components/enhanced_bookmarks/enhanced_bookmark_utils.cc

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/enhanced_bookmarks/enhanced_bookmark_utils.h"

#include "components/bookmarks/browser/bookmark_model.h"
#include "components/variations/variations_associated_data.h"

using bookmarks::BookmarkModel;
using bookmarks::BookmarkNode;

namespace enhanced_bookmarks {

const char kFieldTrialName[] = "EnhancedBookmarks";

std::vector<const BookmarkNode*> PrimaryPermanentNodes(BookmarkModel* model) {
  DCHECK(model->loaded());
  std::vector<const BookmarkNode*> nodes;
  nodes.push_back(model->mobile_node());
  nodes.push_back(model->bookmark_bar_node());
  nodes.push_back(model->other_node());
  return nodes;
}

std::vector<const BookmarkNode*> RootLevelFolders(BookmarkModel* model) {
  std::vector<const BookmarkNode*> root_level_folders;

  // Find the direct folder children of the primary permanent nodes.
  std::vector<const BookmarkNode*> primary_permanent_nodes =
      PrimaryPermanentNodes(model);
  for (const BookmarkNode* parent : primary_permanent_nodes) {
    int child_count = parent->child_count();
    for (int i = 0; i < child_count; ++i) {
      const BookmarkNode* node = parent->GetChild(i);
      if (node->is_folder() && node->IsVisible())
        root_level_folders.push_back(node);
    }
  }
  return root_level_folders;
}

bool IsPrimaryPermanentNode(const BookmarkNode* node, BookmarkModel* model) {
  std::vector<const BookmarkNode*> primary_nodes(PrimaryPermanentNodes(model));
  if (std::find(primary_nodes.begin(), primary_nodes.end(), node) !=
      primary_nodes.end()) {
    return true;
  }
  return false;
}

const BookmarkNode* RootLevelFolderForNode(const BookmarkNode* node,
                                           BookmarkModel* model) {
  // This helper function doesn't work for managed bookmarks. This checks that
  // |node| is editable by the user, which currently covers all the other
  // bookmarks except the managed bookmarks.
  DCHECK(model->client()->CanBeEditedByUser(node));

  const std::vector<const BookmarkNode*> root_folders(RootLevelFolders(model));
  const BookmarkNode* top = node;
  while (top &&
         std::find(root_folders.begin(), root_folders.end(), top) ==
             root_folders.end()) {
    top = top->parent();
  }
  return top;
}

ViewMode GetDefaultViewMode() {
  std::string default_view_mode = variations::GetVariationParamValue(
      enhanced_bookmarks::kFieldTrialName, "DefaultViewMode");

  if (default_view_mode == "List") {
    return ViewMode::LIST;
  } else if (default_view_mode == "Grid") {
    return ViewMode::GRID;
  }

  // If finch data is not available or has an invalid value, we fall back to
  // ViewMode::GRID.
  return ViewMode::GRID;
}

}  // namespace enhanced_bookmarks