/*
 * (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";

// Import
var g_oTextMeasurer = AscCommon.g_oTextMeasurer;

function CMathDegreePr(ctrPr)
{
	this.type	= DEGREE_SUPERSCRIPT;
	this.ctrPr	= new CMathCtrlPr(ctrPr);
}
CMathDegreePr.prototype.GetRPr = function ()
{
	return this.ctrPr.GetRPr();
}
CMathDegreePr.prototype.Set_FromObject = function(Obj)
{
    if (DEGREE_SUPERSCRIPT === Obj.type || DEGREE_SUBSCRIPT === Obj.type)
        this.type = Obj.type;
    else
        this.type = DEGREE_SUPERSCRIPT;

	this.ctrPr.SetRPr(Obj.ctrPrp);
};
CMathDegreePr.prototype.Copy = function()
{
    var NewPr = new CMathDegreePr();
    NewPr.type = this.type;
	NewPr.ctrPr   = this.ctrPr;
    return NewPr;
};
CMathDegreePr.prototype.Write_ToBinary = function(Writer)
{
    // Long : type
    Writer.WriteLong(this.type);

	Writer.WriteBool(true);
	this.ctrPr.Write_ToBinary(Writer);
};
CMathDegreePr.prototype.Read_FromBinary = function(Reader)
{
    // Long : type
    this.type = Reader.GetLong(Reader);

	if (Reader.GetBool())
	{
		this.ctrPr.Read_FromBinary(Reader);
	}
};

/**
 *
 * @param props
 * @param bInside
 * @constructor
 * @extends {CMathBase}
 */
function CDegreeBase(props, bInside)
{
	CMathBase.call(this, bInside);

	this.upBase = 0; // отступ сверху для основания
	this.upIter = 0; // отступ сверху для итератора

	this.Pr = new CMathDegreePr(this.CtrPrp);

	this.baseContent = null;
	this.iterContent = null;

	this.bNaryInline = false;

	if(props !== null && typeof(props) !== "undefined")
		this.init(props);
}
CDegreeBase.prototype = Object.create(CMathBase.prototype);
CDegreeBase.prototype.constructor = CDegreeBase;
CDegreeBase.prototype.init = function(props)
{
    this.setProperties(props);
    this.setDimension(1, 2);
};
CDegreeBase.prototype.fillContent = function()
{
    this.setDimension(1, 2);
    this.elements[0][0] = this.baseContent;
    this.elements[0][1] = this.iterContent;
};
CDegreeBase.prototype.PreRecalc = function(Parent, ParaMath, ArgSize, RPI, GapsInfo)
{
    this.Parent = Parent;
    this.ParaMath = ParaMath;

    this.Set_CompiledCtrPrp(Parent, ParaMath, RPI);

    this.ApplyProperties(RPI);

    if(this.bInside == false)
        GapsInfo.setGaps(this, this.TextPrControlLetter.FontSize);

    this.baseContent.PreRecalc(this, ParaMath, ArgSize, RPI);

    var ArgSzDegr = ArgSize.Copy();
    ArgSzDegr.Decrease();

    this.bNaryInline = RPI.bNaryInline;

    var bDecreasedComp = RPI.bDecreasedComp;
    RPI.bDecreasedComp = true;

    this.iterContent.PreRecalc(this, ParaMath, ArgSzDegr, RPI);

    RPI.bDecreasedComp = bDecreasedComp;
};
CDegreeBase.prototype.Resize = function(oMeasure, RPI)
{
    this.baseContent.Resize(oMeasure, RPI);

    this.iterContent.Resize(oMeasure, RPI);

    this.setDistance();

    if(this.Pr.type === DEGREE_SUPERSCRIPT)
        this.GetSizeSup(oMeasure);
    else if(this.Pr.type === DEGREE_SUBSCRIPT)
        this.GetSizeSubScript(oMeasure);
};
CDegreeBase.prototype.recalculateSize = function(oMeasure)
{
    var Metric = new CMathBoundsMeasures();
    Metric.UpdateMetrics(this.baseContent.size);
    Metric.SetWidth(this.baseContent.size.width);

    this.setDistance();

    var ResultSize;

    if(this.Pr.type === DEGREE_SUPERSCRIPT)
    {
        ResultSize = this.GetSizeSup(oMeasure, Metric);
    }
    else if(this.Pr.type === DEGREE_SUBSCRIPT)
    {
        ResultSize = this.GetSizeSubScript(oMeasure, Metric);
    }

    this.size.Set(ResultSize);
};
CDegreeBase.prototype.GetSizeSup = function(oMeasure, Metric)
{
    var iter       = this.iterContent.size,
        baseAsc    = Metric.Asc,
        baseHeight = Metric.H,
        baseWidth  = Metric.W;

    var mgCtrPrp = this.Get_TxtPrControlLetter();

    this.upBase = 0;
    this.upIter = 0;

    var bTextElement = false,
        lastElem;

    if(!this.baseContent.IsJustDraw())
    {
        lastElem = this.baseContent.GetLastElement();

        var bSameFontSize  = lastElem.Type == para_Math_Run && (mgCtrPrp.FontSize === lastElem.Math_GetFontSize(false));
        bTextElement = bSameFontSize || (lastElem.Type !== para_Math_Run && lastElem.IsJustDraw());
    }

    var PlH = 0.64*this.ParaMath.GetPlh(oMeasure, mgCtrPrp);
    var UpBaseline = 0.75*PlH; // расстояние от baseline основания до бейзлайна итератора

    if(bTextElement)
    {
        var last = lastElem.size,
            upBaseLast = 0,
            upBaseIter = 0;

