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// Copyright (c) 2012 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/ui/webui/ntp/suggestions_source_top_sites.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "chrome/browser/history/history_service.h"
#include "chrome/browser/history/history_service_factory.h"
#include "chrome/browser/history/top_sites.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/browser/ui/webui/ntp/suggestions_combiner.h"
#include "chrome/common/chrome_switches.h"
#include "components/history/core/browser/visit_filter.h"
namespace {
// The weight used by the combiner to determine which ratio of suggestions
// should be obtained from this source.
const int kSuggestionsTopListWeight = 1;
} // namespace
SuggestionsSourceTopSites::SuggestionsSourceTopSites()
: combiner_(NULL),
debug_(false) {
}
SuggestionsSourceTopSites::~SuggestionsSourceTopSites() {
STLDeleteElements(&items_);
}
void SuggestionsSourceTopSites::SetDebug(bool enable) {
debug_ = enable;
}
inline int SuggestionsSourceTopSites::GetWeight() {
return kSuggestionsTopListWeight;
}
int SuggestionsSourceTopSites::GetItemCount() {
return items_.size();
}
base::DictionaryValue* SuggestionsSourceTopSites::PopItem() {
if (items_.empty())
return NULL;
base::DictionaryValue* item = items_.front();
items_.pop_front();
return item;
}
void SuggestionsSourceTopSites::FetchItems(Profile* profile) {
DCHECK(combiner_);
STLDeleteElements(&items_);
history_tracker_.TryCancelAll();
HistoryService* history = HistoryServiceFactory::GetForProfile(
profile, Profile::EXPLICIT_ACCESS);
// |history| may be null during unit tests.
if (history) {
history::VisitFilter time_filter;
time_filter.SetFilterTime(base::Time::Now());
time_filter.SetFilterWidth(GetFilterWidth());
time_filter.set_sorting_order(GetSortingOrder());
history->QueryFilteredURLs(
0,
time_filter,
debug_,
base::Bind(&SuggestionsSourceTopSites::OnSuggestionsUrlsAvailable,
base::Unretained(this)),
&history_tracker_);
}
}
void SuggestionsSourceTopSites::SetCombiner(SuggestionsCombiner* combiner) {
DCHECK(!combiner_);
combiner_ = combiner;
}
void SuggestionsSourceTopSites::OnSuggestionsUrlsAvailable(
const history::FilteredURLList* data) {
DCHECK(data);
DCHECK(combiner_);
for (size_t i = 0; i < data->size(); i++) {
const history::FilteredURL& suggested_url = (*data)[i];
if (suggested_url.url.is_empty())
continue;
base::DictionaryValue* page_value = new base::DictionaryValue();
NewTabUI::SetUrlTitleAndDirection(page_value,
suggested_url.title,
suggested_url.url);
page_value->SetDouble("score", suggested_url.score);
if (debug_) {
if (suggested_url.extended_info.total_visits) {
page_value->SetInteger("extended_info.total visits",
suggested_url.extended_info.total_visits);
}
if (suggested_url.extended_info.visits) {
page_value->SetInteger("extended_info.visits",
suggested_url.extended_info.visits);
}
if (suggested_url.extended_info.duration_opened) {
page_value->SetInteger("extended_info.duration opened",
suggested_url.extended_info.duration_opened);
}
if (!suggested_url.extended_info.last_visit_time.is_null()) {
base::TimeDelta deltaTime =
base::Time::Now() - suggested_url.extended_info.last_visit_time;
page_value->SetInteger("extended_info.seconds since last visit",
deltaTime.InSeconds());
}
}
items_.push_back(page_value);
}
combiner_->OnItemsReady();
}
// static
base::TimeDelta SuggestionsSourceTopSites::GetFilterWidth() {
return base::TimeDelta::FromHours(1);
}
// static
history::VisitFilter::SortingOrder
SuggestionsSourceTopSites::GetSortingOrder() {
return history::VisitFilter::ORDER_BY_RECENCY;
}
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