summaryrefslogtreecommitdiffstats
path: root/accessible/windows/msaa/MsaaAccessible.h
blob: fa43c441bf533b1616f66c098e5169b1acce830f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/* -*- 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_MsaaAccessible_h_
#define mozilla_a11y_MsaaAccessible_h_

#include "ia2Accessible.h"
#include "ia2AccessibleComponent.h"
#include "ia2AccessibleHyperlink.h"
#include "ia2AccessibleValue.h"
#include "IUnknownImpl.h"
#include "MsaaIdGenerator.h"
#include "nsXULAppAPI.h"
#include "uiaRawElmProvider.h"

namespace mozilla {
namespace a11y {
class Accessible;
class AccessibleWrap;
class LocalAccessible;
class sdnAccessible;

class MsaaAccessible : public ia2Accessible,
                       public ia2AccessibleComponent,
                       public ia2AccessibleHyperlink,
                       public ia2AccessibleValue,
                       public uiaRawElmProvider {
 public:
  static MsaaAccessible* Create(Accessible* aAcc);

  Accessible* Acc() const { return mAcc; }
  AccessibleWrap* LocalAcc();

  uint32_t GetExistingID() const { return mID; }
  static const uint32_t kNoID = 0;

  static int32_t GetChildIDFor(Accessible* aAccessible);
  static void AssignChildIDTo(NotNull<sdnAccessible*> aSdnAcc);
  static void ReleaseChildID(NotNull<sdnAccessible*> aSdnAcc);
  static HWND GetHWNDFor(Accessible* aAccessible);
  static void FireWinEvent(Accessible* aTarget, uint32_t aEventType);

  /**
   * Find an accessible by the given child ID in cached documents.
   */
  [[nodiscard]] already_AddRefed<IAccessible> GetIAccessibleFor(
      const VARIANT& aVarChild, bool* aIsDefunct);

  void MsaaShutdown();

  static IDispatch* NativeAccessible(Accessible* aAccessible);

  static MsaaAccessible* GetFrom(Accessible* aAcc);

  /**
   * Creates ITypeInfo for LIBID_Accessibility if it's needed and returns it.
   */
  static ITypeInfo* GetTI(LCID lcid);

  static Accessible* GetAccessibleFrom(IUnknown* aUnknown);

  DECL_IUNKNOWN

  // 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;

  // UIA's IInvokeProvider has a method called Invoke too, but it's fine because
  // it accepts very different parameters.
  using uiaRawElmProvider::Invoke;

 protected:
  explicit MsaaAccessible(Accessible* aAcc);
  virtual ~MsaaAccessible();

  Accessible* mAcc;

  uint32_t mID;
  static MsaaIdGenerator sIDGen;

  HRESULT
  ResolveChild(const VARIANT& aVarChild, IAccessible** aOutInterface);

  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_WINDOW = 0x1013,
    NAVRELATION_CONTAINING_APPLICATION = 0x1014,
    NAVRELATION_DETAILS = 0x1015,
    NAVRELATION_DETAILS_FOR = 0x1016,
    NAVRELATION_ERROR = 0x1017,
    NAVRELATION_ERROR_FOR = 0x1018,
    NAVRELATION_LINKS_TO = 0x1019
  };

 private:
  static ITypeInfo* gTypeInfo;
};

}  // namespace a11y
}  // namespace mozilla

#ifdef XP_WIN
// Undo the windows.h damage
#  undef GetMessage
#  undef CreateEvent
#  undef GetClassName
#  undef GetBinaryType
#  undef RemoveDirectory
#endif

#endif