michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/HTMLTrackElement.h"
michael@0: #include "mozilla/dom/TextTrackCue.h"
michael@0: #include "mozilla/dom/TextTrackRegion.h"
michael@0: #include "nsComponentManagerUtils.h"
michael@0: #include "mozilla/ClearOnShutdown.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrackCue,
michael@0:                                    DOMEventTargetHelper,
michael@0:                                    mDocument,
michael@0:                                    mTrack,
michael@0:                                    mTrackElement,
michael@0:                                    mDisplayState,
michael@0:                                    mRegion)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(TextTrackCue, DOMEventTargetHelper)
michael@0: NS_IMPL_RELEASE_INHERITED(TextTrackCue, DOMEventTargetHelper)
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackCue)
michael@0: NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
michael@0: 
michael@0: StaticRefPtr<nsIWebVTTParserWrapper> TextTrackCue::sParserWrapper;
michael@0: 
michael@0: // Set cue setting defaults based on step 19 & seq.
michael@0: // in http://dev.w3.org/html5/webvtt/#parsing
michael@0: void
michael@0: TextTrackCue::SetDefaultCueSettings()
michael@0: {
michael@0:   mPosition = 50;
michael@0:   mPositionAlign = AlignSetting::Middle;
michael@0:   mSize = 100;
michael@0:   mPauseOnExit = false;
michael@0:   mSnapToLines = true;
michael@0:   mLineIsAutoKeyword = true;
michael@0:   mAlign = AlignSetting::Middle;
michael@0:   mLineAlign = AlignSetting::Start;
michael@0:   mVertical = DirectionSetting::_empty;
michael@0: }
michael@0: 
michael@0: TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow,
michael@0:                            double aStartTime,
michael@0:                            double aEndTime,
michael@0:                            const nsAString& aText,
michael@0:                            ErrorResult& aRv)
michael@0:   : DOMEventTargetHelper(aOwnerWindow)
michael@0:   , mText(aText)
michael@0:   , mStartTime(aStartTime)
michael@0:   , mEndTime(aEndTime)
michael@0:   , mReset(false)
michael@0: {
michael@0:   SetDefaultCueSettings();
michael@0:   MOZ_ASSERT(aOwnerWindow);
michael@0:   if (NS_FAILED(StashDocument())) {
michael@0:     aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
michael@0:   }
michael@0: }
michael@0: 
michael@0: TextTrackCue::TextTrackCue(nsPIDOMWindow* aOwnerWindow,
michael@0:                            double aStartTime,
michael@0:                            double aEndTime,
michael@0:                            const nsAString& aText,
michael@0:                            HTMLTrackElement* aTrackElement,
michael@0:                            ErrorResult& aRv)
michael@0:   : DOMEventTargetHelper(aOwnerWindow)
michael@0:   , mText(aText)
michael@0:   , mStartTime(aStartTime)
michael@0:   , mEndTime(aEndTime)
michael@0:   , mTrackElement(aTrackElement)
michael@0:   , mReset(false)
michael@0: {
michael@0:   SetDefaultCueSettings();
michael@0:   MOZ_ASSERT(aOwnerWindow);
michael@0:   if (NS_FAILED(StashDocument())) {
michael@0:     aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
michael@0:   }
michael@0: }
michael@0: 
michael@0: /** Save a reference to our creating document so we don't have to
michael@0:  *  keep getting it from our window.
michael@0:  */
michael@0: nsresult
michael@0: TextTrackCue::StashDocument()
michael@0: {
michael@0:   nsPIDOMWindow* window = GetOwner();
michael@0:   if (!window) {
michael@0:     return NS_ERROR_NO_INTERFACE;
michael@0:   }
michael@0:   mDocument = window->GetDoc();
michael@0:   if (!mDocument) {
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: already_AddRefed<DocumentFragment>
michael@0: TextTrackCue::GetCueAsHTML()
michael@0: {
michael@0:   // mDocument may be null during cycle collector shutdown.
michael@0:   // See bug 941701.
michael@0:   if (!mDocument) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   if (!sParserWrapper) {
michael@0:     nsresult rv;
michael@0:     nsCOMPtr<nsIWebVTTParserWrapper> parserWrapper =
michael@0:       do_CreateInstance(NS_WEBVTTPARSERWRAPPER_CONTRACTID, &rv);
michael@0:     if (NS_FAILED(rv)) {
michael@0:       return mDocument->CreateDocumentFragment();
michael@0:     }
michael@0:     sParserWrapper = parserWrapper;
michael@0:     ClearOnShutdown(&sParserWrapper);
michael@0:   }
michael@0: 
michael@0:   nsPIDOMWindow* window = mDocument->GetWindow();
michael@0:   if (!window) {
michael@0:     return mDocument->CreateDocumentFragment();
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDOMHTMLElement> div;
michael@0:   sParserWrapper->ConvertCueToDOMTree(window, this,
michael@0:                                       getter_AddRefs(div));
michael@0:   if (!div) {
michael@0:     return mDocument->CreateDocumentFragment();
michael@0:   }
michael@0:   nsRefPtr<DocumentFragment> docFrag = mDocument->CreateDocumentFragment();
michael@0:   nsCOMPtr<nsIDOMNode> throwAway;
michael@0:   docFrag->AppendChild(div, getter_AddRefs(throwAway));
michael@0: 
michael@0:   return docFrag.forget();
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackCue::SetTrackElement(HTMLTrackElement* aTrackElement)
michael@0: {
michael@0:   mTrackElement = aTrackElement;
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: TextTrackCue::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return VTTCueBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: TextTrackRegion*
michael@0: TextTrackCue::GetRegion()
michael@0: {
michael@0:   return mRegion;
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackCue::SetRegion(TextTrackRegion* aRegion)
michael@0: {
michael@0:   if (mRegion == aRegion) {
michael@0:     return;
michael@0:   }
michael@0:   mRegion = aRegion;
michael@0:   mReset = true;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla