mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
717 lines
20 KiB
C++
717 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
#ifndef mozilla_a11y_DocAccessible_h__
|
|
#define mozilla_a11y_DocAccessible_h__
|
|
|
|
#include "nsIAccessiblePivot.h"
|
|
|
|
#include "AccEvent.h"
|
|
#include "HyperTextAccessibleWrap.h"
|
|
|
|
#include "nsClassHashtable.h"
|
|
#include "nsDataHashtable.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIDocumentObserver.h"
|
|
#include "nsIEditor.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIScrollPositionListener.h"
|
|
#include "nsITimer.h"
|
|
#include "nsIWeakReference.h"
|
|
|
|
class nsAccessiblePivot;
|
|
|
|
const uint32_t kDefaultCacheLength = 128;
|
|
|
|
namespace mozilla {
|
|
namespace a11y {
|
|
|
|
class DocManager;
|
|
class NotificationController;
|
|
class DocAccessibleChild;
|
|
class RelatedAccIterator;
|
|
template<class Class, class ... Args>
|
|
class TNotification;
|
|
|
|
class DocAccessible : public HyperTextAccessibleWrap,
|
|
public nsIDocumentObserver,
|
|
public nsIObserver,
|
|
public nsIScrollPositionListener,
|
|
public nsSupportsWeakReference,
|
|
public nsIAccessiblePivotObserver
|
|
{
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DocAccessible, Accessible)
|
|
|
|
NS_DECL_NSIOBSERVER
|
|
NS_DECL_NSIACCESSIBLEPIVOTOBSERVER
|
|
|
|
public:
|
|
|
|
DocAccessible(nsIDocument* aDocument, nsIContent* aRootContent,
|
|
nsIPresShell* aPresShell);
|
|
|
|
// nsIScrollPositionListener
|
|
virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) override {}
|
|
virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) override;
|
|
|
|
// nsIDocumentObserver
|
|
NS_DECL_NSIDOCUMENTOBSERVER
|
|
|
|
// Accessible
|
|
virtual void Init();
|
|
virtual void Shutdown() override;
|
|
virtual nsIFrame* GetFrame() const override;
|
|
virtual nsINode* GetNode() const override { return mDocumentNode; }
|
|
nsIDocument* DocumentNode() const { return mDocumentNode; }
|
|
|
|
virtual mozilla::a11y::ENameValueFlag Name(nsString& aName) override;
|
|
virtual void Description(nsString& aDescription) override;
|
|
virtual Accessible* FocusedChild() override;
|
|
virtual mozilla::a11y::role NativeRole() override;
|
|
virtual uint64_t NativeState() override;
|
|
virtual uint64_t NativeInteractiveState() const override;
|
|
virtual bool NativelyUnavailable() const override;
|
|
virtual void ApplyARIAState(uint64_t* aState) const override;
|
|
virtual already_AddRefed<nsIPersistentProperties> Attributes() override;
|
|
|
|
virtual void TakeFocus() override;
|
|
|
|
#ifdef A11Y_LOG
|
|
virtual nsresult HandleAccEvent(AccEvent* aEvent) override;
|
|
#endif
|
|
|
|
virtual nsRect RelativeBounds(nsIFrame** aRelativeFrame) const override;
|
|
|
|
// HyperTextAccessible
|
|
virtual already_AddRefed<nsIEditor> GetEditor() const override;
|
|
|
|
// DocAccessible
|
|
|
|
/**
|
|
* Return document URL.
|
|
*/
|
|
void URL(nsAString& aURL) const;
|
|
|
|
/**
|
|
* Return DOM document title.
|
|
*/
|
|
void Title(nsString& aTitle) const { mDocumentNode->GetTitle(aTitle); }
|
|
|
|
/**
|
|
* Return DOM document mime type.
|
|
*/
|
|
void MimeType(nsAString& aType) const { mDocumentNode->GetContentType(aType); }
|
|
|
|
/**
|
|
* Return DOM document type.
|
|
*/
|
|
void DocType(nsAString& aType) const;
|
|
|
|
/**
|
|
* Return virtual cursor associated with the document.
|
|
*/
|
|
nsIAccessiblePivot* VirtualCursor();
|
|
|
|
/**
|
|
* Return presentation shell for this document accessible.
|
|
*/
|
|
nsIPresShell* PresShell() const { return mPresShell; }
|
|
|
|
/**
|
|
* Return the presentation shell's context.
