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// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc.
#include "core/fpdfdoc/cpdf_bookmarktree.h"
#include <utility>
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_document.h"
CPDF_BookmarkTree::CPDF_BookmarkTree(const CPDF_Document* doc)
: document_(doc) {}
CPDF_BookmarkTree::~CPDF_BookmarkTree() = default;
CPDF_Bookmark CPDF_BookmarkTree::GetFirstChild(
const CPDF_Bookmark& parent) const {
const CPDF_Dictionary* parent_dict = parent.GetDict();
if (parent_dict)
return CPDF_Bookmark(parent_dict->GetDictFor("First"));
const CPDF_Dictionary* root = document_->GetRoot();
if (!root)
return CPDF_Bookmark();
RetainPtr<const CPDF_Dictionary> outlines = root->GetDictFor("Outlines");
return outlines ? CPDF_Bookmark(outlines->GetDictFor("First"))
: CPDF_Bookmark();
CPDF_Bookmark CPDF_BookmarkTree::GetNextSibling(
const CPDF_Bookmark& bookmark) const {
const CPDF_Dictionary* dict = bookmark.GetDict();
if (!dict)
return CPDF_Bookmark();
RetainPtr<const CPDF_Dictionary> next = dict->GetDictFor("Next");
return next != dict ? CPDF_Bookmark(std::move(next)) : CPDF_Bookmark();