/*
 * (c) Copyright Ascensio System SIA 2010-2024
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
 * street, Riga, Latvia, EU, LV-1050.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */
"use strict";
(function (window, undefined){


    /**
     * CDrawingDocContent
     * @constructor
     * @extends {CDocumentContent}
     */
    function CDrawingDocContent(Parent, DrawingDocument, X, Y, XLimit, YLimit) {
		CDocumentContent.call(this, Parent, DrawingDocument, X, Y, XLimit, YLimit, false, false, true);
        this.FullRecalc = new CDocumentRecalculateState();
        this.AllFields = [];
    }

	CDrawingDocContent.prototype = Object.create(CDocumentContent.prototype);
	CDrawingDocContent.prototype.constructor = CDrawingDocContent;

    CDrawingDocContent.prototype.CalculateAllFields = function () {
        var aParagraphs = this.Content;
        this.AllFields.length = 0;
        for(var i = 0; i < aParagraphs.length; ++i){
            var aContent = aParagraphs[i].Content;
            for(var j = 0; j < aContent.length; ++j){
                if(aContent[j] instanceof AscCommonWord.CPresentationField){
                    this.AllFields.push(aContent[j]);
                }
            }
        }
    };

    CDrawingDocContent.prototype.CanAddComment = function() {
        return false;
    };

    CDrawingDocContent.prototype.getFontSizeForConstr = function () {
        return this.Content.reduce(function (pAcc, paragraph) {
            var maxFontSizeInParagraph = paragraph.Content.reduce(function (acc, paraRun) {
                return paraRun.Pr && paraRun.Pr.FontSize && paraRun.Pr.FontSize > acc ? paraRun.Pr.FontSize : acc;
            }, 0);
            return maxFontSizeInParagraph > pAcc ? maxFontSizeInParagraph : pAcc;
        }, 0);
    };

    CDrawingDocContent.prototype.getBulletImages = function (arrImages) {
        var aParagraphs = this.Content;
        var sImageId;
        for(var nPar = 0; nPar < aParagraphs.length; ++nPar)
        {
            var oPr = aParagraphs[nPar].Pr;
            if(oPr.Bullet)
            {
                sImageId = oPr.Bullet.getImageBulletURL();
                if(sImageId)
                {
                    arrImages.push(sImageId);
                }
            }
        }
    };

    CDrawingDocContent.prototype.GetFieldByType = function (sType) {
        var sType_ = sType.toLowerCase();
        var oField;
        for(var i = 0; i < this.AllFields.length; ++i){
            oField = this.AllFields[i];
            if(oField.GetFieldType() === sType_){
                return oField;
            }
        }
        return null;
    };

    CDrawingDocContent.prototype.GetFieldByType2 = function (sType) {
        var sType_ = sType.toLowerCase();
        var oField;
        var sFieldType;
        for(var i = 0; i < this.AllFields.length; ++i){
            oField = this.AllFields[i];
            sFieldType = oField.GetFieldType();
            if(typeof sFieldType === "string" && sFieldType.indexOf(sType_) === 0){
                return oField;
            }
        }
        return null;
    };

    CDrawingDocContent.prototype.GetAllDrawingObjects = function(arrDrawings){
        if (undefined === arrDrawings || null === arrDrawings)
            arrDrawings = [];
        return arrDrawings;
    };
    CDrawingDocContent.prototype.GetSummaryHeight = function(){
        var fSummHeight = 0;
        var nColumnsCount = this.GetColumnCount();
        for(var i = 0; i < this.Pages.length; ++i){
            var oPage = this.Pages[i];
            var fPageHeight = 0;
            if(oPage.Sections.length > 0){
                var aColumns = oPage.Sections[0].Columns;
                for(var j = 0; j < aColumns.length; ++j){
                    var oColumn = aColumns[j];
                    for(var k = oColumn.Pos; k <= oColumn.EndPos; ++k){
                        var nElementPageIndex = this.private_GetElementPageIndex(k, i, j, nColumnsCount);
                        var fParagraphPageBottom = this.Content[k].Get_PageBounds(nElementPageIndex).Bottom;
                        if(fPageHeight < fParagraphPageBottom){
                            fPageHeight = fParagraphPageBottom;
                        }
                    }
                }
            }
            else{
                var Bounds = this.Get_PageBounds(i);
                fPageHeight = Bounds.Bottom - Bounds.Top;
            }
            fSummHeight += fPageHeight;
        }
        return fSummHeight;
    };

