/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

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 * 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 <vector>

#include <svx/svxdllapi.h>

#include <rtl/ustring.hxx>

#include <svx/svdhdl.hxx>

// Forward declarations

class SdrObjGroup;

namespace svx { namespace diagram {

// Helper class to visualize an imminently recognizable

// additional visualization for DynamicDiagrams that can also

// be used to show/hide the DiagramDialog by the user

// Note: is also used as additional drag/move handle

class SVXCORE_DLLPUBLIC DiagramFrameHdl final : public SdrHdl

{

    // object dimensions

    basegfx::B2DHomMatrix maTransformation;

    // create marker for this kind

    virtual void CreateB2dIAObject() override;

public:

    DiagramFrameHdl(const basegfx::B2DHomMatrix& rTransformation);

    static void clicked(const Point& rPnt);

};

class DiagramDataState;

// Helper class to allow administer advanced Diagram related

// data and functionality

class SVXCORE_DLLPUBLIC IDiagramHelper

{

private:

    // These values define behaviour to where take data from at re-creation time.

    // Different definitions will have different consequences for re-creation

    // of Diagram visualization (if needed/triggered).

    // The style attributes per shape e.g. can be re-stored frm either an

    // existing Theme, or the preserved key/value list of properties per XShape.

    // With the current default settings the re-creation uses the preserved

    // key/value pairs, but re-creation from Theme may also be desirable. It

    // is also good to preserve both data packages at initial import to allow

    // alternatively one of these two methods for re-construction

    // If true, the oox::Theme data from ::DiagramData get/set/ThemeDocument()

    // aka mxThemeDocument - if it exists - will be used to create the style

    // attributes for the to-be-created XShapes (theoretically allows re-creation

    // with other Theme)

    bool mbUseDiagramThemeData; // false

    // If true, the UNO API form of attributes per Point as Key/value list

    // that was secured after initial XShape creation is used to create the

    // style attributes for the to-be-created XShapes

    bool mbUseDiagramModelData; // true

    // If true and mxThemeDocument exists it will be re-imported to

    // a newly created oox::drawingml::Theme object

    bool mbForceThemePtrRecreation; // false

    // if true, content was self-created using addTo/addShape

    // and the layouting stuff

    bool mbSelfCreated;

protected:

    void anchorToSdrObjGroup(SdrObjGroup& rTarget);

public:

    IDiagramHelper(bool bSelfCreated);

    virtual ~IDiagramHelper();

    // re-create XShapes

    virtual void reLayout(SdrObjGroup& rTarget) = 0;

    // get text representation of data tree

    virtual OUString getString() const = 0;

    // get children of provided data node

    // use empty string for top-level nodes

    // returns vector of (id, text)

    virtual std::vector<std::pair<OUString, OUString>>

    getChildren(const OUString& rParentId) const = 0;

    // add/remove new top-level node to data model, returns its id

    virtual OUString addNode(const OUString& rText) = 0;

    virtual bool removeNode(const OUString& rNodeId) = 0;

    // Undo/Redo helpers for extracting/restoring Diagram-defining data

    virtual std::shared_ptr<svx::diagram::DiagramDataState> extractDiagramDataState() const = 0;

    virtual void applyDiagramDataState(const std::shared_ptr<svx::diagram::DiagramDataState>& rState) = 0;

    bool UseDiagramThemeData() const { return mbUseDiagramThemeData; }

    bool UseDiagramModelData() const { return mbUseDiagramModelData; }

    bool ForceThemePtrRecreation() const { return mbForceThemePtrRecreation; };

    // get/set SelfCreated flag

    bool isSelfCreated() const { return mbSelfCreated; }

    void setSelfCreated() { mbSelfCreated = true; }

    static void AddAdditionalVisualization(const SdrObjGroup& rTarget, SdrHdlList& rHdlList);

};

}} // end of namespace

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