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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"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSpellCheckClient.h"
class RenderView;
class SpellCheck;
namespace WebKit {
class WebString;
class WebTextCheckingCompletion;
struct WebTextCheckingResult;
}
// This class deals with invoking browser-side spellcheck mechanism
// which is done asynchronously.
class SpellCheckProvider : public RenderViewObserver,
public WebKit::WebSpellCheckClient {
public:
typedef IDMap<WebKit::WebTextCheckingCompletion> WebTextCheckCompletions;
SpellCheckProvider(RenderView* render_view, SpellCheck* spellcheck);
virtual ~SpellCheckProvider();
// Requests 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();
}
int document_tag() const { return document_tag_; }
// RenderViewObserver implementation.
virtual bool OnMessageReceived(const IPC::Message& message);
virtual void FocusedNodeChanged(const WebKit::WebNode& node);
void SetSpellCheck(SpellCheck* spellcheck);
private:
// WebKit::WebSpellCheckClient implementation.
virtual void spellCheck(
const WebKit::WebString& text,
int& offset,
int& length,
WebKit::WebVector<WebKit::WebString>* optional_suggestions);
virtual void requestCheckingOfText(
const WebKit::WebString& text,
WebKit::WebTextCheckingCompletion* completion);
virtual WebKit::WebString autoCorrectWord(
const WebKit::WebString& misspelled_word);
virtual void showSpellingUI(bool show);
virtual bool isShowingSpellingUI();
virtual void updateSpellingUIWithMisspelledWord(
const WebKit::WebString& word);
void OnAdvanceToNextMisspelling();
void OnRespondTextCheck(
int identifier,
int tag,
const std::vector<WebKit::WebTextCheckingResult>& results);
void OnToggleSpellCheck();
void OnToggleSpellPanel(bool is_currently_visible);
// Initializes the document_tag_ member if necessary.
void EnsureDocumentTag();
// Holds ongoing spellchecking operations, assigns IDs for the IPC routing.
WebTextCheckCompletions text_check_completions_;
#if defined(OS_MACOSX)
// True if the current RenderView has been assigned a document tag.
bool has_document_tag_;
#endif
int document_tag_;
// True if the browser is showing the spelling panel for us.
bool spelling_panel_visible_;
// Spellcheck implementation for use. Weak reference.
SpellCheck* spellcheck_;
DISALLOW_COPY_AND_ASSIGN(SpellCheckProvider);
};
#endif // CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
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