content/media/TextTrackCue.cpp@6474c204b198 (annotated)
content/media/TextTrackCue.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "mozilla/dom/HTMLTrackElement.h" |
| michael@0 | 7 | #include "mozilla/dom/TextTrackCue.h" |
| michael@0 | 8 | #include "mozilla/dom/TextTrackRegion.h" |
| michael@0 | 9 | #include "nsComponentManagerUtils.h" |
| michael@0 | 10 | #include "mozilla/ClearOnShutdown.h" |
| michael@0 | 11 | |
| michael@0 | 12 | namespace mozilla { |
| michael@0 | 13 | namespace dom { |
| michael@0 | 14 | |
| michael@0 | 15 | NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrackCue, |
| michael@0 | 16 | DOMEventTargetHelper, |
| michael@0 | 17 | mDocument, |
| michael@0 | 18 | mTrack, |
| michael@0 | 19 | mTrackElement, |
| michael@0 | 20 | mDisplayState, |
| michael@0 | 21 | mRegion) |
| michael@0 | 22 | |
| michael@0 | 23 | NS_IMPL_ADDREF_INHERITED(TextTrackCue, DOMEventTargetHelper) |
| michael@0 | 24 | NS_IMPL_RELEASE_INHERITED(TextTrackCue, DOMEventTargetHelper) |
| michael@0 | 25 | NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackCue) |
| michael@0 | 26 | NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper) |
| michael@0 | 27 | |
| michael@0 | 28 | StaticRefPtr<nsIWebVTTParserWrapper> TextTrackCue::sParserWrapper; |
| michael@0 | 29 | |
| michael@0 | 30 | // Set cue setting defaults based on step 19 & seq. |
| michael@0 | 31 | // in http://dev.w3.org/html5/webvtt/#parsing |
| michael@0 | 32 | void |
| michael@0 | 33 | TextTrackCue::SetDefaultCueSettings() |
| michael@0 | 34 | { |
| michael@0 | 35 | mPosition = 50; |
| michael@0 | 36 | mPositionAlign = AlignSetting::Middle; |
| michael@0 | 37 | mSize = 100; |
| michael@0 | 38 | mPauseOnExit = false; |
| michael@0 | 39 | mSnapToLines = true; |
| michael@0 | 40 | mLineIsAutoKeyword = true; |
| michael@0 | 41 | mAlign = AlignSetting::Middle; |
| michael@0 | 42 | mLineAlign = AlignSetting::Start; |
| michael@0 | 43 | mVertical = DirectionSetting::_empty; |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow, |
| michael@0 | 47 | double aStartTime, |
| michael@0 | 48 | double aEndTime, |
| michael@0 | 49 | const nsAString& aText, |
| michael@0 | 50 | ErrorResult& aRv) |
| michael@0 | 51 | : DOMEventTargetHelper(aOwnerWindow) |
| michael@0 | 52 | , mText(aText) |
| michael@0 | 53 | , mStartTime(aStartTime) |
| michael@0 | 54 | , mEndTime(aEndTime) |
| michael@0 | 55 | , mReset(false) |
| michael@0 | 56 | { |
| michael@0 | 57 | SetDefaultCueSettings(); |
| michael@0 | 58 | MOZ_ASSERT(aOwnerWindow); |
| michael@0 | 59 | if (NS_FAILED(StashDocument())) { |
| michael@0 | 60 | aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); |
| michael@0 | 61 | } |
| michael@0 | 62 | } |
| michael@0 | 63 | |
| michael@0 | 64 | TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow, |
| michael@0 | 65 | double aStartTime, |
| michael@0 | 66 | double aEndTime, |
| michael@0 | 67 | const nsAString& aText, |
| michael@0 | 68 | HTMLTrackElement* aTrackElement, |
| michael@0 | 69 | ErrorResult& aRv) |
| michael@0 | 70 | : DOMEventTargetHelper(aOwnerWindow) |
| michael@0 | 71 | , mText(aText) |
| michael@0 | 72 | , mStartTime(aStartTime) |
| michael@0 | 73 | , mEndTime(aEndTime) |
| michael@0 | 74 | , mTrackElement(aTrackElement) |
| michael@0 | 75 | , mReset(false) |
| michael@0 | 76 | { |
| michael@0 | 77 | SetDefaultCueSettings(); |
| michael@0 | 78 | MOZ_ASSERT(aOwnerWindow); |
| michael@0 | 79 | if (NS_FAILED(StashDocument())) { |
| michael@0 | 80 | aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); |
| michael@0 | 81 | } |
