87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISVGPoint.h"
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#include "DOMSVGPointList.h"
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#include "SVGPoint.h"
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#include "nsSVGElement.h"
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#include "nsError.h"
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#include "mozilla/dom/SVGPointBinding.h"
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// See the architecture comment in DOMSVGPointList.h.
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using namespace mozilla;
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// We could use NS_IMPL_CYCLE_COLLECTION(, except that in Unlink() we need to
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// clear our list's weak ref to us to be safe. (The other option would be to
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// not unlink and rely on the breaking of the other edges in the cycle, as
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// NS_SVG_VAL_IMPL_CYCLE_COLLECTION does.)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsISVGPoint)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsISVGPoint)
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// We may not belong to a list, so we must null check tmp->mList.
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if (tmp->mList) {
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tmp->mList->mItems[tmp->mListIndex] = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mList)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsISVGPoint)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsISVGPoint)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsISVGPoint)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsISVGPoint)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsISVGPoint)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISVGPoint)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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void
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nsISVGPoint::InsertingIntoList(DOMSVGPointList *aList,
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uint32_t aListIndex,
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bool aIsAnimValItem)
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{
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MOZ_ASSERT(!HasOwner(), "Inserting item that already has an owner");
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mList = aList;
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mListIndex = aListIndex;
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mIsReadonly = false;
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mIsAnimValItem = aIsAnimValItem;
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MOZ_ASSERT(IndexIsValid(), "Bad index for DOMSVGPoint!");
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}
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void
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nsISVGPoint::RemovingFromList()
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{
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mPt = InternalItem();
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mList = nullptr;
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MOZ_ASSERT(!mIsReadonly, "mIsReadonly set for list");
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mIsAnimValItem = false;
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}
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SVGPoint&
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nsISVGPoint::InternalItem()
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{
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return mList->InternalList().mItems[mListIndex];
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}
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#ifdef DEBUG
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bool
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nsISVGPoint::IndexIsValid()
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{
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return mListIndex < mList->InternalList().Length();
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}
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#endif
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