Fix componentization of chrome/browser/bookmarks

components/bookmarks/managed/managed_bookmark_service.cc

+// Copyright 2015 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/bookmarks/managed/managed_bookmark_service.h"
+
+#include <stdlib.h>
+#include <vector>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "base/memory/scoped_vector.h"
+#include "base/strings/string16.h"
+#include "base/values.h"
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "components/bookmarks/browser/bookmark_utils.h"
+#include "components/bookmarks/managed/managed_bookmarks_tracker.h"
+#include "grit/components_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace bookmarks {
+namespace {
+
+// BookmarkPermanentNodeLoader initializes a BookmarkPermanentNode from a JSON
+// representation, title id and starting node id.
+class BookmarkPermanentNodeLoader {
+ public:
+  BookmarkPermanentNodeLoader(scoped_ptr<BookmarkPermanentNode> node,
+                              scoped_ptr<base::ListValue> initial_bookmarks,
+                              int title_id)
+      : node_(node.Pass()),
+        initial_bookmarks_(initial_bookmarks.Pass()),
+        title_id_(title_id) {
+    DCHECK(node_);
+  }
+
+  ~BookmarkPermanentNodeLoader() {}
+
+  // Initializes |node_| from |initial_bookmarks_| and |title_id_| and returns
+  // it. The ids are assigned starting at |next_node_id| and the value is
+  // updated as a side-effect.
+  scoped_ptr<BookmarkPermanentNode> Load(int64* next_node_id) {
+    node_->set_id(*next_node_id);
+    *next_node_id = ManagedBookmarksTracker::LoadInitial(
+        node_.get(), initial_bookmarks_.get(), node_->id() + 1);
+    node_->set_visible(!node_->empty());
+    node_->SetTitle(l10n_util::GetStringUTF16(title_id_));
+    return node_.Pass();
+  }
+
+ private:
+  scoped_ptr<BookmarkPermanentNode> node_;
+  scoped_ptr<base::ListValue> initial_bookmarks_;
+  int title_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(BookmarkPermanentNodeLoader);
+};
+
+// Returns a list of initialized BookmarkPermanentNodes using |next_node_id| to
+// start assigning id. |next_node_id| is updated as a side effect of calling
+// this method.
+BookmarkPermanentNodeList LoadExtraNodes(
+    ScopedVector<BookmarkPermanentNodeLoader> loaders,
+    int64* next_node_id) {
+  BookmarkPermanentNodeList extra_nodes;
+  for (const auto& loader : loaders)
+    extra_nodes.push_back(loader->Load(next_node_id).release());
+  return extra_nodes.Pass();
+}
+
+}  // namespace
+
+ManagedBookmarkService::ManagedBookmarkService(
+    PrefService* prefs,
+    const GetManagementDomainCallback& callback)
+    : prefs_(prefs),
+      bookmark_model_(nullptr),
+      managed_domain_callback_(callback),
+      managed_node_(nullptr),
+      supervised_node_(nullptr) {}
+
+ManagedBookmarkService::~ManagedBookmarkService() {
+  DCHECK(!bookmark_model_);
+}
+
+void ManagedBookmarkService::BookmarkModelCreated(
+    BookmarkModel* bookmark_model) {
+  DCHECK(bookmark_model);
+  DCHECK(!bookmark_model_);
+  bookmark_model_ = bookmark_model;
+  bookmark_model_->AddObserver(this);
+
+  managed_bookmarks_tracker_.reset(new ManagedBookmarksTracker(
+      bookmark_model_, prefs_, false /* is_supervised */,
+      managed_domain_callback_));
+
+  GetManagementDomainCallback unbound_callback;
+  supervised_bookmarks_tracker_.reset(new ManagedBookmarksTracker(
+      bookmark_model_, prefs_, true /* is_supervised */, unbound_callback));
+}
+
+LoadExtraCallback ManagedBookmarkService::GetLoadExtraNodesCallback() {
+  // Create two BookmarkPermanentNode with a temporary id of 0. They will be
+  // populated and assigned proper ids in the LoadExtraNodes callback. Until
+  // then, they are owned by the returned closure.
+  scoped_ptr<BookmarkPermanentNode> managed(new BookmarkPermanentNode(0));
+  scoped_ptr<BookmarkPermanentNode> supervised(new BookmarkPermanentNode(0));
+
+  managed_node_ = managed.get();
+  supervised_node_ = supervised.get();
+
+  ScopedVector<BookmarkPermanentNodeLoader> loaders;
+  loaders.push_back(new BookmarkPermanentNodeLoader(
+      managed.Pass(), managed_bookmarks_tracker_->GetInitialManagedBookmarks(),
+      IDS_BOOKMARK_BAR_MANAGED_FOLDER_DEFAULT_NAME));
+  loaders.push_back(new BookmarkPermanentNodeLoader(
+      supervised.Pass(),
+      supervised_bookmarks_tracker_->GetInitialManagedBookmarks(),
+      IDS_BOOKMARK_BAR_SUPERVISED_FOLDER_DEFAULT_NAME));
+
+  return base::Bind(&LoadExtraNodes, base::Passed(&loaders));
+}
+
+bool ManagedBookmarkService::CanSetPermanentNodeTitle(
+    const BookmarkNode* node) {
+  // |managed_node_| can have its title updated if the user signs in or out,
+  // since the name of the managed domain can appear in it. Also both
+  // |managed_node_| and |supervised_node_| can have their title updated on
+  // locale changes (http://crbug.com/459448).
+  if (node == managed_node_ || node == supervised_node_)
+    return true;
+  return !IsDescendantOf(node, managed_node_) &&
+         !IsDescendantOf(node, supervised_node_);
+}
+
+bool ManagedBookmarkService::CanSyncNode(const BookmarkNode* node) {
+  return !IsDescendantOf(node, managed_node_) &&
+         !IsDescendantOf(node, supervised_node_);
+}
+
+bool ManagedBookmarkService::CanBeEditedByUser(const BookmarkNode* node) {
+  return !IsDescendantOf(node, managed_node_) &&
+         !IsDescendantOf(node, supervised_node_);
+}
+
+void ManagedBookmarkService::Shutdown() {
+  Cleanup();
+}
+
+void ManagedBookmarkService::BookmarkModelChanged() {}
+
+void ManagedBookmarkService::BookmarkModelLoaded(BookmarkModel* bookmark_model,
+                                                 bool ids_reassigned) {
+  BaseBookmarkModelObserver::BookmarkModelLoaded(bookmark_model,
+                                                 ids_reassigned);
+  // Start tracking the managed and supervised bookmarks. This will detect any
+  // changes that may have occurred while the initial managed and supervised
+  // bookmarks were being loaded on the background.
+  managed_bookmarks_tracker_->Init(managed_node_);
+  supervised_bookmarks_tracker_->Init(supervised_node_);
+}
+
+void ManagedBookmarkService::BookmarkModelBeingDeleted(
+    BookmarkModel* bookmark_model) {
+  Cleanup();
+}
+
+void ManagedBookmarkService::Cleanup() {
+  if (bookmark_model_) {
+    bookmark_model_->RemoveObserver(this);
+    bookmark_model_ = nullptr;
+  }
+
+  managed_bookmarks_tracker_.reset();
+  supervised_bookmarks_tracker_.reset();
+
+  managed_node_ = nullptr;
+  supervised_node_ = nullptr;
+}
+
+}  // namespace bookmarks