|
|
*/
|
|
nsPresContext* PresContext() const { return mPresShell->GetPresContext(); }
|
|
|
|
/**
|
|
* Return true if associated DOM document was loaded and isn't unloading.
|
|
*/
|
|
bool IsContentLoaded() const
|
|
{
|
|
// eDOMLoaded flag check is used for error pages as workaround to make this
|
|
// method return correct result since error pages do not receive 'pageshow'
|
|
// event and as consequence nsIDocument::IsShowing() returns false.
|
|
return mDocumentNode && mDocumentNode->IsVisible() &&
|
|
(mDocumentNode->IsShowing() || HasLoadState(eDOMLoaded));
|
|
}
|
|
|
|
/**
|
|
* Document load states.
|
|
*/
|
|
enum LoadState {
|
|
// initial tree construction is pending
|
|
eTreeConstructionPending = 0,
|
|
// initial tree construction done
|
|
eTreeConstructed = 1,
|
|
// DOM document is loaded.
|
|
eDOMLoaded = 1 << 1,
|
|
// document is ready
|
|
eReady = eTreeConstructed | eDOMLoaded,
|
|
// document and all its subdocuments are ready
|
|
eCompletelyLoaded = eReady | 1 << 2
|
|
};
|
|
|
|
/**
|
|
* Return true if the document has given document state.
|
|
*/
|
|
bool HasLoadState(LoadState aState) const
|
|
{ return (mLoadState & static_cast<uint32_t>(aState)) ==
|
|
static_cast<uint32_t>(aState); }
|
|
|
|
/**
|
|
* Return a native window handler or pointer depending on platform.
|
|
*/
|
|
virtual void* GetNativeWindow() const;
|
|
|
|
/**
|
|
* Return the parent document.
|
|
*/
|
|
DocAccessible* ParentDocument() const
|
|
{ return mParent ? mParent->Document() : nullptr; }
|
|
|
|
/**
|
|
* Return the child document count.
|
|
*/
|
|
uint32_t ChildDocumentCount() const
|
|
{ return mChildDocuments.Length(); }
|
|
|
|
/**
|
|
* Return the child document at the given index.
|
|
*/
|
|
DocAccessible* GetChildDocumentAt(uint32_t aIndex) const
|
|
{ return mChildDocuments.SafeElementAt(aIndex, nullptr); }
|
|
|
|
/**
|
|
* Fire accessible event asynchronously.
|
|
*/
|
|
void FireDelayedEvent(AccEvent* aEvent);
|
|
void FireDelayedEvent(uint32_t aEventType, Accessible* aTarget);
|
|
|
|
/**
|
|
* Fire value change event on the given accessible if applicable.
|
|
*/
|
|
void MaybeNotifyOfValueChange(Accessible* aAccessible);
|
|
|
|
/**
|
|
* Get/set the anchor jump.
|
|
*/
|
|
Accessible* AnchorJump()
|
|
{ return GetAccessibleOrContainer(mAnchorJumpElm); }
|
|
|
|
void SetAnchorJump(nsIContent* aTargetNode)
|
|
{ mAnchorJumpElm = aTargetNode; }
|
|
|
|
/**
|
|
* Bind the child document to the tree.
|
|
*/
|
|
void BindChildDocument(DocAccessible* aDocument);
|
|
|
|
/**
|
|
* Process the generic notification.
|
|
*
|
|
* @note The caller must guarantee that the given instance still exists when
|
|
* notification is processed.
|
|
* @see NotificationController::HandleNotification
|
|
*/
|
|
template<class Class, class Arg>
|
|
void HandleNotification(Class* aInstance,
|
|
typename TNotification<Class, Arg>::Callback aMethod,
|
|
Arg* aArg);
|
|
|
|
/**
|
|
* Return the cached accessible by the given DOM node if it's in subtree of
|
|
* this document accessible or the document accessible itself, otherwise null.
|
|
*
|
|
* @return the accessible object
|
|
*/
|
|
Accessible* GetAccessible(nsINode* aNode) const;
|
|
|
|
/**
|
|
* Return an accessible for the given node even if the node is not in
|
|
* document's node map cache (like HTML area element).
|
|
*
|
|
* XXX: it should be really merged with GetAccessible().
|
|
*/
|
|
Accessible* GetAccessibleEvenIfNotInMap(nsINode* aNode) const;
|
|
Accessible* GetAccessibleEvenIfNotInMapOrContainer(nsINode* aNode) const;
|
|
|
|
/**
|
|
* Return whether the given DOM node has an accessible or not.