    CDrawingDocContent.prototype.GetSummaryHeight_ =function () {
        var dHeight = 0.0;
        for(var i = 0; i < this.Content.length; ++i){
            var oElement = this.Content[i];
            if(oElement.GetType() === type_Paragraph){
                for(var j = 0; j < oElement.Lines.length; ++j){
                    var oLine = oElement.Lines[j];
                    dHeight += (oLine.Bottom - oLine.Top - oLine.Metrics.Descent);
                }
            }
        }
        return dHeight;
    };

    // function to find the maximum width of the text inside the rect, as each line contains different widths  
    CDrawingDocContent.prototype.GetSummaryWidth =function () {
        // width of single line label 
        let width = 20000;
        if (!this.Content || !Array.isArray(this.Content )) {
            return width;
        }
        const lines = this.Content[0].Lines;
        if (lines && Array.isArray(lines)) {
            for (let i = 0; i < lines.length; i++) {
                const newWidth = lines[i] && lines[i].Ranges && Array.isArray(lines[i].Ranges) && lines[i].Ranges.length > 0 ? lines[i].Ranges[0].W : null;
                if (newWidth !== null && (i === 0 || width < newWidth)) {
                    width = newWidth;
                }
            }
        }

        return width;
    };

    // function to find the width of the unfolded 2d array, simply add width of each line
    CDrawingDocContent.prototype.getUnfoldedWidth = function (nLines) {
        // width of single line label 
        if (!this.Content || !Array.isArray(this.Content )) {
            return 20000;
        }
        let width = 0;
        const boxError = 0.1;
        const lines = this.Content[0].Lines;
        if (lines && Array.isArray(lines)) {
            for (let i = 0; i < nLines; i++) {
                if (lines.length < i) {
                    break;
                }
                const newWidth = lines[i] && lines[i].Ranges && Array.isArray(lines[i].Ranges) && lines[i].Ranges.length > 0 ? lines[i].Ranges[0].W : null;
                if (newWidth !== null) {
                    width += newWidth;
                }
            }
        }
        
        return width + boxError;
    };

    CDrawingDocContent.prototype.GetColumnCount = function(){
        var nColumnCount = 1;
        if(this.Parent.getBodyPr){
            var oBodyPr = this.Parent.getBodyPr();
            nColumnCount = AscFormat.isRealNumber(oBodyPr.numCol) ? oBodyPr.numCol : 1;
        }
        return nColumnCount;
    };
	
	CDrawingDocContent.prototype.GetPageContentFrame = function(page, sectPr){
		return this._GetColumnContentFrame(0);
	};
	
	CDrawingDocContent.prototype.GetColumnContentFrame = function(page, column, sectPr){
		return this._GetColumnContentFrame(column);
	};
	
    CDrawingDocContent.prototype._GetColumnContentFrame = function(nColumnIndex){

        var X = this.X;
        var Y = this.Y;
        var XLimit = this.XLimit;
        var YLimit = this.YLimit;
        var ColumnSpaceBefore = 0;
        var ColumnSpaceAfter = 0;
        var nNumCol = this.GetColumnCount();
        var oBodyPr = this.Parent.getBodyPr && this.Parent.getBodyPr();
        if(nNumCol > 1 && oBodyPr)
        {
            var fSpace = AscFormat.isRealNumber(oBodyPr.spcCol) ? oBodyPr.spcCol : 0;
            fSpace = Math.min(fSpace, this.XLimit/(nNumCol - 1));
            var fColumnWidth = Math.max((this.XLimit - this.X - (nNumCol - 1)*fSpace)/nNumCol, 0);
            X += nColumnIndex*(fColumnWidth + fSpace);
            XLimit = X + fColumnWidth;
            if(nColumnIndex > 0)
            {
                ColumnSpaceBefore = fSpace;
            }
            if(nColumnIndex < nNumCol - 1)
            {
                ColumnSpaceAfter = fSpace;
            }
        }
        return {
            X                 : X,
            Y                 : Y,
            XLimit            : XLimit,
            YLimit            : YLimit,
            ColumnSpaceBefore : ColumnSpaceBefore,
            ColumnSpaceAfter  : ColumnSpaceAfter
        };
    };


