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// Copyright 2013 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 "ui/app_list/search_controller.h"
#include <algorithm>
#include <vector>
#include "base/bind.h"
#include "base/memory/scoped_ptr.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/user_metrics.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/app_list/app_list_constants.h"
#include "ui/app_list/search/history.h"
#include "ui/app_list/search_box_model.h"
#include "ui/app_list/search_provider.h"
#include "ui/app_list/search_result.h"
namespace {
// Maximum time (in milliseconds) to wait to the search providers to finish.
const int kStopTimeMS = 1500;
}
namespace app_list {
SearchController::SearchController(SearchBoxModel* search_box,
AppListModel::SearchResults* results,
History* history)
: search_box_(search_box),
dispatching_query_(false),
mixer_(new Mixer(results)),
history_(history),
is_voice_query_(false) {
}
SearchController::~SearchController() {
}
void SearchController::Start(bool is_voice_query) {
Stop();
base::string16 query;
base::TrimWhitespace(search_box_->text(), base::TRIM_ALL, &query);
dispatching_query_ = true;
for (Providers::iterator it = providers_.begin();
it != providers_.end();
++it) {
(*it)->Start(is_voice_query, query);
}
dispatching_query_ = false;
is_voice_query_ = is_voice_query;
OnResultsChanged();
stop_timer_.Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(kStopTimeMS),
base::Bind(&SearchController::Stop,
base::Unretained(this)));
}
void SearchController::Stop() {
stop_timer_.Stop();
for (Providers::iterator it = providers_.begin();
it != providers_.end();
++it) {
(*it)->Stop();
}
}
void SearchController::OpenResult(SearchResult* result, int event_flags) {
// This can happen in certain circumstances due to races. See
// https://crbug.com/534772
if (!result)
return;
// Count AppList.Search here because it is composed of search + action.
base::RecordAction(base::UserMetricsAction("AppList_Search"));
UMA_HISTOGRAM_ENUMERATION(kSearchResultOpenDisplayTypeHistogram,
result->display_type(),
SearchResult::DISPLAY_TYPE_LAST);
if (result->display_type() != SearchResult::DISPLAY_RECOMMENDATION) {
UMA_HISTOGRAM_COUNTS_100(kSearchQueryLength, search_box_->text().size());
if (result->distance_from_origin() >= 0) {
UMA_HISTOGRAM_COUNTS_100(kSearchResultDistanceFromOrigin,
result->distance_from_origin());
}
}
result->Open(event_flags);
if (history_ && history_->IsReady()) {
history_->AddLaunchEvent(base::UTF16ToUTF8(search_box_->text()),
result->id());
}
}
void SearchController::InvokeResultAction(SearchResult* result,
int action_index,
int event_flags) {
// TODO(xiyuan): Hook up with user learning.
result->InvokeAction(action_index, event_flags);
}
size_t SearchController::AddGroup(size_t max_results,
double boost,
double multiplier) {
return mixer_->AddGroup(max_results, boost, multiplier);
}
size_t SearchController::AddOmniboxGroup(size_t max_results,
double boost,
double multiplier) {
return mixer_->AddOmniboxGroup(max_results, boost, multiplier);
}
void SearchController::AddProvider(size_t group_id,
scoped_ptr<SearchProvider> provider) {
provider->set_result_changed_callback(base::Bind(
&SearchController::OnResultsChanged,
base::Unretained(this)));
mixer_->AddProviderToGroup(group_id, provider.get());
providers_.push_back(provider.Pass());
}
void SearchController::OnResultsChanged() {
if (dispatching_query_)
return;
KnownResults known_results;
if (history_ && history_->IsReady()) {
history_->GetKnownResults(base::UTF16ToUTF8(search_box_->text()))
->swap(known_results);
}
mixer_->MixAndPublish(is_voice_query_, known_results);
}
} // namespace app_list
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