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Diffstat (limited to 'accessible/windows/msaa/AccessibleWrap.h')
| -rw-r--r-- | accessible/windows/msaa/AccessibleWrap.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/accessible/windows/msaa/AccessibleWrap.h b/accessible/windows/msaa/AccessibleWrap.h new file mode 100644 index 000000000..eb97c2667 --- /dev/null +++ b/accessible/windows/msaa/AccessibleWrap.h @@ -0,0 +1,265 @@ +/* -*- 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_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 |