The Tor Browser: content/media/TextTrackCue.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:set ts=2 sw=2 et tw=78: */

     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/. */

     7 #ifndef mozilla_dom_TextTrackCue_h

     8 #define mozilla_dom_TextTrackCue_h

    10 #include "mozilla/DOMEventTargetHelper.h"

    11 #include "mozilla/dom/DocumentFragment.h"

    12 #include "mozilla/dom/VTTCueBinding.h"

    13 #include "nsCycleCollectionParticipant.h"

    14 #include "nsIWebVTTParserWrapper.h"

    15 #include "mozilla/StaticPtr.h"

    16 #include "nsIDocument.h"

    17 #include "mozilla/dom/HTMLDivElement.h"

    18 #include "mozilla/dom/UnionTypes.h"

    19 #include "mozilla/dom/TextTrack.h"

    21 namespace mozilla {

    22 namespace dom {

    24 class HTMLTrackElement;

    25 class TextTrackRegion;

    27 class TextTrackCue MOZ_FINAL : public DOMEventTargetHelper

    28 {

    29 public:

    30   NS_DECL_ISUPPORTS_INHERITED

    31   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TextTrackCue, DOMEventTargetHelper)

    33   // TextTrackCue WebIDL

    34   // See bug 868509 about splitting out the WebVTT-specific interfaces.

    35   static already_AddRefed<TextTrackCue>

    36   Constructor(GlobalObject& aGlobal,

    37               double aStartTime,

    38               double aEndTime,

    39               const nsAString& aText,

    40               ErrorResult& aRv)

    41   {

    42     nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());

    43     nsRefPtr<TextTrackCue> ttcue = new TextTrackCue(window, aStartTime,

    44                                                     aEndTime, aText, aRv);

    45     return ttcue.forget();

    46   }

    47   TextTrackCue(nsPIDOMWindow* aGlobal, double aStartTime, double aEndTime,

    48                const nsAString& aText, ErrorResult& aRv);

    50   TextTrackCue(nsPIDOMWindow* aGlobal, double aStartTime, double aEndTime,

    51                const nsAString& aText, HTMLTrackElement* aTrackElement,

    52                ErrorResult& aRv);

    54   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;

    56   TextTrack* GetTrack() const

    57   {

    58     return mTrack;

    59   }

    61   void GetId(nsAString& aId) const

    62   {

    63     aId = mId;

    64   }

    66   void SetId(const nsAString& aId)

    67   {

    68     if (mId == aId) {

    69       return;

    70     }

    72     mId = aId;

    73   }

    75   double StartTime() const

    76   {

    77     return mStartTime;

    78   }

    80   void SetStartTime(double aStartTime)

    81   {

    82     if (mStartTime == aStartTime) {

    83       return;

    84     }

    86     mStartTime = aStartTime;

    87     mReset = true;

    88   }

    90   double EndTime() const

    91   {

    92     return mEndTime;

    93   }

    95   void SetEndTime(double aEndTime)

    96   {

    97     if (mEndTime == aEndTime) {

    98       return;

    99     }

   101     mEndTime = aEndTime;

   102     mReset = true;

   103   }

   105   bool PauseOnExit()

   106   {

   107     return mPauseOnExit;

   108   }

   110   void SetPauseOnExit(bool aPauseOnExit)

   111   {

   112     if (mPauseOnExit == aPauseOnExit) {

   113       return;

   114     }

   116     mPauseOnExit = aPauseOnExit;

   117   }

   119   TextTrackRegion* GetRegion();

   120   void SetRegion(TextTrackRegion* aRegion);

   122   DirectionSetting Vertical() const

   123   {

   124     return mVertical;

   125   }

   127   void SetVertical(const DirectionSetting& aVertical)

   128   {

   129     if (mVertical == aVertical) {

   130       return;

   131     }

   133     mReset = true;

   134     mVertical = aVertical;

   135   }

   137   bool SnapToLines()

   138   {

   139     return mSnapToLines;

   140   }

   142   void SetSnapToLines(bool aSnapToLines)

   143   {

   144     if (mSnapToLines == aSnapToLines) {

   145       return;

   146     }

   148     mReset = true;

   149     mSnapToLines = aSnapToLines;

   150   }

   152   void GetLine(OwningLongOrAutoKeyword& aLine) const

   153   {

   154     if (mLineIsAutoKeyword) {

   155       aLine.SetAsAutoKeyword() = AutoKeyword::Auto;

   156       return;

   157     }

   158     aLine.SetAsLong() = mLineLong;

   159   }

   161   void SetLine(const LongOrAutoKeyword& aLine)

   162   {

   163     if (aLine.IsLong() &&

   164         (mLineIsAutoKeyword || (aLine.GetAsLong() != mLineLong))) {

   165       mLineIsAutoKeyword = false;

   166       mLineLong = aLine.GetAsLong();

   167       mReset = true;

   168       return;

   169     }

   170     if (aLine.IsAutoKeyword() && !mLineIsAutoKeyword) {

   171       mLineIsAutoKeyword = true;

   172       mReset = true;

   173     }

   174   }

   176   AlignSetting LineAlign() const

   177   {

   178     return mLineAlign;

   179   }

   181   void SetLineAlign(AlignSetting& aLineAlign, ErrorResult& aRv)

