ui/base/win/accessibility_misc_utils.h

   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 "base/strings/string16.h"
  13 #include "ui/base/ui_base_export.h"
  14
  15 namespace base {
  16 namespace win {
  17
  18   // UIA Text provider implementation for edit controls.
  19 class UI_BASE_EXPORT UIATextProvider
  20     : public NON_EXPORTED_BASE(CComObjectRootEx<CComMultiThreadModel>),
  21       public IValueProvider,
  22       public ITextProvider {
  23  public:
  24   BEGIN_COM_MAP(UIATextProvider)
  25     COM_INTERFACE_ENTRY2(IUnknown, ITextProvider)
  26     COM_INTERFACE_ENTRY(IValueProvider)
  27     COM_INTERFACE_ENTRY(ITextProvider)
  28   END_COM_MAP()
  29
  30   UIATextProvider();
  31
  32   // Creates an instance of the UIATextProvider class.
  33   // Returns true on success
  34   static bool CreateTextProvider(const string16& value,
  35                                  bool editable,
  36                                  IUnknown** provider);
  37
  38   void set_editable(bool editable) {
  39     editable_ = editable;
  40   }
  41
  42   void set_value(const string16& value) { value_ = value; }
  43
  44   //
  45   // IValueProvider methods.
  46   //
  47   STDMETHOD(get_IsReadOnly)(BOOL* read_only);
  48
  49   //
  50   // IValueProvider methods not implemented.
  51   //
  52   STDMETHOD(SetValue)(const wchar_t* val) {
  53     return E_NOTIMPL;
  54   }
  55
  56   STDMETHOD(get_Value)(BSTR* value);
  57
  58   //
  59   // ITextProvider methods.
  60   //
  61   STDMETHOD(GetSelection)(SAFEARRAY** ret) {
  62     return E_NOTIMPL;
  63   }
  64
  65   STDMETHOD(GetVisibleRanges)(SAFEARRAY** ret) {
  66     return E_NOTIMPL;
  67   }
  68
  69   STDMETHOD(RangeFromChild)(IRawElementProviderSimple* child,
  70                             ITextRangeProvider** ret) {
  71     return E_NOTIMPL;
  72   }
  73
  74   STDMETHOD(RangeFromPoint)(struct UiaPoint point,
  75                             ITextRangeProvider** ret) {
  76     return E_NOTIMPL;
  77   }
  78
  79   STDMETHOD(get_DocumentRange)(ITextRangeProvider** ret) {
  80     return E_NOTIMPL;
  81   }
  82
  83   STDMETHOD(get_SupportedTextSelection)(enum SupportedTextSelection* ret) {
  84     return E_NOTIMPL;
  85   }
  86
  87  private:
  88   bool editable_;
  89   string16 value_;
  90 };
  91
  92 }  // win
  93 }  // base
  94
  95 #endif  // UI_BASE_WIN_ACCESSIBILITY_MISC_UTILS_H_