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 "ui/base/ui_base_export.h"
  13
  14 namespace base {
  15 namespace win {
  16
  17   // UIA Text provider implementation for edit controls.
  18 class 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_