//public string SelectedLevelSelectedChildName
//{
// get { return _selectedLevelSelectedChild?.Name; }
// set
// {
// try
// {
// if (string.IsNullOrEmpty(value))
// {
// _selectedLevelSelectedChild = null;
// }
// else if (CurrentlDisplayNode == null)
// {
// throw new UnspecifiedException("");
// }
// else if ((_selectedLevelSelectedChild == null) || (!_selectedLevelSelectedChild.Name.Equals(value)))
// {
// _selectedLevelSelectedChild = _selectedLevelChildren[(string)value];
// //CurrentlySelectedTreeLevel.SelectedChildNode = _selectedLevelSelectedChild;
// CurrentEquationCalc = null;
// OnPropertyChanged("CurrentEquationCalc");
// RefreshVisibles();
// RefreshSelectedTreeLevels(_selectedLevelSelectedChild);
// }
// }
// catch (Exception ex)
// {
// Logging.LogException(ex);
// throw;
// }
// }
//}
//private void RefreshSelectedTreeLevels(EquationLibraryContentNode lastTnToKeep)
//{
// try
// {
// int lastGoodItem = 0;
// for (int i = 0; i < EquationLibraryDisplayTree.Count; i++)
// {
// if (EquationLibraryDisplayTree[i]?.SelectedChildNode == lastTnToKeep)
// {
// lastGoodItem = i;
// break;
// }
// }
// int j = EquationLibraryDisplayTree.Count - 1;
// while (j > lastGoodItem)
// {
// EquationLibraryDisplayTree.RemoveAt(j);
// j--;
// }
// // Add the selection point at the end
// EquationLibraryDisplayNode lastSelectedTreeLevel = EquationLibraryDisplayTree[EquationLibraryDisplayTree.Count - 1];
// if (lastSelectedTreeLevel?.SelectedChildNode?.ChildTreeNodes?.Count > 0)
// {
// EquationLibraryDisplayNode newSelectedTreeLevel = new EquationLibraryDisplayNode(lastSelectedTreeLevel, lastSelectedTreeLevel.SelectedChildNode, lastSelectedTreeLevel.Indent + " ");
// EquationLibraryDisplayTree.Add(newSelectedTreeLevel);
// }
// else
// {
// SelectEquation.Execute(null);
// }
// }
// catch (Exception ex)
// {
// Logging.LogException(ex);
// throw;
// }
//}
/// <returns>Number of children</returns>
public int ExpandTreeLevel(EquationLibraryDisplayNode displayNode)
{
try
{
if (CurrentDisplayNode != null)
{
CurrentDisplayNode.IsSelected = false;
}
EquationLibraryContentNode selectedContentNode = displayNode.ContentNode;
selectedContentNode.Expanded = !selectedContentNode.Expanded;
RefreshEquationLibraryDisplayTree();
CurrentDisplayNode = FindDisplayNode(selectedContentNode);
CurrentEquationCalc = null;
OnPropertyChanged("CurrentEquationCalc");
if (CurrentDisplayNode == null)
{
throw new UnspecifiedException("CurrentDisplayNode should not be null");
}
CurrentDisplayNode.IsSelected = true;
return(selectedContentNode.ChildTreeNodes.Count);
}
catch (Exception ex)
{
Logging.LogException(ex);
throw;
}
}
private void lstTreeLevels_ItemTap(object sender, ItemTappedEventArgs e)
{
try
{
EquationLibraryDisplayNode displayNode = e.Item as EquationLibraryDisplayNode;
int NumChildren = _vmBrowseEquation2.ExpandTreeLevel(displayNode);
if (NumChildren == 0) // Show the list of equations for this node
{
_vmBrowseEquation2.SelectEquation(() => this.Navigation.PopAsync());
}
}
catch (Exception ex)
{
Logging.LogException(ex);
throw;
}
}
private void AddEquationLibraryDisplayLevels(bool isTop, EquationLibraryDisplayNode parentNode, EquationLibraryContentNode contentNode)
{
EquationLibraryDisplayNode displayNode = null;
if (!isTop)
{
displayNode = new EquationLibraryDisplayNode
(parentNode, contentNode, ((parentNode == null) ? "" : parentNode.Indent + " "));
EquationLibraryDisplayTree.Add(displayNode);
}
if (contentNode.Expanded)
{
foreach (var childContentNode in contentNode.ChildTreeNodes)
{
AddEquationLibraryDisplayLevels(false, displayNode, childContentNode);
}
}
}
public EquationLibraryDisplayNode(EquationLibraryDisplayNode parent, EquationLibraryContentNode contentNode, string indent)
{
Parent = parent;
ContentNode = contentNode;
Indent = indent;
}