зеркало из https://github.com/mozilla/gecko-dev.git
222 строки
6.3 KiB
C++
222 строки
6.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set tw=80 expandtab softtabstop=2 ts=2 sw=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 HTMLPropertiesCollection_h_
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#define HTMLPropertiesCollection_h_
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/DOMStringList.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsAutoPtr.h"
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#include "nsCOMArray.h"
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#include "nsIMutationObserver.h"
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#include "nsStubMutationObserver.h"
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#include "nsBaseHashtable.h"
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#include "nsINodeList.h"
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#include "nsIHTMLCollection.h"
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#include "nsHashKeys.h"
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#include "nsRefPtrHashtable.h"
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#include "nsGenericHTMLElement.h"
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class nsIDocument;
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class nsINode;
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namespace mozilla {
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namespace dom {
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class HTMLPropertiesCollection;
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class PropertyNodeList;
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class Element;
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class PropertyStringList : public DOMStringList
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{
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public:
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explicit PropertyStringList(HTMLPropertiesCollection* aCollection);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PropertyStringList, DOMStringList)
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bool ContainsInternal(const nsAString& aString);
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protected:
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virtual ~PropertyStringList();
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virtual void EnsureFresh() override;
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nsRefPtr<HTMLPropertiesCollection> mCollection;
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};
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class HTMLPropertiesCollection final : public nsIHTMLCollection,
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public nsStubMutationObserver,
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public nsWrapperCache
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{
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friend class PropertyNodeList;
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friend class PropertyStringList;
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public:
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explicit HTMLPropertiesCollection(nsGenericHTMLElement* aRoot);
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// nsWrapperCache
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using nsWrapperCache::GetWrapperPreserveColor;
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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protected:
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virtual ~HTMLPropertiesCollection();
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virtual JSObject* GetWrapperPreserveColorInternal() override
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{
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return nsWrapperCache::GetWrapperPreserveColor();
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}
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public:
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virtual Element* GetElementAt(uint32_t aIndex) override;
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void SetDocument(nsIDocument* aDocument);
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nsINode* GetParentObject() override;
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virtual Element*
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GetFirstNamedElement(const nsAString& aName, bool& aFound) override
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{
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// HTMLPropertiesCollection.namedItem and the named getter call the
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// NamedItem that returns a PropertyNodeList, calling
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// HTMLCollection.namedItem doesn't make sense so this returns null.
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aFound = false;
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return nullptr;
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}
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PropertyNodeList* NamedItem(const nsAString& aName);
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PropertyNodeList* NamedGetter(const nsAString& aName, bool& aFound)
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{
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aFound = IsSupportedNamedProperty(aName);
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return aFound ? NamedItem(aName) : nullptr;
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}
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bool NameIsEnumerable(const nsAString& aName)
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{
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return true;
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}
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DOMStringList* Names()
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{
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EnsureFresh();
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return mNames;
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}
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virtual void GetSupportedNames(unsigned,
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nsTArray<nsString>& aNames) override;
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NS_DECL_NSIDOMHTMLCOLLECTION
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(HTMLPropertiesCollection,
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nsIHTMLCollection)
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protected:
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// Make sure this collection is up to date, in case the DOM has been mutated.
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void EnsureFresh();
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// Crawl the properties of mRoot, following any itemRefs it may have
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void CrawlProperties();
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// Crawl startNode and its descendants, looking for items
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void CrawlSubtree(Element* startNode);
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bool IsSupportedNamedProperty(const nsAString& aName)
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{
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EnsureFresh();
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return mNames->ContainsInternal(aName);
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}
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// the items that make up this collection
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nsTArray<nsRefPtr<nsGenericHTMLElement> > mProperties;
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// the itemprop attribute of the properties
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nsRefPtr<PropertyStringList> mNames;
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// The cached PropertyNodeLists that are NamedItems of this collection
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nsRefPtrHashtable<nsStringHashKey, PropertyNodeList> mNamedItemEntries;
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// The element this collection is rooted at
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nsRefPtr<nsGenericHTMLElement> mRoot;
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// The document mRoot is in, if any
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nsCOMPtr<nsIDocument> mDoc;
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// True if there have been DOM modifications since the last EnsureFresh call.
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bool mIsDirty;
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};
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class PropertyNodeList final : public nsINodeList,
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public nsStubMutationObserver
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{
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public:
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PropertyNodeList(HTMLPropertiesCollection* aCollection,
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nsIContent* aRoot, const nsAString& aName);
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virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
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void SetDocument(nsIDocument* aDocument);
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void GetValues(JSContext* aCx, nsTArray<JS::Value >& aResult,
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ErrorResult& aError);
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virtual nsIContent* Item(uint32_t aIndex) override;
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(PropertyNodeList,
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nsINodeList)
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NS_DECL_NSIDOMNODELIST
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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// nsINodeList interface
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virtual int32_t IndexOf(nsIContent* aContent) override;
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virtual nsINode* GetParentObject() override;
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void AppendElement(nsGenericHTMLElement* aElement)
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{
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mElements.AppendElement(aElement);
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}
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void Clear()
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{
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mElements.Clear();
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}
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void SetDirty() { mIsDirty = true; }
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protected:
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virtual ~PropertyNodeList();
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// Make sure this list is up to date, in case the DOM has been mutated.
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void EnsureFresh();
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// the the name that this list corresponds to
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nsString mName;
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// the document mParent is in, if any
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nsCOMPtr<nsIDocument> mDoc;
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// the collection that this list is a named item of
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nsRefPtr<HTMLPropertiesCollection> mCollection;
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// the node this list is rooted at
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nsCOMPtr<nsINode> mParent;
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// the properties that make up this list
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nsTArray<nsRefPtr<nsGenericHTMLElement> > mElements;
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// True if there have been DOM modifications since the last EnsureFresh call.
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bool mIsDirty;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // HTMLPropertiesCollection_h_
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