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// Copyright 2019 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_SPELLCHECKER_SPELLING_REQUEST_H_
#define CHROME_BROWSER_SPELLCHECKER_SPELLING_REQUEST_H_
#include "base/containers/unique_ptr_adapters.h"
#include "components/spellcheck/browser/platform_spell_checker.h"
#include "components/spellcheck/browser/spell_check_host_impl.h"
#include "components/spellcheck/browser/spelling_service_client.h"
class SpellingRequest;
struct SpellCheckResult;
// SpellingRequest is owned by SpellCheckHostChromeImpl.
class SpellingRequest {
public:
using RequestTextCheckCallback =
spellcheck::mojom::SpellCheckHost::RequestTextCheckCallback;
using DestructionCallback = base::OnceCallback<void(SpellingRequest*)>;
SpellingRequest(PlatformSpellChecker* platform_spell_checker,
SpellingServiceClient* client,
const base::string16& text,
int render_process_id,
int document_tag,
RequestTextCheckCallback callback,
DestructionCallback destruction_callback);
~SpellingRequest();
// Exposed to tests only.
static void CombineResults(
std::vector<SpellCheckResult>* remote_results,
const std::vector<SpellCheckResult>& local_results);
private:
// Request server-side checking for |text_|.
void RequestRemoteCheck(SpellingServiceClient* client, int render_process_id);
// Request a check for |text_| from local spell checker.
void RequestLocalCheck(PlatformSpellChecker* platform_spell_checker,
int document_tag);
// Check if all pending requests are done, send reply to render process if so.
void OnCheckCompleted();
// Called when server-side checking is complete. Must be called on UI thread.
void OnRemoteCheckCompleted(bool success,
const base::string16& text,
const std::vector<SpellCheckResult>& results);
// Called when local checking is complete. Must be called on UI thread.
void OnLocalCheckCompleted(const std::vector<SpellCheckResult>& results);
// Forwards the results back to UI thread when local checking completes.
static void OnLocalCheckCompletedOnAnyThread(
base::WeakPtr<SpellingRequest> request,
const std::vector<SpellCheckResult>& results);
std::vector<SpellCheckResult> local_results_;
std::vector<SpellCheckResult> remote_results_;
// Barrier closure for completion of both remote and local check.
base::RepeatingClosure completion_barrier_;
bool remote_success_;
// The string to be spell-checked.
base::string16 text_;
// Callback to send the results to renderer. Note that both RequestTextCheck
// and RequestPartialTextCheck have the same callback signatures, so both
// callback types can be assigned to this member (the generated
// base::OnceCallback types are the same).
RequestTextCheckCallback callback_;
// Callback to delete |this|. Called on |this| after everything is done.
DestructionCallback destruction_callback_;
base::WeakPtrFactory<SpellingRequest> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(SpellingRequest);
};
#endif // CHROME_BROWSER_SPELLCHECKER_SPELLING_REQUEST_H_
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