The Tor Browser / file revision

accessible/src/windows/msaa/AccessibleWrap.h@97036ab72558

accessible/src/windows/msaa/AccessibleWrap.h

Tue, 06 Jan 2015 21:39:09 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Tue, 06 Jan 2015 21:39:09 +0100
branch
TOR_BUG_9701
changeset 8
97036ab72558
permissions
-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 

     7 #ifndef mozilla_a11y_AccessibleWrap_h_

     8 #define mozilla_a11y_AccessibleWrap_h_

     9 

    10 #include "nsCOMPtr.h"

    11 #include "Accessible.h"

    12 #include "Accessible2.h"

    13 #include "ia2Accessible.h"

    14 #include "ia2AccessibleComponent.h"

    15 #include "ia2AccessibleHyperlink.h"

    16 #include "ia2AccessibleValue.h"

    17 

    18 #ifdef __GNUC__

    19 // Inheriting from both XPCOM and MSCOM interfaces causes a lot of warnings

    20 // about virtual functions being hidden by each other. This is done by

    21 // design, so silence the warning.

    22 #pragma GCC diagnostic ignored "-Woverloaded-virtual"

    23 #endif

    24 

    25 namespace mozilla {

    26 namespace a11y {

    27 

    28 class AccessibleWrap : public Accessible,

    29                        public ia2Accessible,

    30                        public ia2AccessibleComponent,

    31                        public ia2AccessibleHyperlink,

    32                        public ia2AccessibleValue

    33 {

    34 public: // construction, destruction

    35   AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc) :

    36     Accessible(aContent, aDoc) { }

    37   virtual ~AccessibleWrap() { }

    38 

    39   // nsISupports

    40   NS_DECL_ISUPPORTS_INHERITED

    41 

    42   public: // IUnknown methods - see iunknown.h for documentation

    43     STDMETHODIMP QueryInterface(REFIID, void**);

    44 

    45   // Return the registered OLE class ID of this object's CfDataObj.

    46     CLSID GetClassID() const;

    47 

    48   public: // COM interface IAccessible

    49     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accParent( 

    50         /* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispParent);

    51 

    52     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accChildCount( 

    53         /* [retval][out] */ long __RPC_FAR *pcountChildren);

    54 

    55     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accChild( 

    56         /* [in] */ VARIANT varChild,

    57         /* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispChild);

    58 

    59     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accName( 

    60         /* [optional][in] */ VARIANT varChild,

    61         /* [retval][out] */ BSTR __RPC_FAR *pszName);

    62 

    63     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accValue( 

    64         /* [optional][in] */ VARIANT varChild,

    65         /* [retval][out] */ BSTR __RPC_FAR *pszValue);

    66 

    67     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accDescription( 

    68         /* [optional][in] */ VARIANT varChild,

    69         /* [retval][out] */ BSTR __RPC_FAR *pszDescription);

    70 

    71     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accRole( 

    72         /* [optional][in] */ VARIANT varChild,

    73         /* [retval][out] */ VARIANT __RPC_FAR *pvarRole);

    74 

    75     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accState( 

    76         /* [optional][in] */ VARIANT varChild,

    77         /* [retval][out] */ VARIANT __RPC_FAR *pvarState);

    78 

    79     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accHelp( 

    80         /* [optional][in] */ VARIANT varChild,

    81         /* [retval][out] */ BSTR __RPC_FAR *pszHelp);

    82 

    83     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accHelpTopic( 

    84         /* [out] */ BSTR __RPC_FAR *pszHelpFile,

    85         /* [optional][in] */ VARIANT varChild,

    86         /* [retval][out] */ long __RPC_FAR *pidTopic);

    87 

    88     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accKeyboardShortcut( 

    89         /* [optional][in] */ VARIANT varChild,

    90         /* [retval][out] */ BSTR __RPC_FAR *pszKeyboardShortcut);

    91 

    92     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accFocus( 

    93         /* [retval][out] */ VARIANT __RPC_FAR *pvarChild);

    94 

    95     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accSelection( 

    96         /* [retval][out] */ VARIANT __RPC_FAR *pvarChildren);

    97 

    98     virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_accDefaultAction( 

    99         /* [optional][in] */ VARIANT varChild,

   100         /* [retval][out] */ BSTR __RPC_FAR *pszDefaultAction);

   101 

   102     virtual /* [id] */ HRESULT STDMETHODCALLTYPE accSelect( 

   103         /* [in] */ long flagsSelect,

   104         /* [optional][in] */ VARIANT varChild);

   105 

   106     virtual /* [id] */ HRESULT STDMETHODCALLTYPE accLocation( 

   107         /* [out] */ long __RPC_FAR *pxLeft,

   108         /* [out] */ long __RPC_FAR *pyTop,

   109         /* [out] */ long __RPC_FAR *pcxWidth,

   110         /* [out] */ long __RPC_FAR *pcyHeight,

   111         /* [optional][in] */ VARIANT varChild);

   112 

   113     virtual /* [id] */ HRESULT STDMETHODCALLTYPE accNavigate( 

   114         /* [in] */ long navDir,

   115         /* [optional][in] */ VARIANT varStart,

   116         /* [retval][out] */ VARIANT __RPC_FAR *pvarEndUpAt);