    CDrawingDocContent.prototype.RecalculateContent = function(fWidth, fHeight, nStartPage){
		this.Recalculated = true;
        this.CalculateAllFields();
        if(this.GetColumnCount() === 1){
            CDocumentContent.prototype.RecalculateContent.call(this, fWidth, fHeight, nStartPage);
        }
        else{
            this.Start_Recalculate(fWidth, fHeight);
            if(this.Pages.length > 1){
                var fSummaryHeight = this.GetSummaryHeight();

                var fLow = fHeight, fHigh = fSummaryHeight;
                this.Start_Recalculate(fWidth, fHigh);
                var nItCount = 0;
                while(this.Pages.length > 1 && nItCount < 5){
                    fHigh += fSummaryHeight;
                    this.Start_Recalculate(fWidth, fHigh);
                    ++nItCount;
                }
                var fNeedHeight = fHigh;
                if(this.GetColumnCount() > 1){
                    while((fHigh - fLow) > 0.1){
                        var fCheckHeight = fLow +  (fHigh - fLow)/2;
                        this.Start_Recalculate(fWidth, fCheckHeight);
                        if(this.Pages.length > 1){
                            fLow = fCheckHeight;
                        }
                        else{
                            fHigh = fCheckHeight;
                            fNeedHeight = fCheckHeight;
                        }
                    }
                }
                this.Start_Recalculate(fWidth, fNeedHeight + 0.01);
            }
        }
    };

    CDrawingDocContent.prototype.Start_Recalculate = function(fWidth, fHeight){
        this.FullRecalc.PageIndex         = 0;
        this.FullRecalc.SectionIndex      = 0;
        this.FullRecalc.ColumnIndex       = 0;
        this.FullRecalc.StartIndex        = 0;
        this.FullRecalc.Start             = true;
        this.FullRecalc.StartPage         = 0;
        this.Reset(0, 0, fWidth, fHeight);
        this.Recalculate_PageDrawing();
    };

    CDrawingDocContent.prototype.Recalculate_PageDrawing   = function()
    {
        var nColumnsCount = this.GetColumnCount();
        var nPageIndex = this.FullRecalc.PageIndex;
        this.Pages.length = nPageIndex + 1;
        if(0 === this.FullRecalc.ColumnIndex && true === this.FullRecalc.Start)
        {
            var oPage      = new AscWord.DocumentPage();
            oPage.Pos = this.FullRecalc.StartIndex;
            oPage.Sections[0] = new AscWord.DocumentPageSection();
            for (var i = 0; i < nColumnsCount; ++i)
            {
                oPage.Sections[0].Columns[i] = new AscWord.DocumentPageColumn();
            }
            this.Pages[nPageIndex] = oPage;
        }
        this.Recalculate_PageColumn();
    };

    CDrawingDocContent.prototype.Recalculate_PageColumn = function()
    {
        var nPageIndex          = this.FullRecalc.PageIndex;
        var nColumnIndex        = this.FullRecalc.ColumnIndex;
        var nStartIndex         = this.FullRecalc.StartIndex;

        var oStartPos = this._GetColumnContentFrame(nColumnIndex);
        var X = oStartPos.X;
        var Y = oStartPos.Y;
        var XLimit = oStartPos.XLimit;
        var YLimit = oStartPos.YLimit;

        var nColumnsCount = this.GetColumnCount();

        var aContent = this.Content;
        var nCount = aContent.length;
        var nRecalcResult = recalcresult_NextPage;
        var oParagraph;
        var bContinue = false;

        var oPage = this.Pages[nPageIndex];
        var oSection = oPage.Sections[0];
        var oColumn = oSection.Columns[nColumnIndex];
        oColumn.X           = X;
        oColumn.XLimit      = XLimit;
        oColumn.Y           = Y;
        oColumn.YLimit      = YLimit;
        oColumn.Pos         = nStartIndex;
        oColumn.Empty       = false;
        oColumn.SpaceBefore = oStartPos.ColumnSpaceBefore;
        oColumn.SpaceAfter  = oStartPos.ColumnSpaceAfter;
        for(var i = nStartIndex; i < nCount; ++i)
        {
            oParagraph = this.Content[i];

