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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/. */
#ifndef mozilla_a11y_AccessibleWrap_h_
#define mozilla_a11y_AccessibleWrap_h_
#include "nsCOMPtr.h"
#include "Accessible.h"
#include "Accessible2.h"
#include "ia2Accessible.h"
#include "ia2AccessibleComponent.h"
#include "ia2AccessibleHyperlink.h"
#include "ia2AccessibleValue.h"
#include "mozilla/a11y/MsaaIdGenerator.h"
#include "mozilla/a11y/ProxyAccessible.h"
#include "mozilla/Attributes.h"
#ifdef __GNUC__
// Inheriting from both XPCOM and MSCOM interfaces causes a lot of warnings
// about virtual functions being hidden by each other. This is done by
// design, so silence the warning.
#pragma GCC diagnostic ignored "-Woverloaded-virtual"
#endif
namespace mozilla {
namespace a11y {
class DocProxyAccessibleWrap;
class AccessibleWrap : public Accessible,
public ia2Accessible,
public ia2AccessibleComponent,
public ia2AccessibleHyperlink,
public ia2AccessibleValue
{
public: // construction, destruction
AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc);
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
public: // IUnknown methods - see iunknown.h for documentation
STDMETHODIMP QueryInterface(REFIID, void**) override;
// Return the registered OLE class ID of this object's CfDataObj.
CLSID GetClassID() const;
public: // COM interface IAccessible
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accParent(
/* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispParent) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accChildCount(
/* [retval][out] */ long __RPC_FAR *pcountChildren) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accChild(
/* [in] */ VARIANT varChild,
/* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispChild) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accName(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszName) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accValue(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszValue) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accDescription(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszDescription) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accRole(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ VARIANT __RPC_FAR *pvarRole) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accState(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ VARIANT __RPC_FAR *pvarState) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accHelp(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszHelp) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accHelpTopic(
/* [out] */ BSTR __RPC_FAR *pszHelpFile,
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ long __RPC_FAR *pidTopic) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accKeyboardShortcut(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszKeyboardShortcut) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accFocus(
/* [retval][out] */ VARIANT __RPC_FAR *pvarChild) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accSelection(
/* [retval][out] */ VARIANT __RPC_FAR *pvarChildren) override;
virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accDefaultAction(
/* [optional][in] */ VARIANT varChild,
/* [retval][out] */ BSTR __RPC_FAR *pszDefaultAction) override;
virtual /* [id] */ HRESULT STDMETHODCALLTYPE accSelect(
/* [in] */ long flagsSelect,
/* [optional][in] */ VARIANT varChild) override;
virtual /* [id] */ HRESULT STDMETHODCALLTYPE accLocation(
/* [out] */ long __RPC_FAR *pxLeft,
/* [out] */ long __RPC_FAR *pyTop,
/* [out] */ long __RPC_FAR *pcxWidth,
/* [out] */ long __RPC_FAR *pcyHeight,
/* [optional][in] */ VARIANT varChild) override;
virtual /* [id] */ HRESULT STDMETHODCALLTYPE accNavigate(
/* [in] */ long navDir,
/* [optional][in] */ VARIANT varStart,
/* [retval][out] */ VARIANT __RPC_FAR *pvarEndUpAt) override;
virtual /* [id] */ HRESULT STDMETHODCALLTYPE accHitTest(
/* [in] */ long xLeft,
/* [in] */ long yTop,
/* [retval][out] */ VARIANT __RPC_FAR *pvarChild) override;
virtual /* [id] */ HRESULT STDMETHODCALLTYPE accDoDefaultAction(
/* [optional][in] */ VARIANT varChild) override;
virtual /* [id][propput] */ HRESULT STDMETHODCALLTYPE put_accName(
/* [optional][in] */ VARIANT varChild,
/* [in] */ BSTR szName) override;
virtual /* [id][propput] */ HRESULT STDMETHODCALLTYPE put_accValue(
/* [optional][in] */ VARIANT varChild,
/* [in] */ BSTR szValue) override;
// IDispatch (support of scripting languages like VB)
virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount(UINT *pctinfo) override;
virtual HRESULT STDMETHODCALLTYPE GetTypeInfo(UINT iTInfo, LCID lcid,
ITypeInfo **ppTInfo) override;
virtual HRESULT STDMETHODCALLTYPE GetIDsOfNames(REFIID riid,
LPOLESTR *rgszNames,
UINT cNames,
LCID lcid,
DISPID *rgDispId) override;
virtual HRESULT STDMETHODCALLTYPE Invoke(DISPID dispIdMember, REFIID riid,
LCID lcid, WORD wFlags,
DISPPARAMS *pDispParams,
VARIANT *pVarResult,
EXCEPINFO *pExcepInfo,
UINT *puArgErr) override;
// Accessible
virtual nsresult HandleAccEvent(AccEvent* aEvent) override;
virtual void Shutdown() override;
// Helper methods
static int32_t GetChildIDFor(Accessible* aAccessible);
static HWND GetHWNDFor(Accessible* aAccessible);
static void FireWinEvent(Accessible* aTarget, uint32_t aEventType);
/**
* System caret support: update the Windows caret position.
