/// <summary>
/// Removes a node from the children.
/// </summary>
/// <param name="childViewModel">The child to remove.</param>
public void RemoveChild(CoverageNodeViewModel childViewModel)
{
if (Children.Remove(childViewModel))
{
Model.RecountCoverage();
}
}
/// <summary>
/// Initializes a new instance of <see cref="CoverageNodeViewModel"/>.
/// </summary>
/// <param name="model">The model to initialize with.</param>
/// <param name="parent">The parent coverage row's view model.</param>
public CoverageNodeViewModel(CoverageNodeViewModel parent, CoverageNodeModel model)
: base(model)
{
Parent = parent;
IsExpanded = false;
IsVisible = DetermineVisibility();
ToggleExpandedCmd = new RelayCommand(ToggleExpanded);
SetupChildren(model);
int depth = 0;
var node = parent;
while (node != null)
{
node = node.Parent;
depth++;
}
RowDepth = depth;
Messenger.Register <ThresholdChangedMessage>(this, HandleThresholdChanged);
}
/// <summary>
/// Appends a coverage node and all children in such a way as to flatten the coverage data tree.
/// </summary>
/// <param name="vm">The coverage data node.</param>
/// <param name="flatList">The list to add rows to.</param>
private static void AppendRows(CoverageNodeViewModel vm, List <CoverageNodeViewModel> flatList)
{
flatList.Add(vm);
foreach (var child in vm.Children)
{
AppendRows(child, flatList);
}
}
/// <summary>
/// Determines the visibility of this node.
/// </summary>
/// <returns>True if this node is visible, or false if not.</returns>
private bool DetermineVisibility()
{
// check the parent chain for any collapsed nodes.
bool parentsExpanded = true;
CoverageNodeViewModel parent = Parent;
while (parentsExpanded &&
parent != null)
{
parentsExpanded = parent.IsExpanded;
parent = parent.Parent;
}
// a parent somewhere up the chain is collapsed; this is not visible.
if (!parentsExpanded)
{
return(false);
}
return(true);
}
/// <summary>
/// Removes the selected node and all of its children.
/// </summary>
private void RemoveSelectedNode()
{
if (SelectedCoverageRow != null)
{
CoverageNodeViewModel parent = SelectedCoverageRow.Parent;
if (parent != null)
{
// non-root node.
parent.RemoveChild(SelectedCoverageRow);
// rebuild the row list.
RebuildRowList();
}
else
{
// removing a root, just remove from CoverageRows and let the
// CollectionChanged handler deal with updating the list.
CoverageRows.Remove(SelectedCoverageRow);
}
}
}