|
|
*/
|
|
bool HasAccessible(nsINode* aNode) const
|
|
{ return GetAccessible(aNode); }
|
|
|
|
/**
|
|
* Return the cached accessible by the given unique ID within this document.
|
|
*
|
|
* @note the unique ID matches with the uniqueID() of Accessible
|
|
*
|
|
* @param aUniqueID [in] the unique ID used to cache the node.
|
|
*/
|
|
Accessible* GetAccessibleByUniqueID(void* aUniqueID)
|
|
{
|
|
return UniqueID() == aUniqueID ?
|
|
this : mAccessibleCache.GetWeak(aUniqueID);
|
|
}
|
|
|
|
/**
|
|
* Return the cached accessible by the given unique ID looking through
|
|
* this and nested documents.
|
|
*/
|
|
Accessible* GetAccessibleByUniqueIDInSubtree(void* aUniqueID);
|
|
|
|
/**
|
|
* Return an accessible for the given DOM node or container accessible if
|
|
* the node is not accessible.
|
|
*/
|
|
Accessible* GetAccessibleOrContainer(nsINode* aNode) const;
|
|
|
|
/**
|
|
* Return a container accessible for the given DOM node.
|
|
*/
|
|
Accessible* GetContainerAccessible(nsINode* aNode) const
|
|
{
|
|
return aNode ? GetAccessibleOrContainer(aNode->GetParentNode()) : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Return an accessible for the given node or its first accessible descendant.
|
|
*/
|
|
Accessible* GetAccessibleOrDescendant(nsINode* aNode) const;
|
|
|
|
/**
|
|
* Returns aria-owns seized child at the given index.
|
|
*/
|
|
Accessible* ARIAOwnedAt(Accessible* aParent, uint32_t aIndex) const
|
|
{
|
|
nsTArray<RefPtr<Accessible> >* children = mARIAOwnsHash.Get(aParent);
|
|
if (children) {
|
|
return children->SafeElementAt(aIndex);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Return true if the given ID is referred by relation attribute.
|
|
*
|
|
* @note Different elements may share the same ID if they are hosted inside
|
|
* XBL bindings. Be careful the result of this method may be senseless
|
|
* while it's called for XUL elements (where XBL is used widely).
|
|
*/
|
|
bool IsDependentID(const nsAString& aID) const
|
|
{ return mDependentIDsHash.Get(aID, nullptr); }
|
|
|
|
/**
|
|
* Initialize the newly created accessible and put it into document caches.
|
|
*
|
|
* @param aAccessible [in] created accessible
|
|
* @param aRoleMapEntry [in] the role map entry role the ARIA role or nullptr
|
|
* if none
|
|
*/
|
|
void BindToDocument(Accessible* aAccessible, nsRoleMapEntry* aRoleMapEntry);
|
|
|
|
/**
|
|
* Remove from document and shutdown the given accessible.
|
|
*/
|
|
void UnbindFromDocument(Accessible* aAccessible);
|
|
|
|
/**
|
|
* Notify the document accessible that content was inserted.
|
|
*/
|
|
void ContentInserted(nsIContent* aContainerNode,
|
|
nsIContent* aStartChildNode,
|
|
nsIContent* aEndChildNode);
|
|
|
|
/**
|
|
* Notify the document accessible that content was removed.
|
|
*/
|
|
void ContentRemoved(Accessible* aContainer, nsIContent* aChildNode)
|
|
{
|
|
// Update the whole tree of this document accessible when the container is
|
|
// null (document element is removed).
|
|
UpdateTreeOnRemoval((aContainer ? aContainer : this), aChildNode);
|
|
}
|
|
void ContentRemoved(nsIContent* aContainerNode, nsIContent* aChildNode)
|
|
{
|
|
ContentRemoved(GetAccessibleOrContainer(aContainerNode), aChildNode);
|
|
}
|
|
|
|
/**
|
|
* Updates accessible tree when rendered text is changed.
|
|
*/
|
|
void UpdateText(nsIContent* aTextNode);
|
|
|
|
/**
|
|
* Recreate an accessible, results in hide/show events pair.
|
|
*/
|
|
void RecreateAccessible(nsIContent* aContent);
|
|
|
|
/**
|
|
* If this document is in a content process return the object responsible for
|
|
* communicating with the main process for it.
