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// Copyright (c) 2011 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_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
#define CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
#pragma once
#include <vector>
#include "base/id_map.h"
#include "content/renderer/render_view_observer.h"
class RenderView;
class SpellCheck;
namespace WebKit {
class WebString;
class WebTextCheckingResult;
class WebTextCheckingCompletion;
}
// This class deals with invoking browser-side spellcheck mechanism
// which is done asynchronously.
class SpellCheckProvider : public RenderViewObserver {
public:
typedef IDMap<WebKit::WebTextCheckingCompletion> WebTextCheckCompletions;
SpellCheckProvider(RenderView* render_view, SpellCheck* spellcheck);
virtual ~SpellCheckProvider();
// Reqeusts async spell and grammar checker to the platform text
// checker, which is available on the browser process.
void RequestTextChecking(
const WebKit::WebString& text,
int document_tag,
WebKit::WebTextCheckingCompletion* completion);
// Check the availability of the platform spellchecker.
// Makes this virtual for overriding on the unittest.
virtual bool is_using_platform_spelling_engine() const;
// The number of ongoing IPC requests.
size_t pending_text_request_size() const {
return text_check_completions_.size();
}
// RenderViewObserver implementation.
virtual bool OnMessageReceived(const IPC::Message& message);
private:
// A message handler that receives async results for RequestTextChecking().
void OnSpellCheckerRespondTextCheck(
int identifier,
int tag,
const std::vector<WebKit::WebTextCheckingResult>& results);
// Holds ongoing spellchecking operations, assigns IDs for the IPC routing.
WebTextCheckCompletions text_check_completions_;
// Spellcheck implementation for use. Weak reference.
SpellCheck* spellcheck_;
DISALLOW_COPY_AND_ASSIGN(SpellCheckProvider);
};
#endif // CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
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