/// <summary>
/// Method which returns a default control for column header drag indicator
/// </summary>
private Control CreateColumnHeaderDragIndicator()
{
Debug.Assert(_draggingSrcColumnHeader != null, "Dragging header is null");
DataGridColumnFloatingHeader floatingHeader = new DataGridColumnFloatingHeader();
floatingHeader.ReferenceHeader = _draggingSrcColumnHeader;
return(floatingHeader);
}
// Token: 0x06005D11 RID: 23825 RVA: 0x001A305C File Offset: 0x001A125C
private void FinishColumnHeaderDrag(bool isCancel)
{
this._prepareColumnHeaderDragging = false;
this._isColumnHeaderDragging = false;
this._draggingSrcColumnHeader.SuppressClickEvent = false;
if (this._columnHeaderDragIndicator != null)
{
this._columnHeaderDragIndicator.Visibility = Visibility.Collapsed;
DataGridColumnFloatingHeader dataGridColumnFloatingHeader = this._columnHeaderDragIndicator as DataGridColumnFloatingHeader;
if (dataGridColumnFloatingHeader != null)
{
dataGridColumnFloatingHeader.ClearHeader();
}
base.RemoveVisualChild(this._columnHeaderDragIndicator);
}
if (this._columnHeaderDropLocationIndicator != null)
{
this._columnHeaderDropLocationIndicator.Visibility = Visibility.Collapsed;
DataGridColumnDropSeparator dataGridColumnDropSeparator = this._columnHeaderDropLocationIndicator as DataGridColumnDropSeparator;
if (dataGridColumnDropSeparator != null)
{
dataGridColumnDropSeparator.ReferenceHeader = null;
}
base.RemoveVisualChild(this._columnHeaderDropLocationIndicator);
}
DragCompletedEventArgs e = new DragCompletedEventArgs(this._columnHeaderDragCurrentPosition.X - this._columnHeaderDragStartPosition.X, this._columnHeaderDragCurrentPosition.Y - this._columnHeaderDragStartPosition.Y, isCancel);
this.ParentDataGrid.OnColumnHeaderDragCompleted(e);
this._draggingSrcColumnHeader.InvalidateArrange();
if (!isCancel)
{
int num = -1;
bool flag = this.IsMousePositionValidForColumnDrag(2.0, out num);
DataGridColumn column = this._draggingSrcColumnHeader.Column;
if (column != null && flag && num != column.DisplayIndex)
{
column.DisplayIndex = num;
DataGridColumnEventArgs e2 = new DataGridColumnEventArgs(this._draggingSrcColumnHeader.Column);
this.ParentDataGrid.OnColumnReordered(e2);
}
}
this._draggingSrcColumnHeader = null;
this._columnHeaderDragIndicator = null;
this._columnHeaderDropLocationIndicator = null;
}
/// <summary>
/// Method which completes the column header drag. Includes raising of events and changing column display index if needed.
/// </summary>
private void FinishColumnHeaderDrag(bool isCancel)
{
Debug.Assert(ParentDataGrid != null, "ParentDataGrid is null");
_prepareColumnHeaderDragging = false;
_isColumnHeaderDragging = false;
_draggingSrcColumnHeader.SuppressClickEvent = false;
if (_columnHeaderDragIndicator != null)
{
_columnHeaderDragIndicator.Visibility = Visibility.Collapsed;
DataGridColumnFloatingHeader floatingHeader = _columnHeaderDragIndicator as DataGridColumnFloatingHeader;
if (floatingHeader != null)
{
floatingHeader.ClearHeader();
}
RemoveVisualChild(_columnHeaderDragIndicator);
}
if (_columnHeaderDropLocationIndicator != null)
{
_columnHeaderDropLocationIndicator.Visibility = Visibility.Collapsed;
DataGridColumnDropSeparator separator = _columnHeaderDropLocationIndicator as DataGridColumnDropSeparator;
if (separator != null)
{
separator.ReferenceHeader = null;
}
RemoveVisualChild(_columnHeaderDropLocationIndicator);
}
DragCompletedEventArgs dragCompletedEventArgs = new DragCompletedEventArgs(
_columnHeaderDragCurrentPosition.X - _columnHeaderDragStartPosition.X,
_columnHeaderDragCurrentPosition.Y - _columnHeaderDragStartPosition.Y,
isCancel);
ParentDataGrid.OnColumnHeaderDragCompleted(dragCompletedEventArgs);
_draggingSrcColumnHeader.InvalidateArrange();
if (!isCancel)
{
int newDisplayIndex = -1;
bool dragEndPositionValid = IsMousePositionValidForColumnDrag(
2.0,
out newDisplayIndex);
DataGridColumn column = _draggingSrcColumnHeader.Column;
if (column != null && dragEndPositionValid && newDisplayIndex != column.DisplayIndex)
{
column.DisplayIndex = newDisplayIndex;
DataGridColumnEventArgs columnEventArgs = new DataGridColumnEventArgs(_draggingSrcColumnHeader.Column);
ParentDataGrid.OnColumnReordered(columnEventArgs);
}
}
_draggingSrcColumnHeader = null;
_columnHeaderDragIndicator = null;
_columnHeaderDropLocationIndicator = null;
}