|
|
*/
|
|
DocAccessibleChild* IPCDoc() const { return mIPCDoc; }
|
|
|
|
protected:
|
|
virtual ~DocAccessible();
|
|
|
|
void LastRelease();
|
|
|
|
// Accessible
|
|
virtual void CacheChildren() override;
|
|
|
|
// DocAccessible
|
|
virtual nsresult AddEventListeners();
|
|
virtual nsresult RemoveEventListeners();
|
|
|
|
/**
|
|
* Marks this document as loaded or loading.
|
|
*/
|
|
void NotifyOfLoad(uint32_t aLoadEventType);
|
|
void NotifyOfLoading(bool aIsReloading);
|
|
|
|
friend class DocManager;
|
|
|
|
/**
|
|
* Perform initial update (create accessible tree).
|
|
* Can be overridden by wrappers to prepare initialization work.
|
|
*/
|
|
virtual void DoInitialUpdate();
|
|
|
|
/**
|
|
* Process document load notification, fire document load and state busy
|
|
* events if applicable.
|
|
*/
|
|
void ProcessLoad();
|
|
|
|
/**
|
|
* Add/remove scroll listeners, @see nsIScrollPositionListener interface.
|
|
*/
|
|
void AddScrollListener();
|
|
void RemoveScrollListener();
|
|
|
|
/**
|
|
* Append the given document accessible to this document's child document
|
|
* accessibles.
|
|
*/
|
|
bool AppendChildDocument(DocAccessible* aChildDocument)
|
|
{
|
|
return mChildDocuments.AppendElement(aChildDocument);
|
|
}
|
|
|
|
/**
|
|
* Remove the given document accessible from this document's child document
|
|
* accessibles.
|
|
*/
|
|
void RemoveChildDocument(DocAccessible* aChildDocument)
|
|
{
|
|
mChildDocuments.RemoveElement(aChildDocument);
|
|
}
|
|
|
|
/**
|
|
* Add dependent IDs pointed by accessible element by relation attribute to
|
|
* cache. If the relation attribute is missed then all relation attributes
|
|
* are checked.
|
|
*
|
|
* @param aRelProvider [in] accessible that element has relation attribute
|
|
* @param aRelAttr [in, optional] relation attribute
|
|
*/
|
|
void AddDependentIDsFor(Accessible* aRelProvider,
|
|
nsIAtom* aRelAttr = nullptr);
|
|
|
|
/**
|
|
* Remove dependent IDs pointed by accessible element by relation attribute
|
|
* from cache. If the relation attribute is absent then all relation
|
|
* attributes are checked.
|
|
*
|
|
* @param aRelProvider [in] accessible that element has relation attribute
|
|
* @param aRelAttr [in, optional] relation attribute
|
|
*/
|
|
void RemoveDependentIDsFor(Accessible* aRelProvider,
|
|
nsIAtom* aRelAttr = nullptr);
|
|
|
|
/**
|
|
* Update or recreate an accessible depending on a changed attribute.
|
|
*
|
|
* @param aElement [in] the element the attribute was changed on
|
|
* @param aAttribute [in] the changed attribute
|
|
* @return true if an action was taken on the attribute change
|
|
*/
|
|
bool UpdateAccessibleOnAttrChange(mozilla::dom::Element* aElement,
|
|
nsIAtom* aAttribute);
|
|
|
|
/**
|
|
* Fire accessible events when attribute is changed.
|
|
*
|
|
* @param aAccessible [in] accessible the DOM attribute is changed for
|
|
* @param aNameSpaceID [in] namespace of changed attribute
|
|
* @param aAttribute [in] changed attribute
|
|
*/
|
|
void AttributeChangedImpl(Accessible* aAccessible,
|
|
int32_t aNameSpaceID, nsIAtom* aAttribute);
|
|
|
|
/**
|
|
* Fire accessible events when ARIA attribute is changed.
|
|
*
|
|
* @param aAccessible [in] accesislbe the DOM attribute is changed for
|
|
* @param aAttribute [in] changed attribute
|
|
*/
|
|
void ARIAAttributeChanged(Accessible* aAccessible, nsIAtom* aAttribute);
|
|
|
|
/**
|
|
* Process ARIA active-descendant attribute change.
|
|
*/
|
|
void ARIAActiveDescendantChanged(Accessible* aAccessible);
|
|
|
|
/**
|
|
* Update the accessible tree for inserted content.
|
|
*/
|
|
void ProcessContentInserted(Accessible* aContainer,
|
|
const nsTArray<nsCOMPtr<nsIContent> >* aInsertedContent);
|
|
|
|
/**
|
|
* Used to notify the document to make it process the invalidation list.
