          "second": 1,
          "minute": 60,
          "hour": 60 * 60,
          "day": 24 * 60 * 60,
          "month": 30 * 24 * 60 * 60,
          "quarter": 3 * 30 * 24 * 60 * 60,
          "year": 365.2425 * 24 * 60 * 60
      };
  
      // map of app. size of time units in milliseconds
      var timeUnitSizeMilliseconds = {
          "microsecond": 0.001,
          "millisecond": 1,
          "second": 1000,
          "minute": 60 * 1000,
          "hour": 60 * 60 * 1000,
          "day": 24 * 60 * 60 * 1000,
          "month": 30 * 24 * 60 * 60 * 1000,
          "quarter": 3 * 30 * 24 * 60 * 60 * 1000,
          "year": 365.2425 * 24 * 60 * 60 * 1000
      };
  
      // map of app. size of time units in microseconds
      var timeUnitSizeMicroseconds = {
          "microsecond": 1,
          "millisecond": 1000,
          "second": 1000000,
          "minute": 60 * 1000000,
          "hour": 60 * 60 * 1000000,
          "day": 24 * 60 * 60 * 1000000,
          "month": 30 * 24 * 60 * 60 * 1000000,
          "quarter": 3 * 30 * 24 * 60 * 60 * 1000000,
          "year": 365.2425 * 24 * 60 * 60 * 1000000
      };
  
      // the allowed tick sizes, after 1 year we use
      // an integer algorithm
  
      var baseSpec = [
          [1, "microsecond"], [2, "microsecond"], [5, "microsecond"], [10, "microsecond"],
          [25, "microsecond"], [50, "microsecond"], [100, "microsecond"], [250, "microsecond"], [500, "microsecond"],
          [1, "millisecond"], [2, "millisecond"], [5, "millisecond"], [10, "millisecond"],
          [25, "millisecond"], [50, "millisecond"], [100, "millisecond"], [250, "millisecond"], [500, "millisecond"],
          [1, "second"], [2, "second"], [5, "second"], [10, "second"],
          [30, "second"],
          [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
          [30, "minute"],
          [1, "hour"], [2, "hour"], [4, "hour"],
          [8, "hour"], [12, "hour"],
          [1, "day"], [2, "day"], [3, "day"],
          [0.25, "month"], [0.5, "month"], [1, "month"],
          [2, "month"]
      ];
  
      // we don't know which variant(s) we'll need yet, but generating both is
      // cheap
  
      var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
          [1, "year"]]);
      var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
          [1, "year"]]);
  
  
      function dateTickGenerator(axis) {
          var opts = axis.options,
              ticks = [],
              d = dateGenerator(axis.min, opts),
              minSize = 0;
  
          // make quarter use a possibility if quarters are
          // mentioned in either of these options
          var spec = (opts.tickSize && opts.tickSize[1] ===
              "quarter") ||
              (opts.minTickSize && opts.minTickSize[1] ===
              "quarter") ? specQuarters : specMonths;
  
          var timeUnitSize;
          if (opts.timeBase === 'seconds') {
              timeUnitSize = timeUnitSizeSeconds;
          } else if (opts.timeBase === 'microseconds') {
              timeUnitSize = timeUnitSizeMicroseconds;
          } else {
              timeUnitSize = timeUnitSizeMilliseconds;
          }
  
          if (opts.minTickSize !== null && opts.minTickSize !== undefined) {
              if (typeof opts.tickSize === "number") {
                  minSize = opts.tickSize;
              } else {
                  minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
              }
          }
  
          for (var i = 0; i < spec.length - 1; ++i) {
              if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]] +
                  spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 &&
                  spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
                  break;
              }
          }
  
          var size = spec[i][0];
          var unit = spec[i][1];
          // special-case the possibility of several years
          if (unit === "year") {
              // if given a minTickSize in years, just use it,
              // ensuring that it's an integer
  
              if (opts.minTickSize !== null && opts.minTickSize !== undefined && opts.minTickSize[1] === "year") {
                  size = Math.floor(opts.minTickSize[0]);
              } else {
                  var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
                  var norm = (axis.delta / timeUnitSize.year) / magn;
  
                  if (norm < 1.5) {
                      size = 1;
                  } else if (norm < 3) {
                      size = 2;
                  } else if (norm < 7.5) {
                      size = 5;
                  } else {
                      size = 10;
                  }
  
                  size *= magn;
              }
  
              // minimum size for years is 1
  
              if (size < 1) {
                  size = 1;
              }
          }
  
          axis.tickSize = opts.tickSize || [size, unit];
          var tickSize = axis.tickSize[0];
          unit = axis.tickSize[1];
  
          var step = tickSize * timeUnitSize[unit];
  
          if (unit === "microsecond") {
              d.setMicroseconds(floorInBase(d.getMicroseconds(), tickSize));
          } else if (unit === "millisecond") {
              d.setMilliseconds(floorInBase(d.getMilliseconds(), tickSize));
          } else if (unit === "second") {
              d.setSeconds(floorInBase(d.getSeconds(), tickSize));
          } else if (unit === "minute") {
              d.setMinutes(floorInBase(d.getMinutes(), tickSize));
          } else if (unit === "hour") {
              d.setHours(floorInBase(d.getHours(), tickSize));
          } else if (unit === "month") {
              d.setMonth(floorInBase(d.getMonth(), tickSize));
          } else if (unit === "quarter") {
              d.setMonth(3 * floorInBase(d.getMonth() / 3,
                  tickSize));
          } else if (unit === "year") {
              d.setFullYear(floorInBase(d.getFullYear(), tickSize));
          }
  
