void CreateCellContent(DataGrid grid, DataGridPanel panel, Border bdr, CellRange rng)
{
// get row and column
var r = panel.Rows[rng.Row];
var c = panel.Columns[rng.Column];
//var gr = r as GroupRow;
// honor user templates (if the row has a backing data item)
if (r.DataItem != null && c.CellTemplate != null && panel.CellType == CellType.Cell)
{
bdr.Padding = GetTemplatePadding(bdr.Padding);
bdr.Child = GetTemplatedCell(grid, c.CellTemplate);
return;
}
// get binding, unbound value for the cell
var b = r.DataItem != null ? c.Binding : null;
var ubVal = r.DataItem != null ? null : panel[rng.Row, rng.Column];
// get foreground brush taking selected state into account
var fore = GetForegroundBrush(grid, r, rng, grid.Foreground);
// handle non-text types
var type = c.DataType;
TextBlock tb = null;
CheckBox chk = null;
if ( // not a group, or hierarchical
panel.CellType == CellType.Cell &&
(type == typeof(bool) || type == typeof(bool?))) // and bool
{
// Boolean cells: use CheckBox
chk = new CheckBox();
chk.IsThreeState = type == typeof(bool?);
chk.HorizontalAlignment = HorizontalAlignment.Center;
chk.VerticalAlignment = VerticalAlignment.Center;
chk.MinWidth = 32;
chk.HorizontalAlignment = HorizontalAlignment.Stretch;
chk.VerticalAlignment = VerticalAlignment.Stretch;
chk.Margin = new Thickness(0, -10, 0, -10);
chk.IsHitTestVisible = false;
chk.IsTabStop = false;
if (fore != null)
{
chk.Foreground = fore;
}
bdr.Child = chk;
if (b != null)
{
chk.SetBinding(CheckBox.IsCheckedProperty, b);
}
else
{
var value = ubVal as bool?;
chk.IsChecked = value;
}
}
else
{
// use TextBlock for everything else (even empty cells)
tb = new TextBlock();
tb.VerticalAlignment = VerticalAlignment.Center;
if (fore != null)
{
tb.Foreground = fore;
}
bdr.Child = tb;
// bound values
if (b != null)
{
// apply binding
tb.SetBinding(TextBlock.TextProperty, b);
}
else if (ubVal != null) // unbound values
{
// get column format from column and/or binding
tb.Text = r.GetDataFormatted(c);
}
}
}
public virtual bool IsSortSymbolRow(DataGrid grid, CellRange rng)
{
return(rng.BottomRow == grid.ColumnHeaders.Rows.Count - 1);
}
public virtual void CreateCellContent(DataGrid grid, Border bdr, CellRange rng)
{
CreateCellContent(grid, grid.Cells, bdr, rng);
}
public virtual void CreateColumnHeaderContent(DataGrid grid, Border bdr, CellRange rng)
{
var c = grid.Columns[rng.Column];
if (c.HeaderObject != null)
{
var tb = new ContentPresenter();
tb.VerticalContentAlignment = VerticalAlignment.Center;
tb.Content = c.HeaderObject;
bdr.Child = tb;
// apply global foreground color
if (grid.ColumnHeaderForeground != null)
{
tb.Foreground = grid.ColumnHeaderForeground;
}
if (c.HeaderForeground != null)
{
tb.Foreground = c.HeaderForeground;
}
tb.HorizontalAlignment = c.HeaderHorizontalAlignment;
// show sort direction (after applying styles)
if (grid.ShowSort && IsSortSymbolRow(grid, rng))
{
// get the grid that owns the row (we could be printing this)
var g = grid.Columns.Count > 0 ? grid.Columns[0].Grid : grid;
// get sort direction and show it
ListSortDirection?sd = g.GetColumnSort(rng.Column);
if (sd.HasValue)
{
var icon = GetGlyphSort(sd.Value, tb.Foreground);
SetBorderContent(bdr, bdr.Child, icon, 1);
}
}
}
else
{
// create TextBlock content
var tb = new TextBlock();
tb.VerticalAlignment = VerticalAlignment.Center;
bdr.Child = tb;
// get unbound value
var value = grid.ColumnHeaders[rng.Row, rng.Column];
if (value != null)
{
tb.Text = value.ToString();
}
// no unbound value? show column caption on first fixed row
if (string.IsNullOrEmpty(tb.Text) && rng.Row == 0)
{
tb.Text = grid.Columns[rng.Column].GetHeader() ?? "";
}
// apply global foreground color
if (grid.ColumnHeaderForeground != null)
{
tb.Foreground = grid.ColumnHeaderForeground;
}
// honor HeaderTemplate property
if (c.HeaderTemplate != null)
{
bdr.Padding = GetTemplatePadding(bdr.Padding); // Util.ThicknessEmpty;
bdr.Child = GetTemplatedCell(grid, c.HeaderTemplate);
//bdr.Child = c.HeaderTemplate.LoadContent() as UIElement;
}
if (c.HeaderForeground != null)
{
tb.Foreground = c.HeaderForeground;
}
tb.HorizontalAlignment = c.HeaderHorizontalAlignment;
// show sort direction (after applying styles)
if (grid.ShowSort && IsSortSymbolRow(grid, rng))
{
// get the grid that owns the row (we could be printing this)
var g = grid.Columns.Count > 0 ? grid.Columns[0].Grid : grid;
// get sort direction and show it
ListSortDirection?sd = g.GetColumnSort(rng.Column);
if (sd.HasValue)
{
var icon = GetGlyphSort(sd.Value, tb.Foreground);
SetBorderContent(bdr, bdr.Child, icon, 1);
}
}
}
}
public virtual Thickness GetCellPadding(DataGrid grid, DataGridPanel panel, CellRange rng)
{
var p = _padding;
return(p);
}
