/// <summary>
/// Traces the specified path and builds the associated BreadcrumbItems.
/// </summary>
/// <param name="path">The traces separated by the SepearatorString property.</param>
private bool BuildBreadcrumbsFromPath(string newPath)
{
PathConversionEventArgs e = new PathConversionEventArgs(PathConversionEventArgs.ConversionMode.EditToDisplay, newPath, Root, PathConversionEvent);
RaiseEvent(e);
newPath = e.DisplayPath;
BreadcrumbItem item = RootItem;
if (item == null)
{
this.Path = null;
return false;
}
newPath = RemoveLastEmptySeparator(newPath);
string[] traces = newPath.Split(new string[] { SeparatorString }, StringSplitOptions.RemoveEmptyEntries);
if (traces.Length == 0) RootItem.SelectedItem = null;
int index = 0;
List<int> itemIndex = new List<int>();
// if the root is specified as first trace, then skip:
int length = traces.Length;
int max = BreadcrumbsToHide;
if (traces.Length>index && max > 0 && traces[index] == (RootItem.TraceValue))
{
length--;
index++;
max--;
}
for (int i = index; i < traces.Length; i++)
{
if (item == null) break;
string trace = traces[i];
OnPopulateItems(item);
object next = item.GetTraceItem(trace);
if (next == null) break;
itemIndex.Add(item.Items.IndexOf(next));
BreadcrumbItem container = item.ContainerFromItem(next);
item = container;
}
if (length != itemIndex.Count)
{
//recover the last path:
Path = GetDisplayPath();
return false;
}
// temporarily remove the SelectionChangedEvent handler to minimize processing of events while building the breadcrumb items:
RemoveHandler(BreadcrumbItem.SelectionChangedEvent, new RoutedEventHandler(breadcrumbItemSelectedItemChanged));
try
{
item = RootItem;
for (int i = 0; i < itemIndex.Count; i++)
{
if (item == null) break;
item.SelectedIndex = itemIndex[i];
item = item.SelectedBreadcrumb;
}
if (item != null) item.SelectedItem = null;
SelectedBreadcrumb = item;
SelectedItem = item != null ? item.Data : null;
}
finally
{
AddHandler(BreadcrumbItem.SelectionChangedEvent, new RoutedEventHandler(breadcrumbItemSelectedItemChanged));
}
return true;
}
/// <summary>
/// Gets the edit path from the tracess of the BreacrumbItems.
/// </summary>
/// <returns></returns>
public string GetEditPath()
{
string displayPath = GetDisplayPath();
PathConversionEventArgs e = new PathConversionEventArgs(PathConversionEventArgs.ConversionMode.DisplayToEdit, displayPath, Root, PathConversionEvent);
RaiseEvent(e);
return e.EditPath;
}
/// <summary>
/// Gets the path of the specified BreadcrumbItem.
/// </summary>
/// <param name="item">The BreadrumbItem for which to determine the path.</param>
/// <returns>The path of the BreadcrumbItem which is the concenation of all Traces from all selected breadcrumbs.</returns>
public string PathFromBreadcrumbItem(BreadcrumbItem item)
{
StringBuilder sb = new StringBuilder();
while (item != null)
{
if (item == RootItem && sb.Length > 0) break;
if (sb.Length > 0) sb.Insert(0, SeparatorString);
sb.Insert(0, item.TraceValue);
item = item.ParentBreadcrumbItem;
}
PathConversionEventArgs e = new PathConversionEventArgs(PathConversionEventArgs.ConversionMode.DisplayToEdit, sb.ToString(), Root, PathConversionEvent);
RaiseEvent(e);
return e.EditPath;
}
private void BreadcrumbBar_PathConversion(object sender, PathConversionEventArgs e)
{
if (e.Mode == PathConversionEventArgs.ConversionMode.DisplayToEdit)
{
if (e.DisplayPath.StartsWith(@"Computer\", StringComparison.OrdinalIgnoreCase))
{
e.EditPath = e.DisplayPath.Remove(0, 9);
}
else if (e.DisplayPath.StartsWith(@"Network\", StringComparison.OrdinalIgnoreCase))
{
string editPath = e.DisplayPath.Remove(0, 8);
editPath = @"\\" + editPath.Replace('\\', '/');
e.EditPath = editPath;
}
}
else
{
if (e.EditPath.StartsWith("c:", StringComparison.OrdinalIgnoreCase))
{
e.DisplayPath = @"Desktop\Computer\" + e.EditPath;
}
else if (e.EditPath.StartsWith(@"\\"))
{
e.DisplayPath = @"Desktop\Network\" + e.EditPath.Remove(0, 2).Replace('/', '\\');
}
}
}
