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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OMNIBOX_BROWSER_HISTORY_CLUSTER_PROVIDER_H_
#define COMPONENTS_OMNIBOX_BROWSER_HISTORY_CLUSTER_PROVIDER_H_
#include "components/omnibox/browser/autocomplete_input.h"
#include "components/omnibox/browser/autocomplete_provider.h"
#include "components/omnibox/browser/autocomplete_provider_listener.h"
class AutocompleteProvider;
class AutocompleteProviderClient;
// `HistoryClusterProvider` adds suggestions to the history journey page if
// any `SearchProvider` suggestions matched a cluster keyword. Inherits
// `AutocompleteProviderListener` in order to listen to `SearchProvider`
// updates. Uses `SearchProvider` suggestions, as a proxy for what the user may
// be typing if they're typing a query. Doesn't use other search providers'
// (i.e. `VoiceSearchProvider` and `ZeroSuggestProvider`) suggestions for
// simplicity.
class HistoryClusterProvider : public AutocompleteProvider,
public AutocompleteProviderListener {
public:
HistoryClusterProvider(AutocompleteProviderClient* client,
AutocompleteProviderListener* listener,
AutocompleteProvider* search_provider,
AutocompleteProvider* history_url_provider,
AutocompleteProvider* history_quick_provider);
// Updates `match->action` to have the `OmniboxAction`, and updates
// `provider_suggestion_groups_map` to contain the right groups.
// `matching_text` is necessary to pass the query down to the `OmniboxAction`
// so it can pre-populate the query field in the Journeys searchbox.
static void CompleteHistoryClustersMatch(
const std::string& matching_text,
history::ClusterKeywordData matched_keyword_data,
AutocompleteMatch* match);
// AutocompleteProvider:
void Start(const AutocompleteInput& input, bool minimal_changes) override;
// AutocompleteProviderListener:
// `HistoryClusterProvider` listens to `SearchProvider` updates.
void OnProviderUpdate(bool updated_matches,
const AutocompleteProvider* provider) override;
private:
~HistoryClusterProvider() override = default;
// Check if `search_provider_`, `history_url_provider_`, and
// `history_quick_provider_` are all done.
bool AllProvidersDone();
// Iterates `search_provider_->matches()` and check if any can be used to
// create a history cluster match. Returns whether any matches were created.
bool CreateMatches();
// Creates a `AutocompleteMatch`.
AutocompleteMatch CreateMatch(
const AutocompleteMatch& search_match,
history::ClusterKeywordData matched_keyword_data);
// The `AutocompleteInput` passed to `Start()`.
AutocompleteInput input_;
// These are never null. The providers are used to detect nav intent for which
// no matches will be provided. Other providers can also provide search and
// navigations suggestion, but these are the dominant sources, both in volume
// and high scores (which is what nav intent considers).
const raw_ptr<AutocompleteProviderClient> client_;
const raw_ptr<AutocompleteProvider> search_provider_;
const raw_ptr<AutocompleteProvider> history_url_provider_;
const raw_ptr<AutocompleteProvider> history_quick_provider_;
};
#endif // COMPONENTS_OMNIBOX_BROWSER_HISTORY_CLUSTER_PROVIDER_H_
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