            if((0 === i && 0 === nPageIndex && 0 === nColumnIndex) || i != nStartIndex || (i === nStartIndex && true === this.FullRecalc.ResetStartElement))
            {
                oParagraph.Set_DocumentIndex(i);
                oParagraph.Reset(X, Y, XLimit, YLimit, nPageIndex, nColumnIndex, nColumnsCount);
            }
            var nElementPageIndex = this.private_GetElementPageIndex(i, nPageIndex, nColumnIndex, nColumnsCount);
            nRecalcResult = oParagraph.Recalculate_Page(nElementPageIndex);
            if(nRecalcResult & recalcresult_NextElement)
            {
                Y = oParagraph.Get_PageBounds(nElementPageIndex).Bottom;
            }
            oColumn.Bounds.Bottom = Y;
            if (nRecalcResult & recalcresult_CurPage)
            {
                if (nRecalcResult & recalcresultflags_Column)
                {
                    this.FullRecalc.ColumnIndex = nColumnIndex;
                }
                else
                {
                    this.FullRecalc.ColumnIndex = 0;
                }
                bContinue = true;
                break;
            }
            else if(nRecalcResult & recalcresult_NextPage)
            {
                if (nRecalcResult & recalcresultflags_LastFromNewColumn)
                {
                    oColumn.EndPos  = i - 1;
                    oSection.EndPos = i - 1;
                    oPage.EndPos    = i - 1;
                    bContinue       = true;
                    this.FullRecalc.ColumnIndex = nColumnIndex + 1;
                    this.FullRecalc.PageIndex   = nPageIndex;
                    this.FullRecalc.StartIndex  = i;
                    this.FullRecalc.Start       = true;
                    if (this.FullRecalc.ColumnIndex >= nColumnsCount)
                    {
                        this.FullRecalc.ColumnIndex = 0;
                        this.FullRecalc.PageIndex   = nPageIndex + 1;
                    }
                    break;
                }
                else if (nRecalcResult & recalcresultflags_LastFromNewPage)
                {
                    oColumn.EndPos  = i - 1;
                    oSection.EndPos = i - 1;
                    oPage.EndPos    = i - 1;
                    bContinue = true;
                    this.FullRecalc.SectionIndex = 0;
                    this.FullRecalc.ColumnIndex  = 0;
                    this.FullRecalc.PageIndex    = nPageIndex + 1;
                    this.FullRecalc.StartIndex   = i;
                    this.FullRecalc.Start        = true;
                    if (oColumn.EndPos === oColumn.Pos)
                    {
                        var Element          = this.Content[oColumn.Pos];
                        var ElementPageIndex = this.private_GetElementPageIndex(i, nPageIndex, nColumnIndex, nColumnsCount);
                        if (true === Element.IsEmptyPage(ElementPageIndex))
                            oColumn.Empty = true;
                    }
                    for (var TempColumnIndex = nColumnIndex + 1; TempColumnIndex < nColumnsCount; ++TempColumnIndex)
                    {
                        oSection.Columns[TempColumnIndex].Empty  = true;
                        oSection.Columns[TempColumnIndex].Pos    = i;
                        oSection.Columns[TempColumnIndex].EndPos = i - 1;
                    }
                    break;
                }
                else if (nRecalcResult & recalcresultflags_Page)
                {
                    oColumn.EndPos  = i;
                    oSection.EndPos = i;
                    oPage.EndPos    = i;

                    bContinue = true;

                    this.FullRecalc.SectionIndex = 0;
                    this.FullRecalc.ColumnIndex  = 0;
                    this.FullRecalc.PageIndex    = nPageIndex + 1;
                    this.FullRecalc.StartIndex   = i;
                    this.FullRecalc.Start       = true;

                    if (oColumn.EndPos === oColumn.Pos)
                    {
                        var Element          = this.Content[oColumn.Pos];
                        var ElementPageIndex = this.private_GetElementPageIndex(i, nPageIndex, nColumnIndex, nColumnsCount);
                        if (true === Element.IsEmptyPage(nElementPageIndex))
                            oColumn.Empty = true;
                    }
                    for (var TempColumnIndex = nColumnIndex + 1; TempColumnIndex < nColumnsCount; ++TempColumnIndex)
                    {
                        var ElementPageIndex = this.private_GetElementPageIndex(i, nPageIndex, TempColumnIndex, nColumnsCount);
                        this.Content[i].Recalculate_SkipPage(ElementPageIndex);
                        oSection.Columns[TempColumnIndex].Empty  = true;
                        oSection.Columns[TempColumnIndex].Pos    = i;
                        oSection.Columns[TempColumnIndex].EndPos = i - 1;
                    }
                    break;
                }
                else
                {
                    oColumn.EndPos  = i;
                    oSection.EndPos = i;
                    oPage.EndPos    = i;

                    bContinue = true;

                    this.FullRecalc.ColumnIndex = nColumnIndex + 1;
                    if (this.FullRecalc.ColumnIndex >= nColumnsCount)
                    {
                        this.FullRecalc.SectionIndex = 0;
                        this.FullRecalc.ColumnIndex  = 0;
                        this.FullRecalc.PageIndex    = nPageIndex + 1;
                    }