        if( (last.ascent - UpBaseline) + (iter.height - iter.ascent) >  (last.ascent - 2/9*PlH) )
            upBaseLast = iter.height - (last.ascent - 2/9*PlH);
        else if(UpBaseline + iter.ascent > last.ascent)
            upBaseLast = UpBaseline + iter.ascent - last.ascent;
        else
            upBaseIter = last.ascent - UpBaseline - iter.ascent;

        if(upBaseLast + last.ascent > baseAsc)
        {
            this.upBase = upBaseLast - (baseAsc - last.ascent);
            this.upIter = upBaseIter;
        }
        else
        {
            this.upBase = 0;
            this.upIter = (baseAsc - upBaseLast - last.ascent) + upBaseIter;
        }
    }
    else
    {
        var shCenter = this.ParaMath.GetShiftCenter(oMeasure, mgCtrPrp);

        if(iter.height - iter.ascent + shCenter > baseAsc) // для дробей и т.п.
        {
            this.upBase = iter.height - (baseAsc - shCenter);
        }
        else if(iter.ascent > shCenter)
        {
            this.upBase = iter.ascent - shCenter;
        }
        else
        {
            this.upIter = shCenter - iter.ascent;
        }
    }

    var height = this.upBase + baseHeight;
    var ascent = this.upBase + baseAsc;

    this.upIter -= ascent;

    var width = baseWidth + iter.width + this.dW;
    width += this.GapLeft + this.GapRight;

    var ResultSize = new CMathSize();

    ResultSize.height = height;
    ResultSize.width  = width;
    ResultSize.ascent = ascent;

    return ResultSize;
};
CDegreeBase.prototype.GetSizeSubScript = function(oMeasure, Metric)
{
    var iter       = this.iterContent.size,
        baseAsc    = Metric.Asc,
        baseHeight = Metric.H,
        baseWidth  = Metric.W;

    var mgCtrPrp = this.Get_TxtPrControlLetter();
    var shCenter = this.ParaMath.GetShiftCenter(oMeasure, mgCtrPrp);

    var bTextElement = false;

    if(!this.baseContent.IsJustDraw())
    {
        var lastElem = this.baseContent.GetLastElement();

        var bSameFontSize  = lastElem.Type == para_Math_Run && (mgCtrPrp.FontSize === lastElem.Math_GetFontSize(false));
        bTextElement      = bSameFontSize || (lastElem.Type !== para_Math_Run && lastElem.IsJustDraw());
    }

    var height, ascent, descent;

    var PlH = 0.64*this.ParaMath.GetPlh(oMeasure, mgCtrPrp);

    if(bTextElement)
    {
        //var last = lastElem.size;
        var DownBaseline = 0.9*shCenter;

        if(iter.ascent - DownBaseline > 3/4*PlH)
            this.upIter = 1/4*PlH;
        else
            this.upIter = PlH + DownBaseline - iter.ascent;

        if(baseAsc > PlH)
        {
            this.upIter += baseAsc - PlH;
        }

        //this.upIter = base.ascent + DownBaseline - iter.ascent;

        var descentBase = baseHeight - baseAsc,
            descentIter = this.upIter + iter.height - baseAsc;

        descent = descentBase > descentIter ? descentBase : descentIter;
        ascent  = baseAsc;

        height = ascent + descent;
    }
    else
    {
        this.upIter = baseHeight + shCenter - iter.ascent;

        // ограничение для случая, когда аскент итератора >> высоты основания
        if(baseAsc - 1.5*shCenter > this.upIter)
            this.upIter = baseAsc - 1.5*shCenter;

        height = this.upIter + iter.height;
        ascent = baseAsc;
    }

    this.upIter -= ascent;

    var width = baseWidth + iter.width + this.dW;
    width += this.GapLeft + this.GapRight;

    var ResultSize = new CMathSize();

    ResultSize.height = height;
    ResultSize.width  = width;
    ResultSize.ascent = ascent;

    return ResultSize;
};
CDegreeBase.prototype.setDistance = function()
{
    var mgCtrPrp = this.Get_TxtPrControlLetter();
    var PlH = 0.64*this.ParaMath.GetPlh(g_oTextMeasurer, mgCtrPrp);

    if( this.bNaryInline)
        this.dW = 0.17*PlH;
    else
        this.dW = 0.056*PlH;
};
CDegreeBase.prototype.setPosition = function(pos, PosInfo)
{
    this.UpdatePosBound(pos, PosInfo);

    var Line  = PosInfo.CurLine,
        Range = PosInfo.CurRange;
    var CurLine = Line - this.StartLine;
    var CurRange = ( 0 === CurLine ? Range - this.StartRange : Range );

    var X, Y;

    if(this.bOneLine)
    {
        this.pos.x = pos.x;

        if(this.bInside === true)
        {
            this.pos.y = pos.y;
        }
        else
        {
            this.pos.y = pos.y - this.size.ascent;
        }
        X = this.pos.x + this.BrGapLeft;
        Y = this.pos.y;

        var PosBase = new CMathPosition();
        PosBase.y = Y;
        PosBase.x = X;

        PosBase.y += this.size.ascent - this.baseContent.size.ascent;

        if(!this.baseContent.IsJustDraw())
            PosBase.y += this.baseContent.size.ascent;

        this.baseContent.setPosition(PosBase, PosInfo);

        var PosIter = new CMathPosition();
        PosIter.x = X + this.baseContent.size.width + this.dW;
        PosIter.y = Y + this.size.ascent + this.upIter + this.iterContent.size.ascent;

        this.iterContent.setPosition(PosIter, PosInfo);

        pos.x += this.size.width;
    }
    else
    {
        if(CurLine == 0 && CurRange == 0)
            pos.x += this.BrGapLeft;

