gecko-dev/accessible/ipc/ProxyAccessible.h

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/* -*- 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/. */
#ifndef mozilla_a11y_ProxyAccessible_h
#define mozilla_a11y_ProxyAccessible_h
#include "mozilla/a11y/Role.h"
#include "nsString.h"
#include "nsTArray.h"
namespace mozilla {
namespace a11y {
class Attribute;
class DocAccessibleParent;
class ProxyAccessible
{
public:
ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
DocAccessibleParent* aDoc, role aRole) :
mParent(aParent), mDoc(aDoc), mWrapper(0), mID(aID), mRole(aRole),
mOuterDoc(false)
{
MOZ_COUNT_CTOR(ProxyAccessible);
}
~ProxyAccessible()
{
MOZ_COUNT_DTOR(ProxyAccessible);
MOZ_ASSERT(!mWrapper);
}
void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
{ mChildren.InsertElementAt(aIdx, aChild); }
uint32_t ChildrenCount() const { return mChildren.Length(); }
void Shutdown();
void SetChildDoc(DocAccessibleParent*);
/**
* Remove The given child.
*/
void RemoveChild(ProxyAccessible* aChild)
{ mChildren.RemoveElement(aChild); }
/**
* Return the proxy for the parent of the wrapped accessible.
*/
ProxyAccessible* Parent() const { return mParent; }
/**
* Get the role of the accessible we're proxying.
*/
role Role() const { return mRole; }
/*
* Return the states for the proxied accessible.
*/
uint64_t State() const;
/*
* Set aName to the name of the proxied accessible.
*/
void Name(nsString& aName) const;
/**
* Set aDesc to the description of the proxied accessible.
*/
void Description(nsString& aDesc) const;
/**
* Get the set of attributes on the proxied accessible.
*/
void Attributes(nsTArray<Attribute> *aAttrs) const;
/**
* Get the text between the given offsets.
*/
void TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
nsString& aText) const;
/**
* Allow the platform to store a pointers worth of data on us.
*/
uintptr_t GetWrapper() const { return mWrapper; }
void SetWrapper(uintptr_t aWrapper) { mWrapper = aWrapper; }
/*
* Return the ID of the accessible being proxied.
*/
uint64_t ID() const { return mID; }
protected:
explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc) :
mParent(nullptr), mDoc(aThisAsDoc), mWrapper(0), mID(0),
mRole(roles::DOCUMENT)
{ MOZ_COUNT_CTOR(ProxyAccessible); }
protected:
ProxyAccessible* mParent;
private:
nsTArray<ProxyAccessible*> mChildren;
DocAccessibleParent* mDoc;
uintptr_t mWrapper;
uint64_t mID;
role mRole : 31;
bool mOuterDoc : 1;
};
enum Interfaces
{
HYPERTEXT = 1
};
}
}
#endif