/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef SpellCheckerClientImpl_h
#define SpellCheckerClientImpl_h

#include "core/page/SpellCheckerClient.h"
#include "platform/heap/Handle.h"
#include "platform/text/TextCheckerClient.h"

namespace blink {

class LocalFrame;
class HTMLInputElement;
class WebViewImpl;

class SpellCheckerClientImpl FINAL : public SpellCheckerClient, public TextCheckerClient {
public:
    explicit SpellCheckerClientImpl(WebViewImpl*);

    virtual ~SpellCheckerClientImpl();

    virtual bool isContinuousSpellCheckingEnabled() OVERRIDE;
    virtual void toggleContinuousSpellChecking() OVERRIDE;
    virtual bool isGrammarCheckingEnabled() OVERRIDE;
    virtual bool shouldEraseMarkersAfterChangeSelection(TextCheckingType) const OVERRIDE;
    virtual void checkSpellingOfString(const String&, int* misspellingLocation, int* misspellingLength) OVERRIDE;
    virtual void checkGrammarOfString(const String&, WTF::Vector<GrammarDetail>&,
        int* badGrammarLocation, int* badGrammarLength) OVERRIDE;
    virtual WTF::String getAutoCorrectSuggestionForMisspelledWord(const WTF::String&) OVERRIDE;
    virtual void updateSpellingUIWithMisspelledWord(const WTF::String&) OVERRIDE;
    virtual void showSpellingUI(bool show) OVERRIDE;
    virtual bool spellingUIIsShowing() OVERRIDE;
    virtual void requestCheckingOfString(PassRefPtrWillBeRawPtr<TextCheckingRequest>) OVERRIDE;

    virtual TextCheckerClient& textChecker() OVERRIDE { return *this; }

private:
    // Returns whether or not the focused control needs spell-checking.
    // Currently, this function just retrieves the focused node and determines
    // whether or not it is a <textarea> element or an element whose
    // contenteditable attribute is true.
    // FIXME: Bug 740540: This code just implements the default behavior
    // proposed in this issue. We should also retrieve "spellcheck" attributes
    // for text fields and create a flag to over-write the default behavior.
    bool shouldSpellcheckByDefault();

    WebViewImpl* m_webView;

    // This flag is set to false if spell check for this editor is manually
    // turned off. The default setting is SpellCheckAutomatic.
    enum {
        SpellCheckAutomatic,
        SpellCheckForcedOn,
        SpellCheckForcedOff
    } m_spellCheckThisFieldStatus;
};

} // namespace blink

#endif