|
|
*
|
|
* While children are cached we may encounter the case there's no accessible
|
|
* for referred content by related accessible. Store these related nodes to
|
|
* invalidate their containers later.
|
|
*/
|
|
void ProcessInvalidationList();
|
|
|
|
/**
|
|
* Update the tree on content insertion.
|
|
*/
|
|
void UpdateTreeOnInsertion(Accessible* aContainer);
|
|
|
|
/**
|
|
* Update the accessible tree for content removal.
|
|
*/
|
|
void UpdateTreeOnRemoval(Accessible* aContainer, nsIContent* aChildNode);
|
|
|
|
/**
|
|
* Helper for UpdateTreeOn methods. Go down to DOM subtree and updates
|
|
* accessible tree. Return one of these flags.
|
|
*/
|
|
enum EUpdateTreeFlags {
|
|
eNoAccessible = 0,
|
|
eAccessible = 1,
|
|
eAlertAccessible = 2
|
|
};
|
|
|
|
uint32_t UpdateTreeInternal(Accessible* aChild, bool aIsInsert,
|
|
AccReorderEvent* aReorderEvent);
|
|
|
|
/**
|
|
* Schedule ARIA owned element relocation if needed.
|
|
*/
|
|
void RelocateARIAOwnedIfNeeded(nsIContent* aEl);
|
|
|
|
/**
|
|
* Validates all aria-owns connections and updates the tree accordingly.
|
|
*/
|
|
void ValidateARIAOwned();
|
|
|
|
/**
|
|
* Steals or puts back accessible subtrees.
|
|
*/
|
|
void DoARIAOwnsRelocation(Accessible* aOwner);
|
|
|
|
/**
|
|
* Moves the child from old parent under new one.
|
|
*/
|
|
bool SeizeChild(Accessible* aNewParent, Accessible* aChild,
|
|
int32_t aIdxInParent);
|
|
|
|
/**
|
|
* Move the child under same parent.
|
|
*/
|
|
void MoveChild(Accessible* aChild, int32_t aIdxInParent);
|
|
|
|
/**
|
|
* Moves children back under their original parents.
|
|
*/
|
|
void PutChildrenBack(nsTArray<RefPtr<Accessible> >* aChildren,
|
|
uint32_t aStartIdx);
|
|
|
|
/**
|
|
* Create accessible tree.
|
|
*
|
|
* @param aRoot [in] a root of subtree to create
|
|
* @param aFocusedAcc [in, optional] a focused accessible under created
|
|
* subtree if any
|
|
*/
|
|
void CacheChildrenInSubtree(Accessible* aRoot,
|
|
Accessible** aFocusedAcc = nullptr);
|
|
|
|
/**
|
|
* Remove accessibles in subtree from node to accessible map.
|
|
*/
|
|
void UncacheChildrenInSubtree(Accessible* aRoot);
|
|
|
|
/**
|
|
* Shutdown any cached accessible in the subtree.
|
|
*
|
|
* @param aAccessible [in] the root of the subrtee to invalidate accessible
|
|
* child/parent refs in
|
|
*/
|
|
void ShutdownChildrenInSubtree(Accessible* aAccessible);
|
|
|
|
/**
|
|
* Return true if the document is a target of document loading events
|
|
* (for example, state busy change or document reload events).
|
|
*
|
|
* Rules: The root chrome document accessible is never an event target
|
|
* (for example, Firefox UI window). If the sub document is loaded within its
|
|
* parent document then the parent document is a target only (aka events
|
|
* coalescence).
|
|
*/
|
|
bool IsLoadEventTarget() const;
|
|
|
|
/*
|
|
* Set the object responsible for communicating with the main process on
|
|
* behalf of this document.
|
|
*/
|
|
void SetIPCDoc(DocAccessibleChild* aIPCDoc) { mIPCDoc = aIPCDoc; }
|
|
|
|
friend class DocAccessibleChild;
|
|
|
|
/**
|
|
* Used to fire scrolling end event after page scroll.
|
|
*
|
|
* @param aTimer [in] the timer object
|
|
* @param aClosure [in] the document accessible where scrolling happens
|
|
*/
|
|
static void ScrollTimerCallback(nsITimer* aTimer, void* aClosure);
|
|
|
|
protected:
|
|
|
|
/**
|
|
* State and property flags, kept by mDocFlags.
