/// <summary>
/// Handles the mouse left button down event on data selector.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">Event arguments containing instance data.</param>
private void DataSelector_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!this.IsMouseCaptured)
{
FrameworkElement element = e.OriginalSource as FrameworkElement;
if (element.DataContext != null)
{
this.mouseCaptured = this.CaptureMouse();
this.oldIndex = this.GetIndex(e.OriginalSource);
this.popUp.DataContext = element.DataContext;
this.dataSelectorItem = this.GetDataSelectorItem(element);
}
}
}
/// <summary>
/// Gets the data selector item corresponding to the element.
/// </summary>
/// <param name="element">Element to which data selector item needs to be determined.</param>
/// <returns>Data selector item corresponding to the element.</returns>
private DataSelectorItem GetDataSelectorItem(FrameworkElement element)
{
DataSelectorItem dataSelectorItem = element as DataSelectorItem;
if (dataSelectorItem != null)
{
return(dataSelectorItem);
}
else
{
FrameworkElement parent = element.Parent as FrameworkElement;
if (parent != null)
{
return(this.GetDataSelectorItem(parent));
}
}
return(null);
}
/// <summary>
/// Handles the mouse left button up event on data selector.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">Event arguments containing instance data.</param>
private void DataSelector_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (this.IsMouseCaptured && this.dataSelectorItem != null)
{
DataSelectorItem newDataSelectorItem = null;
this.popUp.IsOpen = false;
this.ReleaseMouseCapture();
this.mouseCaptured = false;
int newIndex = -1;
#if SILVERLIGHT
if (e.OriginalSource != null)
{
newIndex = this.GetIndex(e.OriginalSource);
newDataSelectorItem = this.GetDataSelectorItem(e.OriginalSource as FrameworkElement);
}
#else
HitTestResult result = VisualTreeHelper.HitTest(this, e.GetPosition(this));
if (result != null)
{
newIndex = this.GetIndex(result.VisualHit);
newDataSelectorItem = this.GetDataSelectorItem(result.VisualHit as FrameworkElement);
}
#endif
if (this.oldIndex > -1 && newIndex > -1 && this.oldIndex != newIndex && newDataSelectorItem != null)
{
this.Swap(this, new ReorderedEventArgs(this.oldIndex, newIndex));
}
if (this.dataSelectorItem != newDataSelectorItem)
{
this.dataSelectorItem.ClearHoverStyle();
}
this.dataSelectorItem = null;
this.oldIndex = -1;
}
}
/// <summary>
/// Handles the mouse left button down event on data selector.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">Event arguments containing instance data.</param>
private void DataSelector_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!this.IsMouseCaptured)
{
FrameworkElement element = e.OriginalSource as FrameworkElement;
if (element.DataContext != null)
{
this.mouseCaptured = this.CaptureMouse();
this.oldIndex = this.GetIndex(e.OriginalSource);
this.popUp.DataContext = element.DataContext;
this.dataSelectorItem = this.GetDataSelectorItem(element);
}
}
}
/// <summary>
/// Handles the mouse left button up event on data selector.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">Event arguments containing instance data.</param>
private void DataSelector_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (this.IsMouseCaptured && this.dataSelectorItem != null)
{
DataSelectorItem newDataSelectorItem = null;
this.popUp.IsOpen = false;
this.ReleaseMouseCapture();
this.mouseCaptured = false;
int newIndex = -1;
#if SILVERLIGHT
if (e.OriginalSource != null)
{
newIndex = this.GetIndex(e.OriginalSource);
newDataSelectorItem = this.GetDataSelectorItem(e.OriginalSource as FrameworkElement);
}
#else
HitTestResult result = VisualTreeHelper.HitTest(this, e.GetPosition(this));
if (result != null)
{
newIndex = this.GetIndex(result.VisualHit);
newDataSelectorItem = this.GetDataSelectorItem(result.VisualHit as FrameworkElement);
}
#endif
if (this.oldIndex > -1 && newIndex > -1 && this.oldIndex != newIndex && newDataSelectorItem != null)
{
this.Swap(this, new ReorderedEventArgs(this.oldIndex, newIndex));
}
if (this.dataSelectorItem != newDataSelectorItem)
{
this.dataSelectorItem.ClearHoverStyle();
}
this.dataSelectorItem = null;
this.oldIndex = -1;
}
}
