private TreeDataTemplate GetTreeDataTemplate(object item)
{
DataTemplate template = this.Owner.FindDataTemplate(item);
if (template == null)
{
template = DataTemplate.Default;
}
TreeDataTemplate treeTemplate = template as TreeDataTemplate;
if (treeTemplate == null)
{
treeTemplate = new TreeDataTemplate(template.Build, x => null);
}
return(treeTemplate);
}
protected override Control CreateContainerOverride(object item)
{
T result = item as T;
if (result == null)
{
TreeDataTemplate template = this.GetTreeDataTemplate(item);
result = new T
{
Header = template.Build(item),
Items = template.ItemsSelector(item),
IsExpanded = template.IsExpanded(item),
};
}
return(result);
}
/// <summary>
/// Gets the data template for the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>The template.</returns>
private ITreeDataTemplate GetTreeDataTemplate(object item)
{
IDataTemplate template = Owner.FindDataTemplate(item);
if (template == null)
{
template = DataTemplate.Default;
}
var treeTemplate = template as ITreeDataTemplate;
if (treeTemplate == null)
{
treeTemplate = new TreeDataTemplate(typeof(object), template.Build, x => null);
}
return(treeTemplate);
}
protected override Control CreateContainerOverride(object item)
{
T result = item as T;
if (result == null)
{
TreeDataTemplate template = this.GetTreeDataTemplate(item);
System.Diagnostics.Debug.WriteLine("{0} created item for {1}", this.GetHashCode(), item);
result = new T
{
Header = template.Build(item),
Items = template.ItemsSelector(item),
IsExpanded = template.IsExpanded(item),
};
}
return(result);
}
/// <summary>
/// Appies the binding to the breadcrumb item.
/// </summary>
public void ApplyBinding()
{
object item = DataContext;
if (item == null)
{
return;
}
BreadcrumbItem root = this;
IDataTemplate template = HeaderTemplate;
//DataTemplateSelector templateSelector = HeaderTemplateSelector;
//if (templateSelector != null)
//{
// template = templateSelector.SelectTemplate(item, root);
//}
if (template == null)
{
//DataTemplateKey key = GetResourceKey(item);
//if (key != null)
//{
// this.TryFindResource(key, template);
//}
}
root.SelectedItem = null;
TreeDataTemplate hdt = template as TreeDataTemplate;
if (template != null)
{
//root.Header = template.LoadContent();
}
else
{
root.Header = item;
}
root.DataContext = item;
if (hdt != null)
{
// bind the Items to the hierarchical data template:
root.Bind(BreadcrumbItem.ItemsProperty, hdt.ItemsSource);
}
BreadcrumbBar bar = BreadcrumbBar;
if (bar != null)
{
if (TraceBinding == null)
{
TraceBinding = bar.TraceBinding;
}
if (ImageBinding == null)
{
ImageBinding = bar.ImageBinding;
}
}
if (TraceBinding != null)
{
root.Bind(BreadcrumbItem.TraceProperty, TraceBinding);
}
if (ImageBinding != null)
{
root.Bind(BreadcrumbItem.ImageProperty, ImageBinding);
}
ApplyProperties(item);
}
