private static object GetDataFromListBox(ListBox source, Point point)
{
UIElement element = source.InputHitTest(point) as UIElement;
if (element != null)
{
object data = DependencyProperty.UnsetValue;
while (data == DependencyProperty.UnsetValue)
{
data = source.ItemContainerGenerator.ItemFromContainer(element);
if (data == DependencyProperty.UnsetValue)
{
element = VisualTreeHelper.GetParent(element) as UIElement;
}
if (element == source)
{
return null;
}
}
if (data != DependencyProperty.UnsetValue)
{
return data;
}
}
return null;
}
private static object GetObjectDataFromPoint(ListBox source, Point point)
{
UIElement element = source.InputHitTest(point) as UIElement;
if (element != null)
{
//get the object from the element
object data = DependencyProperty.UnsetValue;
while (data == DependencyProperty.UnsetValue)
{
// try to get the object value for the corresponding element
data = source.ItemContainerGenerator.ItemFromContainer(element);
//get the parent and we will iterate again
if (data == DependencyProperty.UnsetValue)
element = VisualTreeHelper.GetParent(element) as UIElement;
//if we reach the actual listbox then we must break to avoid an infinite loop
if (element == source)
return null;
}
//return the data that we fetched only if it is not Unset value,
//which would mean that we did not find the data
if (data != DependencyProperty.UnsetValue)
return data;
}
return null;
}
private static object GetObjectDataFromPoint(ListBox source, Point point, out UIElement dataContainer)
{
dataContainer = (UIElement) null;
UIElement uiElement = source.InputHitTest(point) as UIElement;
if (uiElement != null)
{
object obj = DependencyProperty.UnsetValue;
while (obj == DependencyProperty.UnsetValue && obj != null)
{
if (source.ItemContainerGenerator == null)
return (object) null;
obj = source.ItemContainerGenerator.ItemFromContainer((DependencyObject) uiElement);
if (obj == DependencyProperty.UnsetValue || obj == null)
uiElement = VisualTreeHelper.GetParent((DependencyObject) uiElement) as UIElement;
if (uiElement == source)
return (object) null;
}
if (obj != DependencyProperty.UnsetValue)
{
dataContainer = uiElement;
return obj;
}
}
return (object) null;
}
private Boolean IsLyrics(ListBox source, MouseButtonEventArgs e)
{
UIElement element = source.InputHitTest(e.GetPosition(source)) as UIElement;
while (element != null && element != source)
{
if (element is AudioItem.AudioItemLyricsView) return true;
element = VisualTreeHelper.GetParent(element) as UIElement;
}
return false;
}
private object getElementFromPoint(ListBox listbox, Point point)
{
UIElement element = (UIElement)listbox.InputHitTest(point);
while (true)
{
if (element == listbox) return null;
object item = listbox.ItemContainerGenerator.ItemFromContainer(element);
bool itemFound = !(item.Equals(DependencyProperty.UnsetValue));
if (itemFound) return item;
element = (UIElement)VisualTreeHelper.GetParent(element);
}
}
/// <summary>
/// The get object data from point.
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <param name="point">
/// The point.
/// </param>
/// <returns>
/// The get object data from point.
/// </returns>
private static string GetObjectDataFromPoint(ListBox source, Point point)
{
var element = source.InputHitTest(point) as UIElement;
if (element != null)
{
// Get the object from the element
object data = DependencyProperty.UnsetValue;
while (data == DependencyProperty.UnsetValue)
{
// Try to get the object value for the corresponding element
data = source.ItemContainerGenerator.ItemFromContainer(element);
// Get the parent and we will iterate again
if (data == DependencyProperty.UnsetValue)
{
element = VisualTreeHelper.GetParent(element) as UIElement;
}
// If we reach the actual listbox then we must break to avoid an infinite loop
if (element == source)
{
return(null);
}
}
// Return the data that we fetched only if it is not Unset value,
// which would mean that we did not find the data
var entry = data as MessageEntry;
if (entry != null)
{
return(entry.File);
}
}
return(null);
}
ListBoxItem findSelectedItem(ListBox c, System.Windows.Point p)
{
Visual findFrom = c.InputHitTest(p) as Visual;
return findFrom.FindParent<ListBoxItem>() as ListBoxItem;
}
/// <summary>The get data from list box.</summary>
/// <param name="source">The source.</param>
/// <param name="point">The point.</param>
/// <returns>The <see cref="object"/>.</returns>
private static object GetDataFromListBox(ListBox source, Point point)
{
var element = source.InputHitTest(point) as UIElement;
if (element == null)
{
return null;
}
var data = DependencyProperty.UnsetValue;
while (data == DependencyProperty.UnsetValue)
{
if (element == null)
{
continue;
}
data = source.ItemContainerGenerator.ItemFromContainer(element);
if (data == DependencyProperty.UnsetValue)
{
element = VisualTreeHelper.GetParent(element) as UIElement;
}
if (source.Equals(element))
{
return null;
}
}
return data != DependencyProperty.UnsetValue ? data : null;
}
private Artist GetBoundItemFromPoint(ListBox box, Point point)
{
UIElement element = box.InputHitTest(point) as UIElement;
while (element != null)
{
if (element == box)
{
return null;
}
Artist item = getDataItem(element);
bool itemFound = (item != null);
if (itemFound)
{
return (Artist)item;
}
else
{
element = VisualTreeHelper.GetParent(element) as UIElement;
}
}
return null;
}
