/// <summary>
/// Gets the fist control in a visual tree.
/// </summary>
/// <param name="element">The current element.</param>
/// <returns>The first control in the tree.</returns>
private static Control GetFirstControl(UIElement element)
{
Control control = element as Control;
if (control != null)
{
return control;
}
Panel panel = element as Panel;
if (panel != null)
{
foreach (UIElement child in panel.Children)
{
Control childControl = LabeledContentControl.GetFirstControl(child);
if (childControl != null)
{
return childControl;
}
}
}
ContentPresenter contentPresenter = element as ContentPresenter;
if (contentPresenter != null)
{
UIElement contentElement = contentPresenter.Content as UIElement;
if (contentElement != null)
{
return LabeledContentControl.GetFirstControl(contentElement);
}
}
return null;
}
/// <summary>
/// Gives focus to the first control in the tree.
/// </summary>
/// <param name="sender">The label area element.</param>
/// <param name="e">Mouse Button Event Args.</param>
private void LabelAreaElement_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
UIElement content = this.Content as UIElement;
if (content != null)
{
Control control = LabeledContentControl.GetFirstControl(content);
if (control != null)
{
FocusHelper.FocusControl(control);
}
}
}
/// <summary>
/// Updates the labels.
/// </summary>
/// <param name="startLabel">The start labeledcontentcontrol.</param>
/// <param name="endLabel">The end labeledcontentcontrol.</param>
/// <param name="newLabel">New label text for the start labeledcontentcontrol.</param>
private static void UpdateLabels(LabeledContentControl startLabel, LabeledContentControl endLabel, string newLabel)
{
bool changeActualDateLabel = true;
if (endLabel.Visibility == Visibility.Visible)
{
DateTime endDate = DateTime.Parse(endLabel.Content.ToString(), CultureInfo.CurrentCulture);
DateTime startDate = DateTime.Parse(startLabel.Content.ToString(), CultureInfo.CurrentCulture);
if (!endDate.Equals(startDate))
{
changeActualDateLabel = false;
}
}
if (changeActualDateLabel && startLabel.Visibility == Visibility.Visible)
{
startLabel.Label = newLabel;
}
}
