public static object FindStyleValue(object value, string propertyName, DependencyProperty defaultStyleDP, DependencyProperty columnStyleDP)
{
object _result = null;
Style _defaultStyle = null;
Style _columnStyle = null;
GridViewColumnHeader _header = null;
DsxColumn _column = null;
if (value is DsxDataGrid)
{
_defaultStyle = (Style)((DsxDataGrid)value).GetValue(defaultStyleDP);
}
else if (value is GridViewColumnHeader)
{
_header = (GridViewColumnHeader)value;
_column = (DsxColumn)_header.Column;
}
else
{
_column = (DsxColumn)value;
}
if (_column != null)
{
_defaultStyle = (Style)_column.DataGrid.GetValue(defaultStyleDP);
_columnStyle = (Style)_column.GetValue(columnStyleDP);
}
else if (_defaultStyle == null)
{
// remind: padding empty columns have no column assigned in the GridViewColumnHeader
DsxDataGrid _dataGrid = ElementHelper.FindLogicalParent <DsxDataGrid>(_header);
if (_dataGrid != null)
{
_defaultStyle = (Style)_dataGrid.GetValue(defaultStyleDP);
}
}
// apply current (column) Style
// fall back to default Style
_result = _columnStyle.GetStylePropertyValue <object>(propertyName, _defaultStyle, null);
return(_result);
}
internal void UpdateRowArea(GridViewRowPresenter gridPresenter)
{
if (gridPresenter == null)
{
// happens due to virutalization
return;
}
ContentPresenter _cellContent = null;
FrameworkElement _cellElement = null;
for (int i = 0; i < gridPresenter.Columns.Count; i++)
{
_cellContent = VisualTreeHelper.GetChild(gridPresenter, i) as ContentPresenter;
_cellElement = ElementHelper.FindVisualChild <FrameworkElement>(_cellContent);
if (_cellElement != null)
{
_cellElement.InvalidateMeasure();
_cellElement.InvalidateArrange();
_cellElement.UpdateLayout();
}
}
}
void OnPreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (this.Column == null)
{
return;
}
if (this.Column.ViewType == EViewType.CheckBox)
{
e.Handled = true;
return;
}
if (this.Column.EditType == EEditType.CellTemplate && this.IsEditMode)
{
e.Handled = false;
return;
}
if (this.Column.CellContentIsClickable)
{
// let the click trough on the first button found
Button _button = ElementHelper.FindVisualChild <Button>(this);
if (_button != null)
{
Point _point = e.GetPosition((UIElement)sender);
HitTestResult _hitResult = VisualTreeHelper.HitTest(this, _point);
if (_hitResult != null)
{
Visual _hitElement = ElementHelper.FindVisualChild <Visual>(_button);
e.Handled = !(_hitElement == _hitResult.VisualHit);
}
// this way we could raise the button click event
//_button.RaiseEvent( new RoutedEventArgs(Button.ClickEvent));
//ButtonAutomationPeer _peerButton = new ButtonAutomationPeer(_button);
//IInvokeProvider _invokeProv = _peerButton.GetPattern(PatternInterface.Invoke) as IInvokeProvider;
// _invokeProv.Invoke();
}
}
else
{
e.Handled = true;
if (this.Column.IsEditable)
{
long _ticksPassed = DateTime.Now.Ticks - m_lastTicks;
if (_ticksPassed < 50000000)
{
m_lastTicks = 0;
this.Column.DataGrid.SetEditCell(this.Column, (FrameworkElement)this);
return;
}
}
m_lastTicks = DateTime.Now.Ticks;
}
}