        Y = pos.y;

        this.baseContent.setPosition(pos, PosInfo);

        var EndPos   = this.protected_GetRangeEndPos(CurLine, CurRange);
        var Lng = this.Content.length;

        if(EndPos == Lng - 1)
        {
            pos.x += this.dW;

            pos.y += this.upIter + this.iterContent.size.ascent;

            this.iterContent.setPosition(pos, PosInfo);

            pos.x += this.BrGapRight;
        }

        pos.y = Y;
    }
};
CDegreeBase.prototype.getIterator = function()
{
    return this.iterContent;
};
CDegreeBase.prototype.getUpperIterator = function()
{
    return this.iterContent;
};
CDegreeBase.prototype.getLowerIterator = function()
{
    return this.iterContent;
};
CDegreeBase.prototype.getBase = function()
{
    return this.baseContent;
};
CDegreeBase.prototype.IsPlhIterator = function()
{
    return this.iterContent.IsPlaceholder();
};
CDegreeBase.prototype.setBase = function(base)
{
    this.baseContent = base;
};
CDegreeBase.prototype.setIterator = function(iterator)
{
    this.iterContent = iterator;
};

/**
 *
 * @param props
 * @param bInside
 * @constructor
 * @extends {CDegreeBase}
 */
function CDegree(props, bInside)
{
	CDegreeBase.call(this, props, bInside);

    this.Id = AscCommon.g_oIdCounter.Get_NewId();

    if(props !== null && typeof(props) !== "undefined")
        this.init(props);

    AscCommon.g_oTableId.Add( this, this.Id );
}
CDegree.prototype = Object.create(CDegreeBase.prototype);
CDegree.prototype.constructor = CDegree;
CDegree.prototype.ClassType = AscDFH.historyitem_type_deg;
CDegree.prototype.kind      = MATH_DEGREE;
CDegree.prototype.init = function(props)
{
    this.Fill_LogicalContent(2, props.content);

    this.setProperties(props);
    this.fillContent();
};
CDegree.prototype.fillContent = function()
{
    this.NeedBreakContent(0);

    this.iterContent = this.Content[1];
    this.baseContent = this.Content[0];

    CDegreeBase.prototype.fillContent.call(this);
};
CDegree.prototype.Recalculate_LineMetrics = function(PRS, ParaPr, _CurLine, _CurRange, ContentMetrics)
{
    var CurLine = _CurLine - this.StartLine;
    var CurRange = (0 === CurLine ? _CurRange - this.StartRange : _CurRange);

    if(PRS.bFastRecalculate === false)
    {
        this.Bounds.Reset(CurLine, CurRange);
    }

    if(this.bOneLine == false && this.baseContent.Math_Is_End( _CurLine, _CurRange))
    {
        // чтобы при вычислении метрик итератора не были перебили метрики (например, у внутр мат объекта Asc может быть больше Asc текущего объекта)

        var NewContentMetrics = new CMathBoundsMeasures();
        this.iterContent.Recalculate_LineMetrics(PRS, ParaPr, _CurLine, _CurRange, NewContentMetrics);
        this.baseContent.Recalculate_LineMetrics(PRS, ParaPr, _CurLine, _CurRange, NewContentMetrics);

        var BoundBase = this.baseContent.Get_LineBound(_CurLine, _CurRange);
        var Bound;

        if(this.Pr.type === DEGREE_SUPERSCRIPT)
        {
            Bound = this.GetSizeSup(g_oTextMeasurer, BoundBase);
        }
        else
        {
            Bound = this.GetSizeSubScript(g_oTextMeasurer, BoundBase);
        }

        this.Bounds.UpdateMetrics(CurLine, CurRange, Bound);
        ContentMetrics.UpdateMetrics(Bound);

        this.UpdatePRS(PRS, Bound);
    }
    else
    {
        CDegreeBase.prototype.Recalculate_LineMetrics.call(this, PRS, ParaPr, _CurLine, _CurRange, ContentMetrics);
    }

};
CDegree.prototype.setPosition = function(pos, PosInfo)
{
    var Line  = PosInfo.CurLine,
        Range = PosInfo.CurRange;
    var CurLine = Line - this.StartLine;
    var CurRange = ( 0 === CurLine ? Range - this.StartRange : Range );

    var EndPos   = this.protected_GetRangeEndPos(CurLine, CurRange);
    var Len = this.Content.length;

    // у степени всегда итератор идет в конце, поэтому сделать проверку на то, что текущий контент последний (т.е. это и будет итератор)

    if(this.bOneLine || EndPos == Len - 1)
    {
        CDegreeBase.prototype.setPosition.call(this, pos, PosInfo);
    }
    else
    {
        CMathBase.prototype.setPosition.call(this, pos, PosInfo);
    }
};
CDegree.prototype.Get_InterfaceProps = function()
{
    var Type = this.Pr.type == DEGREE_SUBSCRIPT ? Asc.c_oAscMathInterfaceScript.Sub : Asc.c_oAscMathInterfaceScript.Sup;
    return new CMathMenuScript(this, Type);
};
CDegree.prototype.Can_ModifyArgSize = function()
{
    return this.CurPos == 1 && false === this.Is_SelectInside(); // находимся в итераторе
};
CDegree.prototype.GetTextOfElement = function(oMathText)
{
	oMathText = new AscMath.MathTextAndStyles(oMathText);

