updated major step for hidden dates

lib/timeline/DateUtil.js

@@ -199,9 +199,11 @@ exports.stepOverHiddenDates = function(timeStep, previousTime) {
   if (stepInHidden == true && currentValue < timeStep._end.valueOf() && currentValue != previousTime) {
     var prevValue = moment(previousTime);
     var newValue = moment(endDate);
-    if (prevValue.dayOfYear() != newValue.dayOfYear()) {
-      timeStep.switchedDay = true;
-    }
+    //check if the next step should be major
+    if (prevValue.year() != newValue.year()) {timeStep.switchedYear = true;}
+    else if (prevValue.month() != newValue.month()) {timeStep.switchedMonth = true;}
+    else if (prevValue.dayOfYear() != newValue.dayOfYear()) {timeStep.switchedDay = true;}
+
     timeStep.current = newValue.toDate();
   }
 };

lib/timeline/TimeStep.js

@@ -42,6 +42,8 @@ function TimeStep(start, end, minimumStep, hiddenDates) {
 
   // hidden Dates options
   this.switchedDay = false;
+  this.switchedMonth = false;
+  this.switchedYear = false;
   this.hiddenDates = hiddenDates;
   if (hiddenDates === undefined) {
     this.hiddenDates = [];
@@ -404,7 +406,31 @@ TimeStep.prototype.snap = function(date) {
  * @return {boolean} true if current date is major, else false.
  */
 TimeStep.prototype.isMajor = function() {
-  if (this.switchedDay == true) {
+  if (this.switchedYear == true) {
+    this.switchedYear = false;
+    switch (this.scale) {
+      case TimeStep.SCALE.YEAR:
+      case TimeStep.SCALE.MONTH:
+      case TimeStep.SCALE.WEEKDAY:
+      case TimeStep.SCALE.DAY:
+        return true;
+      default:
+        return false;
+    }
+  }
+  else if (this.switchedMonth == true) {
+    this.switchedMonth = false;
+    switch (this.scale) {
+      case TimeStep.SCALE.YEAR:
+      case TimeStep.SCALE.MONTH:
+      case TimeStep.SCALE.WEEKDAY:
+      case TimeStep.SCALE.DAY:
+        return true;
+      default:
+        return false;
+    }
+  }
+  else if (this.switchedDay == true) {
     this.switchedDay = false;
     switch (this.scale) {
       case TimeStep.SCALE.MILLISECOND:
@@ -417,6 +443,7 @@ TimeStep.prototype.isMajor = function() {
     }
   }
 
+
   switch (this.scale) {
     case TimeStep.SCALE.MILLISECOND:
       return (this.current.getMilliseconds() == 0);