Сделано, чтобы можно было получать и выставлять ширины ячеек.

word/Editor/Table.js

@@ -288,6 +288,7 @@ CTable.prototype =
             var Border_insideV = null;
 
             var CellShd   = null;
+            var CellWidth = undefined;
 
             var Prev_row = -1;
             var bFirstRow = true;
@@ -304,6 +305,7 @@ CTable.prototype =
                 var Cell_borders = Cell.Get_Borders();
                 var Cell_margins = Cell.Get_Margins();
                 var Cell_shd     = Cell.Get_Shd();
+                var Cell_w       = Cell.Get_W();
 
                 if ( 0 === Index )
                 {
@@ -333,6 +335,22 @@ CTable.prototype =
                         CellShd = null;
                 }
 
+                if (0 === Index)
+                {
+                    if (tblwidth_Auto === Cell_w.Type)
+                        CellWidth = null;
+                    else if (tblwidth_Mm === Cell_w.Type)
+                        CellWidth = Cell_w.W;
+                    else// if (tblwidth_Pct === Cell_w.Type)
+                        CellWidth = -Cell_w.W;
+                }
+                else
+                {
+                    if ((tblwidth_Auto === Cell_w.Type && null !== CellWidth)
+                        || (undefined === CellWidth || null === CellWidth || Math.abs(CellWidth - Cell_w.W) > 0.001))
+                        CellWidth = undefined;
+                }
+
                 // Крайняя левая ли данная ячейка в выделении?
                 if ( 0 === Index || this.Selection.Data[Index - 1].Row != Pos.Row )
                 {
@@ -442,6 +460,7 @@ CTable.prototype =
             Pr.CellsVAlign        = VAlign;
             Pr.CellsTextDirection = TextDirection;
             Pr.CellsNoWrap        = NoWrap;
+            Pr.CellsWidth         = CellWidth;
 
             Pr.CellBorders =
             {
@@ -489,6 +508,7 @@ CTable.prototype =
             var CellMargins = Cell.Get_Margins();
             var CellBorders = Cell.Get_Borders();
             var CellShd     = Cell.Get_Shd();
+            var CellW       = Cell.Get_W();
 
             if ( true === Cell.Is_TableMargins() )
             {
@@ -515,6 +535,12 @@ CTable.prototype =
 
             Pr.CellsBackground = CellShd.Copy();
 
+            if (tblwidth_Auto === CellW.Type)
+                Pr.CellsWidth = null;
+            else if (tblwidth_Mm === CellW.Type)
+                Pr.CellsWidth = CellW.W;
+            else// if (tblwidth_Pct === CellW.Type)
+                Pr.CellsWidth = -CellW.W;
 
             var Spacing = this.Content[0].Get_CellSpacing();
             if ( null === Spacing )
@@ -1935,6 +1961,36 @@ CTable.prototype =
             }
         }
 
+        // CellsWidth
+        if (undefined !== Props.CellsWidth)
+        {
+            if (this.Selection.Use === true && table_Selection_Cell === this.Selection.Type)
+            {
+                var Count = this.Selection.Data.length;
+                for (var Index = 0; Index < Count; ++Index)
+                {
+                    var Pos  = this.Selection.Data[Index];
+                    var Cell = this.Content[Pos.Row].Get_Cell(Pos.Cell);
+
+                    if (null === Props.CellsWidth)
+                        Cell.Set_W(new CTableMeasurement(tblwidth_Auto, 0));
+                    else if (Props.CellsWidth > -0.001)
+                        Cell.Set_W(new CTableMeasurement(tblwidth_Mm, Props.CellsWidth));
+                    else
+                        Cell.Set_W(new CTableMeasurement(tblwidth_Pct, Math.abs(Props.CellsWidth)));
+                }
+            }
+            else
+            {
+                if (null === Props.CellsWidth)
+                    this.CurCell.Set_W(new CTableMeasurement(tblwidth_Auto, 0));
+                else if (Props.CellsWidth > -0.001)
+                    this.CurCell.Set_W(new CTableMeasurement(tblwidth_Mm, Props.CellsWidth));
+                else
+                    this.CurCell.Set_W(new CTableMeasurement(tblwidth_Pct, Math.abs(Props.CellsWidth)));
+            }
+        }
+
         return true;
     },
 

word/api.js

-/*
+/*
  *
  * (c) Copyright Ascensio System Limited 2010-2016
  *
@@ -4139,6 +4139,7 @@ function CTableProp (tblProp)
         this.TableLayout        = tblProp.TableLayout;
         this.CellsTextDirection = tblProp.CellsTextDirection;
         this.CellsNoWrap        = tblProp.CellsNoWrap;
+        this.CellsWidth         = tblProp.CellsWidth;
         this.Locked             = (undefined != tblProp.Locked) ? tblProp.Locked : false;
     }
 	else
@@ -4223,6 +4224,9 @@ CTableProp.prototype.get_CellsTextDirection = function(){return this.CellsTextDi
 CTableProp.prototype.put_CellsTextDirection = function(v){this.CellsTextDirection = v;};
 CTableProp.prototype.get_CellsNoWrap = function(){return this.CellsNoWrap;};
 CTableProp.prototype.put_CellsNoWrap = function(v){this.CellsNoWrap = v;};
+CTableProp.prototype.get_CellsWidth = function (){return this.CellsWidth;};
+CTableProp.prototype.put_CellsWidth = function (v){this.CellsWidth = v;};
+
 
 function CBorders (obj)
 {

word/apiExport.js

@@ -685,6 +685,8 @@ CTableProp.prototype['get_CellsTextDirection'] = CTableProp.prototype.get_CellsT
 CTableProp.prototype['put_CellsTextDirection'] = CTableProp.prototype.put_CellsTextDirection;
 CTableProp.prototype['get_CellsNoWrap']        = CTableProp.prototype.get_CellsNoWrap;
 CTableProp.prototype['put_CellsNoWrap']        = CTableProp.prototype.put_CellsNoWrap;
+CTableProp.prototype['get_CellsWidth']         = CTableProp.prototype.get_CellsWidth;
+CTableProp.prototype['put_CellsWidth']         = CTableProp.prototype.put_CellsWidth;
 
 window['CBorders'] = CBorders;
 CBorders.prototype['get_Left'] = CBorders.prototype.get_Left;