Introduce BookmarkClient interface to abstract embedder

chrome/browser/bookmarks/chrome_bookmark_client.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 "chrome/browser/bookmarks/chrome_bookmark_client.h"
+
+#include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/favicon/favicon_changed_details.h"
+#include "chrome/browser/favicon/favicon_service.h"
+#include "chrome/browser/favicon/favicon_service_factory.h"
+#include "chrome/browser/history/history_service.h"
+#include "chrome/browser/history/history_service_factory.h"
+#include "chrome/browser/history/url_database.h"
+#include "chrome/browser/profiles/profile.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_source.h"
+#include "content/public/browser/user_metrics.h"
+
+ChromeBookmarkClient::ChromeBookmarkClient(Profile* profile, bool index_urls)
+    : profile_(profile), model_(new BookmarkModel(this, index_urls)) {
+  // Listen for changes to favicons so that we can update the favicon of the
+  // node appropriately.
+  registrar_.Add(this,
+                 chrome::NOTIFICATION_FAVICON_CHANGED,
+                 content::Source<Profile>(profile_));
+}
+
+ChromeBookmarkClient::~ChromeBookmarkClient() {
+  registrar_.RemoveAll();
+}
+
+base::CancelableTaskTracker::TaskId ChromeBookmarkClient::GetFaviconImageForURL(
+    const GURL& page_url,
+    int icon_types,
+    int desired_size_in_dip,
+    const FaviconImageCallback& callback,
+    base::CancelableTaskTracker* tracker) {
+  FaviconService* favicon_service =
+      FaviconServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
+  if (!favicon_service)
+    return base::CancelableTaskTracker::kBadTaskId;
+  return favicon_service->GetFaviconImageForURL(
+      FaviconService::FaviconForURLParams(
+          page_url, icon_types, desired_size_in_dip),
+      callback,
+      tracker);
+}
+
+bool ChromeBookmarkClient::SupportsTypedCountForNodes() {
+  return true;
+}
+
+void ChromeBookmarkClient::GetTypedCountForNodes(
+    const NodeSet& nodes,
+    NodeTypedCountPairs* node_typed_count_pairs) {
+  HistoryService* history_service =
+      HistoryServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
+  history::URLDatabase* url_db =
+      history_service ? history_service->InMemoryDatabase() : NULL;
+  for (NodeSet::const_iterator i = nodes.begin(); i != nodes.end(); ++i) {
+    int typed_count = 0;
+
+    // If |url_db| is the InMemoryDatabase, it might not cache all URLRows, but
+    // it guarantees to contain those with |typed_count| > 0. Thus, if we cannot
+    // fetch the URLRow, it is safe to assume that its |typed_count| is 0.
+    history::URLRow url;
+    if (url_db && url_db->GetRowForURL((*i)->url(), &url))
+      typed_count = url.typed_count();
+
+    NodeTypedCountPair pair(*i, typed_count);
+    node_typed_count_pairs->push_back(pair);
+  }
+}
+
+void ChromeBookmarkClient::RecordAction(const base::UserMetricsAction& action) {
+  content::RecordAction(action);
+}
+
+void ChromeBookmarkClient::NotifyHistoryAboutRemovedBookmarks(
+    const std::set<GURL>& removed_bookmark_urls) {
+  if (removed_bookmark_urls.empty()) {
+    // No point in sending out notification if the starred state didn't change.
+    return;
+  }
+
+  HistoryService* history_service =
+      HistoryServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
+  if (history_service)
+    history_service->URLsNoLongerBookmarked(removed_bookmark_urls);
+}
+
+void ChromeBookmarkClient::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  switch (type) {
+    case chrome::NOTIFICATION_FAVICON_CHANGED: {
+      content::Details<FaviconChangedDetails> favicon_details(details);
+      model_->OnFaviconChanged(favicon_details->urls);
+      break;
+    }
+
+    default:
+      NOTREACHED();
+      break;
+  }
+}
+
+void ChromeBookmarkClient::Shutdown() {
+  model_->Shutdown();
+}