/// <summary>
/// This code builds a list of columns and their corresponding filter textboxes
/// </summary>
/// <param name="dataGrid"></param>
/// <param name="centerCellStyle"></param>
/// <param name="keyUpEvent"></param>
/// <param name="txtSearchPanel"></param>
/// <param name="colVM"></param>
/// <param name="watermarkTextbox"></param>
internal void BuildDataGrid(DataGrid dataGrid,
IColumnsViewModel colVM,
Style centerCellStyle, Style watermarkTextbox,
KeyEventHandler keyUpEvent,
Panel txtSearchPanel)
{
if (dataGrid == null)
{
return;
}
// Remove available columns if there are any
dataGrid.Columns.Clear();
if (colVM.DataGridColumns != null)
{
// Create marker column and each filterable column
var markerCol = CreateMarkersColumn(dataGrid, txtSearchPanel);
BuildMarkerSearchPanel(txtSearchPanel, markerCol);
foreach (IColumnItem item in colVM.DataGridColumns)
{
DataGridTextColumn col = new DataGridTextColumn();
col.Header = item.Header;
// Bind column to visibility property via bool - visibility converter
var visiblityBinding = new Binding("IsColumnVisible");
visiblityBinding.Source = item;
visiblityBinding.Converter = _mBoolToVisConverter;
BindingOperations.SetBinding(col, DataGridColumn.VisibilityProperty, visiblityBinding);
if (item.Alignment == CellAlignment.CENTER && centerCellStyle != null)
{
col.CellStyle = centerCellStyle;
}
col.MinWidth = item.MinWidth;
col.Width = item.Width;
Binding bind = new Binding(item.Field)
{
Mode = BindingMode.OneWay
};
bind.ConverterCulture =
System.Globalization.CultureInfo.GetCultureInfo(Strings.Resources.CultureName);
if (!string.IsNullOrWhiteSpace(item.StringFormat))
{
bind.StringFormat = item.StringFormat;
}
col.Binding = bind;
// Add column to datagrid
dataGrid.Columns.Add(col);
BuildTextSearchPanel(keyUpEvent, txtSearchPanel, col, item, watermarkTextbox);
}
}
}
/// <summary>
/// Handle the case in which the user has entered a character into any of the filter columns -
/// update the corresponding filter column string in the viewmodel.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void HandleRefreshOnInputKeyInFilter(object sender, KeyEventArgs e)
{
var tb = sender as TextBox;
if (tb == null)
{
return;
}
IColumnsViewModel colVM = Columns;
if (colVM == null)
{
return;
}
IColumnItem col = colVM.DataGridColumns.FirstOrDefault(f => f.FilterControlName == tb.Name);
if (col == null)
{
return;
}
col.SetColumnFilterValue(tb.Text);
}
/// <summary>
/// Create columns and other items (text filter textbox headers) that bring the DataGrid to live.
/// </summary>
private void RebuildGrid()
{
IColumnsViewModel colVM = Columns;
Style centerCellStyle = CenterCellStyle;
Style watermarkTextbox = WaterMarkTextBox;
// Check the resource style for this class if any of these items is null
var partDataGrid = GetTemplateChild("PART_DataGrid") as DataGrid;
var partSearchPanel = GetTemplateChild("PART_SearchPanel") as Panel;
if (colVM != null && partDataGrid != null)
{
partDataGrid.EnableRowVirtualization = true;
_GridManager.BuildDataGrid(partDataGrid, colVM,
centerCellStyle, watermarkTextbox,
HandleRefreshOnInputKeyInFilter,
partSearchPanel);
////Not necessary since the ViewModel creates the CollectionView and looks after the filtering
////this.AssignSource(new Binding("LogEntryRowViewModels") { Source = this, Mode = BindingMode.OneWay });
}
}