DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (5350524bb654)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_a11y_xpcAccessibleDocument_h_
#define mozilla_a11y_xpcAccessibleDocument_h_

#include "nsIAccessibleDocument.h"

#include "DocAccessible.h"
#include "nsAccessibilityService.h"
#include "xpcAccessibleApplication.h"
#include "xpcAccessibleHyperText.h"

namespace mozilla {
namespace a11y {

/**
 * XPCOM wrapper around DocAccessible class.
 */
class xpcAccessibleDocument : public xpcAccessibleHyperText,
                              public nsIAccessibleDocument
{
public:
  explicit xpcAccessibleDocument(DocAccessible* aIntl) :
    xpcAccessibleHyperText(aIntl), mCache(kDefaultCacheLength), mRemote(false) { }

  xpcAccessibleDocument(ProxyAccessible* aProxy, uint32_t aInterfaces) :
    xpcAccessibleHyperText(aProxy, aInterfaces), mCache(kDefaultCacheLength),
    mRemote(true) {}

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(xpcAccessibleDocument,
                                           xpcAccessibleGeneric)

  // nsIAccessibleDocument
  NS_IMETHOD GetURL(nsAString& aURL) final override;
  NS_IMETHOD GetTitle(nsAString& aTitle) final override;
  NS_IMETHOD GetMimeType(nsAString& aType) final override;
  NS_IMETHOD GetDocType(nsAString& aType) final override;
  NS_IMETHOD GetDOMDocument(nsIDOMDocument** aDOMDocument) final override;
  NS_IMETHOD GetWindow(mozIDOMWindowProxy** aDOMWindow) final override;
  NS_IMETHOD GetParentDocument(nsIAccessibleDocument** aDocument)
    final override;
  NS_IMETHOD GetChildDocumentCount(uint32_t* aCount) final override;
  NS_IMETHOD GetChildDocumentAt(uint32_t aIndex,
                                nsIAccessibleDocument** aDocument)
    final override;
  NS_IMETHOD GetVirtualCursor(nsIAccessiblePivot** aVirtualCursor)
    final override;

  /**
   * Return XPCOM wrapper for the internal accessible.
   */
  xpcAccessibleGeneric* GetAccessible(Accessible* aAccessible);
  xpcAccessibleGeneric* GetXPCAccessible(ProxyAccessible* aProxy);

  virtual void Shutdown() override;

protected:
  virtual ~xpcAccessibleDocument() {}

private:
  DocAccessible* Intl()
  {
    if (Accessible* acc = mIntl.AsAccessible()) {
      return acc->AsDoc();
    }

    return nullptr;
  }

  void NotifyOfShutdown(Accessible* aAccessible)
  {
    MOZ_ASSERT(!mRemote);
    xpcAccessibleGeneric* xpcAcc = mCache.GetWeak(aAccessible);
    if (xpcAcc)
      xpcAcc->Shutdown();

    mCache.Remove(aAccessible);
  }

  void NotifyOfShutdown(ProxyAccessible* aProxy)
  {
    MOZ_ASSERT(mRemote);
    xpcAccessibleGeneric* acc = mCache.GetWeak(aProxy);
    if (acc) {
      acc->Shutdown();
    }

    mCache.Remove(aProxy);
  }

  friend class DocManager;
  friend class DocAccessible;
  friend class ProxyAccessible;
  friend class ProxyAccessibleBase<ProxyAccessible>;

  xpcAccessibleDocument(const xpcAccessibleDocument&) = delete;
  xpcAccessibleDocument& operator =(const xpcAccessibleDocument&) = delete;

  nsRefPtrHashtable<nsPtrHashKey<const void>, xpcAccessibleGeneric> mCache;
  bool mRemote;
};

inline xpcAccessibleGeneric*
ToXPC(Accessible* aAccessible)
{
  if (!aAccessible)
    return nullptr;

  if (aAccessible->IsApplication())
    return XPCApplicationAcc();

  xpcAccessibleDocument* xpcDoc =
    GetAccService()->GetXPCDocument(aAccessible->Document());
  return xpcDoc ? xpcDoc->GetAccessible(aAccessible) : nullptr;
}

xpcAccessibleGeneric* ToXPC(AccessibleOrProxy aAcc);

inline xpcAccessibleHyperText*
ToXPCText(HyperTextAccessible* aAccessible)
{
  if (!aAccessible)
    return nullptr;

  xpcAccessibleDocument* xpcDoc =
    GetAccService()->GetXPCDocument(aAccessible->Document());
  return static_cast<xpcAccessibleHyperText*>(xpcDoc->GetAccessible(aAccessible));
}

inline xpcAccessibleDocument*
ToXPCDocument(DocAccessible* aAccessible)
{
  return GetAccService()->GetXPCDocument(aAccessible);
}

inline xpcAccessibleDocument*
ToXPCDocument(DocAccessibleParent* aAccessible)
{
  return GetAccService()->GetXPCDocument(aAccessible);
}

} // namespace a11y
} // namespace mozilla

#endif