Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       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/. */
       6             : 
       7             : #include "mozilla/dom/SVGAnimatedTransformList.h"
       8             : #include "DOMSVGTransformList.h"
       9             : #include "nsSVGAnimatedTransformList.h"
      10             : #include "nsSVGAttrTearoffTable.h"
      11             : #include "mozilla/dom/SVGAnimatedTransformListBinding.h"
      12             : 
      13             : namespace mozilla {
      14             : namespace dom {
      15             : 
      16             : static
      17             :   nsSVGAttrTearoffTable<nsSVGAnimatedTransformList, SVGAnimatedTransformList>
      18           3 :   sSVGAnimatedTransformListTearoffTable;
      19             : 
      20           0 : NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(SVGAnimatedTransformList, mElement)
      21             : 
      22           0 : NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(SVGAnimatedTransformList, AddRef)
      23           0 : NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(SVGAnimatedTransformList, Release)
      24             : 
      25             : JSObject*
      26           0 : SVGAnimatedTransformList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
      27             : {
      28           0 :   return SVGAnimatedTransformListBinding::Wrap(aCx, this, aGivenProto);
      29             : }
      30             : 
      31             : //----------------------------------------------------------------------
      32             : already_AddRefed<DOMSVGTransformList>
      33           0 : SVGAnimatedTransformList::BaseVal()
      34             : {
      35           0 :   if (!mBaseVal) {
      36           0 :     mBaseVal = new DOMSVGTransformList(this, InternalAList().GetBaseValue());
      37             :   }
      38           0 :   RefPtr<DOMSVGTransformList> baseVal = mBaseVal;
      39           0 :   return baseVal.forget();
      40             : }
      41             : 
      42             : already_AddRefed<DOMSVGTransformList>
      43           0 : SVGAnimatedTransformList::AnimVal()
      44             : {
      45           0 :   if (!mAnimVal) {
      46           0 :     mAnimVal = new DOMSVGTransformList(this, InternalAList().GetAnimValue());
      47             :   }
      48           0 :   RefPtr<DOMSVGTransformList> animVal = mAnimVal;
      49           0 :   return animVal.forget();
      50             : }
      51             : 
      52             : /* static */ already_AddRefed<SVGAnimatedTransformList>
      53           0 : SVGAnimatedTransformList::GetDOMWrapper(nsSVGAnimatedTransformList *aList,
      54             :                                         nsSVGElement *aElement)
      55             : {
      56             :   RefPtr<SVGAnimatedTransformList> wrapper =
      57           0 :     sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
      58           0 :   if (!wrapper) {
      59           0 :     wrapper = new SVGAnimatedTransformList(aElement);
      60           0 :     sSVGAnimatedTransformListTearoffTable.AddTearoff(aList, wrapper);
      61             :   }
      62           0 :   return wrapper.forget();
      63             : }
      64             : 
      65             : /* static */ SVGAnimatedTransformList*
      66           7 : SVGAnimatedTransformList::GetDOMWrapperIfExists(
      67             :   nsSVGAnimatedTransformList *aList)
      68             : {
      69           7 :   return sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
      70             : }
      71             : 
      72           0 : SVGAnimatedTransformList::~SVGAnimatedTransformList()
      73             : {
      74             :   // Script no longer has any references to us, to our base/animVal objects, or
      75             :   // to any of their list items.
      76           0 :   sSVGAnimatedTransformListTearoffTable.RemoveTearoff(&InternalAList());
      77           0 : }
      78             : 
      79             : void
      80           0 : SVGAnimatedTransformList::InternalBaseValListWillChangeLengthTo(
      81             :   uint32_t aNewLength)
      82             : {
      83             :   // When the number of items in our internal counterpart's baseVal changes,
      84             :   // we MUST keep our baseVal in sync. If we don't, script will either see a
      85             :   // list that is too short and be unable to access indexes that should be
      86             :   // valid, or else, MUCH WORSE, script will see a list that is too long and be
      87             :   // able to access "items" at indexes that are out of bounds (read/write to
      88             :   // bad memory)!!
      89             : 
      90           0 :   RefPtr<SVGAnimatedTransformList> kungFuDeathGrip;
      91           0 :   if (mBaseVal) {
      92           0 :     if (aNewLength < mBaseVal->LengthNoFlush()) {
      93             :       // InternalListLengthWillChange might clear last reference to |this|.
      94             :       // Retain a temporary reference to keep from dying before returning.
      95           0 :       kungFuDeathGrip = this;
      96             :     }
      97           0 :     mBaseVal->InternalListLengthWillChange(aNewLength);
      98             :   }
      99             : 
     100             :   // If our attribute is not animating, then our animVal mirrors our baseVal
     101             :   // and we must sync its length too. (If our attribute is animating, then the
     102             :   // SMIL engine takes care of calling InternalAnimValListWillChangeLengthTo()
     103             :   // if necessary.)
     104             : 
     105           0 :   if (!IsAnimating()) {
     106           0 :     InternalAnimValListWillChangeLengthTo(aNewLength);
     107             :   }
     108           0 : }
     109             : 
     110             : void
     111           0 : SVGAnimatedTransformList::InternalAnimValListWillChangeLengthTo(
     112             :   uint32_t aNewLength)
     113             : {
     114           0 :   if (mAnimVal) {
     115           0 :     mAnimVal->InternalListLengthWillChange(aNewLength);
     116             :   }
     117           0 : }
     118             : 
     119             : bool
     120           0 : SVGAnimatedTransformList::IsAnimating() const
     121             : {
     122           0 :   return InternalAList().IsAnimating();
     123             : }
     124             : 
     125             : nsSVGAnimatedTransformList&
     126           0 : SVGAnimatedTransformList::InternalAList()
     127             : {
     128           0 :   return *mElement->GetAnimatedTransformList();
     129             : }
     130             : 
     131             : const nsSVGAnimatedTransformList&
     132           0 : SVGAnimatedTransformList::InternalAList() const
     133             : {
     134           0 :   return *mElement->GetAnimatedTransformList();
     135             : }
     136             : 
     137             : } // namespace dom
     138             : } // namespace mozilla