/* -*- 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/. */

#include "mozilla/a11y/DocAccessibleChildBase.h"

#include "mozilla/a11y/ProxyAccessible.h"

#include "Accessible-inl.h"

namespace mozilla {

namespace a11y {

/* static */ uint32_t

DocAccessibleChildBase::InterfacesFor(Accessible* aAcc)

{

  uint32_t interfaces = 0;

  if (aAcc->IsHyperText() && aAcc->AsHyperText()->IsTextRole())

    interfaces |= Interfaces::HYPERTEXT;

  if (aAcc->IsLink())

    interfaces |= Interfaces::HYPERLINK;

  if (aAcc->HasNumericValue())

    interfaces |= Interfaces::VALUE;

  if (aAcc->IsImage())

    interfaces |= Interfaces::IMAGE;

  if (aAcc->IsTable()) {

    interfaces |= Interfaces::TABLE;

  }

  if (aAcc->IsTableCell())

    interfaces |= Interfaces::TABLECELL;

  if (aAcc->IsDoc())

    interfaces |= Interfaces::DOCUMENT;

  if (aAcc->IsSelect()) {

    interfaces |= Interfaces::SELECTION;

  }

  if (aAcc->ActionCount()) {

    interfaces |= Interfaces::ACTION;

  }

  return interfaces;

}

/* static */ void

DocAccessibleChildBase::SerializeTree(Accessible* aRoot,

                                      nsTArray<AccessibleData>& aTree)

{

  uint64_t id = reinterpret_cast<uint64_t>(aRoot->UniqueID());

#if defined(XP_WIN)

  int32_t msaaId = AccessibleWrap::GetChildIDFor(aRoot);

#endif

  a11y::role role = aRoot->Role();

  uint32_t childCount = aRoot->ChildCount();

  uint32_t interfaces = InterfacesFor(aRoot);

  // OuterDocAccessibles are special because we don't want to serialize the

  // child doc here, we'll call PDocAccessibleConstructor in

  // NotificationController.

  MOZ_ASSERT(!aRoot->IsDoc(), "documents shouldn't be serialized");

  if (aRoot->IsOuterDoc()) {

    childCount = 0;

  }

#if defined(XP_WIN)

  aTree.AppendElement(AccessibleData(id, msaaId, role, childCount, interfaces));

#else

  aTree.AppendElement(AccessibleData(id, role, childCount, interfaces));

#endif

  for (uint32_t i = 0; i < childCount; i++) {

    SerializeTree(aRoot->GetChildAt(i), aTree);

  }

}

void

DocAccessibleChildBase::InsertIntoIpcTree(Accessible* aParent,

                                          Accessible* aChild,

                                          uint32_t aIdxInParent)

{

  uint64_t parentID = aParent->IsDoc() ?

    0 : reinterpret_cast<uint64_t>(aParent->UniqueID());

  nsTArray<AccessibleData> shownTree;

  ShowEventData data(parentID, aIdxInParent, shownTree, true);

  SerializeTree(aChild, data.NewTree());

  MaybeSendShowEvent(data, false);

}

void

DocAccessibleChildBase::ShowEvent(AccShowEvent* aShowEvent)

{

  Accessible* parent = aShowEvent->Parent();

  uint64_t parentID = parent->IsDoc() ? 0 : reinterpret_cast<uint64_t>(parent->UniqueID());

  uint32_t idxInParent = aShowEvent->GetAccessible()->IndexInParent();

  nsTArray<AccessibleData> shownTree;

  ShowEventData data(parentID, idxInParent, shownTree, false);

  SerializeTree(aShowEvent->GetAccessible(), data.NewTree());

  MaybeSendShowEvent(data, aShowEvent->IsFromUserInput());

}

} // namespace a11y

} // namespace mozilla