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) override;
  48
  49   //
  50   // IValueProvider methods not implemented.
  51   //
  52   STDMETHOD(SetValue)(const wchar_t* val) override { return E_NOTIMPL; }
  53
  54   STDMETHOD(get_Value)(BSTR* value) override;
  55
  56   //
  57   // ITextProvider methods.
  58   //
  59   STDMETHOD(GetSelection)(SAFEARRAY** ret) override { return E_NOTIMPL; }
  60
  61   STDMETHOD(GetVisibleRanges)(SAFEARRAY** ret) override { return E_NOTIMPL; }
  62
  63   STDMETHOD(RangeFromChild)(IRawElementProviderSimple* child,
  64                             ITextRangeProvider** ret) override {
  65     return E_NOTIMPL;
  66   }
  67
  68   STDMETHOD(RangeFromPoint)(struct UiaPoint point,
  69                             ITextRangeProvider** ret) override {
  70     return E_NOTIMPL;
  71   }
  72
  73   STDMETHOD(get_DocumentRange)(ITextRangeProvider** ret) override {
  74     return E_NOTIMPL;
  75   }
  76
  77   STDMETHOD(get_SupportedTextSelection)(
  78       enum SupportedTextSelection* ret) override {
  79     return E_NOTIMPL;
  80   }
  81
  82  private:
  83   bool editable_;
  84   string16 value_;
  85 };
  86
  87 }  // win
  88 }  // base
  89
  90 #endif  // UI_BASE_WIN_ACCESSIBILITY_MISC_UTILS_H_