                    this.FullRecalc.StartIndex = i;
                    this.FullRecalc.Start     = true;

                    if (oColumn.EndPos === oColumn.Pos)
                    {
                        var Element          = this.Content[oColumn.Pos];
                        var ElementPageIndex = this.private_GetElementPageIndex(i, nPageIndex, nColumnIndex, nColumnsCount);
                        if (true === Element.IsEmptyPage(ElementPageIndex))
                            oColumn.Empty = true;
                    }

                    break;
                }
            }
        }
        if (i === nCount)
        {
            oPage.EndPos    = nCount - 1;
            oSection.EndPos = nCount - 1;
            oColumn.EndPos  = nCount  - 1;
        }
        if(bContinue)
        {
            this.Recalculate_PageDrawing();
        }
    };

    CDrawingDocContent.prototype.Draw = function(nPageIndex, pGraphics){
        if(this.Pages.length > 0){

            var oSection = this.Pages[0].Sections[0];
            if(oSection){

                pGraphics.Start_Command(AscFormat.DRAW_COMMAND_CONTENT);

                for (var ColumnIndex = 0, ColumnsCount = oSection.Columns.length; ColumnIndex < ColumnsCount; ++ColumnIndex)
                {
                    var Column         = oSection.Columns[ColumnIndex];
                    var ColumnStartPos = Column.Pos;
                    var ColumnEndPos   = Column.EndPos;

                    // Плавающие объекты не должны попадать в клип колонок
                    var FlowElements = [];

                    if (ColumnsCount > 1)
                    {
                        //    pGraphics.SaveGrState();

                        var X    = ColumnIndex === 0 ? 0 : Column.X - Column.SpaceBefore / 2;
                        // var XEnd = (ColumnIndex >= ColumnsCount - 1 ? Page.Width : Column.XLimit + Column.SpaceAfter / 2);
                        //  pGraphics.AddClipRect(X, 0, XEnd - X, Page.Height);
                    }

                    for (var ContentPos = ColumnStartPos; ContentPos <= ColumnEndPos; ++ContentPos)
                    {
                        var ElementPageIndex = this.private_GetElementPageIndex(ContentPos, 0, ColumnIndex, ColumnsCount);
                        this.Content[ContentPos].Draw(ElementPageIndex, pGraphics);
                    }

                    /*if (ColumnsCount > 1)
                     {
                     pGraphics.RestoreGrState();
                     }*/
                }

                pGraphics.End_Command();
            }

            else{
                CDocumentContent.prototype.Draw.call(this, nPageIndex, pGraphics);
            }
        }
    };

    CDrawingDocContent.prototype.Write_ToBinary2 = function(oWriter){
        oWriter.WriteLong(AscDFH.historyitem_type_DrawingContent);
        CDocumentContent.prototype.Write_ToBinary2.call(this, oWriter);
    };
    CDrawingDocContent.prototype.Read_FromBinary2 = function(oReader){
        oReader.GetLong();//type of DocumentContent
        CDocumentContent.prototype.Read_FromBinary2.call(this, oReader);
    };
    CDrawingDocContent.prototype.IsTableCellContent = function(isReturnCell){

    	if (true === isReturnCell)
    		return null;

        return false;
    };

    CDrawingDocContent.prototype.Is_ChartTitleContent = function(){
        if(this.Parent instanceof AscFormat.CTextBody &&
        this.Parent.parent instanceof AscFormat.CTitle){
            return true;
        }
        return false;
    };

    CDrawingDocContent.prototype.DrawSelectionOnPage = function(PageIndex, clipInfo){
        var CurPage = PageIndex;
        if (CurPage < 0 || CurPage >= this.Pages.length)
            return;
        var Pos_start = this.Pages[CurPage].Pos;
        var Pos_end   = this.Pages[CurPage].EndPos;
		
		clipInfo = this.IntersectClip(clipInfo, PageIndex);

        if (true === this.Selection.Use)
        {
            if(this.Selection.Flag === selectionflag_Common)
            {
                var Start = this.Selection.StartPos;
                var End   = this.Selection.EndPos;

                if (Start > End)
                {
                    Start = this.Selection.EndPos;
                    End   = this.Selection.StartPos;
                }

                var Start = Math.max(Start, Pos_start);
                var End   = Math.min(End, Pos_end);

                var Page = this.Pages[PageIndex];
                if(this.Pages[PageIndex].Sections.length === 0){
                    for (var Index = Start; Index <= End; Index++)
                    {
                        var ElementPageIndex = this.private_GetElementPageIndex(Index, CurPage, 0, 1);
                        this.Content[Index].DrawSelectionOnPage(ElementPageIndex, clipInfo);
                    }
                }
                else{
                    var PageSection = Page.Sections[0];
                    for (var ColumnIndex = 0, ColumnsCount = PageSection.Columns.length; ColumnIndex < ColumnsCount; ++ColumnIndex)
                    {
                        var Pos_start = Page.Pos;
                        var Pos_end   = Page.EndPos;

