зеркало из https://github.com/mozilla/gecko-dev.git
134 строки
4.2 KiB
C++
134 строки
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_a11y_xpcAccessibleDocument_h_
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#define mozilla_a11y_xpcAccessibleDocument_h_
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#include "nsIAccessibleDocument.h"
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#include "DocAccessible.h"
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#include "nsAccessibilityService.h"
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#include "xpcAccessibleApplication.h"
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#include "xpcAccessibleHyperText.h"
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namespace mozilla {
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namespace a11y {
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/**
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* XPCOM wrapper around DocAccessible class.
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*/
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class xpcAccessibleDocument : public xpcAccessibleHyperText,
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public nsIAccessibleDocument {
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public:
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explicit xpcAccessibleDocument(Accessible* aIntl)
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: xpcAccessibleHyperText(aIntl),
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mCache(kDefaultCacheLength),
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mRemote(aIntl->IsRemote()) {
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// XXX: Once there is a base doc class that both remote and local
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// accessibles inherit, we can add the type to the prototype and remove this
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// assert.
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MOZ_ASSERT(aIntl->IsDoc());
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}
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NS_DECL_ISUPPORTS_INHERITED
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// nsIAccessibleDocument
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NS_IMETHOD GetURL(nsAString& aURL) final;
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NS_IMETHOD GetTitle(nsAString& aTitle) final;
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NS_IMETHOD GetMimeType(nsAString& aType) final;
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NS_IMETHOD GetDocType(nsAString& aType) final;
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NS_IMETHOD GetDOMDocument(dom::Document** aDOMDocument) final;
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NS_IMETHOD GetWindow(mozIDOMWindowProxy** aDOMWindow) final;
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NS_IMETHOD GetParentDocument(nsIAccessibleDocument** aDocument) final;
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NS_IMETHOD GetChildDocumentCount(uint32_t* aCount) final;
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NS_IMETHOD GetChildDocumentAt(uint32_t aIndex,
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nsIAccessibleDocument** aDocument) final;
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NS_IMETHOD GetVirtualCursor(nsIAccessiblePivot** aVirtualCursor) final;
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/**
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* Return XPCOM wrapper for the internal accessible.
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*/
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xpcAccessibleGeneric* GetAccessible(Accessible* aAccessible);
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virtual void Shutdown() override;
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protected:
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virtual ~xpcAccessibleDocument() {}
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private:
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DocAccessible* Intl() {
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if (LocalAccessible* acc = mIntl->AsLocal()) {
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return acc->AsDoc();
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}
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return nullptr;
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}
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void NotifyOfShutdown(Accessible* aAccessible) {
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xpcAccessibleGeneric* xpcAcc = mCache.Get(aAccessible);
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if (xpcAcc) {
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xpcAcc->Shutdown();
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}
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mCache.Remove(aAccessible);
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if (mCache.Count() == 0 && mRefCnt == 1) {
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if (mIntl->IsLocal()) {
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GetAccService()->RemoveFromXPCDocumentCache(mIntl->AsLocal()->AsDoc());
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} else {
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GetAccService()->RemoveFromRemoteXPCDocumentCache(
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mIntl->AsRemote()->AsDoc());
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}
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}
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}
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friend class DocManager;
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friend class DocAccessible;
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friend class RemoteAccessible;
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friend class RemoteAccessibleBase<RemoteAccessible>;
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friend class xpcAccessibleGeneric;
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xpcAccessibleDocument(const xpcAccessibleDocument&) = delete;
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xpcAccessibleDocument& operator=(const xpcAccessibleDocument&) = delete;
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nsTHashMap<nsPtrHashKey<const void>, xpcAccessibleGeneric*> mCache;
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bool mRemote;
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};
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inline xpcAccessibleGeneric* ToXPC(Accessible* aAccessible) {
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if (!aAccessible) return nullptr;
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if (aAccessible->IsApplication()) return XPCApplicationAcc();
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xpcAccessibleDocument* xpcDoc =
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aAccessible->IsLocal()
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? GetAccService()->GetXPCDocument(aAccessible->AsLocal()->Document())
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: GetAccService()->GetXPCDocument(
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aAccessible->AsRemote()->Document());
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return xpcDoc ? xpcDoc->GetAccessible(aAccessible) : nullptr;
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}
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inline xpcAccessibleHyperText* ToXPCText(HyperTextAccessible* aAccessible) {
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if (!aAccessible) return nullptr;
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xpcAccessibleDocument* xpcDoc =
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GetAccService()->GetXPCDocument(aAccessible->Document());
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return static_cast<xpcAccessibleHyperText*>(
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xpcDoc->GetAccessible(aAccessible));
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}
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inline xpcAccessibleDocument* ToXPCDocument(DocAccessible* aAccessible) {
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return GetAccService()->GetXPCDocument(aAccessible);
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}
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inline xpcAccessibleDocument* ToXPCDocument(DocAccessibleParent* aAccessible) {
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return GetAccService()->GetXPCDocument(aAccessible);
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}
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} // namespace a11y
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} // namespace mozilla
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#endif
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