|
|
*/
|
|
enum {
|
|
// Whether scroll listeners were added.
|
|
eScrollInitialized = 1 << 0,
|
|
|
|
// Whether the document is a tab document.
|
|
eTabDocument = 1 << 1
|
|
};
|
|
|
|
/**
|
|
* Cache of accessibles within this document accessible.
|
|
*/
|
|
AccessibleHashtable mAccessibleCache;
|
|
nsDataHashtable<nsPtrHashKey<const nsINode>, Accessible*>
|
|
mNodeToAccessibleMap;
|
|
|
|
nsIDocument* mDocumentNode;
|
|
nsCOMPtr<nsITimer> mScrollWatchTimer;
|
|
uint16_t mScrollPositionChangedTicks; // Used for tracking scroll events
|
|
|
|
/**
|
|
* Bit mask of document load states (@see LoadState).
|
|
*/
|
|
uint32_t mLoadState : 3;
|
|
|
|
/**
|
|
* Bit mask of other states and props.
|
|
*/
|
|
uint32_t mDocFlags : 28;
|
|
|
|
/**
|
|
* Type of document load event fired after the document is loaded completely.
|
|
*/
|
|
uint32_t mLoadEventType;
|
|
|
|
/**
|
|
* Reference to anchor jump element.
|
|
*/
|
|
nsCOMPtr<nsIContent> mAnchorJumpElm;
|
|
|
|
/**
|
|
* A generic state (see items below) before the attribute value was changed.
|
|
* @see AttributeWillChange and AttributeChanged notifications.
|
|
*/
|
|
union {
|
|
// ARIA attribute value
|
|
nsIAtom* mARIAAttrOldValue;
|
|
|
|
// True if the accessible state bit was on
|
|
bool mStateBitWasOn;
|
|
};
|
|
|
|
nsTArray<RefPtr<DocAccessible> > mChildDocuments;
|
|
|
|
/**
|
|
* The virtual cursor of the document.
|
|
*/
|
|
RefPtr<nsAccessiblePivot> mVirtualCursor;
|
|
|
|
/**
|
|
* A storage class for pairing content with one of its relation attributes.
|
|
*/
|
|
class AttrRelProvider
|
|
{
|
|
public:
|
|
AttrRelProvider(nsIAtom* aRelAttr, nsIContent* aContent) :
|
|
mRelAttr(aRelAttr), mContent(aContent) { }
|
|
|
|
nsIAtom* mRelAttr;
|
|
nsCOMPtr<nsIContent> mContent;
|
|
|
|
private:
|
|
AttrRelProvider();
|
|
AttrRelProvider(const AttrRelProvider&);
|
|
AttrRelProvider& operator =(const AttrRelProvider&);
|
|
};
|
|
|
|
/**
|
|
* The cache of IDs pointed by relation attributes.
|
|
*/
|
|
typedef nsTArray<nsAutoPtr<AttrRelProvider> > AttrRelProviderArray;
|
|
nsClassHashtable<nsStringHashKey, AttrRelProviderArray>
|
|
mDependentIDsHash;
|
|
|
|
friend class RelatedAccIterator;
|
|
|
|
/**
|
|
* Used for our caching algorithm. We store the list of nodes that should be
|
|
* invalidated.
|
|
*
|
|
* @see ProcessInvalidationList
|
|
*/
|
|
nsTArray<RefPtr<nsIContent>> mInvalidationList;
|
|
|
|
/**
|
|
* Holds a list of aria-owns relocations.
|
|
*/
|
|
nsClassHashtable<nsPtrHashKey<Accessible>, nsTArray<RefPtr<Accessible> > >
|
|
mARIAOwnsHash;
|
|
|
|
/**
|
|
* Used to process notification from core and accessible events.
|
|
*/
|
|
RefPtr<NotificationController> mNotificationController;
|
|
friend class EventQueue;
|
|
friend class NotificationController;
|
|
|
|
private:
|
|
|
|
nsIPresShell* mPresShell;
|
|
|
|
// Exclusively owned by IPDL so don't manually delete it!
|
|
DocAccessibleChild* mIPCDoc;
|
|
};
|
|
|
|
inline DocAccessible*
|
|
Accessible::AsDoc()
|
|
{
|
|
return IsDoc() ? static_cast<DocAccessible*>(this) : nullptr;
|
|
}
|
|
|
|
} // namespace a11y
|
|
} // namespace mozilla
|
|
|
|
#endif
|