accessibility_misc_utils.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4#ifndef UI_BASE_WIN_ACCESSIBILITY_MISC_UTILS_H_
5#define UI_BASE_WIN_ACCESSIBILITY_MISC_UTILS_H_
6
7#include <atlbase.h>
8#include <atlcom.h>
9#include <UIAutomationCore.h>
10
11#include "base/compiler_specific.h"
12#include "ui/base/ui_base_export.h"
13
14namespace base {
15namespace win {
16
17  // UIA Text provider implementation for edit controls.
18class UI_BASE_EXPORT UIATextProvider
19    : public NON_EXPORTED_BASE(CComObjectRootEx<CComMultiThreadModel>),
20      public IValueProvider,
21      public ITextProvider {
22 public:
23  BEGIN_COM_MAP(UIATextProvider)
24    COM_INTERFACE_ENTRY2(IUnknown, ITextProvider)
25    COM_INTERFACE_ENTRY(IValueProvider)
26    COM_INTERFACE_ENTRY(ITextProvider)
27  END_COM_MAP()
28
29  UIATextProvider();
30
31  // Creates an instance of the UIATextProvider class.
32  // Returns true on success
33  static bool CreateTextProvider(bool editable, IUnknown** provider);
34
35  void set_editable(bool editable) {
36    editable_ = editable;
37  }
38
39  //
40  // IValueProvider methods.
41  //
42  STDMETHOD(get_IsReadOnly)(BOOL* read_only);
43
44  //
45  // IValueProvider methods not implemented.
46  //
47  STDMETHOD(SetValue)(const wchar_t* val) {
48    return E_NOTIMPL;
49  }
50
51  STDMETHOD(get_Value)(BSTR* value) {
52    return E_NOTIMPL;
53  }
54
55  //
56  // ITextProvider methods.
57  //
58  STDMETHOD(GetSelection)(SAFEARRAY** ret) {
59    return E_NOTIMPL;
60  }
61
62  STDMETHOD(GetVisibleRanges)(SAFEARRAY** ret) {
63    return E_NOTIMPL;
64  }
65
66  STDMETHOD(RangeFromChild)(IRawElementProviderSimple* child,
67                            ITextRangeProvider** ret) {
68    return E_NOTIMPL;
69  }
70
71  STDMETHOD(RangeFromPoint)(struct UiaPoint point,
72                            ITextRangeProvider** ret) {
73    return E_NOTIMPL;
74  }
75
76  STDMETHOD(get_DocumentRange)(ITextRangeProvider** ret) {
77    return E_NOTIMPL;
78  }
79
80  STDMETHOD(get_SupportedTextSelection)(enum SupportedTextSelection* ret) {
81    return E_NOTIMPL;
82  }
83
84 private:
85  bool editable_;
86};
87
88}  // win
89}  // base
90
91#endif  // UI_BASE_WIN_ACCESSIBILITY_MISC_UTILS_H_
92