/// <summary>
/// Saves undo information.
/// </summary>
public void SaveState()
{
double[] numArray = null;
bool[] flagArray = null;
if (((_sheet != null) && (_columns != null)) && (_columns.Length > 0))
{
numArray = new double[_columns.Length];
flagArray = new bool[_columns.Length];
int num = _rowHeader ? _sheet.RowHeader.ColumnCount : _sheet.ColumnCount;
for (int i = 0; i < _columns.Length; i++)
{
ColumnAutoFitExtent extent = _columns[i];
if ((0 <= extent.Column) && (extent.Column < num))
{
if (_rowHeader)
{
numArray[i] = _sheet.GetColumnWidth(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader);
flagArray[i] = _sheet.GetColumnVisible(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader);
}
else
{
numArray[i] = _sheet.GetColumnWidth(extent.Column, SheetArea.Cells);
flagArray[i] = _sheet.GetColumnVisible(extent.Column, SheetArea.Cells);
}
}
else
{
numArray[i] = -1.0;
flagArray[i] = false;
}
}
}
_oldSizes = numArray;
_oldVisibles = flagArray;
}
/// <summary>
/// Undoes the column automatic fit action.
/// </summary>
/// <param name="sender">Object on which the action occurred.</param>
/// <returns><c>true</c> if successful; otherwise <c>false</c>.</returns>
public bool Undo(object sender)
{
bool flag = false;
if (((_sheet != null) && (_columns != null)) && (_columns.Length > 0))
{
Excel excel = sender as Excel;
int[] columnsReiszed = GetColumnsReiszed(_columns);
base.SuspendInvalidate(sender);
try
{
if ((excel != null) && excel.RaiseColumnWidthChanging(columnsReiszed, _rowHeader))
{
return(true);
}
int num2 = _rowHeader ? _sheet.RowHeader.ColumnCount : _sheet.ColumnCount;
for (int i = 0; i < _columns.Length; i++)
{
ColumnAutoFitExtent extent = _columns[i];
double width = _oldSizes[i];
bool flag3 = _oldVisibles[i];
if (((0 <= i) && (i < num2)) && (width != -1.0))
{
if (_rowHeader && _sheet.GetColumnResizable(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader))
{
_sheet.SetColumnWidth(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader, width);
_sheet.SetColumnVisible(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader, flag3);
flag = true;
}
else if (_sheet.GetColumnResizable(extent.Column, SheetArea.Cells))
{
_sheet.SetColumnWidth(extent.Column, SheetArea.Cells, width);
_sheet.SetColumnVisible(extent.Column, SheetArea.Cells, flag3);
flag = true;
}
}
}
}
finally
{
base.ResumeInvalidate(sender);
}
if (excel != null)
{
excel.InvalidateLayout();
excel.InvalidateViewportHorizontalArrangement(-2);
excel.InvalidateHeaderHorizontalArrangement();
excel.InvalidateMeasure();
excel.RefreshRange(-1, -1, -1, -1, SheetArea.Cells | SheetArea.ColumnHeader);
excel.RaiseColumnWidthChanged(columnsReiszed, _rowHeader);
}
}
return(flag);
}
/// <summary>
/// Performs the column automatic fit action.
/// </summary>
/// <param name="sender">Object on which the action occurred.</param>
public override void Execute(object sender)
{
if (CanExecute(sender))
{
Excel excel = sender as Excel;
int[] columnsReiszed = GetColumnsReiszed(_columns);
base.SuspendInvalidate(sender);
try
{
if ((excel != null) && excel.RaiseColumnWidthChanging(columnsReiszed, _rowHeader))
{
return;
}
SaveState();
int num = _rowHeader ? _sheet.RowHeader.ColumnCount : _sheet.ColumnCount;
for (int i = 0; i < _columns.Length; i++)
{
ColumnAutoFitExtent extent = _columns[i];
if ((0 <= extent.Column) && (extent.Column < num))
{
if (_rowHeader && _sheet.GetColumnResizable(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader))
{
double width = Math.Ceiling(excel.GetColumnAutoFitValue(extent.Column, true));
if (width >= 0.0)
{
width = (width + 1.0) + 4.0;
}
if (width != _sheet.GetColumnWidth(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader))
{
_sheet.SetColumnWidth(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader, width);
}
_sheet.SetColumnVisible(extent.Column, SheetArea.CornerHeader | SheetArea.RowHeader, true);
}
else if (_sheet.GetColumnResizable(extent.Column, SheetArea.Cells))
{
double num4 = Math.Ceiling(excel.GetColumnAutoFitValue(extent.Column, false));
if (num4 >= 0.0)
{
num4 = (num4 + 1.0) + 4.0;
}
if (num4 != _sheet.GetColumnWidth(extent.Column, SheetArea.Cells))
{
_sheet.SetColumnWidth(extent.Column, SheetArea.Cells, num4);
}
_sheet.SetColumnVisible(extent.Column, SheetArea.Cells, true);
}
}
}
}
finally
{
base.ResumeInvalidate(sender);
}
if (excel != null)
{
excel.InvalidateLayout();
excel.InvalidateViewportHorizontalArrangement(-2);
excel.InvalidateHeaderHorizontalArrangement();
excel.InvalidateMeasure();
excel.RefreshRange(-1, -1, -1, -1, SheetArea.Cells | SheetArea.ColumnHeader);
excel.RefreshFloatingObjects();
excel.RaiseColumnWidthChanged(columnsReiszed, _rowHeader);
}
}
}
