/* -*- 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 .

 */

#include <vcl/svapp.hxx>

#include <vcl/weld/weldutils.hxx>

#include "structpg.hxx"

#include <formula/formula.hxx>

#include <formula/token.hxx>

#include <bitmaps.hlst>

namespace formula

{

void StructPage::SetActiveFlag(bool bFlag)

{

    bActiveFlag = bFlag;

}

StructPage::StructPage(weld::Container* pParent)

    : m_xBuilder(Application::CreateBuilder(pParent, u"formula/ui/structpage.ui"_ustr))

    , m_xContainer(m_xBuilder->weld_container(u"StructPage"_ustr))

    , m_xTlbStruct(m_xBuilder->weld_tree_view(u"struct"_ustr))

    , maImgEnd(BMP_STR_END)

    , maImgError(BMP_STR_ERROR)

    , pSelectedToken(nullptr)

    , bActiveFlag(false)

{

    m_xTlbStruct->set_size_request(m_xTlbStruct->get_approximate_digit_width() * 20,

                                   m_xTlbStruct->get_height_rows(17));

    m_xTlbStruct->connect_selection_changed(LINK(this, StructPage, SelectHdl));

}

StructPage::~StructPage()

{

}

void StructPage::ClearStruct()

{

    SetActiveFlag(false);

    m_xTlbStruct->clear();

}

bool StructPage::InsertEntry(const OUString& rText, const weld::TreeIter* pParent,

                             StructType eStructType, int nPos, const FormulaToken* pIFormulaToken,

                             weld::TreeIter& rRet)

{

    SetActiveFlag(false);

    OUString sId(weld::toId(pIFormulaToken));

    bool bEntry = false;

    switch (eStructType)

    {

        case StructType::Folder:

            m_xTlbStruct->insert(pParent, nPos, &rText, &sId, nullptr, nullptr,

                                 false, &rRet);

            m_xTlbStruct->set_image(rRet, BMP_STR_OPEN, 0);

            bEntry = true;

            break;

        case StructType::End:

            m_xTlbStruct->insert(pParent, nPos, &rText, &sId, nullptr, nullptr,

                                 false, &rRet);

            m_xTlbStruct->set_image(rRet, maImgEnd, 0);

            bEntry = true;

            break;

        case StructType::Error:

            m_xTlbStruct->insert(pParent, nPos, &rText, &sId, nullptr, nullptr,

                                 false, &rRet);

            m_xTlbStruct->set_image(rRet, maImgError, 0);

            bEntry = true;

            break;

    }

    if (bEntry && pParent)

        m_xTlbStruct->expand_row(*pParent);

    return bEntry;

}

OUString StructPage::GetEntryText(const weld::TreeIter* pEntry) const

{

    OUString aString;

    if (pEntry)

        aString = m_xTlbStruct->get_text(*pEntry);

    return aString;

}

const FormulaToken* StructPage::GetFunctionEntry(const weld::TreeIter* pEntry)

{

    if (!pEntry)

        return nullptr;

    const FormulaToken * pToken = weld::fromId<const FormulaToken*>(m_xTlbStruct->get_id(*pEntry));

    if (pToken)

    {

        if ( !(pToken->IsFunction() || pToken->GetParamCount() > 1 ) )

        {

            std::unique_ptr<weld::TreeIter> xParent(m_xTlbStruct->make_iterator(pEntry));

            if (!m_xTlbStruct->iter_parent(*xParent))

                return nullptr;

            return GetFunctionEntry(xParent.get());

        }

        else

        {

            return pToken;

        }

    }

    return nullptr;

}

IMPL_LINK(StructPage, SelectHdl, weld::ItemView&, rTlb, void)

{

    if (!GetActiveFlag())

        return;

    if (&rTlb == m_xTlbStruct.get())

    {

        if (std::unique_ptr<weld::TreeIter> xCurEntry = m_xTlbStruct->get_cursor())

        {

            pSelectedToken = weld::fromId<const FormulaToken*>(m_xTlbStruct->get_id(*xCurEntry));

            if (pSelectedToken)

            {

                if ( !(pSelectedToken->IsFunction() || pSelectedToken->GetParamCount() > 1) )

                {

                    pSelectedToken = GetFunctionEntry(xCurEntry.get());

                }

            }

        }

    }

    aSelLink.Call(*this);

}

} // formula

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