mirror of
https://github.com/classilla/tenfourfox.git
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224 lines
6.2 KiB
C++
224 lines
6.2 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "DOMSVGStringList.h"
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#include "mozilla/dom/SVGStringListBinding.h"
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#include "mozilla/dom/SVGTests.h"
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#include "nsError.h"
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#include "nsCOMPtr.h"
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#include "nsSVGAttrTearoffTable.h"
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#include "nsQueryObject.h"
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#include <algorithm>
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// See the architecture comment in this file's header.
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namespace mozilla {
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using namespace dom;
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static inline
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nsSVGAttrTearoffTable<SVGStringList, DOMSVGStringList>&
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SVGStringListTearoffTable()
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{
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static nsSVGAttrTearoffTable<SVGStringList, DOMSVGStringList>
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sSVGStringListTearoffTable;
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return sSVGStringListTearoffTable;
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}
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NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGStringList, mElement)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGStringList)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGStringList)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGStringList)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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//----------------------------------------------------------------------
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// Helper class: AutoChangeStringListNotifier
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// Stack-based helper class to pair calls to WillChangeStringListList and
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// DidChangeStringListList.
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class MOZ_RAII AutoChangeStringListNotifier
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{
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public:
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explicit AutoChangeStringListNotifier(DOMSVGStringList* aStringList MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: mStringList(aStringList)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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MOZ_ASSERT(mStringList, "Expecting non-null stringList");
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mEmptyOrOldValue =
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mStringList->mElement->WillChangeStringList(mStringList->mIsConditionalProcessingAttribute,
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mStringList->mAttrEnum);
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}
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~AutoChangeStringListNotifier()
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{
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mStringList->mElement->DidChangeStringList(mStringList->mIsConditionalProcessingAttribute,
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mStringList->mAttrEnum, mEmptyOrOldValue);
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}
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private:
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DOMSVGStringList* const mStringList;
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nsAttrValue mEmptyOrOldValue;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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/* static */ already_AddRefed<DOMSVGStringList>
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DOMSVGStringList::GetDOMWrapper(SVGStringList *aList,
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nsSVGElement *aElement,
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bool aIsConditionalProcessingAttribute,
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uint8_t aAttrEnum)
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{
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RefPtr<DOMSVGStringList> wrapper =
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SVGStringListTearoffTable().GetTearoff(aList);
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if (!wrapper) {
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wrapper = new DOMSVGStringList(aElement,
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aIsConditionalProcessingAttribute,
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aAttrEnum);
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SVGStringListTearoffTable().AddTearoff(aList, wrapper);
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}
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return wrapper.forget();
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}
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DOMSVGStringList::~DOMSVGStringList()
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{
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// Script no longer has any references to us.
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SVGStringListTearoffTable().RemoveTearoff(&InternalList());
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}
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/* virtual */ JSObject*
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DOMSVGStringList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGStringListBinding::Wrap(aCx, this, aGivenProto);
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}
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// ----------------------------------------------------------------------------
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// SVGStringList implementation:
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uint32_t
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DOMSVGStringList::NumberOfItems() const
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{
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return InternalList().Length();
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}
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uint32_t
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DOMSVGStringList::Length() const
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{
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return NumberOfItems();
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}
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void
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DOMSVGStringList::Clear()
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{
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if (InternalList().IsExplicitlySet()) {
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AutoChangeStringListNotifier notifier(this);
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InternalList().Clear();
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}
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}
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void
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DOMSVGStringList::Initialize(const nsAString& aNewItem, nsAString& aRetval,
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ErrorResult& aRv)
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{
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if (InternalList().IsExplicitlySet()) {
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InternalList().Clear();
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}
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InsertItemBefore(aNewItem, 0, aRetval, aRv);
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}
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void
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DOMSVGStringList::GetItem(uint32_t aIndex, nsAString& aRetval, ErrorResult& aRv)
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{
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bool found;
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IndexedGetter(aIndex, found, aRetval);
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if (!found) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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}
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}
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void
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DOMSVGStringList::IndexedGetter(uint32_t aIndex, bool& aFound,
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nsAString& aRetval)
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{
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aFound = aIndex < InternalList().Length();
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if (aFound) {
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aRetval = InternalList()[aIndex];
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}
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}
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void
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DOMSVGStringList::InsertItemBefore(const nsAString& aNewItem, uint32_t aIndex,
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nsAString& aRetval, ErrorResult& aRv)
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{
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if (aNewItem.IsEmpty()) {
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aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
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return;
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}
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aIndex = std::min(aIndex, InternalList().Length());
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// Ensure we have enough memory so we can avoid complex error handling below:
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if (!InternalList().SetCapacity(InternalList().Length() + 1)) {
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aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
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return;
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}
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AutoChangeStringListNotifier notifier(this);
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InternalList().InsertItem(aIndex, aNewItem);
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aRetval = aNewItem;
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}
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void
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DOMSVGStringList::ReplaceItem(const nsAString& aNewItem, uint32_t aIndex,
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nsAString& aRetval, ErrorResult& aRv)
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{
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if (aNewItem.IsEmpty()) {
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aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
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return;
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}
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if (aIndex >= InternalList().Length()) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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return;
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}
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aRetval = InternalList()[aIndex];
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AutoChangeStringListNotifier notifier(this);
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InternalList().ReplaceItem(aIndex, aNewItem);
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}
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void
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DOMSVGStringList::RemoveItem(uint32_t aIndex, nsAString& aRetval,
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ErrorResult& aRv)
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{
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if (aIndex >= InternalList().Length()) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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return;
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}
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AutoChangeStringListNotifier notifier(this);
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InternalList().RemoveItem(aIndex);
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}
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void
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DOMSVGStringList::AppendItem(const nsAString& aNewItem, nsAString& aRetval,
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ErrorResult& aRv)
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{
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InsertItemBefore(aNewItem, InternalList().Length(), aRetval, aRv);
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}
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SVGStringList &
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DOMSVGStringList::InternalList() const
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{
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if (mIsConditionalProcessingAttribute) {
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nsCOMPtr<dom::SVGTests> tests = do_QueryObject(mElement.get());
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return tests->mStringListAttributes[mAttrEnum];
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}
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return mElement->GetStringListInfo().mStringLists[mAttrEnum];
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}
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} // namespace mozilla
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