                        var Start = this.Selection.StartPos;
                        var End   = this.Selection.EndPos;

                        if (Start > End)
                        {
                            Start = this.Selection.EndPos;
                            End   = this.Selection.StartPos;
                        }

                        var Start = Math.max(Start, Pos_start);
                        var End   = Math.min(End, Pos_end);

                        for (var Index = Start; Index <= End; ++Index)
                        {
                            var ElementPage = this.private_GetElementPageIndex(Index, 0, ColumnIndex, ColumnsCount);
                            this.Content[Index].DrawSelectionOnPage(ElementPage, clipInfo);
                        }

                    }
                }

            }
        }
    };

    CDrawingDocContent.prototype.Internal_GetContentPosByXY = function(X, Y, PageNum)
    {
        if (undefined === PageNum || null === PageNum)
            PageNum = this.CurPage;
        // Теперь проверим пустые параграфы с окончанием секций
        var SectCount = this.Pages[PageNum].EndSectionParas.length;
        if(this.Pages[PageNum].Sections.length === 0){
            return CDocumentContent.prototype.Internal_GetContentPosByXY.call(this, X, Y, PageNum);
        }
        for (var Index = 0; Index < SectCount; ++Index)
        {
            var Item   = this.Pages[PageNum].EndSectionParas[Index];
            var Bounds = Item.Pages[0].Bounds;

            if (Y < Bounds.Bottom && Y > Bounds.Top && X > Bounds.Left && X < Bounds.Right)
                return Item.Index;
        }

        // Сначала мы определим секцию и колонку, в которую попали
        var Page = this.Pages[PageNum];

        var SectionIndex = 0;
        for (var SectionsCount = Page.Sections.length; SectionIndex < SectionsCount - 1; ++SectionIndex)
        {
            if (Y < Page.Sections[SectionIndex + 1].Y)
                break;
        }

        var PageSection  = this.Pages[PageNum].Sections[SectionIndex];
        var ColumnsCount = PageSection.Columns.length;
        var ColumnIndex  = 0;
        for (; ColumnIndex < ColumnsCount - 1; ++ColumnIndex)
        {
            if (X < (PageSection.Columns[ColumnIndex].XLimit + PageSection.Columns[ColumnIndex + 1].X) / 2)
                break;
        }

        // TODO: Разобраться с ситуацией, когда пустые колонки стоят не только в конце
        while (ColumnIndex > 0 && true === PageSection.Columns[ColumnIndex].Empty)
            ColumnIndex--;

        var Column   = PageSection.Columns[ColumnIndex];
        var StartPos = Column.Pos;
        var EndPos   = Column.EndPos;

        for (var Pos = StartPos; Pos < EndPos; ++Pos)
        {
            var Item = this.Content[Pos + 1];
            var PageBounds = Item.Get_PageBounds(0);
            if (Y < PageBounds.Top)
                return Pos;
        }

        if (Pos === EndPos)
        {
            return EndPos;
        }
        return 0;
    };

    CDrawingDocContent.prototype.private_GetElementPageIndexByXY = function(ElementPos, X, Y, PageIndex){
        if(this.Pages.length > 0){
            if(this.Pages[0].Sections.length > 0){
                return CDocument_prototype_private_GetElementPageIndexByXY.call(this, ElementPos, X, Y, PageIndex);
            }
        }
        return CDocumentContent.prototype.private_GetElementPageIndexByXY.call(this, ElementPos, X, Y, PageIndex);
    };
    CDrawingDocContent.prototype.Copy            = function(Parent, DrawingDocument)
    {
        var DC = new CDrawingDocContent(Parent, DrawingDocument ? DrawingDocument : this.DrawingDocument, 0, 0, 0, 0, this.Split, this.TurnOffInnerWrap, this.bPresentation);

        // Копируем содержимое
        DC.Internal_Content_RemoveAll();

        var Count = this.Content.length;
        for (var Index = 0; Index < Count; Index++)
        {
            DC.Internal_Content_Add(Index, this.Content[Index].Copy(DC, DrawingDocument, {}), false);
        }

        return DC;
    };
    CDrawingDocContent.prototype.Copy3           = function(Parent)//для заголовков диаграмм
    {
        var DC = new CDrawingDocContent(Parent, this.DrawingDocument, 0, 0, 0, 0, this.Split, this.TurnOffInnerWrap, true);

