author Mike Conley <>
Tue, 13 Oct 2015 12:35:42 -0400
changeset 303013 1fd3c4dcbd396e84bf5cc6561ae5e411c3af9ce3
parent 301723 41dea9df27ed995f8315ab4318c187a617937664
child 303345 e8c7dfe727cd970e2c3294934e2927b14143c205
permissions -rw-r--r--
Bug 1214256 - Add talos virtualenv and tp5n files to .hgignore and .gitignore. r=gps

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at */


#include "nsSMILInstanceTime.h"
#include "nsTArray.h"

// nsSMILInterval class
// A structure consisting of a begin and end time. The begin time must be
// resolved (i.e. not indefinite or unresolved).
// For an overview of how this class is related to other SMIL time classes see
// the documentation in nsSMILTimeValue.h

class nsSMILInterval
  nsSMILInterval(const nsSMILInterval& aOther);
  void Unlink(bool aFiltered = false);

  const nsSMILInstanceTime* Begin() const
    MOZ_ASSERT(mBegin && mEnd,
               "Requesting Begin() on un-initialized instance time");
    return mBegin;
  nsSMILInstanceTime* Begin();

  const nsSMILInstanceTime* End() const
    MOZ_ASSERT(mBegin && mEnd,
               "Requesting End() on un-initialized instance time");
    return mEnd;
  nsSMILInstanceTime* End();

  void SetBegin(nsSMILInstanceTime& aBegin);
  void SetEnd(nsSMILInstanceTime& aEnd);
  void Set(nsSMILInstanceTime& aBegin, nsSMILInstanceTime& aEnd)

  void FixBegin();
  void FixEnd();

  typedef nsTArray<nsRefPtr<nsSMILInstanceTime> > InstanceTimeList;

  void AddDependentTime(nsSMILInstanceTime& aTime);
  void RemoveDependentTime(const nsSMILInstanceTime& aTime);
  void GetDependentTimes(InstanceTimeList& aTimes);

  // Cue for assessing if this interval can be filtered
  bool IsDependencyChainLink() const;

  nsRefPtr<nsSMILInstanceTime> mBegin;
  nsRefPtr<nsSMILInstanceTime> mEnd;

  // nsSMILInstanceTimes to notify when this interval is changed or deleted.
  InstanceTimeList mDependentTimes;

  // Indicates if the end points of the interval are fixed or not.
  // Note that this is not the same as having an end point whose TIME is fixed
  // (i.e. nsSMILInstanceTime::IsFixed() returns true). This is because it is
  // possible to have an end point with a fixed TIME and yet still update the
  // end point to refer to a different nsSMILInstanceTime object.
  // However, if mBegin/EndFixed is true, then BOTH the nsSMILInstanceTime
  // OBJECT returned for that end point and its TIME value will not change.
  bool mBeginFixed;
  bool mEndFixed;