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nsAccessNode.h
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nsAccessNode.h
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/* -*- 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/. */
/* For documentation of the accessibility architecture,
* see http://lxr.mozilla.org/seamonkey/source/accessible/accessible-docs.html
*/
#ifndef _nsAccessNode_H_
#define _nsAccessNode_H_
#include "nsIAccessibleTypes.h"
#include "nsINode.h"
#include "a11yGeneric.h"
class nsAccessNode;
class DocAccessible;
class nsIAccessibleDocument;
class nsIContent;
namespace mozilla {
namespace a11y {
class ApplicationAccessible;
class RootAccessible;
}
}
class nsIPresShell;
class nsPresContext;
class nsIFrame;
class nsIDocShellTreeItem;
class nsAccessNode: public nsISupports
{
public:
nsAccessNode(nsIContent* aContent, DocAccessible* aDoc);
virtual ~nsAccessNode();
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS(nsAccessNode)
static void ShutdownXPAccessibility();
/**
* Return an application accessible.
*/
static mozilla::a11y::ApplicationAccessible* GetApplicationAccessible();
/**
* Return the document accessible for this access node.
*/
DocAccessible* Document() const { return mDoc; }
/**
* Return the root document accessible for this accessnode.
*/
mozilla::a11y::RootAccessible* RootAccessible() const;
/**
* Shutdown the access node object.
*/
virtual void Shutdown();
/**
* Return frame for the given access node object.
*/
virtual nsIFrame* GetFrame() const;
/**
* Return DOM node associated with the accessible.
*/
virtual nsINode* GetNode() const;
nsIContent* GetContent() const { return mContent; }
virtual nsIDocument* GetDocumentNode() const;
/**
* Return node type information of DOM node associated with the accessible.
*/
bool IsContent() const
{
return GetNode() && GetNode()->IsNodeOfType(nsINode::eCONTENT);
}
bool IsElement() const
{
nsINode* node = GetNode();
return node && node->IsElement();
}
bool IsDocumentNode() const
{
return GetNode() && GetNode()->IsNodeOfType(nsINode::eDOCUMENT);
}
/**
* Return the unique identifier of the accessible.
*/
void* UniqueID() { return static_cast<void*>(this); }
/**
* Return true if the accessible is primary accessible for the given DOM node.
*
* Accessible hierarchy may be complex for single DOM node, in this case
* these accessibles share the same DOM node. The primary accessible "owns"
* that DOM node in terms it gets stored in the accessible to node map.
*/
virtual bool IsPrimaryForNode() const;
/**
* Interface methods on nsIAccessible shared with ISimpleDOM.
*/
void Language(nsAString& aLocale);
protected:
void LastRelease();
nsCOMPtr<nsIContent> mContent;
DocAccessible* mDoc;
private:
nsAccessNode() MOZ_DELETE;
nsAccessNode(const nsAccessNode&) MOZ_DELETE;
nsAccessNode& operator =(const nsAccessNode&) MOZ_DELETE;
static mozilla::a11y::ApplicationAccessible* gApplicationAccessible;
};
#endif