        // Копируем содержимое
        DC.Internal_Content_RemoveAll();

        var Count = this.Content.length;
        for (var Index = 0; Index < Count; Index++)
        {
            DC.Internal_Content_Add(Index, this.Content[Index].Copy2(DC), false);
        }
        return DC;
    };

    CDrawingDocContent.prototype.Recalculate = function()
    {

        if(typeof editor !== "undefined" && editor &&
            (editor.isPresentationEditor || editor.isDocumentEditor)){
               if(editor.WordControl && editor.WordControl.m_oLogicDocument){
                   editor.WordControl.m_oLogicDocument.Recalculate();
               }
        }
        else{
            if(this.Parent){
                if(this.Parent instanceof AscFormat.CShape){
                    this.Parent.recalculateContent();
                    return;
                }
                else if(this.Parent && this.Parent.parent){
                    if(this.Parent.parent instanceof AscFormat.CShape){
                        this.Parent.parent.recalculateContent();
                        return;
                    }
                }
            }
            if(this.XLimit > 0){
                this.Recalculate_PageDrawing();
            }
        }
    };


    CDrawingDocContent.prototype.ClearParagraphFormatting = function(isClearParaPr, isClearTextPr)
    {
        if (true === this.ApplyToAll)
        {
            for (var Index = 0; Index < this.Content.length; Index++)
            {
                var Item = this.Content[Index];
                Item.SetApplyToAll(true);
                Item.ClearParagraphFormatting(isClearParaPr, isClearTextPr);
                Item.SetApplyToAll(false);
            }

            return;
        }

        if (docpostype_DrawingObjects == this.CurPos.Type)
        {
            return this.LogicDocument.DrawingObjects.paragraphClearFormatting(isClearParaPr, isClearTextPr);
        }
        else //if ( docpostype_Content === this.CurPos.Type )
        {
            if (true === this.Selection.Use)
            {
                if (selectionflag_Common === this.Selection.Flag)
                {
                    var StartPos = this.Selection.StartPos;
                    var EndPos   = this.Selection.EndPos;
                    if (StartPos > EndPos)
                    {
                        var Temp = StartPos;
                        StartPos = EndPos;
                        EndPos   = Temp;
                    }

                    for (var Index = StartPos; Index <= EndPos; Index++)
                    {
                        var Item = this.Content[Index];
                        Item.ClearParagraphFormatting(isClearParaPr, isClearTextPr);
                    }
                }
            }
            else
            {
                var Item = this.Content[this.CurPos.ContentPos];
                Item.ClearParagraphFormatting(isClearParaPr, isClearTextPr);
            }
        }
    };
    CDrawingDocContent.prototype.Is_Empty = function(bDefault)
    {
        if (!bDefault) {
            if (this.isDocumentContentInSmartArtShape()) {
                var oShape = this.Parent.parent;
                var contentPoints = oShape.getSmartArtPointContent();
                if (contentPoints && contentPoints.length !== 0) {
                    var isPhldr = contentPoints.every(function (node) {
												const point = node.point;
                        return point && point.prSet && point.prSet.phldr;
                    });
                    if (isPhldr) {
                        return true;
                    }
                }
            }
        }
        return CDocumentContent.prototype.Is_Empty.call(this);
    };
	CDrawingDocContent.prototype.Shift = function(pageIndex, dx, dy, keepClip) {
		if (!this.IsRecalculated() || pageIndex !== 0)
			return;
		
		this.Pages[0].Shift(dx, dy);
		
		if (this.ClipInfo[0] && true !== keepClip)
			this.ClipInfo[0].shift(dx, dy);
		
		if (this.GetColumnCount() > 1) {
			let pageSection = this.Pages[0].Sections[0];
			if (!pageSection)
				return;
			
			for (let columnIndex = 0, columnCount = pageSection.Columns.length; columnIndex < columnCount; ++columnIndex) {
				let pageColumn = pageSection.Columns[columnIndex];
				
				let startPos = pageColumn.Pos;
				let endPos   = pageColumn.EndPos;
				for (let pos = startPos; pos <= endPos; ++pos) {
					let element          = this.Content[pos];
					let elementPageIndex = element.GetElementPageIndex(0, columnIndex, columnCount);
					element.Shift(elementPageIndex, dx, dy);
				}
			}
		} else {
			let startPos = this.Pages[pageIndex].Pos;
			let endPos   = this.Pages[pageIndex].EndPos;
			for (let pos = startPos; pos <= endPos; ++pos) {
				let element          = this.Content[pos];
				let elementPageIndex = element.GetElementPageIndex(0, 0, 1);
				element.Shift(elementPageIndex, dx, dy);
			}
		}
	};