   117 

   118     virtual /* [id] */ HRESULT STDMETHODCALLTYPE accHitTest( 

   119         /* [in] */ long xLeft,

   120         /* [in] */ long yTop,

   121         /* [retval][out] */ VARIANT __RPC_FAR *pvarChild);

   122 

   123     virtual /* [id] */ HRESULT STDMETHODCALLTYPE accDoDefaultAction( 

   124         /* [optional][in] */ VARIANT varChild);

   125 

   126     virtual /* [id][propput] */ HRESULT STDMETHODCALLTYPE put_accName( 

   127         /* [optional][in] */ VARIANT varChild,

   128         /* [in] */ BSTR szName);

   129 

   130     virtual /* [id][propput] */ HRESULT STDMETHODCALLTYPE put_accValue( 

   131         /* [optional][in] */ VARIANT varChild,

   132         /* [in] */ BSTR szValue);

   133 

   134   // IDispatch (support of scripting languages like VB)

   135   virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount(UINT *pctinfo);

   136 

   137   virtual HRESULT STDMETHODCALLTYPE GetTypeInfo(UINT iTInfo, LCID lcid,

   138                                                 ITypeInfo **ppTInfo);

   139 

   140   virtual HRESULT STDMETHODCALLTYPE GetIDsOfNames(REFIID riid,

   141                                                   LPOLESTR *rgszNames,

   142                                                   UINT cNames,

   143                                                   LCID lcid,

   144                                                   DISPID *rgDispId);

   145 

   146   virtual HRESULT STDMETHODCALLTYPE Invoke(DISPID dispIdMember, REFIID riid,

   147                                            LCID lcid, WORD wFlags,

   148                                            DISPPARAMS *pDispParams,

   149                                            VARIANT *pVarResult,

   150                                            EXCEPINFO *pExcepInfo,

   151                                            UINT *puArgErr);

   152 

   153   // Accessible

   154   virtual nsresult HandleAccEvent(AccEvent* aEvent);

   155 

   156   // Helper methods

   157   static int32_t GetChildIDFor(Accessible* aAccessible);

   158   static HWND GetHWNDFor(Accessible* aAccessible);

   159 

   160   /**

   161    * System caret support: update the Windows caret position. 

   162    * The system caret works more universally than the MSAA caret

   163    * For example, Window-Eyes, JAWS, ZoomText and Windows Tablet Edition use it

   164    * We will use an invisible system caret.

   165    * Gecko is still responsible for drawing its own caret

   166    */

   167   void UpdateSystemCaretFor(Accessible* aAccessible);

   168 

   169   /**

   170    * Find an accessible by the given child ID in cached documents.

   171    */

   172   Accessible* GetXPAccessibleFor(const VARIANT& aVarChild);

   173 

   174   NS_IMETHOD GetNativeInterface(void **aOutAccessible);

   175 

   176   static IDispatch *NativeAccessible(nsIAccessible *aXPAccessible);

   177 

   178 protected:

   179 

   180   /**

   181    * Creates ITypeInfo for LIBID_Accessibility if it's needed and returns it.

   182    */

   183   static ITypeInfo* GetTI(LCID lcid);

   184 

   185   static ITypeInfo* gTypeInfo;

   186 

   187 

   188   enum navRelations {

   189     NAVRELATION_CONTROLLED_BY = 0x1000,

   190     NAVRELATION_CONTROLLER_FOR = 0x1001,

   191     NAVRELATION_LABEL_FOR = 0x1002,

   192     NAVRELATION_LABELLED_BY = 0x1003,

   193     NAVRELATION_MEMBER_OF = 0x1004,

   194     NAVRELATION_NODE_CHILD_OF = 0x1005,

   195     NAVRELATION_FLOWS_TO = 0x1006,

   196     NAVRELATION_FLOWS_FROM = 0x1007,

   197     NAVRELATION_SUBWINDOW_OF = 0x1008,

   198     NAVRELATION_EMBEDS = 0x1009,

   199     NAVRELATION_EMBEDDED_BY = 0x100a,

   200     NAVRELATION_POPUP_FOR = 0x100b,

   201     NAVRELATION_PARENT_WINDOW_OF = 0x100c,

   202     NAVRELATION_DEFAULT_BUTTON = 0x100d,

   203     NAVRELATION_DESCRIBED_BY = 0x100e,

   204     NAVRELATION_DESCRIPTION_FOR = 0x100f,

   205     NAVRELATION_NODE_PARENT_OF = 0x1010,

   206     NAVRELATION_CONTAINING_DOCUMENT = 0x1011,

   207     NAVRELATION_CONTAINING_TAB_PANE = 0x1012,

   208     NAVRELATION_CONTAINING_APPLICATION = 0x1014

   209   };

   210 };

   211 

   212 } // namespace a11y

   213 } // namespace mozilla

   214 

   215 #ifdef XP_WIN

   216 // Undo the windows.h damage

   217 #undef GetMessage

   218 #undef CreateEvent

   219 #undef GetClassName

   220 #undef GetBinaryType

   221 #endif

   222 

   223 #endif

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