gecko-dev/accessible/xpcom/xpcAccessibleDocument.cpp

212 строки
5.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "xpcAccessibleDocument.h"
#include "xpcAccessibleImage.h"
#include "xpcAccessibleTable.h"
#include "xpcAccessibleTableCell.h"
#include "DocAccessible-inl.h"
#include "nsIDOMDocument.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// nsISupports and cycle collection
NS_IMPL_CYCLE_COLLECTION_CLASS(xpcAccessibleDocument)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(xpcAccessibleDocument,
xpcAccessibleGeneric)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCache)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(xpcAccessibleDocument,
xpcAccessibleGeneric)
tmp->mCache.Clear();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(xpcAccessibleDocument)
NS_INTERFACE_MAP_ENTRY(nsIAccessibleDocument)
NS_INTERFACE_MAP_END_INHERITING(xpcAccessibleHyperText)
NS_IMPL_ADDREF_INHERITED(xpcAccessibleDocument, xpcAccessibleHyperText)
NS_IMPL_RELEASE_INHERITED(xpcAccessibleDocument, xpcAccessibleHyperText)
////////////////////////////////////////////////////////////////////////////////
// nsIAccessibleDocument
NS_IMETHODIMP
xpcAccessibleDocument::GetURL(nsAString& aURL)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->URL(aURL);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetTitle(nsAString& aTitle)
{
if (!Intl())
return NS_ERROR_FAILURE;
nsAutoString title;
Intl()->Title(title);
aTitle = title;
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetMimeType(nsAString& aType)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->MimeType(aType);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetDocType(nsAString& aType)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->DocType(aType);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetDOMDocument(nsIDOMDocument** aDOMDocument)
{
NS_ENSURE_ARG_POINTER(aDOMDocument);
*aDOMDocument = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
if (Intl()->DocumentNode())
CallQueryInterface(Intl()->DocumentNode(), aDOMDocument);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetWindow(nsIDOMWindow** aDOMWindow)
{
NS_ENSURE_ARG_POINTER(aDOMWindow);
*aDOMWindow = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
NS_IF_ADDREF(*aDOMWindow = Intl()->DocumentNode()->GetWindow());
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetParentDocument(nsIAccessibleDocument** aDocument)
{
NS_ENSURE_ARG_POINTER(aDocument);
*aDocument = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
NS_IF_ADDREF(*aDocument = ToXPCDocument(Intl()->ParentDocument()));
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetChildDocumentCount(uint32_t* aCount)
{
NS_ENSURE_ARG_POINTER(aCount);
*aCount = 0;
if (!Intl())
return NS_ERROR_FAILURE;
*aCount = Intl()->ChildDocumentCount();
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetChildDocumentAt(uint32_t aIndex,
nsIAccessibleDocument** aDocument)
{
NS_ENSURE_ARG_POINTER(aDocument);
*aDocument = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
NS_IF_ADDREF(*aDocument = ToXPCDocument(Intl()->GetChildDocumentAt(aIndex)));
return *aDocument ? NS_OK : NS_ERROR_INVALID_ARG;
}
NS_IMETHODIMP
xpcAccessibleDocument::GetVirtualCursor(nsIAccessiblePivot** aVirtualCursor)
{
NS_ENSURE_ARG_POINTER(aVirtualCursor);
*aVirtualCursor = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
NS_ADDREF(*aVirtualCursor = Intl()->VirtualCursor());
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// xpcAccessibleDocument
xpcAccessibleGeneric*
xpcAccessibleDocument::GetAccessible(Accessible* aAccessible)
{
if (ToXPCDocument(aAccessible->Document()) != this) {
NS_ERROR("This XPCOM document is not related with given internal accessible!");
return nullptr;
}
if (aAccessible->IsDoc())
return this;
xpcAccessibleGeneric* xpcAcc = mCache.GetWeak(aAccessible);
if (xpcAcc)
return xpcAcc;
if (aAccessible->IsImage())
xpcAcc = new xpcAccessibleImage(aAccessible);
else if (aAccessible->IsTable())
xpcAcc = new xpcAccessibleTable(aAccessible);
else if (aAccessible->IsTableCell())
xpcAcc = new xpcAccessibleTableCell(aAccessible);
else if (aAccessible->IsHyperText())
xpcAcc = new xpcAccessibleHyperText(aAccessible);
else
xpcAcc = new xpcAccessibleGeneric(aAccessible);
mCache.Put(aAccessible, xpcAcc);
return xpcAcc;
}
static PLDHashOperator
ShutdownAndRemove(const Accessible* aKey, nsRefPtr<xpcAccessibleGeneric>& aValue,
void* aUnused)
{
aValue->Shutdown();
return PL_DHASH_REMOVE;
}
void
xpcAccessibleDocument::Shutdown()
{
mCache.Enumerate(ShutdownAndRemove, nullptr);
xpcAccessibleGeneric::Shutdown();
}