Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/history_report/data_observer.cc

Index: chrome/browser/android/history_report/data_observer.cc
diff --git a/chrome/browser/android/history_report/data_observer.cc b/chrome/browser/android/history_report/data_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2058fdcaed1ae9d85edc5f80937d9d1900cb94da
--- /dev/null
+++ b/chrome/browser/android/history_report/data_observer.cc
@@ -0,0 +1,144 @@
+// 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 "chrome/browser/android/history_report/data_observer.h"
+
+#include "base/time/time.h"
+#include "chrome/browser/android/history_report/delta_file_commons.h"
+#include "chrome/browser/android/history_report/delta_file_service.h"
+#include "chrome/browser/android/history_report/usage_report_util.h"
+#include "chrome/browser/android/history_report/usage_reports_buffer_service.h"
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "components/history/core/browser/history_service.h"
+
+using bookmarks::BookmarkModel;
+using bookmarks::BookmarkNode;
+
+namespace history_report {
+
+DataObserver::DataObserver(
+    base::Callback<void(void)> data_changed_callback,
+    base::Callback<void(void)> data_cleared_callback,
+    base::Callback<void(void)> stop_reporting_callback,
+    DeltaFileService* delta_file_service,
+    UsageReportsBufferService* usage_reports_buffer_service,
+    BookmarkModel* bookmark_model,
+    history::HistoryService* history_service)
+    : data_changed_callback_(data_changed_callback),
+      data_cleared_callback_(data_cleared_callback),
+      stop_reporting_callback_(stop_reporting_callback),
+      delta_file_service_(delta_file_service),
+      usage_reports_buffer_service_(usage_reports_buffer_service) {
+  bookmark_model->AddObserver(this);
+  history_service->AddObserver(this);
+}
+
+DataObserver::~DataObserver() {}
+
+void DataObserver::BookmarkModelLoaded(BookmarkModel* model,
+                                       bool ids_reassigned) {}
+
+void DataObserver::BookmarkModelBeingDeleted(BookmarkModel* model) {}
+
+void DataObserver::BookmarkNodeMoved(BookmarkModel* model,
+                                     const BookmarkNode* old_parent,
+                                     int old_index,
+                                     const BookmarkNode* new_parent,
+                                     int new_index) {}
+
+void DataObserver::BookmarkNodeAdded(BookmarkModel* model,
+                                     const BookmarkNode* parent,
+                                     int index) {
+  delta_file_service_->PageAdded(parent->GetChild(index)->url());
+  data_changed_callback_.Run();
+}
+
+void DataObserver::BookmarkNodeRemoved(BookmarkModel* model,
+                                       const BookmarkNode* parent,
+                                       int old_index,
+                                       const BookmarkNode* node,
+                                       const std::set<GURL>& removed_urls) {
+  DeleteBookmarks(removed_urls);
+}
+
+void DataObserver::BookmarkAllUserNodesRemoved(
+    BookmarkModel* model,
+    const std::set<GURL>& removed_urls) {
+  DeleteBookmarks(removed_urls);
+}
+
+void DataObserver::BookmarkNodeChanged(BookmarkModel* model,
+                                       const BookmarkNode* node) {
+  delta_file_service_->PageAdded(node->url());
+  data_changed_callback_.Run();
+}
+
+void DataObserver::BookmarkNodeFaviconChanged(BookmarkModel* model,
+                                              const BookmarkNode* node) {}
+
+void DataObserver::BookmarkNodeChildrenReordered(BookmarkModel* model,
+                                                 const BookmarkNode* node) {}
+
+void DataObserver::DeleteBookmarks(const std::set<GURL>& removed_urls) {
+  for (std::set<GURL>::const_iterator it = removed_urls.begin();
+       it != removed_urls.end();
+       ++it) {
+    delta_file_service_->PageDeleted(*it);
+  }
+  if (!removed_urls.empty())
+    data_changed_callback_.Run();
+}
+
+void DataObserver::OnURLVisited(history::HistoryService* history_service,
+                                ui::PageTransition transition,
+                                const history::URLRow& row,
+                                const history::RedirectList& redirects,
+                                base::Time visit_time) {
+  if (row.hidden())
+    return;
+
+  delta_file_service_->PageAdded(row.url());
+  // TODO(haaawk): check if this is really a data change not just a
+  //               visit of already seen page.
+  data_changed_callback_.Run();
+  std::string id = DeltaFileEntryWithData::UrlToId(row.url().spec());
+  usage_reports_buffer_service_->AddVisit(
+      id,
+      visit_time.ToJavaTime(),
+      usage_report_util::IsTypedVisit(transition));
+  // We stop any usage reporting to wait for gmscore to query the provider
+  // for this url. We do not want to report usage for a URL which might
+  // not be known to gmscore.
+  stop_reporting_callback_.Run();
+}
+
+void DataObserver::OnURLsModified(history::HistoryService* history_service,
+                                  const history::URLRows& changed_urls) {
+  for (const auto& row : changed_urls) {
+    if (!row.hidden())
+      delta_file_service_->PageAdded(row.url());
+  }
+
+  data_changed_callback_.Run();
+}
+
+void DataObserver::OnURLsDeleted(history::HistoryService* history_service,
+                                 bool all_history,
+                                 bool expired,
+                                 const history::URLRows& deleted_rows,
+                                 const std::set<GURL>& favicon_urls) {
+  if (all_history) {
+    delta_file_service_->Clear();
+    data_cleared_callback_.Run();
+  } else {
+    for (const auto& row : deleted_rows) {
+      if (!row.hidden())
+        delta_file_service_->PageDeleted(row.url());
+    }
+
+    data_changed_callback_.Run();
+  }
+}
+
+}  // namespace history_report