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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.
#ifndef CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_PAGE_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_PAGE_HANDLER_H_
#include <stdint.h>
#include <memory>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "chrome/browser/ui/webui/omnibox/omnibox.mojom.h"
#include "components/omnibox/browser/autocomplete_controller_delegate.h"
#include "components/omnibox/browser/autocomplete_input.h"
#include "components/omnibox/browser/autocomplete_match.h"
#include "components/omnibox/browser/omnibox_controller_emitter.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
class AutocompleteController;
class Profile;
// Implementation of mojo::OmniboxPageHandler. StartOmniboxQuery() calls to a
// private AutocompleteController. It also listens for updates from the
// AutocompleteController to OnResultChanged() and passes those results to
// the OmniboxPage.
class OmniboxPageHandler : public AutocompleteControllerDelegate,
public mojom::OmniboxPageHandler,
public OmniboxControllerEmitter::Observer {
public:
// OmniboxPageHandler is deleted when the supplied pipe is destroyed.
OmniboxPageHandler(Profile* profile,
mojo::PendingReceiver<mojom::OmniboxPageHandler> receiver);
~OmniboxPageHandler() override;
// AutocompleteControllerDelegate overrides:
void OnResultChanged(bool default_match_changed) override;
// OmniboxControllerEmitter::Observer overrides:
void OnOmniboxQuery(AutocompleteController* controller,
const AutocompleteInput& input) override;
void OnOmniboxResultChanged(bool default_match_changed,
AutocompleteController* controller) override;
// mojom::OmniboxPageHandler overrides:
void SetClientPage(mojo::PendingRemote<mojom::OmniboxPage> page) override;
// current_url may be invalid, in which case, autocomplete input's url won't
// be set.
void StartOmniboxQuery(const std::string& input_string,
bool reset_autocomplete_controller,
int32_t cursor_position,
bool zero_suggest,
bool prevent_inline_autocomplete,
bool prefer_keyword,
const std::string& current_url,
int32_t page_classification) override;
private:
// Looks up whether the hostname is a typed host (i.e., has received
// typed visits). Return true if the lookup succeeded; if so, the
// value of |is_typed_host| is set appropriately.
bool LookupIsTypedHost(const base::string16& host, bool* is_typed_host) const;
// Re-initializes the AutocompleteController in preparation for the
// next query.
void ResetController();
// The omnibox AutocompleteController that collects/sorts/dup-
// eliminates the results as they come in.
std::unique_ptr<AutocompleteController> controller_;
// Time the user's input was sent to the omnibox to start searching.
// Needed because we also pass timing information in the object we
// hand back to the javascript.
base::Time time_omnibox_started_;
// The input used when starting the AutocompleteController.
AutocompleteInput input_;
// Handle back to the page by which we can pass results.
mojo::Remote<mojom::OmniboxPage> page_;
// The Profile* handed to us in our constructor.
Profile* profile_;
mojo::Receiver<mojom::OmniboxPageHandler> receiver_;
ScopedObserver<OmniboxControllerEmitter, OmniboxControllerEmitter::Observer>
observer_;
DISALLOW_COPY_AND_ASSIGN(OmniboxPageHandler);
};
#endif // CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_PAGE_HANDLER_H_
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