LCOV - code coverage report
Current view: top level - dom/html - TimeRanges.h (source / functions) Hit Total Coverage
Test: output.info Lines: 1 10 10.0 %
Date: 2017-07-14 16:53:18 Functions: 2 11 18.2 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_dom_TimeRanges_h_
       8             : #define mozilla_dom_TimeRanges_h_
       9             : 
      10             : #include "nsCOMPtr.h"
      11             : #include "nsIDOMTimeRanges.h"
      12             : #include "nsISupports.h"
      13             : #include "nsTArray.h"
      14             : #include "nsWrapperCache.h"
      15             : #include "mozilla/ErrorResult.h"
      16             : 
      17             : namespace mozilla {
      18             : namespace dom {
      19             : 
      20             : class TimeRanges;
      21             : 
      22             : } // namespace dom
      23             : 
      24             : namespace dom {
      25             : 
      26             : // Implements media TimeRanges:
      27             : // http://www.whatwg.org/specs/web-apps/current-work/multipage/video.html#timeranges
      28             : class TimeRanges final : public nsIDOMTimeRanges,
      29             :                          public nsWrapperCache
      30             : {
      31             : public:
      32             :   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
      33           2 :   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TimeRanges)
      34             :   NS_DECL_NSIDOMTIMERANGES
      35             : 
      36             :   TimeRanges();
      37             :   explicit TimeRanges(nsISupports* aParent);
      38             : 
      39             :   void Add(double aStart, double aEnd);
      40             : 
      41             :   // Returns the start time of the first range, or -1 if no ranges exist.
      42             :   double GetStartTime();
      43             : 
      44             :   // Returns the end time of the last range, or -1 if no ranges exist.
      45             :   double GetEndTime();
      46             : 
      47             :   // See http://www.whatwg.org/html/#normalized-timeranges-object
      48             :   void Normalize(double aTolerance = 0.0);
      49             : 
      50             :   // Mutate this TimeRange to be the union of this and aOtherRanges.
      51             :   void Union(const TimeRanges* aOtherRanges, double aTolerance);
      52             : 
      53             :   // Mutate this TimeRange to be the intersection of this and aOtherRanges.
      54             :   void Intersection(const TimeRanges* aOtherRanges);
      55             : 
      56             :   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
      57             : 
      58             :   nsISupports* GetParentObject() const;
      59             : 
      60           0 :   uint32_t Length() const
      61             :   {
      62           0 :     return mRanges.Length();
      63             :   }
      64             : 
      65             :   virtual double Start(uint32_t aIndex, ErrorResult& aRv);
      66             : 
      67             :   virtual double End(uint32_t aIndex, ErrorResult& aRv);
      68             : 
      69             :   // Shift all values by aOffset seconds.
      70             :   void Shift(double aOffset);
      71             : 
      72             : private:
      73             :   ~TimeRanges();
      74             : 
      75             :   // Comparator which orders TimeRanges by start time. Used by Normalize().
      76             :   struct TimeRange
      77             :   {
      78           0 :     TimeRange(double aStart, double aEnd)
      79           0 :       : mStart(aStart),
      80           0 :         mEnd(aEnd) {}
      81             :     double mStart;
      82             :     double mEnd;
      83             :   };
      84             : 
      85             :   struct CompareTimeRanges
      86             :   {
      87           0 :     bool Equals(const TimeRange& aTr1, const TimeRange& aTr2) const {
      88           0 :       return aTr1.mStart == aTr2.mStart && aTr1.mEnd == aTr2.mEnd;
      89             :     }
      90             : 
      91           0 :     bool LessThan(const TimeRange& aTr1, const TimeRange& aTr2) const {
      92           0 :       return aTr1.mStart < aTr2.mStart;
      93             :     }
      94             :   };
      95             : 
      96             :   AutoTArray<TimeRange,4> mRanges;
      97             : 
      98             :   nsCOMPtr<nsISupports> mParent;
      99             : 
     100             : public:
     101             :   typedef nsTArray<TimeRange>::index_type index_type;
     102             :   static const index_type NoIndex = index_type(-1);
     103             : 
     104             :   index_type Find(double aTime, double aTolerance = 0);
     105             : 
     106             :   bool Contains(double aStart, double aEnd) {
     107             :     index_type target = Find(aStart);
     108             :     if (target == NoIndex) {
     109             :       return false;
     110             :     }
     111             : 
     112             :     return mRanges[target].mEnd >= aEnd;
     113             :   }
     114             : };
     115             : 
     116             : } // namespace dom
     117             : } // namespace mozilla
     118             : 
     119             : #endif // mozilla_dom_TimeRanges_h_

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