          // reset smaller components
  
          if (step >= timeUnitSize.millisecond) {
              if (step >= timeUnitSize.second) {
                  d.setMicroseconds(0);
              } else {
                  d.setMicroseconds(d.getMilliseconds()*1000);
              }
          }
          if (step >= timeUnitSize.minute) {
              d.setSeconds(0);
          }
          if (step >= timeUnitSize.hour) {
              d.setMinutes(0);
          }
          if (step >= timeUnitSize.day) {
              d.setHours(0);
          }
          if (step >= timeUnitSize.day * 4) {
              d.setDate(1);
          }
          if (step >= timeUnitSize.month * 2) {
              d.setMonth(floorInBase(d.getMonth(), 3));
          }
          if (step >= timeUnitSize.quarter * 2) {
              d.setMonth(floorInBase(d.getMonth(), 6));
          }
          if (step >= timeUnitSize.year) {
              d.setMonth(0);
          }
  
          var carry = 0;
          var v = Number.NaN;
          var v1000;
          var prev;
          do {
              prev = v;
              v1000 = d.getTime();
              if (opts && opts.timeBase === 'seconds') {
                  v = v1000 / 1000;
              } else if (opts && opts.timeBase === 'microseconds') {
                  v = v1000 * 1000;
              } else {
                  v = v1000;
              }
  
              ticks.push(v);
  
              if (unit === "month" || unit === "quarter") {
                  if (tickSize < 1) {
                      // a bit complicated - we'll divide the
                      // month/quarter up but we need to take
                      // care of fractions so we don't end up in
                      // the middle of a day
                      d.setDate(1);
                      var start = d.getTime();
                      d.setMonth(d.getMonth() +
                          (unit === "quarter" ? 3 : 1));
                      var end = d.getTime();
                      d.setTime((v + carry * timeUnitSize.hour + (end - start) * tickSize));
                      carry = d.getHours();
                      d.setHours(0);
                  } else {
                      d.setMonth(d.getMonth() +
                          tickSize * (unit === "quarter" ? 3 : 1));
                  }
              } else if (unit === "year") {
                  d.setFullYear(d.getFullYear() + tickSize);
              } else {
                  if (opts.timeBase === 'seconds') {
                      d.setTime((v + step) * 1000);
                  } else if (opts.timeBase === 'microseconds') {
                      d.setTime((v + step) / 1000);
                  } else {
                      d.setTime(v + step);
                  }
              }
          } while (v < axis.max && v !== prev);
  
          return ticks;
      };
  
      function init(plot) {
          plot.hooks.processOptions.push(function (plot) {
              $.each(plot.getAxes(), function(axisName, axis) {
                  var opts = axis.options;
                  if (opts.mode === "time") {
                      axis.tickGenerator = dateTickGenerator;
  
                      axis.tickFormatter = function (v, axis) {
                          var d = dateGenerator(v, axis.options);
  
                          // first check global format
  						if (opts.timeformat != null) {
  							return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
  						}
  
  						// possibly use quarters if quarters are mentioned in
  						// any of these places
  						var useQuarters = (axis.options.tickSize &&
  								axis.options.tickSize[1] == "quarter") ||
  							(axis.options.minTickSize &&
                                  axis.options.minTickSize[1] == "quarter");
  
                          var timeUnitSize;
                          if (opts.timeBase === 'seconds') {
                              timeUnitSize = timeUnitSizeSeconds;
                          } else if (opts.timeBase === 'microseconds') {
                              timeUnitSize = timeUnitSizeMicroseconds;
                          } else {
                              timeUnitSize = timeUnitSizeMilliseconds;
                          }
  
  						var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
  						var span = axis.max - axis.min;
  						var suffix = (opts.twelveHourClock) ? " %p" : "";
  						var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
                          var factor;
  						var fmt;
  
                          if (opts.timeBase === 'seconds') {
                              factor = 1;
                          } else if (opts.timeBase === 'microseconds') {
                              factor = 1000000
                          } else {
                              factor = 1000;
                          }
  
                          if (t < timeUnitSize.second) {
                              var decimals = -Math.floor(Math.log10(t/factor))
  
                              // the two-and-halves require an additional decimal
                              if (String(t).indexOf('25') > -1) {
                                  decimals++;
                              }
  
  							fmt = "%S.%" + decimals + "s";
                          } else
                          if (t < timeUnitSize.minute) {
  							fmt = hourCode + ":%M:%S" + suffix;
  						} else if (t < timeUnitSize.day) {
  							if (span < 2 * timeUnitSize.day) {
  								fmt = hourCode + ":%M" + suffix;
  							} else {
  								fmt = "%b %d " + hourCode + ":%M" + suffix;
  							}
  						} else if (t < timeUnitSize.month) {
  							fmt = "%b %d";
  						} else if ((useQuarters && t < timeUnitSize.quarter) ||
  							(!useQuarters && t < timeUnitSize.year)) {
  							if (span < timeUnitSize.year) {
  								fmt = "%b";
  							} else {
  								fmt = "%b %Y";
  							}
  						} else if (useQuarters && t < timeUnitSize.year) {
  							if (span < timeUnitSize.year) {
  								fmt = "Q%q";
  							} else {
  								fmt = "Q%q %Y";
  							}
  						} else {
  							fmt = "%Y";
  						}
  
  						var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
  
  						return rt;
                      };
                  }
              });
          });
      }
  
      $.plot.plugins.push({
          init: init,
          options: options,
          name: 'time',
          version: '1.0'
      });
  
      // Time-axis support used to be in Flot core, which exposed the
      // formatDate function on the plot object.  Various plugins depend
      // on the function, so we need to re-expose it here.
  
      $.plot.formatDate = formatDate;
      $.plot.dateGenerator = dateGenerator;
      $.plot.dateTickGenerator = dateTickGenerator;
      $.plot.makeUtcWrapper = makeUtcWrapper;
  })(jQuery);
  