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// Copyright (c) 2010 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_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_
#define CHROME_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_
#include <string>
#include <vector>
#include "base/logging.h"
#include "chrome/renderer/translate/text_translator.h"
class RenderView;
// An implementation of the TextTranslator that sends translation requests
// to the browser.
// There is one instance of TextTranslatorImpl per RenderViewHost and the
// RenderViewHost owns that instance.
//
// TODO(jcampan): limit the number of translation requests in flight so not to
// swamp the browser's resource dispatcher host.
class TextTranslatorImpl : public TextTranslator {
public:
explicit TextTranslatorImpl(RenderView* render_view);
// Called by the renderer to notify a translation response has been received.
// |error_id| is different than 0 if an error occurred.
void OnTranslationResponse(int work_id,
int error_id,
const std::vector<string16>& text_chunks);
// TextTranslator implementation.
virtual int Translate(const std::vector<string16>& text,
std::string from_lang,
std::string to_lang,
bool secure,
TextTranslator::Delegate* delegate);
private:
// The render view through which translation requests/responses are
// sent/received.
RenderView* render_view_;
// The counter used to create work ids.
int work_id_counter_;
DISALLOW_COPY_AND_ASSIGN(TextTranslatorImpl);
};
#endif // CHROME_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_
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