	let oBase           = this.getBase();
	let oIterator       = this.getIterator();

	if (oMathText.IsLaTeX())
		oMathText.SetNotWrap();

	oMathText.Add(oBase, true, oMathText.IsLaTeX() ? 1 : undefined);
	oMathText.AddText(new AscMath.MathText(this.Pr.type === 1 ? "^" : "_", this));
	oMathText.SetGlobalStyle(this);
	oMathText.Add(oIterator, true, oMathText.IsLaTeX() ? 1 : undefined);

	return oMathText;
};
CDegree.fromMathMLContentMarkup = function (reader, base, sub, type)
{
	let text		= reader.GetText();
	let props		= new CMathDegreePr();

	props.type		= type;
	props.content	= [
		AscWord.ParaMath.createContentFromText(sub ? sub : text),
		AscWord.ParaMath.createContentFromText(base)
	];

	let textOfBase = props.content[0].GetTextOfElement().GetText();
	if (AscMath.MathLiterals.nary.SearchU(textOfBase))
	{
		let nary = new AscMath.Nary.fromMathMLSubSup(props, false, false);
		return nary;
	}

	return new AscMath.Degree(props);
};
/**
 *
 * @param iterUp
 * @param iterDn
 * @constructor
 * @extends {CMathBase}
 */
function CIterators(iterUp, iterDn)
{
	CMathBase.call(this, true);

    this.iterUp = iterUp;
    this.iterDn = iterDn;
}
CIterators.prototype = Object.create(CMathBase.prototype);
CIterators.prototype.constructor = CIterators;
CIterators.prototype.init = function()
{
    this.setDimension(2, 1);
    this.elements[0][0] = this.iterUp;
    this.elements[1][0] = this.iterDn;
};
CIterators.prototype.PreRecalc = function(Parent, ParaMath, ArgSize, RPI, GapsInfo)
{
    this.Parent = Parent;
    this.ParaMath = ParaMath;

    this.ArgSize.SetValue(-1);

    var ArgSzIters = ArgSize.Copy();
    ArgSzIters.Merge(this.ArgSize);

    this.Set_CompiledCtrPrp(Parent, ParaMath, RPI);

    var bDecreasedComp = RPI.bDecreasedComp;
    RPI.bDecreasedComp = true;

    this.iterUp.PreRecalc(this, ParaMath, ArgSzIters, RPI);
    this.iterDn.PreRecalc(this, ParaMath, ArgSzIters, RPI);

    RPI.bDecreasedComp = bDecreasedComp;
};
CIterators.prototype.recalculateSize = function(oMeasure, dH, ascent)
{
    this.dH = dH;

    var iterUp = this.iterUp.size,
        iterDown = this.iterDn.size;

    this.size.ascent = ascent;
    this.size.height = iterUp.height + dH + iterDown.height;
    this.size.width  = iterUp.width > iterDown.width ? iterUp.width : iterDown.width;

};
CIterators.prototype.getUpperIterator = function()
{
    return this.elements[0][0];
};
CIterators.prototype.getLowerIterator = function()
{
    return this.elements[1][0];
};
CIterators.prototype.setUpperIterator = function(iterator)
{
    this.elements[0][0] = iterator;
};
CIterators.prototype.setLowerIterator = function(iterator)
{
    this.elements[1][0] = iterator;
};
CIterators.prototype.alignIterators = function(mcJc)
{
    this.alignment.wdt[0] = mcJc;
};
CIterators.prototype.setPosition = function(pos, PosInfo)
{
     this.pos.x = pos.x;
     this.pos.y = pos.y;

    var UpIterPos = new CMathPosition();
    var al = this.align(0, 0);

    UpIterPos.x = this.pos.x + this.GapLeft + al.x;
    UpIterPos.y = this.pos.y + this.iterUp.size.ascent;

    var DownIterPos = new CMathPosition();
    al = this.align(1, 0);

    DownIterPos.x = this.pos.x + this.GapLeft + al.x;
    DownIterPos.y = this.pos.y + this.dH + this.iterUp.size.height + this.iterDn.size.ascent;

    // сначала выставляем setPosition у верхнего итератора, потом у нижнего
    // такой порядок нужен для выравнивания Box по операторам (так же как в Ворде)

    this.iterDn.setPosition(DownIterPos, PosInfo);
    this.iterUp.setPosition(UpIterPos, PosInfo);

    pos.x += this.size.width;
};

function CMathDegreeSubSupPr(ctrPr)
{
	this.type	= DEGREE_SubSup;
	this.alnScr	= false;// не выровнены, итераторы идут в соответствии с наклоном буквы/мат. объекта
	this.ctrPr	= new CMathCtrlPr(ctrPr);
}
CMathDegreeSubSupPr.prototype.GetRPr = function ()
{
	return this.ctrPr.GetRPr();
}
CMathDegreeSubSupPr.prototype.Set_FromObject = function(Obj)
{
    if (true === Obj.alnScr || 1 === Obj.alnScr)
        this.alnScr = true;
    else
        this.alnScr = false;

    if (DEGREE_SubSup === Obj.type || DEGREE_PreSubSup === Obj.type)
        this.type = Obj.type;

	this.ctrPr.SetRPr(Obj.ctrPrp);
};
CMathDegreeSubSupPr.prototype.Copy = function()
{
    var NewPr = new CMathDegreeSubSupPr();

    NewPr.type   = this.type;
    NewPr.alnScr = this.alnScr;
    NewPr.ctrPr = this.ctrPr;

    return NewPr;
};
CMathDegreeSubSupPr.prototype.Write_ToBinary = function(Writer)
{
    // Long : type
    // Bool : alnScr

