/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#pragma once

#include <sfx2/childwin.hxx>
#include <editeng/SpellPortions.hxx>
#include <svx/svxdllapi.h>

class AbstractSpellDialog;

namespace svx
{
/** The child window wrapper of the actual spelling dialog.  To use the
    spelling dialog in an application you have to do the usual things:
    <ol>
    <li>Call this class' RegisterChildWindow() method with the module
    as second argument that you want the dialog included in.</li>
    <li>In the SFX_IMPL_INTERFACE implementation of the view shell
    that wants to use the dialog call RegisterChildWindow()
    with the id returned by this class' GetChildWindowId()
    method.</li>
    <li>Include the item associated with this child window to the SDI
    description of the view shell.</li>
    </ol>
*/
class SVX_DLLPUBLIC SpellDialogChildWindow : public SfxChildWindow
{
    friend class SpellDialog;
    VclPtr<AbstractSpellDialog> m_xAbstractSpellDialog;

public:
    SpellDialogChildWindow(vcl::Window* pParent, sal_uInt16 nId, SfxBindings* pBindings);
    virtual ~SpellDialogChildWindow() override;

    virtual void Initialize() override;

protected:
    /** This abstract method has to be defined by a derived class.  It
        returns the next wrong sentence.
        @return
            returns an empty vector if no error could be found
    */
    virtual SpellPortions GetNextWrongSentence(bool bRecheck) = 0;

    /** This abstract method applies the changes made in the spelling dialog
     to the document.
     The dialog always updates its settings when it gets the focus. The document
     can rely on the fact that the methods ApplyChangedSentence() is called for the
     position that the last GetNextWrongSentence() returned.
     If 'bRecheck' is set to true then the same sentence should be rechecked once from
     the start. This should be used to find errors that the user has introduced by
     manual changes in the edit field, and in order to not miss the still following errors
     in that sentence.
    */
    virtual void ApplyChangedSentence(const SpellPortions& rChanged, bool bRecheck) = 0;
    /** This methods determines whether the application supports AutoCorrection
     */
    virtual bool HasAutoCorrection();
    /** This method adds a word pair to the AutoCorrection - if available
     */
    virtual void AddAutoCorrection(const OUString& rOld, const OUString& rNew,
                                   LanguageType eLanguage);
    /** Return the sfx bindings for this child window. They are
        retrieved from the dialog so they do not have to be stored in
        this class as well.  The bindings may be necessary to be used
        by the abstract methods.
    */
    /** This method determines if grammar checking is supported
     */
    virtual bool HasGrammarChecking();
    /** determines if grammar checking is switched on
     */
    virtual bool IsGrammarChecking();
    /** switches grammar checking on/off
     */
    virtual void SetGrammarChecking(bool bOn);

    SfxBindings& GetBindings() const;
    /** Set the spell dialog into the 'resume' state. This method should be called
        to notify the SpellDialog about changes in the document that invalidate the
        current state which results in disabling most of the dialog controls and presenting
        a "Resume" button that initiates a reinitialization.
     */
    void InvalidateSpellDialog();
    /** Notifies the ChildWindow about the get focus event. The ChildWindow should now check if
        the spelling dialog should be set to the 'Resume' state by calling InvalidateSpellDialog()
     */
    virtual void GetFocus(bool bForceResume) = 0;
    /** Notifies the ChildWindow about the lose focus event. The ChildWindow should use it to save
        the current selection/state.
     */
    virtual void LoseFocus() = 0;
};

} // end of namespace ::svx

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