/* -*- 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 "AccessibleContextBase.hxx"

#include "AccessibleDocument.hxx"

#include <com/sun/star/accessibility/XAccessibleSelection.hpp>

#include <address.hxx>

#include <vcl/vclptr.hxx>

#include <vcl/weld/customweld.hxx>

#include <memory>

namespace accessibility

{

    class AccessibleTextHelper;

}

class EditView;

class ScTextWnd;

namespace vcl { class Window; }

/** @descr

        This base class provides an implementation of the

        <code>AccessibleCell</code> service.

*/

class ScAccessibleEditObject

    : public cppu::ImplInheritanceHelper<ScAccessibleContextBase,

                                         css::accessibility::XAccessibleSelection>

{

public:

    enum EditObjectType

    {

        CellInEditMode,

        EditLine,

        EditControl

    };

    ScAccessibleEditObject(

        const rtl::Reference<ScAccessibleDocument>& rpParent,

        EditView* pEditView, vcl::Window* pWin, const OUString& rName,

        const OUString& rDescription, EditObjectType eObjectType);

    void InitAcc(const rtl::Reference<ScAccessibleDocument>& rpParent, EditView* pEditView,

                 const OUString& rName, const OUString& rDescription);

protected:

    virtual ~ScAccessibleEditObject() override;

    ScAccessibleEditObject(EditObjectType eObjectType);

    using ScAccessibleContextBase::IsDefunc;

public:

    using ScAccessibleContextBase::disposing;

    virtual void SAL_CALL disposing() override;

    void LostFocus();

    void GotFocus();

    ///=====  XAccessibleComponent  ============================================

    virtual css::uno::Reference< css::accessibility::XAccessible >

        SAL_CALL getAccessibleAtPoint(

        const css::awt::Point& rPoint ) override;

    virtual OutputDevice* GetOutputDeviceForView();

protected:

    /// Return the object's current bounding box relative to the desktop.

    virtual AbsoluteScreenPixelRectangle GetBoundingBoxOnScreen() override;

    /// Return the object's current bounding box relative to the parent object.

    virtual tools::Rectangle GetBoundingBox() override;

public:

    ///=====  XAccessibleContext  ==============================================

    /// Return the number of currently visible children.

    /// override to calculate this on demand

    virtual sal_Int64 SAL_CALL

        getAccessibleChildCount() override;

    /// Return the specified child or NULL if index is invalid.

    /// override to calculate this on demand

    virtual css::uno::Reference< css::accessibility::XAccessible> SAL_CALL

        getAccessibleChild(sal_Int64 nIndex) override;

    /// Return the set of current states.

    virtual sal_Int64 SAL_CALL getAccessibleStateSet() override;

    //=====  XAccessibleSelection  ============================================

        virtual void SAL_CALL selectAccessibleChild(

            sal_Int64 nChildIndex ) override;

        virtual sal_Bool SAL_CALL isAccessibleChildSelected(

            sal_Int64 nChildIndex ) override;

        virtual void SAL_CALL clearAccessibleSelection(  ) override;

        virtual void SAL_CALL selectAllAccessibleChildren(  ) override;

        virtual sal_Int64 SAL_CALL getSelectedAccessibleChildCount(  ) override;

        virtual css::uno::Reference< css::accessibility::XAccessible > SAL_CALL getSelectedAccessibleChild(

            sal_Int64 nSelectedChildIndex ) override;

        virtual void SAL_CALL deselectAccessibleChild(

            sal_Int64 nSelectedChildIndex ) override;

    virtual css::uno::Reference< css::accessibility::XAccessibleRelationSet > SAL_CALL getAccessibleRelationSet(  ) override;

protected:

    /// Return this object's description.

    virtual OUString

        createAccessibleDescription() override;

    /// Return the object's current name.

    virtual OUString

        createAccessibleName() override;

public:

    ///=====  XAccessibleEventBroadcaster  =====================================

    /** Add listener that is informed of future changes of name,

          description and so on events.

    */

    virtual void SAL_CALL

        addAccessibleEventListener(

            const css::uno::Reference<css::accessibility::XAccessibleEventListener>& xListener) override;

    //  Remove an existing event listener.

    virtual void SAL_CALL

        removeAccessibleEventListener(

            const css::uno::Reference<css::accessibility::XAccessibleEventListener>& xListener) override;

private:

    std::unique_ptr<accessibility::AccessibleTextHelper> mpTextHelper;

    EditView*      mpEditView;

    VclPtr<vcl::Window> mpWindow;

protected:

    ScTextWnd* mpTextWnd;

private:

    EditObjectType meObjectType;

    bool           mbHasFocus;

    bool IsDefunc(sal_Int64 nParentStates);

    void CreateTextHelper();

    ScDocument *m_pScDoc;

    ScAddress m_curCellAddress;

    ///=====  XAccessibleComponent  ============================================

    virtual sal_Int32 SAL_CALL getForeground(  ) override;

    virtual sal_Int32 SAL_CALL getBackground(  ) override;

    sal_Int32 GetFgBgColor(  const OUString &strPropColor) ;

};

class ScAccessibleEditControlObject : public ScAccessibleEditObject

{

private:

    weld::CustomWidgetController* m_pController;

protected:

    /// Return the object's current bounding box relative to the desktop.

    virtual AbsoluteScreenPixelRectangle GetBoundingBoxOnScreen() override;

    /// Return the object's current bounding box relative to the parent object.

    virtual tools::Rectangle GetBoundingBox() override;

public:

    ScAccessibleEditControlObject(weld::CustomWidgetController* pController, EditObjectType eObjectType)

        : ScAccessibleEditObject(eObjectType)

        , m_pController(pController)

    {

    }

    virtual css::uno::Reference< css::accessibility::XAccessibleRelationSet > SAL_CALL getAccessibleRelationSet(  ) override;

    // for mapping positions/sizes within the TextView to a11y

    virtual OutputDevice* GetOutputDeviceForView() override;

    using ScAccessibleContextBase::disposing;

    virtual void SAL_CALL disposing() override;

};

class ScAccessibleEditLineObject final : public ScAccessibleEditControlObject

{

public:

    ScAccessibleEditLineObject(ScTextWnd* pTextWnd);

};

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