    Writer.WriteLong(this.type);
    Writer.WriteBool(this.alnScr);

	Writer.WriteBool(true);
	this.ctrPr.Write_ToBinary(Writer);
};
CMathDegreeSubSupPr.prototype.Read_FromBinary = function(Reader)
{
    // Long : type
    // Bool : alnScr

    this.type   = Reader.GetLong();
    this.alnScr = Reader.GetBool();

	if (Reader.GetBool())
	{
		this.ctrPr.Read_FromBinary(Reader);
	}
};

/**
 *
 * @param props
 * @param bInside
 * @constructor
 * @extends {CMathBase}
 */
function CDegreeSubSupBase(props, bInside)
{
	CMathBase.call(this, bInside);

	this.bNaryInline = false;

	this.Pr = new CMathDegreeSubSupPr(this.CtrPrp);

	this.baseContent = null;
	this.iters       = new CIterators(null, null);

	if(props !== null && typeof(props) !== "undefined")
		this.init(props);
}
CDegreeSubSupBase.prototype = Object.create(CMathBase.prototype);
CDegreeSubSupBase.prototype.constructor = CDegreeSubSupBase;
CDegreeSubSupBase.prototype.init = function(props)
{
    this.setProperties(props);
    this.setDimension(1, 2);
};
CDegreeSubSupBase.prototype.fillContent = function()
{
    var oBase  = this.baseContent;
    var oIters = this.iters;

    this.setDimension(1, 2);

    oIters.init();

    if(this.Pr.type == DEGREE_SubSup)
    {
        oIters.alignIterators(MCJC_LEFT);
        this.addMCToContent([oBase, oIters]);
    }
    else if(this.Pr.type == DEGREE_PreSubSup)
    {
        this.addMCToContent([oIters, oBase]);
        oIters.alignIterators(MCJC_RIGHT);
    }
};
CDegreeSubSupBase.prototype.PreRecalc = function(Parent, ParaMath, ArgSize, RPI, GapsInfo)
{
    this.bNaryInline = RPI.bNaryInline;

	CMathBase.prototype.PreRecalc.call(this, Parent, ParaMath, ArgSize, RPI, GapsInfo);
};
CDegreeSubSupBase.prototype.recalculateSize = function(oMeasure)
{
    var Metric = new CMathBoundsMeasures();
    Metric.UpdateMetrics(this.baseContent.size);
    Metric.SetWidth(this.baseContent.size.width);

    var ResultSize = this.GetSize(oMeasure, Metric);

    this.size.Set(ResultSize);
};
CDegreeSubSupBase.prototype.GetSize = function(oMeasure, Metric)
{
    var mgCtrPrp = this.Get_CompiledCtrPrp(); // Get_CompiledCtrPrp -  чтобы итераторы не разъезжались
    // половину ascent брать нельзя, т.к. черта дроби будет разделительной для верхнего и нижнего итератора => соответственно
    // если числитель меньше/больше знаменателя расположение итераторов у степени будет неправильным

    var iterUp   = this.iters.iterUp.size,
        iterDown = this.iters.iterDn.size;

    var baseAsc    = Metric.Asc,
        baseHeight = Metric.H,
        baseWidth  = Metric.W;

    var shCenter = 1.4*this.ParaMath.GetShiftCenter(oMeasure, mgCtrPrp);

    var PlH = 0.26*this.ParaMath.GetPlh(oMeasure, mgCtrPrp);

    var height, width, ascent, descent;

    var dH; // of Iterators
    var minGap;

    var TextElement = false;

    if(!this.baseContent.IsJustDraw())
    {
        var bFirstItem = this.Pr.type == DEGREE_SubSup;
        var BaseItem = bFirstItem ? this.baseContent.GetLastElement() : this.baseContent.GetFirstElement();

        var bSameFontSize  = BaseItem.Type == para_Math_Run && (mgCtrPrp.FontSize === BaseItem.Math_GetFontSize(bFirstItem));
        TextElement  = bSameFontSize || (BaseItem.Type !== para_Math_Run && BaseItem.IsJustDraw());
    }

    if(TextElement)
    {
        minGap =  0.5*PlH;

        var DivBaseline = 3.034*PlH;
        var ascIters, dgrHeight;

        if(DivBaseline > minGap + iterDown.ascent + (iterUp.height - iterUp.ascent))
        {
            dH = DivBaseline - iterDown.ascent - (iterUp.height - iterUp.ascent);
        }
        else
        {
            dH = minGap;
        }

        var GapDown = PlH;

        ascIters = iterUp.height + dH + GapDown;
        dgrHeight = iterDown.height + iterUp.height + dH;

        ascent = ascIters > baseAsc ? ascIters : baseAsc;

        var dscIter = dgrHeight - ascIters,
            dscBase = baseHeight - baseAsc;

        descent = dscIter > dscBase ? dscIter : dscBase;
        height = ascent + descent;

        this.iters.recalculateSize(oMeasure, dH, ascIters /*ascent of Iterators*/);
    }
    else
    {
        minGap =  0.7*PlH;

        var lUpBase    = baseAsc - shCenter; // center of base
        var lDownBase  = baseHeight - lUpBase; // height - center of base


        var DescUpIter  = iterUp.height - iterUp.ascent + PlH;
        var AscDownIter = iterDown.ascent - PlH;

        var UpGap, DownGap;

