/* -*- 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 <memory>
#include <stack>

#include "PropertyMap.hxx"
#include "TableData.hxx"

#include <dmapper/resourcemodel.hxx>

namespace writerfilter::dmapper
{

class DomainMapperTableHandler;

/**
   The table manager.

   This class gets forwarded events from the tokenizer. It gathers the
   table data and after ending the table generates events for the
   table structure. The events have to be handles by a TableDataHandler.

 */
class TableManager : public virtual SvRefBase
{
    class TableManagerState final
    {
        /**
         properties of the current cell
         */
        TablePropertyMapPtr mpCellProps;

        /**
         properties of the current row
         */
        TablePropertyMapPtr mpRowProps;

        /**
         table exception properties of the current row
         */
        TablePropertyMapPtr mpTableExceptionProps;

        /**
         properties of the current table
         */
        std::stack<TablePropertyMapPtr> mTableProps;

        /**
         true if at the end of a row
         */
        bool mbRowEnd;

        /**
         true when in a cell
         */
        bool mbInCell;

        /**
         true when at the end of a cell
         */
        bool mbCellEnd;

    public:
        /**
         Constructor
         */
        TableManagerState()
        : mbRowEnd(false), mbInCell(false), mbCellEnd(false)
        {
        }

        void startLevel()
        {
            TablePropertyMapPtr pProps;
            mTableProps.push(pProps);
        }

        void endLevel()
        {
            mTableProps.pop();
        }

        /**
         Reset to initial state at beginning of row.
         */
        void resetCellSpecifics()
        {
            mbRowEnd = false;
            mbInCell = false;
            mbCellEnd = false;
        }

        void resetCellProps()
        {
            // copy tblPrEx table exception properties, if they exist
            if (getTableExceptionProps().is())
            {
                mpCellProps = new TablePropertyMap;
                mpCellProps->InsertProps(getTableExceptionProps().get());
            }
            else
                mpCellProps.clear();
        }

        void setCellProps(TablePropertyMapPtr pProps)
        {
            mpCellProps = pProps;
        }

        const TablePropertyMapPtr& getCellProps() const
        {
            return mpCellProps;
        }

        void resetRowProps()
        {
            // reset also table exception and
            // its copy set by the previous resetCellProps()
            mpTableExceptionProps.clear();
            resetCellProps();
            mpRowProps.clear();
        }

        void setRowProps(TablePropertyMapPtr pProps)
        {
            mpRowProps = pProps;
        }

        const TablePropertyMapPtr& getRowProps() const
        {
            return mpRowProps;
        }

        void setTableExceptionProps(TablePropertyMapPtr pProps)
        {
            mpTableExceptionProps = pProps;
            // set table exception properties of the first cell
            resetCellProps();
        }

        const TablePropertyMapPtr& getTableExceptionProps() const
        {
            return mpTableExceptionProps;
        }

        void resetTableProps()
        {
            if (mTableProps.size() > 0)
                mTableProps.top().clear();
        }

        void setTableProps(TablePropertyMapPtr pProps)
        {
            if (mTableProps.size() > 0)
                mTableProps.top() = pProps;
        }

        TablePropertyMapPtr getTableProps()
        {
            TablePropertyMapPtr pResult;

            if (mTableProps.size() > 0)
                pResult = mTableProps.top();

            return pResult;
        }

        void setInCell(bool bInCell)
        {
            mbInCell = bInCell;
        }

        bool isInCell() const
        {
            return mbInCell;
        }

        void setCellEnd(bool bCellEnd)
        {
            mbCellEnd = bCellEnd;
        }

        bool isCellEnd() const
        {
            return mbCellEnd;
        }

        void setRowEnd(bool bRowEnd)
        {
            mbRowEnd = bRowEnd;
        }

        bool isRowEnd() const
        {
            return mbRowEnd;
        }
    };

    /**
     handle for the current position in document
     */
    css::uno::Reference<css::text::XTextRange> mCurHandle;

    TableManagerState mState;

protected:
    TablePropertyMapPtr const & getCellProps() const
    {
        return mState.getCellProps();
    }

public:
    TablePropertyMapPtr const & getRowProps() const
    {
        return mState.getRowProps();
    }

    TablePropertyMapPtr const & getTableExceptionProps() const
    {
        return mState.getTableExceptionProps();
    }

protected:
    void setInCell(bool bInCell)
    {
        mState.setInCell(bInCell);
    }

    bool isInCell() const
    {
        return mState.isInCell();
    }

    void setCellEnd(bool bCellEnd)
    {
        mState.setCellEnd(bCellEnd);
    }

    void setRowEnd(bool bRowEnd)
    {
        mState.setRowEnd(bRowEnd);
    }

    bool isRowEnd() const
    {
        return mState.isRowEnd();
    }

    TablePropertyMapPtr getTableProps()
    {
        return mState.getTableProps();
    }

    const css::uno::Reference<css::text::XTextRange>& getHandle() const
    {
        return mCurHandle;
    }

    void setHandle(const css::uno::Reference<css::text::XTextRange>& rHandle)
    {
        mCurHandle = rHandle;
    }

private:
    typedef tools::SvRef< css::uno::Reference<css::text::XTextRange> > T_p;

    /**
       depth of the current cell
    */
    sal_uInt32 mnTableDepthNew;

    /**
        depth of the previous cell
    */
    sal_uInt32 mnTableDepth;

    /**
       stack of table data

       for each level of nested tables there is one frame in the stack
     */
    std::stack<TableData::Pointer_t> mTableDataStack;
    RowData::Pointer_t mpUnfinishedRow;
    bool mbKeepUnfinishedRow;
    /// If this is a nested table, does it start at cell start?
    bool m_bTableStartsAtCellStart;

    bool m_bCellLastParaAfterAutospacing;

    /**
       handler for resolveCurrentTable
     */
    tools::SvRef<DomainMapperTableHandler> mpTableDataHandler;

    /**
       Set flag which indicates the current handle is in a cell.
     */
    void inCell();

    /**
       Set flag which indicate the current handle is at the end of a cell.
    */
    void endCell();

    /**
       Set the table depth of the current cell.

