The Tor Browser / file comparison
comparison: content/media/TextTrackCue.cpp
content/media/TextTrackCue.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:ab39e980fdfe |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "mozilla/dom/HTMLTrackElement.h" | |
| 7 #include "mozilla/dom/TextTrackCue.h" | |
| 8 #include "mozilla/dom/TextTrackRegion.h" | |
| 9 #include "nsComponentManagerUtils.h" | |
| 10 #include "mozilla/ClearOnShutdown.h" | |
| 11 | |
| 12 namespace mozilla { | |
| 13 namespace dom { | |
| 14 | |
| 15 NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrackCue, | |
| 16 DOMEventTargetHelper, | |
| 17 mDocument, | |
| 18 mTrack, | |
| 19 mTrackElement, | |
| 20 mDisplayState, | |
| 21 mRegion) | |
| 22 | |
| 23 NS_IMPL_ADDREF_INHERITED(TextTrackCue, DOMEventTargetHelper) | |
| 24 NS_IMPL_RELEASE_INHERITED(TextTrackCue, DOMEventTargetHelper) | |
| 25 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackCue) | |
| 26 NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper) | |
| 27 | |
| 28 StaticRefPtr<nsIWebVTTParserWrapper> TextTrackCue::sParserWrapper; | |
| 29 | |
| 30 // Set cue setting defaults based on step 19 & seq. | |
| 31 // in http://dev.w3.org/html5/webvtt/#parsing | |
| 32 void | |
| 33 TextTrackCue::SetDefaultCueSettings() | |
| 34 { | |
| 35 mPosition = 50; | |
| 36 mPositionAlign = AlignSetting::Middle; | |
| 37 mSize = 100; | |
| 38 mPauseOnExit = false; | |
| 39 mSnapToLines = true; | |
| 40 mLineIsAutoKeyword = true; | |
| 41 mAlign = AlignSetting::Middle; | |
| 42 mLineAlign = AlignSetting::Start; | |
| 43 mVertical = DirectionSetting::_empty; | |
| 44 } | |
| 45 | |
| 46 TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow, | |
| 47 double aStartTime, | |
| 48 double aEndTime, | |
| 49 const nsAString& aText, | |
| 50 ErrorResult& aRv) | |
| 51 : DOMEventTargetHelper(aOwnerWindow) | |
| 52 , mText(aText) | |
| 53 , mStartTime(aStartTime) | |
| 54 , mEndTime(aEndTime) | |
| 55 , mReset(false) | |
| 56 { | |
| 57 SetDefaultCueSettings(); | |
| 58 MOZ_ASSERT(aOwnerWindow); | |
| 59 if (NS_FAILED(StashDocument())) { | |
| 60 aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); | |
| 61 } | |
| 62 } | |
| 63 | |
| 64 TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow, | |
| 65 double aStartTime, | |
| 66 double aEndTime, | |
| 67 const nsAString& aText, | |
| 68 HTMLTrackElement* aTrackElement, | |
| 69 ErrorResult& aRv) | |
| 70 : DOMEventTargetHelper(aOwnerWindow) | |
| 71 , mText(aText) | |
| 72 , mStartTime(aStartTime) | |
| 73 , mEndTime(aEndTime) | |
| 74 , mTrackElement(aTrackElement) | |
| 75 , mReset(false) | |
| 76 { | |
| 77 SetDefaultCueSettings(); | |
| 78 MOZ_ASSERT(aOwnerWindow); | |
| 79 if (NS_FAILED(StashDocument())) { | |
| 80 aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 /** Save a reference to our creating document so we don't have to | |
| 85 * keep getting it from our window. | |
| 86 */ | |
| 87 nsresult | |
| 88 TextTrackCue::StashDocument() | |
| 89 { | |
| 90 nsPIDOMWindow* window = GetOwner(); | |
| 91 if (!window) { | |
| 92 return NS_ERROR_NO_INTERFACE; | |
| 93 } | |
| 94 mDocument = window->GetDoc(); | |
| 95 if (!mDocument) { | |
| 96 return NS_ERROR_NOT_AVAILABLE; | |
| 97 } | |
| 98 return NS_OK; | |
| 99 } | |
| 100 | |
| 101 already_AddRefed<DocumentFragment> | |
| 102 TextTrackCue::GetCueAsHTML() | |
| 103 { | |
| 104 // mDocument may be null during cycle collector shutdown. | |
| 105 // See bug 941701. | |
| 106 if (!mDocument) { | |
| 107 return nullptr; | |
| 108 } | |
| 109 | |
| 110 if (!sParserWrapper) { | |
| 111 nsresult rv; | |
| 112 nsCOMPtr<nsIWebVTTParserWrapper> parserWrapper = | |
| 113 do_CreateInstance(NS_WEBVTTPARSERWRAPPER_CONTRACTID, &rv); | |
| 114 if (NS_FAILED(rv)) { | |
| 115 return mDocument->CreateDocumentFragment(); | |
| 116 } | |
| 117 sParserWrapper = parserWrapper; | |
| 118 ClearOnShutdown(&sParserWrapper); | |
| 119 } | |
| 120 | |
| 121 nsPIDOMWindow* window = mDocument->GetWindow(); | |
| 122 if (!window) { | |
| 123 return mDocument->CreateDocumentFragment(); | |
| 124 } | |
| 125 | |
| 126 nsCOMPtr<nsIDOMHTMLElement> div; | |
| 127 sParserWrapper->ConvertCueToDOMTree(window, this, | |
| 128 getter_AddRefs(div)); | |
| 129 if (!div) { | |
| 130 return mDocument->CreateDocumentFragment(); | |
| 131 } | |
| 132 nsRefPtr<DocumentFragment> docFrag = mDocument->CreateDocumentFragment(); | |
| 133 nsCOMPtr<nsIDOMNode> throwAway; | |
| 134 docFrag->AppendChild(div, getter_AddRefs(throwAway)); | |
| 135 | |
| 136 return docFrag.forget(); | |
| 137 } | |
| 138 | |
| 139 void | |
| 140 TextTrackCue::SetTrackElement(HTMLTrackElement* aTrackElement) | |
| 141 { | |
| 142 mTrackElement = aTrackElement; | |
| 143 } | |
| 144 | |
| 145 JSObject* | |
| 146 TextTrackCue::WrapObject(JSContext* aCx) | |
| 147 { | |
| 148 return VTTCueBinding::Wrap(aCx, this); | |
| 149 } | |
| 150 | |
| 151 TextTrackRegion* | |
| 152 TextTrackCue::GetRegion() | |
| 153 { | |
| 154 return mRegion; | |
| 155 } | |
| 156 | |
| 157 void | |
| 158 TextTrackCue::SetRegion(TextTrackRegion* aRegion) | |
| 159 { | |
| 160 if (mRegion == aRegion) { | |
| 161 return; | |
| 162 } | |
| 163 mRegion = aRegion; | |
| 164 mReset = true; | |
| 165 } | |
| 166 | |
| 167 } // namespace dom | |
| 168 } // namespace mozilla |