        if(this.bNaryInline)
        {
            UpGap   = 0;
            DownGap = 0;
        }
        else
        {
            UpGap   = lUpBase > DescUpIter    ? lUpBase   - DescUpIter  : 0;           // расстояние от центра основания до верхнего итератора
            DownGap = lDownBase > AscDownIter ? lDownBase - AscDownIter : 0;           // расстояние от центра основания до нижнего итератора
        }

        if(UpGap + DownGap > minGap)
            dH = UpGap + DownGap;
        else
            dH = minGap;

        height = iterUp.height + dH + iterDown.height;
        ascent = iterUp.height + UpGap + shCenter;

        this.iters.recalculateSize(oMeasure, dH, ascent/*ascent of Iterators*/);
    }

    if( this.bNaryInline)
        this.dW = 0.42*PlH;
    else
        this.dW = 0.14*PlH;

    width  = this.iters.size.width + baseWidth + this.dW;
    width += this.GapLeft + this.GapRight;

    var ResultSize = new CMathSize();

    ResultSize.height = height;
    ResultSize.width  = width;
    ResultSize.ascent = ascent;

    return ResultSize;
};
CDegreeSubSupBase.prototype.getBase = function()
{
    return this.baseContent;
};
CDegreeSubSupBase.prototype.getUpperIterator = function()
{
    return this.iters.iterUp;
};
CDegreeSubSupBase.prototype.getLowerIterator = function()
{
    return this.iters.iterDn;
};
CDegreeSubSupBase.prototype.setBase = function(base)
{
    this.baseContent = base;
};
CDegreeSubSupBase.prototype.setUpperIterator = function(iterator)
{
    this.iters.iterUp = iterator;
};
CDegreeSubSupBase.prototype.setLowerIterator = function(iterator)
{
    this.iters.iterDn = iterator;
};

/**
 *
 * @param props
 * @param bInside
 * @constructor
 * @extends {CDegreeSubSupBase}
 */
function CDegreeSubSup(props, bInside)
{
	CDegreeSubSupBase.call(this, props, bInside);

    this.Id = AscCommon.g_oIdCounter.Get_NewId();

    if(props !== null && typeof(props) !== "undefined")
        this.init(props);

    AscCommon.g_oTableId.Add( this, this.Id );
}
CDegreeSubSup.prototype = Object.create(CDegreeSubSupBase.prototype);
CDegreeSubSup.prototype.constructor = CDegreeSubSup;
CDegreeSubSup.prototype.ClassType = AscDFH.historyitem_type_deg_subsup;
CDegreeSubSup.prototype.kind      = MATH_DEGREESubSup;
CDegreeSubSup.prototype.init = function(props)
{
    this.Fill_LogicalContent(3, props.content);

    this.setProperties(props);
    this.fillContent();
};
CDegreeSubSup.prototype.fillContent = function()
{
    if(this.Pr.type == DEGREE_SubSup)
    {
        this.bCanBreak       = true;
        this.NumBreakContent = 0;
    }
    else
    {
        this.bCanBreak       = false;
    }

     this.baseContent = this.Content[0];
     this.iters = new CIterators(this.Content[1], this.Content[2]);

    CDegreeSubSupBase.prototype.fillContent.call(this);
};
CDegreeSubSup.prototype.Recalculate_LineMetrics = function(PRS, ParaPr, _CurLine, _CurRange, ContentMetrics)
{
    var CurLine = _CurLine - this.StartLine;
    var CurRange = (0 === CurLine ? _CurRange - this.StartRange : _CurRange);

    if(PRS.bFastRecalculate === false)
    {
        this.Bounds.Reset(CurLine, CurRange);
    }

    if(this.bOneLine === false && true === this.Need_Iters(_CurLine, _CurRange))
    {
        // чтобы при вычислении метрик итератора не были перебили метрики (например, у внутр мат объекта Asc может быть больше Asc текущего объекта)

        var NewContentMetrics = new CMathBoundsMeasures();

        this.Content[1].Recalculate_LineMetrics(PRS, ParaPr, _CurLine, _CurRange, NewContentMetrics);
        this.Content[2].Recalculate_LineMetrics(PRS, ParaPr, _CurLine, _CurRange, NewContentMetrics);
        // основание, baseContent
        this.Content[0].Recalculate_LineMetrics(PRS, ParaPr, _CurLine, _CurRange, NewContentMetrics);

        var BoundBase = this.baseContent.Get_LineBound(_CurLine, _CurRange);

        var Bound = this.GetSize(g_oTextMeasurer, BoundBase);
        this.Bounds.UpdateMetrics(CurLine, CurRange, Bound);
        ContentMetrics.UpdateMetrics(Bound);

        this.iters.Recalculate_Reset( PRS.Range, PRS.Line, PRS );
        this.iters.Bounds.Reset(0, 0);
        this.iters.Bounds.UpdateMetrics(0, 0, this.iters.size);

        this.UpdatePRS(PRS, Bound);
    }
    else
    {
        CDegreeSubSupBase.prototype.Recalculate_LineMetrics.call(this, PRS, ParaPr, _CurLine, _CurRange, ContentMetrics);
    }

};
CDegreeSubSup.prototype.Recalculate_Range = function(PRS, ParaPr, Depth)
{
    this.bOneLine = this.bCanBreak == false || PRS.bMath_OneLine == true;

    if(this.bOneLine === true)
    {
        CDegreeSubSupBase.prototype.Recalculate_Range.call(this, PRS, ParaPr, Depth);
    }
    else
    {
        var CurLine  = PRS.Line - this.StartLine;
        var CurRange = ( 0 === CurLine ? PRS.Range - this.StartRange : PRS.Range );

        var bContainCompareOper = PRS.bContainCompareOper;

        var iterUp = this.iters.iterUp,
            iterDn = this.iters.iterDn;

        this.setDistance();

        var RangeStartPos = this.protected_AddRange(CurLine, CurRange),
            RangeEndPos = 0;

        if(CurLine == 0 && CurRange == 0)
        {
            PRS.WordLen += this.BrGapLeft;
            this.baseContent.Recalculate_Reset(PRS.Range, PRS.Line, PRS);
        }