    CDrawingDocContent.prototype.isDocumentContentInSmartArtShape = function () {
        return this.Parent && this.Parent.parent && this.Parent.parent.isObjectInSmartArt && this.Parent.parent.isObjectInSmartArt();
    };

	CDrawingDocContent.prototype.RecalcAllFields = function() {
		const aFields = this.AllFields;
		for(let nField = 0; nField < aFields.length; ++nField)
		{
			let oField = aFields[nField];
			oField.RecalcMeasure();
			oField.Refresh_RecalcData2();
		}
	};

    CDrawingDocContent.prototype.getDrawingDocument = function() {
        if(this.Parent && this.Parent.getDrawingDocument) {
            return this.Parent.getDrawingDocument();
        }
        return null;
    };
    CDrawingDocContent.prototype.GetLogicDocument = function() {
        if(Asc.editor.private_GetLogicDocument)
            return Asc.editor.private_GetLogicDocument();
        return null;
    };
		CDrawingDocContent.prototype.Remove = function (Count, bOnlyText, bRemoveOnlySelection, bOnTextAdd, isWord) {
			const res = CDocumentContent.prototype.Remove.call(this, Count, bOnlyText, bRemoveOnlySelection, bOnTextAdd, isWord);
			const oShape = this.Is_DrawingShape(true);
			if (oShape) {
				oShape.onRemoveContent();
			}
			return res;
		}
		CDrawingDocContent.prototype.getCharContentLength = function () {
			let nContentLength = 0;
			this.CheckRunContent(function (oRun) {
				nContentLength += oRun.Content.length;
			});
			return nContentLength;
		};
    // TODO: сделать по-нормальному!!!
    function CDocument_prototype_private_GetElementPageIndexByXY(ElementPos, X, Y, PageIndex)
    {
        var Element = this.Content[ElementPos];
    	if (!Element)
    		return 0;

    	var Page = this.Pages[PageIndex];
    	if (!Page)
    		return 0;

    	var PageSection = null;
    	for (var SectionIndex = 0, SectionsCount = Page.Sections.length; SectionIndex < SectionsCount; ++SectionIndex)
    	{
    		if (Page.Sections[SectionIndex].Pos <= ElementPos && ElementPos <= Page.Sections[SectionIndex].EndPos)
    		{
    			PageSection = Page.Sections[SectionIndex];
    			break;
    		}
    	}

    	if (!PageSection)
    		return 0;

    	var ElementStartPage   = Element.GetRelativeStartPage();
    	var ElementStartColumn = Element.GetStartColumn();
    	var ElementPagesCount  = Element.Get_PagesCount();

    	var ColumnsCount = PageSection.Columns.length;
    	var StartColumn  = 0;
    	var EndColumn    = ColumnsCount - 1;

    	if (PageIndex === ElementStartPage)
    	{
    		StartColumn = Element.GetStartColumn();
    		EndColumn   = Math.min(ElementStartColumn + ElementPagesCount - 1, ColumnsCount - 1);
    	}
    	else
    	{
    		StartColumn = 0;
    		EndColumn   = Math.min(ElementPagesCount - ElementStartColumn + (PageIndex - ElementStartPage) * ColumnsCount, ColumnsCount - 1);
    	}

    	// TODO: Разобраться с ситуацией, когда пустые колонки стоят не только в конце
    	while (true === PageSection.Columns[EndColumn].Empty && EndColumn > StartColumn)
    		EndColumn--;

    	var ResultColumn = EndColumn;
    	for (var ColumnIndex = StartColumn; ColumnIndex < EndColumn; ++ColumnIndex)
    	{
    		if (X < (PageSection.Columns[ColumnIndex].XLimit + PageSection.Columns[ColumnIndex + 1].X) / 2)
    		{
    			ResultColumn = ColumnIndex;
    			break;
    		}
    	}

    	return this.private_GetElementPageIndex(ElementPos, PageIndex, ResultColumn, ColumnsCount);
    }

    function fReadParagraphs(reader) {

    }

    AscFormat.CDrawingDocContent = CDrawingDocContent;
})(window);