| michael@0 | 82 | } |
| michael@0 | 83 | |
| michael@0 | 84 | /** Save a reference to our creating document so we don't have to |
| michael@0 | 85 | * keep getting it from our window. |
| michael@0 | 86 | */ |
| michael@0 | 87 | nsresult |
| michael@0 | 88 | TextTrackCue::StashDocument() |
| michael@0 | 89 | { |
| michael@0 | 90 | nsPIDOMWindow* window = GetOwner(); |
| michael@0 | 91 | if (!window) { |
| michael@0 | 92 | return NS_ERROR_NO_INTERFACE; |
| michael@0 | 93 | } |
| michael@0 | 94 | mDocument = window->GetDoc(); |
| michael@0 | 95 | if (!mDocument) { |
| michael@0 | 96 | return NS_ERROR_NOT_AVAILABLE; |
| michael@0 | 97 | } |
| michael@0 | 98 | return NS_OK; |
| michael@0 | 99 | } |
| michael@0 | 100 | |
| michael@0 | 101 | already_AddRefed<DocumentFragment> |
| michael@0 | 102 | TextTrackCue::GetCueAsHTML() |
| michael@0 | 103 | { |
| michael@0 | 104 | // mDocument may be null during cycle collector shutdown. |
| michael@0 | 105 | // See bug 941701. |
| michael@0 | 106 | if (!mDocument) { |
| michael@0 | 107 | return nullptr; |
| michael@0 | 108 | } |
| michael@0 | 109 | |
| michael@0 | 110 | if (!sParserWrapper) { |
| michael@0 | 111 | nsresult rv; |
| michael@0 | 112 | nsCOMPtr<nsIWebVTTParserWrapper> parserWrapper = |
| michael@0 | 113 | do_CreateInstance(NS_WEBVTTPARSERWRAPPER_CONTRACTID, &rv); |
| michael@0 | 114 | if (NS_FAILED(rv)) { |
| michael@0 | 115 | return mDocument->CreateDocumentFragment(); |
| michael@0 | 116 | } |
| michael@0 | 117 | sParserWrapper = parserWrapper; |
| michael@0 | 118 | ClearOnShutdown(&sParserWrapper); |
| michael@0 | 119 | } |
| michael@0 | 120 | |
| michael@0 | 121 | nsPIDOMWindow* window = mDocument->GetWindow(); |
| michael@0 | 122 | if (!window) { |
| michael@0 | 123 | return mDocument->CreateDocumentFragment(); |
| michael@0 | 124 | } |
| michael@0 | 125 | |
| michael@0 | 126 | nsCOMPtr<nsIDOMHTMLElement> div; |
| michael@0 | 127 | sParserWrapper->ConvertCueToDOMTree(window, this, |
| michael@0 | 128 | getter_AddRefs(div)); |
| michael@0 | 129 | if (!div) { |
| michael@0 | 130 | return mDocument->CreateDocumentFragment(); |
| michael@0 | 131 | } |
| michael@0 | 132 | nsRefPtr<DocumentFragment> docFrag = mDocument->CreateDocumentFragment(); |
| michael@0 | 133 | nsCOMPtr<nsIDOMNode> throwAway; |
| michael@0 | 134 | docFrag->AppendChild(div, getter_AddRefs(throwAway)); |
| michael@0 | 135 | |
| michael@0 | 136 | return docFrag.forget(); |
| michael@0 | 137 | } |
| michael@0 | 138 | |
| michael@0 | 139 | void |
| michael@0 | 140 | TextTrackCue::SetTrackElement(HTMLTrackElement* aTrackElement) |
| michael@0 | 141 | { |
| michael@0 | 142 | mTrackElement = aTrackElement; |
| michael@0 | 143 | } |
| michael@0 | 144 | |
| michael@0 | 145 | JSObject* |
| michael@0 | 146 | TextTrackCue::WrapObject(JSContext* aCx) |
| michael@0 | 147 | { |
| michael@0 | 148 | return VTTCueBinding::Wrap(aCx, this); |
| michael@0 | 149 | } |
| michael@0 | 150 | |
| michael@0 | 151 | TextTrackRegion* |
| michael@0 | 152 | TextTrackCue::GetRegion() |
| michael@0 | 153 | { |
| michael@0 | 154 | return mRegion; |
| michael@0 | 155 | } |
| michael@0 | 156 | |
| michael@0 | 157 | void |
| michael@0 | 158 | TextTrackCue::SetRegion(TextTrackRegion* aRegion) |
| michael@0 | 159 | { |
| michael@0 | 160 | if (mRegion == aRegion) { |
| michael@0 | 161 | return; |
| michael@0 | 162 | } |
| michael@0 | 163 | mRegion = aRegion; |
| michael@0 | 164 | mReset = true; |
| michael@0 | 165 | } |
| michael@0 | 166 | |
| michael@0 | 167 | } // namespace dom |
| michael@0 | 168 | } // namespace mozilla |