        PRS.Update_CurPos(0, Depth);
        PRS.bMath_OneLine  = false;


        if(this.Pr.type == DEGREE_SubSup) // baseContent, iters
            this.baseContent.Recalculate_Range(PRS, ParaPr, Depth+1);

        var bNeedUpdateIter = (this.Pr.type == DEGREE_SubSup && PRS.NewRange == false) || (CurLine == 0 && CurRange == 0 && this.Pr.type == DEGREE_PreSubSup);

        if(bNeedUpdateIter)
        {
            var PRS_Pos = PRS.CurPos.Copy();

            PRS.bMath_OneLine = true;

            var WordLen = PRS.WordLen;

            this.iters.Recalculate_Range(PRS, ParaPr, Depth);

            var itersW = iterUp.size.width > iterDn.size.width ? iterUp.size.width : iterDn.size.width;

            PRS.CurPos.Set(PRS_Pos);
            PRS.WordLen = WordLen + itersW + this.dW;
            PRS.Word = true;
        }

        PRS.bMath_OneLine  = false;

        if(this.Pr.type == DEGREE_PreSubSup) // iters, baseContent
            this.baseContent.Recalculate_Range(PRS, ParaPr, Depth+1);

        if(PRS.NewRange == false)
            PRS.WordLen += this.BrGapRight;

        this.protected_FillRange(CurLine, CurRange, RangeStartPos, RangeEndPos);

        PRS.bContainCompareOper = bContainCompareOper;
    }
};
CDegreeSubSup.prototype.Recalculate_Range_Width = function(PRSC, _CurLine, _CurRange)
{
    if(this.bOneLine == true)
    {
        CDegreeSubSupBase.prototype.Recalculate_Range_Width.call(this, PRSC, _CurLine, _CurRange);
    }
    else
    {
        var CurLine = _CurLine - this.StartLine;
        var CurRange = ( 0 === CurLine ? _CurRange - this.StartRange : _CurRange );

        var RangeW = PRSC.Range.W;

        if(CurLine == 0 && CurRange == 0)
        {
            PRSC.Range.W += this.BrGapLeft;
        }

        if(this.Pr.type == DEGREE_SubSup) // baseContent, iters
            this.baseContent.Recalculate_Range_Width(PRSC, _CurLine, _CurRange);

        if(this.Need_Iters(_CurLine, _CurRange))
        {
            var RangeW2 = PRSC.Range.W;

            this.iters.iterUp.Recalculate_Range_Width(PRSC, _CurLine, _CurRange);
            this.iters.iterDn.Recalculate_Range_Width(PRSC, _CurLine, _CurRange);

            this.iters.Bounds.SetWidth(0, 0, this.iters.size.width);

            PRSC.Range.W = RangeW2 + this.iters.size.width + this.dW;
        }

        if(this.Pr.type == DEGREE_PreSubSup) // iters, baseContent
            this.baseContent.Recalculate_Range_Width(PRSC, _CurLine, _CurRange);

        if(this.baseContent.Math_Is_End(_CurLine, _CurRange))
        {
            PRSC.Range.W += this.BrGapRight;
        }

        this.Bounds.SetWidth(CurLine, CurRange, PRSC.Range.W - RangeW);
    }
};
CDegreeSubSup.prototype.setPosition = function(pos, PosInfo)
{
    if(this.bOneLine)
    {
        CDegreeSubSupBase.prototype.setPosition.call(this, pos, PosInfo);
    }
    else
    {
        var Line  = PosInfo.CurLine,
            Range = PosInfo.CurRange;
        var CurLine  = Line - this.StartLine;
        var CurRange = ( 0 === CurLine ? Range - this.StartRange : Range );

        this.UpdatePosBound(pos, PosInfo);

        if(CurLine == 0 && CurRange == 0)
        {
            pos.x += this.BrGapLeft;
        }

        var PosIters = new CMathPosition();
        if(this.Pr.type == DEGREE_SubSup)
        {
            this.baseContent.setPosition(pos, PosInfo);

            if(this.baseContent.Math_Is_End(Line, Range))
            {
                PosIters.x = pos.x;
                PosIters.y = pos.y - this.iters.size.ascent;

                this.iters.setPosition(PosIters, PosInfo);

                pos.x += this.iters.size.width + this.dW + this.BrGapRight;
            }
        }
        else
        {
            if(CurLine == 0 && CurRange == 0)
            {
                PosIters.x = pos.x;
                PosIters.y = pos.y - this.iters.size.ascent;

                this.iters.setPosition(PosIters, PosInfo);

                pos.x += this.iters.size.width + this.dW;

