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convert MOZ_OVERRIDE override
convert MOZ_FINAL final
120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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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#ifndef MOZILLA_DOMSVGSTRINGLIST_H__
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#define MOZILLA_DOMSVGSTRINGLIST_H__
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsSVGElement.h"
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#include "mozilla/Attributes.h"
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namespace mozilla {
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class ErrorResult;
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class SVGStringList;
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/**
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* Class DOMSVGStringList
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*
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* This class is used to create the DOM tearoff objects that wrap internal
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* SVGPathData objects.
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*
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* See the architecture comment in DOMSVGAnimatedLengthList.h first (that's
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* LENGTH list), then continue reading the remainder of this comment.
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*
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* The architecture of this class is similar to that of DOMSVGLengthList
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* except for two important aspects:
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*
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* First, since there is no nsIDOMSVGAnimatedStringList interface in SVG, we
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* have no parent DOMSVGAnimatedStringList (unlike DOMSVGLengthList which has
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* a parent DOMSVGAnimatedLengthList class). As a consequence, much of the
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* logic that would otherwise be in DOMSVGAnimatedStringList (and is in
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* DOMSVGAnimatedLengthList) is contained in this class.
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*
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* Second, since there is no nsIDOMSVGString interface in SVG, we have no
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* DOMSVGString items to maintain. As far as script is concerned, objects
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* of this class contain a list of strings, not a list of mutable objects
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* like the other SVG list types. As a result, unlike the other SVG list
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* types, this class does not create its items lazily on demand and store
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* them so it can return the same objects each time. It simply returns a new
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* string each time any given item is requested.
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*/
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class DOMSVGStringList final : public nsISupports
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, public nsWrapperCache
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{
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friend class AutoChangeStringListNotifier;
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMSVGStringList)
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nsSVGElement* GetParentObject() const
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{
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return mElement;
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}
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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uint32_t NumberOfItems() const;
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uint32_t Length() const;
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void Clear();
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void Initialize(const nsAString& aNewItem, nsAString& aRetval,
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ErrorResult& aRv);
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void GetItem(uint32_t aIndex, nsAString& aRetval, ErrorResult& aRv);
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void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aRetval);
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void InsertItemBefore(const nsAString& aNewItem, uint32_t aIndex,
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nsAString& aRetval, ErrorResult& aRv);
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void ReplaceItem(const nsAString& aNewItem, uint32_t aIndex,
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nsAString& aRetval, ErrorResult& aRv);
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void RemoveItem(uint32_t aIndex, nsAString& aRetval, ErrorResult& aRv);
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void AppendItem(const nsAString& aNewItem, nsAString& aRetval,
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ErrorResult& aRv);
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/**
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* Factory method to create and return a DOMSVGStringList wrapper
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* for a given internal SVGStringList object. The factory takes care
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* of caching the object that it returns so that the same object can be
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* returned for the given SVGStringList each time it is requested.
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* The cached object is only removed from the cache when it is destroyed due
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* to there being no more references to it. If that happens, any subsequent
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* call requesting the DOM wrapper for the SVGStringList will naturally
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* result in a new DOMSVGStringList being returned.
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*/
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static already_AddRefed<DOMSVGStringList>
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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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private:
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/**
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* Only our static GetDOMWrapper() factory method may create objects of our
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* type.
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*/
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DOMSVGStringList(nsSVGElement *aElement,
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bool aIsConditionalProcessingAttribute, uint8_t aAttrEnum)
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: mElement(aElement)
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, mAttrEnum(aAttrEnum)
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, mIsConditionalProcessingAttribute(aIsConditionalProcessingAttribute)
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{
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}
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~DOMSVGStringList();
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SVGStringList &InternalList() const;
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// Strong ref to our element to keep it alive.
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nsRefPtr<nsSVGElement> mElement;
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uint8_t mAttrEnum;
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bool mIsConditionalProcessingAttribute;
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};
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} // namespace mozilla
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#endif // MOZILLA_DOMSVGSTRINGLIST_H__
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