private TreeViewItem CreateTreeItem(TreeListView tree, string name, ImageSource imageSource, int level, UIElement value = null, string typeString = null, bool nameItalic = false)
{
TreeViewItem item = new TreeViewItem();
bool alreadyLoaded = false;
GridViewRowPresenter rowPresenter = new GridViewRowPresenter()
{
Columns = tree.Columns,
Content = level,
};
item.Header = rowPresenter;
item.Loaded += (sender, e) =>
{
if (alreadyLoaded)
{
return;
}
alreadyLoaded = true;
FrameworkElement expander = item.Template.FindName("Expander", item) as FrameworkElement;
StackPanel nameStackPanel = FindVisualChild <StackPanel>(rowPresenter, "Name");
StackPanel valueStackPanel = FindVisualChild <StackPanel>(rowPresenter, "Value");
StackPanel typeStackPanel = FindVisualChild <StackPanel>(rowPresenter, "Type");
if (expander != null && nameStackPanel != null)
{
Panel expanderParent = expander.Parent as Panel;
if (expanderParent != null)
{
if (level > 0)
{
expanderParent.Margin = new Thickness(-19, 0, 0, 0);
nameStackPanel.Margin = new Thickness(10 * (level - 1), 0, 0, 0);
}
else
{
nameStackPanel.Margin = new Thickness(-19, 0, 0, 0);
}
nameStackPanel.Orientation = Orientation.Horizontal;
expanderParent.Children.Remove(expander);
nameStackPanel.Children.Add(expander);
nameStackPanel.Children.Add(CreateTextWithIcon(name, imageSource, italic: nameItalic));
}
}
if (valueStackPanel != null && value != null)
{
valueStackPanel.Orientation = Orientation.Horizontal;
valueStackPanel.Children.Add(value);
}
if (typeStackPanel != null && typeString != null)
{
typeStackPanel.Orientation = Orientation.Horizontal;
typeStackPanel.Children.Add(new TextBlock()
{
Text = typeString,
});
}
};
return(item);
}
private void TreeViewItem_Expanded(object sender, RoutedEventArgs e)
{
try
{
TreeViewItem item = e.Source as TreeViewItem;
TreeListView tree = null;
FrameworkElement parent = item?.Parent as FrameworkElement;
while (tree == null && parent != null)
{
tree = parent as TreeListView;
parent = parent.Parent as FrameworkElement;
}
if ((item.Items.Count == 1) && (item.Items[0].ToString() == ExpandingItemText))
{
TreeViewItemTag tag = item.Tag as TreeViewItemTag;
System.Threading.Tasks.Task.Run(() =>
{
IResultVisualizer resultTreeItem = tag.ResultTreeItem as IResultVisualizer;
IEnumerable <IResultVisualizer> children = tag.ResultTreeItem as IEnumerable <IResultVisualizer>;
try
{
if (resultTreeItem != null)
{
List <Tuple <string, IEnumerable <IResultVisualizer> > > customChildren = new List <Tuple <string, IEnumerable <IResultVisualizer> > >();
foreach (Tuple <string, IEnumerable <IResultVisualizer> > customChild in resultTreeItem.ChildrenGroups)
{
if (customChild.Item2.Any())
{
if (customChild.Item1 == ResultVisualizer.ExpandedGroupName)
{
List <IResultVisualizer> cachedItems = customChild.Item2.ToList();
customChildren.Add(Tuple.Create(customChild.Item1, (IEnumerable <IResultVisualizer>)cachedItems));
foreach (IResultVisualizer child in cachedItems)
{
child.Initialize();
}
}
else
{
customChildren.Add(customChild);
}
}
}
item.Dispatcher.InvokeAsync(() =>
{
try
{
int level = tag.Level;
item.Items.Clear();
foreach (Tuple <string, IEnumerable <IResultVisualizer> > customChild in customChildren)
{
if (customChild.Item1 == ResultVisualizer.ExpandedGroupName)
{
foreach (IResultVisualizer child in customChild.Item2)
{
item.Items.Add(CreateTreeItem(tree, child, level + 1));
}
}
else
{
TreeViewItem customItem = CreateTreeItem(tree, customChild.Item1, CompletionData.GetImage(CompletionDataType.Namespace), level + 1, nameItalic: true);
customItem.Tag = new TreeViewItemTag()
{
Level = level + 1,
ResultTreeItem = customChild.Item2,
};
customItem.Items.Add(ExpandingItemText);
customItem.Expanded += TreeViewItem_Expanded;
item.Items.Add(customItem);
// If we have only one child and if it is [Dynamic] group, let's expand it...
if (customChildren.Count == 1 && customChild.Item1 == ResultVisualizer.DynamicGroupName)
{
customItem.IsExpanded = true;
}
}
}
}
catch (Exception ex3)
{
MessageBox.Show(ex3.ToString());
}
});
}
else if (children != null)
{
List <IResultVisualizer> cachedItems = children.ToList();
foreach (IResultVisualizer child in children)
{
child.Initialize();
}
item.Dispatcher.InvokeAsync(() =>
{
try
{
int level = tag.Level;
item.Items.Clear();
foreach (IResultVisualizer child in cachedItems)
{
item.Items.Add(CreateTreeItem(tree, child, level + 1));
}
}
catch (Exception ex3)
{
MessageBox.Show(ex3.ToString());
}
});
}
}
catch (Exception ex2)
{
MessageBox.Show(ex2.ToString());
}
});
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private UIElement Visualize(IResultVisualizer resultVisualizer)
{
// Create tree and its columns
TreeListView tree = new TreeListView();
tree.Columns.Add(new GridViewColumn()
{
Header = "Name",
CellTemplate = new DataTemplate()
{
VisualTree = CreateStackPanelFactory("Name")
},
Width = 200,
});
tree.Columns.Add(new GridViewColumn()
{
Header = "Value",
CellTemplate = new DataTemplate()
{
VisualTree = CreateStackPanelFactory("Value")
},
Width = 600,
});
tree.Columns.Add(new GridViewColumn()
{
Header = "Type",
CellTemplate = new DataTemplate()
{
VisualTree = CreateStackPanelFactory("Type")
},
Width = 200,
});
// Create header row
TreeViewItem header = new TreeViewItem();
header.Header = new GridViewHeaderRowPresenter()
{
Columns = tree.Columns,
};
tree.Items.Add(header);
// Create result item
TreeViewItem resultItem = CreateTreeItem(tree, resultVisualizer, 0);
tree.Items.Add(resultItem);
resultItem.IsExpanded = true;
// Initialize tree events
tree.PreviewMouseWheel += Tree_PreviewMouseWheel;
tree.PreviewKeyDown += Tree_PreviewKeyDown;
tree.LostFocus += (a, b) =>
{
var item = tree.SelectedItem as TreeViewItem;
if (item != null)
{
item.IsSelected = false;
}
};
tree.GotFocus += (a, b) =>
{
var item = tree.SelectedItem as TreeViewItem;
if (item == null)
{
if (interactiveWindowContent.TraverseDirection.HasValue)
{
if (interactiveWindowContent.TraverseDirection == FocusNavigationDirection.Next)
{
item = tree.Items[1] as TreeViewItem;
}
else
{
item = tree.Items[tree.Items.Count - 1] as TreeViewItem;
while (item.IsExpanded)
{
item = item.Items[item.Items.Count - 1] as TreeViewItem;
}
}
}
else
{
item = tree.Items[1] as TreeViewItem;
}
if (item != null)
{
item.IsSelected = true;
}
}
};
return(tree);
}