            }

            this.baseContent.setPosition(pos, PosInfo);

            if(this.baseContent.Math_Is_End(Line, Range))
                pos.x += this.BrGapRight;
        }
    }
};
CDegreeSubSup.prototype.Draw_Elements = function(PDSE)
{
    this.baseContent.Draw_Elements(PDSE);

    if(this.Need_Iters(PDSE.Line, PDSE.Range))
        this.iters.Draw_Elements(PDSE);
};
CDegreeSubSup.prototype.Need_Iters = function(_CurLine, _CurRange)
{
    var CurLine = _CurLine - this.StartLine;
    var CurRange = ( 0 === CurLine ? _CurRange - this.StartRange : _CurRange );

    return  (this.Pr.type == DEGREE_SubSup && this.baseContent.Math_Is_End(_CurLine, _CurRange)) || (CurLine == 0 && CurRange == 0 && this.Pr.type == DEGREE_PreSubSup);
};
CDegreeSubSup.prototype.protected_GetRangeEndPos = function(CurLine, CurRange)
{
    var _CurLine  = CurLine + this.StartLine;
    var _CurRange = ( 0 === CurLine ? CurRange + this.StartRange : CurRange );

    return this.Need_Iters(_CurLine, _CurRange) ? 2 : 0;
};
CDegreeSubSup.prototype.Apply_MenuProps = function(Props)
{
	if (Props.Type == Asc.c_oAscMathInterfaceType.Script)
	{
		if (Props.ScriptType == Asc.c_oAscMathInterfaceScript.PreSubSup && this.Pr.type == DEGREE_SubSup)
		{
			AscCommon.History.Add(new CChangesMathDegreeSubSupType(this, this.Pr.type, DEGREE_PreSubSup));
			this.raw_SetType(DEGREE_PreSubSup);
		}

		if (Props.ScriptType == Asc.c_oAscMathInterfaceScript.SubSup && this.Pr.type == DEGREE_PreSubSup)
		{
			AscCommon.History.Add(new CChangesMathDegreeSubSupType(this, this.Pr.type, DEGREE_SubSup));
			this.raw_SetType(DEGREE_SubSup);
		}
	}
};
CDegreeSubSup.prototype.raw_SetType = function(type)
{
    this.Pr.type = type;
    this.fillContent();
};
CDegreeSubSup.prototype.Get_InterfaceProps = function()
{
    var Type = this.Pr.type == DEGREE_PreSubSup ? Asc.c_oAscMathInterfaceScript.PreSubSup : Asc.c_oAscMathInterfaceScript.SubSup;
    return new CMathMenuScript(this, Type);
};
CDegreeSubSup.prototype.Can_ModifyArgSize = function()
{
    return this.CurPos !== 0 && false === this.Is_SelectInside(); // находимся в итераторе
};
CDegreeSubSup.prototype.GetTextOfElement = function(oMathText)
{
	oMathText = new AscMath.MathTextAndStyles(oMathText);

	let oBase					= this.getBase();
	let oLowerIterator			= this.getLowerIterator();
	let oUpperIterator			= this.getUpperIterator();
	let isPreScript				= this.Pr.type === -1;

	if (isPreScript)
	{
		let oPosLowerIterator	= oMathText.Add(oLowerIterator, true);
		let oPosUpperIterator	= oMathText.Add(oUpperIterator, true);
		let oPosBase			= oMathText.Add(oBase, true, false);

		if (oMathText.IsLaTeX())
		{
			oMathText.AddBefore(oPosLowerIterator,	new AscMath.MathText( "{_" , oBase));
			oMathText.AddAfter(oPosLowerIterator,	new AscMath.MathText( "^" , oBase));
			oMathText.AddAfter(oPosUpperIterator,	new AscMath.MathText( "}" , oBase));
		}
		else
		{
			oMathText.AddBefore(oPosLowerIterator,	new AscMath.MathText( "(_" , oBase));
			oMathText.AddAfter(oPosLowerIterator,	new AscMath.MathText( "^" , oBase));
			oMathText.AddAfter(oPosUpperIterator,	new AscMath.MathText( ")" , oBase));
		}
	}
	else
	{
		if (oMathText.IsLaTeX())
			oMathText.SetNotWrap();

		oMathText.Add(oBase, true, 1);
		oMathText.AddText(new AscMath.MathText("_", oLowerIterator));

		oMathText.SetGlobalStyle(oLowerIterator);
		oMathText.Add(oLowerIterator, true, oMathText.IsLaTeX() ? 1 : undefined);

		oMathText.AddText(new AscMath.MathText("^", oUpperIterator));

		oMathText.SetGlobalStyle(oUpperIterator);
		oMathText.Add(oUpperIterator, true, oMathText.IsLaTeX() ? 1 : undefined);
	}

	return oMathText;
};

/**
 *
 * @param CMathMenuScript
 * @constructor
 * @extends {CMathMenuBase}
 */
function CMathMenuScript(Script, Type)
{
	CMathMenuBase.call(this, Script);

    this.Type       = Asc.c_oAscMathInterfaceType.Script;

    if (undefined !== Type)
        this.ScriptType = Type;
    else
        this.ScriptType = undefined;
}
CMathMenuScript.prototype = Object.create(CMathMenuBase.prototype);
CMathMenuScript.prototype.constructor = CMathMenuScript;

CMathMenuScript.prototype.get_ScriptType = function(){return this.ScriptType;};
CMathMenuScript.prototype.put_ScriptType = function(Type){this.ScriptType = Type;};

//--------------------------------------------------------export----------------------------------------------------
window['AscCommonWord'] = window['AscCommonWord'] || {};
window['AscCommonWord'].CDegreeSubSup = CDegreeSubSup;
window['AscCommonWord'].CDegree = CDegree;

window["CMathMenuScript"] = CMathMenuScript;
CMathMenuScript.prototype["get_ScriptType"] = CMathMenuScript.prototype.get_ScriptType;
CMathMenuScript.prototype["put_ScriptType"] = CMathMenuScript.prototype.put_ScriptType;

AscMath.Degree = CDegree;
AscMath.DegreeSubSup = CDegreeSubSup;