/// <summary>
/// Tack the changes in CurrentPath so we correctly can update the
/// IsCurrentItem property on the child Items
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void CurrentDirectoryChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
BreadCrumb breadCrumb = d as BreadCrumb;
if (e.NewValue != null)
{
BreadCrumbItem path = e.NewValue as BreadCrumbItem;
foreach (object item in breadCrumb.Items)
{
(item as BreadCrumbItem).IsCurrentItem = false;
}
path.IsCurrentItem = true;
if (breadCrumb.Items.Count > 0)
{
breadCrumb.IsAtHomeDirectory = (path == breadCrumb.Items[0]);
}
else
{
breadCrumb.IsAtHomeDirectory = true;
}
// Don't trigger directory changed event while closing
if (!breadCrumb._isClosing)
{
breadCrumb.RaiseDirectoryChanged(path);
}
}
}
/// <summary>
/// Used for switching directories or for adding a new directory to the list of children
/// </summary>
/// <param name="path"></param>
private void CloseToDirectory(BreadCrumbItem breadCrumbItem)
{
if (Items.Contains(breadCrumbItem))
{
// This is what we aim for
TargetDirectory = breadCrumbItem;
CloseCurrentDirectory();
}
}
public void CloseToDirectory(object directory)
{
BreadCrumbItem breadCrumbItem = null;
if (crossRef.Keys.Contains(directory))
{
breadCrumbItem = crossRef[directory];
}
if (breadCrumbItem != null)
{
CloseToDirectory(breadCrumbItem);
}
}
/// <summary>
/// Triggered when the close animation for a BreadCrumbItem is completed.
/// The logic triggers the next animation in the chain until TargetPath is
/// reached.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DirectoryCloseComplete(object sender, BreadCrumbEventArgs e)
{
e.BreadCrumbItem.Closed -= DirectoryCloseComplete;
crossRef.Remove(e.BreadCrumbItem.Tag);
Items.Remove(e.BreadCrumbItem);
BreadCrumbItem nextInChain = Items[Items.Count - 1] as BreadCrumbItem;
if (TargetDirectory == nextInChain)
{
_isClosing = false;
}
CurrentDirectory = nextInChain;
CloseCurrentDirectory();
}
public void AddDirectory(string caption, object directory)
{
if (!crossRef.Keys.Contains(directory))
{
BreadCrumbItem breadCrumbItem = new BreadCrumbItem()
{
Header = caption, Tag = directory
};
breadCrumbItem.Clicked += new BreadCrumbEventHandler(BreadCrumbItemClicked);
CurrentDirectory = breadCrumbItem;
Items.Add(breadCrumbItem);
crossRef.Add(directory, breadCrumbItem);
}
else
{
CloseToDirectory(directory);
}
}
private void RaiseDirectoryChanged(BreadCrumbItem breadCrumbItem)
{
BreadCrumbDirectoryEventArgs args = new BreadCrumbDirectoryEventArgs(DirectoryChangedEvent, breadCrumbItem.Tag);
this.RaiseEvent(args);
}
private void RaisePreviewDirectoryClosing(BreadCrumbItem breadCrumbItem)
{
BreadCrumbDirectoryEventArgs args = new BreadCrumbDirectoryEventArgs(PreviewDirectoryCloseToEvent, breadCrumbItem.Tag);
this.RaiseEvent(args);
}
public BreadCrumbEventArgs(RoutedEvent routedEvent, BreadCrumbItem path)
: base(routedEvent)
{
this.BreadCrumbItem = path;
}