   182   {

   183     if (mLineAlign == aLineAlign)

   184       return;

   186     if (aLineAlign == AlignSetting::Left ||

   187         aLineAlign == AlignSetting::Right) {

   188       return aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);

   189     }

   191     mReset = true;

   192     mLineAlign = aLineAlign;

   193   }

   195   int32_t Position() const

   196   {

   197     return mPosition;

   198   }

   200   void SetPosition(int32_t aPosition, ErrorResult& aRv)

   201   {

   202     if (mPosition == aPosition) {

   203       return;

   204     }

   206     if (aPosition > 100 || aPosition < 0){

   207       aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);

   208       return;

   209     }

   211     mReset = true;

   212     mPosition = aPosition;

   213   }

   215   AlignSetting PositionAlign() const

   216   {

   217     return mPositionAlign;

   218   }

   220   void SetPositionAlign(AlignSetting aPositionAlign, ErrorResult& aRv)

   221   {

   222     if (mPositionAlign == aPositionAlign)

   223       return;

   225     if (aPositionAlign == AlignSetting::Left ||

   226         aPositionAlign == AlignSetting::Right) {

   227       return aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);

   228     }

   230     mReset = true;

   231     mPositionAlign = aPositionAlign;

   232   }

   234   int32_t Size() const

   235   {

   236     return mSize;

   237   }

   239   void SetSize(int32_t aSize, ErrorResult& aRv)

   240   {

   241     if (mSize == aSize) {

   242       return;

   243     }

   245     if (aSize < 0 || aSize > 100) {

   246       aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);

   247       return;

   248     }

   250     mReset = true;

   251     mSize = aSize;

   252   }

   254   AlignSetting Align() const

   255   {

   256     return mAlign;

   257   }

   259   void SetAlign(AlignSetting& aAlign)

   260   {

   261     if (mAlign == aAlign) {

   262       return;

   263     }

   265     mReset = true;

   266     mAlign = aAlign;

   267   }

   269   void GetText(nsAString& aText) const

   270   {

   271     aText = mText;

   272   }

   274   void SetText(const nsAString& aText)

   275   {

   276     if (mText == aText) {

   277       return;

   278     }

   280     mReset = true;

   281     mText = aText;

   282   }

   284   IMPL_EVENT_HANDLER(enter)

   285   IMPL_EVENT_HANDLER(exit)

   287   HTMLDivElement* GetDisplayState()

   288   {

   289     return static_cast<HTMLDivElement*>(mDisplayState.get());

   290   }

   292   void SetDisplayState(HTMLDivElement* aDisplayState)

   293   {

   294     mDisplayState = aDisplayState;

   295     mReset = false;

   296   }

   298   void Reset()

   299   {

   300     mReset = true;

   301   }

   303   bool HasBeenReset()

   304   {

   305     return mReset;

   306   }

   308   // Helper functions for implementation.

   309   bool

   310   operator==(const TextTrackCue& rhs) const

   311   {

   312     return mId.Equals(rhs.mId);

   313   }

   315   const nsAString& Id() const

   316   {

   317     return mId;

   318   }

   320   void SetTrack(TextTrack* aTextTrack)

   321   {

   322     mTrack = aTextTrack;

   323   }

   325   /**

   326    * Produces a tree of anonymous content based on the tree of the processed

   327    * cue text.

   328    *

   329    * Returns a DocumentFragment that is the head of the tree of anonymous

   330    * content.

   331    */

   332   already_AddRefed<DocumentFragment> GetCueAsHTML();

   334   void SetTrackElement(HTMLTrackElement* aTrackElement);

   336 private:

   337   void SetDefaultCueSettings();

   338   nsresult StashDocument();

   340   nsRefPtr<nsIDocument> mDocument;

   341   nsString mText;

   342   double mStartTime;

   343   double mEndTime;

   345   nsRefPtr<TextTrack> mTrack;

   346   nsRefPtr<HTMLTrackElement> mTrackElement;

   347   nsString mId;

   348   int32_t mPosition;

   349   AlignSetting mPositionAlign;

   350   int32_t mSize;

   351   bool mPauseOnExit;

   352   bool mSnapToLines;

   353   nsRefPtr<TextTrackRegion> mRegion;

   354   DirectionSetting mVertical;

   355   bool mLineIsAutoKeyword;

   356   long mLineLong;

   357   AlignSetting mAlign;

   358   AlignSetting mLineAlign;

   360   // Holds the computed DOM elements that represent the parsed cue text.

   361   // http://www.whatwg.org/specs/web-apps/current-work/#text-track-cue-display-state

   362   nsRefPtr<nsGenericHTMLElement> mDisplayState;

   363   // Tells whether or not we need to recompute mDisplayState. This is set

   364   // anytime a property that relates to the display of the TextTrackCue is

   365   // changed.

   366   bool mReset;

   368   static StaticRefPtr<nsIWebVTTParserWrapper> sParserWrapper;

   369 };

   371 } // namespace dom

   372 } // namespace mozilla

   374 #endif // mozilla_dom_TextTrackCue_h

The Tor Browser / file revision

content/media/TextTrackCue.h@44a2da4a2ab2

content/media/TextTrackCue.h