Bug 1310078 - Implement valueAsNumber and valueAsDate for <input type=datetime-local>

dom/html/HTMLInputElement.h

@@ -1075,11 +1075,7 @@ protected:
   /**
    * Returns if valueAsNumber attribute applies for the current type.
    */
-  bool DoesValueAsNumberApply() const
-  {
-    // TODO: this is temporary until bug 888331 is fixed.
-    return DoesMinMaxApply() && mType != NS_FORM_INPUT_DATETIME_LOCAL;
-  }
+  bool DoesValueAsNumberApply() const { return DoesMinMaxApply(); }
 
   /**
    * Returns if autocomplete attribute applies for the current type.
@@ -1287,6 +1283,7 @@ protected:
    * https://html.spec.whatwg.org/multipage/infrastructure.html#valid-normalised-local-date-and-time-string
    */
   void NormalizeDateTimeLocal(nsAString& aValue) const;
+
   /**
    * This methods returns the number of days since epoch for a given year and
    * week.
@@ -1317,6 +1314,13 @@ protected:
    */
   uint32_t MaximumWeekInYear(uint32_t aYear) const;
 
+  /**
+   * This method converts aValue (milliseconds within a day) to hours, minutes,
+   * seconds and milliseconds.
+   */
+  bool GetTimeFromMs(double aValue, uint16_t* aHours, uint16_t* aMinutes,
+                     uint16_t* aSeconds, uint16_t* aMilliseconds) const;
+
   /**
    * This methods returns true if it's a leap year.
    */