* The system caret works more universally than the MSAA caret
* For example, Window-Eyes, JAWS, ZoomText and Windows Tablet Edition use it
* We will use an invisible system caret.
* Gecko is still responsible for drawing its own caret
*/
void UpdateSystemCaretFor(Accessible* aAccessible);
/**
* Find an accessible by the given child ID in cached documents.
*/
MOZ_MUST_USE already_AddRefed<IAccessible>
GetIAccessibleFor(const VARIANT& aVarChild, bool* aIsDefunct);
virtual void GetNativeInterface(void **aOutAccessible) override;
static IDispatch* NativeAccessible(Accessible* aAccessible);
uint32_t GetExistingID() const { return mID; }
static const uint32_t kNoID = 0;
void SetID(uint32_t aID);
static uint32_t GetContentProcessIdFor(dom::ContentParentId aIPCContentId);
static void ReleaseContentProcessIdFor(dom::ContentParentId aIPCContentId);
protected:
virtual ~AccessibleWrap();
uint32_t mID;
HRESULT
ResolveChild(const VARIANT& aVarChild, IAccessible** aOutInterface);
/**
* Find a remote accessible by the given child ID.
*/
MOZ_MUST_USE already_AddRefed<IAccessible>
GetRemoteIAccessibleFor(const VARIANT& aVarChild);
/**
* Return the wrapper for the document's proxy.
*/
DocProxyAccessibleWrap* DocProxyWrapper() const;
/**
* Creates ITypeInfo for LIBID_Accessibility if it's needed and returns it.
*/
static ITypeInfo* GetTI(LCID lcid);
static ITypeInfo* gTypeInfo;
static MsaaIdGenerator sIDGen;
enum navRelations {
NAVRELATION_CONTROLLED_BY = 0x1000,
NAVRELATION_CONTROLLER_FOR = 0x1001,
NAVRELATION_LABEL_FOR = 0x1002,
NAVRELATION_LABELLED_BY = 0x1003,
NAVRELATION_MEMBER_OF = 0x1004,
NAVRELATION_NODE_CHILD_OF = 0x1005,
NAVRELATION_FLOWS_TO = 0x1006,
NAVRELATION_FLOWS_FROM = 0x1007,
NAVRELATION_SUBWINDOW_OF = 0x1008,
NAVRELATION_EMBEDS = 0x1009,
NAVRELATION_EMBEDDED_BY = 0x100a,
NAVRELATION_POPUP_FOR = 0x100b,
NAVRELATION_PARENT_WINDOW_OF = 0x100c,
NAVRELATION_DEFAULT_BUTTON = 0x100d,
NAVRELATION_DESCRIBED_BY = 0x100e,
NAVRELATION_DESCRIPTION_FOR = 0x100f,
NAVRELATION_NODE_PARENT_OF = 0x1010,
NAVRELATION_CONTAINING_DOCUMENT = 0x1011,
NAVRELATION_CONTAINING_TAB_PANE = 0x1012,
NAVRELATION_CONTAINING_APPLICATION = 0x1014,
NAVRELATION_DETAILS = 0x1015,
NAVRELATION_DETAILS_FOR = 0x1016,
NAVRELATION_ERROR = 0x1017,
NAVRELATION_ERROR_FOR = 0x1018
};
};
static inline AccessibleWrap*
WrapperFor(const ProxyAccessible* aProxy)
{
return reinterpret_cast<AccessibleWrap*>(aProxy->GetWrapper());
}
} // namespace a11y
} // namespace mozilla
#ifdef XP_WIN
// Undo the windows.h damage
#undef GetMessage
#undef CreateEvent
#undef GetClassName
#undef GetBinaryType
#undef RemoveDirectory
#endif
#endif
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