       @param nDepth     the cell depth
     */
    void cellDepth(sal_uInt32 nDepth);

    /**
       Set flag indication the current handle is at the end of a row.
    */
    void endRow();

    /**
       Resolve the current table to the TableDataHandler.
     */
    void resolveCurrentTable();

    /**
     Open a cell at current level.
     */

    void openCell(const css::uno::Reference<css::text::XTextRange>& rHandle, const TablePropertyMapPtr& pProps);

    /**
     Close a cell at current level.
     */
    void closeCell(const css::uno::Reference<css::text::XTextRange>& rHandle);

    /**
     Ensure a cell is open at the current level.
    */
    void ensureOpenCell(const TablePropertyMapPtr& pProps);

protected:
    /**
       Return the current table difference, i.e. 1 if we are in the first cell of a new table, etc.
     */
    sal_Int32 getTableDepthDifference() const { return mnTableDepthNew - mnTableDepth; }

    sal_uInt32 getTableDepth() const { return mnTableDepthNew; }

    /**
       Action to be carried out at the end of the last paragraph of a
       cell.
     */
    virtual void endOfCellAction();

    /**
       Action to be carried out at the end of the "table row"
       paragraph.
     */
    virtual void endOfRowAction();
    /** let the derived class clear their table related data
     */
    virtual void clearData();

    /** Should we keep the unfinished row in endLevel to initialize the table
        data in the following startLevel.
      */
    void setKeepUnfinishedRow(bool bKeep)
    {
        mbKeepUnfinishedRow = bKeep;
    }


public:
    TableManager();
    ~TableManager();

    /**
       Set handler for resolveCurrentTable.

       @param pTableDataHandler     the handler
     */
    void setHandler(const tools::SvRef<DomainMapperTableHandler>& pTableDataHandler);

    /**
       Set the current handle.

       @param rHandle     the handle
     */
    void handle(const css::uno::Reference<css::text::XTextRange>& rHandle);

    /**
       Start a new table level.

       A new context is pushed onto the table data stack,
     */
    virtual void startLevel();

    /**
       End a table level.

       The current table is resolved and the context is popped from
       the stack.
     */
    virtual void endLevel();

    /**
     * Signal that the next paragraph definitely won't be part of any table.
     */
    void endTable()
    {
        setRowEnd(false);
    }

    /**
       Tells whether a table has been started or not
      */
    bool isInTable();

    /**
       Handle the start of a paragraph group.
     */
    void startParagraphGroup();

    /**
       Handle the end of a paragraph group.
    */
    void endParagraphGroup();

    /**
       Handle an SPRM at current handle.

       @param rSprm   the SPRM
     */
    virtual bool sprm(Sprm & rSprm);

    /**
       Handle occurrence of character 0x7.
     */
    void handle0x7();

    /**
       Handle 8 bit text at current handle.

       @param data    array of characters
       @param len     number of characters to handle
     */
    void text(const sal_uInt8 * data, size_t len);

    /**
       Handle 16 bit text at current handle.

       @param data    array of characters
       @param len     number of characters to handle
     */
    void utext(const sal_uInt8 * data, size_t len);

    /**
       Handle properties of the current cell.

       @param pProps   the properties
     */
    virtual void cellProps(const TablePropertyMapPtr& pProps);

    /**
       Handle properties of the current row.

       @param pProps   the properties
     */
    virtual void insertRowProps(const TablePropertyMapPtr& pProps);

    /**
       Handle table exception properties of the current row.

       @param pProps   the properties
     */
    virtual void tableExceptionProps(const TablePropertyMapPtr& pProps);

    /**
       Handle properties of the current table.

       @param pProps   the properties
     */
    virtual void insertTableProps(const TablePropertyMapPtr& pProps);

    /**
       Return if table manager has detected paragraph to ignore.

       If this function returns true the current paragraph contains
       only control information, e.g. end of row.
     */
    bool isIgnore() const;

    sal_uInt32 getGridBefore(sal_uInt32 nRow);
    sal_uInt32 getCurrentGridBefore();
    void setCurrentGridBefore( sal_uInt32 nSkipGrids );
    sal_uInt32 getGridAfter(sal_uInt32 nRow);
    void setCurrentGridAfter( sal_uInt32 nSkipGrids );
    std::vector<sal_uInt32> getCurrentGridSpans();
    void setCurrentGridSpan( sal_uInt32 nGridSpan, bool bFirstCell = false );
    /// Given a zero-based row/cell, return the zero-based grid it belongs to, or SAL_MAX_UINT16 for invalid.
    sal_uInt32 findColumn( const sal_uInt32 nRow, const sal_uInt32 nCell );
    /// Given a zero-based row/col, return the zero-based cell describing that grid, or SAL_MAX_UINT16 for invalid.
    sal_uInt32 findColumnCell( const sal_uInt32 nRow, const sal_uInt32 nCol );

    void setTableStartsAtCellStart(bool bTableStartsAtCellStart);
    void setCellLastParaAfterAutospacing(bool bIsAfterAutospacing);
    bool isCellLastParaAfterAutospacing() const {return m_bCellLastParaAfterAutospacing;}
};

}



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