chromium/components/omnibox/browser/search_provider.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This file contains the Search autocomplete provider.  This provider is
// responsible for all autocomplete entries that start with "Search <engine>
// for ...", including searching for the current input string, search
// history, and search suggestions.  An instance of it gets created and
// managed by the autocomplete controller.

#ifndef COMPONENTS_OMNIBOX_BROWSER_SEARCH_PROVIDER_H_
#define COMPONENTS_OMNIBOX_BROWSER_SEARCH_PROVIDER_H_

#include <memory>
#include <string>
#include <vector>

#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/omnibox/browser/answers_cache.h"
#include "components/omnibox/browser/base_search_provider.h"
#include "components/search_engines/template_url.h"
#include "components/search_engines/template_url_service.h"
#include "components/search_engines/template_url_service_observer.h"
#include "third_party/metrics_proto/omnibox_input_type.pb.h"

class AutocompleteProviderClient;
class AutocompleteProviderListener;
class AutocompleteResult;
class SearchProviderTest;

namespace history {
struct KeywordSearchTermVisit;
}

namespace network {
class SimpleURLLoader;
}

// Autocomplete provider for searches and suggestions from a search engine.
//
// After construction, the autocomplete controller repeatedly calls Start()
// with some user input, each time expecting to receive a small set of the best
// matches (either synchronously or asynchronously).
//
// Initially the provider creates a match that searches for the current input
// text.  It also starts a task to query the Suggest servers.  When that data
// comes back, the provider creates and returns matches for the best
// suggestions.
class SearchProvider : public BaseSearchProvider,
                       public TemplateURLServiceObserver { … };

#endif  // COMPONENTS_OMNIBOX_BROWSER_SEARCH_PROVIDER_H_