private void TryExpandTree(TreeViewItem element)
{
var parents = VisualTreeAssist.GetParentsUntil <TreeViewItem, TreeView>(element).ToList();
parents.ForEach(p => p.IsExpanded = true);
element.BringIntoView();
}
/// <summary>
/// Converts a TreeListViewExpander in a TreeListViewItem level to the left distance
/// </summary>
/// <param name="value">The TreeListViewExpander value to convert</param>
/// <param name="targetType">This parameter is not used</param>
/// <param name="parameter">This parameter is not used</param>
/// <param name="culture">This parameter is not used</param>
/// <returns>The left distance for the given level</returns>
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value != null)
{
var container = VisualTreeAssist.FindParent <TreeListViewItem>(value);
return(container?.Level * 10);
}
return(null);
}
private static void CloseButton_Click(object sender, RoutedEventArgs e)
{
if (GetIsClose((DependencyObject)sender))
{
var button = sender as Button;
var window = VisualTreeAssist.FindParent <Window>(button);
if (window != null)
{
window.Close();
}
}
}
/// <summary>
/// Checks if the tree view item is a child item and can be collapsed and calculates the intending by the level.
/// </summary>
/// <param name="value">The tree view item container.</param>
/// <param name="targetType">This parameter is not used.</param>
/// <param name="parameter">This parameter is not used.</param>
/// <param name="culture">This parameter is not used.</param>
/// <returns></returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value != null)
{
var container = VisualTreeAssist.FindParent <TreeListViewItem>(value as DependencyObject);
if (container != null)
{
return(container.Level * 10);
}
}
return(null);
}
private static void Eement_Loaded(object sender, RoutedEventArgs e)
{
var element = (DependencyObject)sender;
var behavior = GetOrSetBehavior(element);
if (!behavior._isCatchedAlready)
{
var presenter = VisualTreeAssist.FindChild <GridViewHeaderRowPresenter>(element);
if (presenter != null)
{
behavior.Handle(element, presenter.Columns);
}
}
}
private void TryApplyStyle <T>(Style style) where T : FrameworkElement
{
if (style == null)
{
return;
}
var controls = VisualTreeAssist.GetChildren <T>(this);
foreach (var control in controls)
{
control.Style = style;
}
}
private void TryReadColumns()
{
var presenter = VisualTreeAssist.FindChild <GridViewHeaderRowPresenter>(_owner);
if (presenter != null)
{
_columns = presenter.Columns;
}
if (_columns != null)
{
SetOriginalWidths();
_columns.CollectionChanged += (a, b) => Reset();
}
}
private void GetColumns(DependencyObject sender)
{
var behavior = GetOrSetBehavior(sender);
var presenter = VisualTreeAssist.FindChild <GridViewHeaderRowPresenter>(_owner);
if (presenter != null)
{
_columns = presenter.Columns;
}
if (_columns != null)
{
foreach (var column in _columns)
{
column.HeaderTemplate = GetNeutralHeaderTemplate(sender);
}
}
}
private void RibbonLoaded(object sender, RoutedEventArgs e)
{
Ribbon ribbon = (Ribbon)sender;
var child = VisualTreeAssist.FindChild <Grid>(ribbon);// VisualTreeHelper.GetChild((DependencyObject)sender, 0) as Grid;
if (child != null)
{
child.RowDefinitions[0].Height = new GridLength(0, System.Windows.GridUnitType.Pixel);
child.RowDefinitions[1].Height = new GridLength(0, System.Windows.GridUnitType.Pixel);
}
var lines = VisualTreeAssist.GetChilds <Line>(ribbon);
if (lines != null)
{
foreach (Line line in lines)
{
line.Visibility = Visibility.Collapsed;
}
}
}
private static void DialogResultButton_Click(object sender, RoutedEventArgs e)
{
var button = sender as Button;
var window = VisualTreeAssist.FindParent <Window>(button);
if (window != null)
{
var resultCommand = GetDialogResultCommand(button);
if (resultCommand != null)
{
var args = new WindowClosingArgs();
resultCommand.Execute(args);
if (!args.Cancel)
{
window.DialogResult = args.DialogResult;
}
}
else
{
window.DialogResult = GetDialogResult(button);
}
}
}
private ScrollContentPresenter FindPresenter()
{
var internalScrollViewer = VisualTreeAssist.FindChild <ScrollViewer>(_owner);
return(VisualTreeAssist.FindChild <ScrollContentPresenter>(internalScrollViewer));
}
