accessible/xpcom/xpcAccessibleGeneric.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_a11y_xpcAccessibleGeneric_h_
   8 #define mozilla_a11y_xpcAccessibleGeneric_h_
   9
  10 #include "xpcAccessible.h"
  11 #include "xpcAccessibleHyperLink.h"
  12 #include "xpcAccessibleSelectable.h"
  13 #include "xpcAccessibleValue.h"
  14
  15 #include "LocalAccessible.h"
  16 #include "mozilla/a11y/Accessible.h"
  17 #include "mozilla/a11y/RemoteAccessible.h"
  18
  19 namespace mozilla {
  20 namespace a11y {
  21
  22 /**
  23  * XPCOM wrapper around Accessible class.
  24  */
  25 class xpcAccessibleGeneric : public xpcAccessible,
  26                              public xpcAccessibleHyperLink,
  27                              public xpcAccessibleSelectable,
  28                              public xpcAccessibleValue {
  29  public:
  30   explicit xpcAccessibleGeneric(Accessible* aInternal)
  31       : mIntl(aInternal), mSupportedIfaces(0) {
  32     if (aInternal->IsSelect()) mSupportedIfaces |= eSelectable;
  33     if (aInternal->HasNumericValue()) mSupportedIfaces |= eValue;
  34     if (aInternal->IsLink()) mSupportedIfaces |= eHyperLink;
  35   }
  36
  37   NS_DECL_ISUPPORTS
  38
  39   // nsIAccessible
  40   LocalAccessible* ToInternalAccessible() final;
  41   Accessible* ToInternalGeneric() final { return mIntl; }
  42
  43   // xpcAccessibleGeneric
  44   virtual void Shutdown();
  45
  46  protected:
  47   virtual ~xpcAccessibleGeneric();
  48
  49   Accessible* mIntl;
  50
  51   enum {
  52     eSelectable = 1 << 0,
  53     eValue = 1 << 1,
  54     eHyperLink = 1 << 2,
  55     eText = 1 << 3
  56   };
  57   uint8_t mSupportedIfaces;
  58
  59  private:
  60   friend class LocalAccessible;
  61   friend class xpcAccessible;
  62   friend class xpcAccessibleHyperLink;
  63   friend class xpcAccessibleSelectable;
  64   friend class xpcAccessibleValue;
  65
  66   xpcAccessibleGeneric(const xpcAccessibleGeneric&) = delete;
  67   xpcAccessibleGeneric& operator=(const xpcAccessibleGeneric&) = delete;
  68 };
  69
  70 inline LocalAccessible* xpcAccessible::Intl() {
  71   if (!static_cast<xpcAccessibleGeneric*>(this)->mIntl) {
  72     return nullptr;
  73   }
  74   return static_cast<xpcAccessibleGeneric*>(this)->mIntl->AsLocal();
  75 }
  76
  77 inline Accessible* xpcAccessible::IntlGeneric() {
  78   return static_cast<xpcAccessibleGeneric*>(this)->mIntl;
  79 }
  80
  81 inline Accessible* xpcAccessibleHyperLink::Intl() {
  82   return static_cast<xpcAccessibleGeneric*>(this)->mIntl;
  83 }
  84
  85 inline Accessible* xpcAccessibleSelectable::Intl() {
  86   return static_cast<xpcAccessibleGeneric*>(this)->mIntl;
  87 }
  88
  89 inline Accessible* xpcAccessibleValue::Intl() {
  90   return static_cast<xpcAccessibleGeneric*>(this)->mIntl;
  91 }
  92
  93 }  // namespace a11y
  94 }  // namespace mozilla
  95
  96 #endif