/// <summary>
/// Remove Deleted Child TreeNodes
/// </summary>
/// <param name="parentNode">The Parent TreeNode</param>
/// <remarks>
/// If a label has been deleted, we want to remove it from the tree node,
/// and have it as little akward as possible.
/// To do this, rather than clear the tree nodes as we refresh them, I'm taking more of a merge appraoch.
/// So this will allow us to remove nodes we no longer need, without having the navigation bounce around,
/// collapse etc.
/// </remarks>
private void RemoveDeletedChildTreeNodes(NavigationTreeNodes.LabelTreeNode parentNode)
{
try
{
/*
* Checking for null here, because if the cast wont work, eg an incompatible node is selected, this should
* exit pretty gracefully
*/
if (parentNode == null)
{
return;
}
var pulledChildLabels = _labelManagementService.GetChildLabels(parentNode.BoundLabel);
var keysToRemove = new List <string>();
var nodeEnumerator = parentNode.Nodes.GetEnumerator();
while (nodeEnumerator.MoveNext())
{
var currentNode = nodeEnumerator.Current as TreeNode;
if (!pulledChildLabels.Any(l => Convert.ToString(l.ID) == currentNode.Name))
{
keysToRemove.Add(currentNode.Name);
}
}
foreach (var key in keysToRemove)
{
parentNode.Nodes.RemoveByKey(key);
}
}
catch (Exception caught)
{
logger.Error("Unexpected Error Removing Deleted Child TreeNodes", caught);
throw;
}
}
/// <summary>
/// Prefetch Child Treenodes
/// </summary>
/// <param name="parentNode">The Parent Label TreeNode</param>
private void PrefetchChildTreeNodes(NavigationTreeNodes.LabelTreeNode parentNode)
{
try
{
/*
* Checking for null here, because if the cast wont work, eg an incompatible node is selected, this should
* exit pretty gracefully
*/
if (parentNode == null)
{
return;
}
TreeView.SuspendLayout();
//parentNode.Nodes.Clear();
var pulledChildLabels = _labelManagementService.GetChildLabels(parentNode.BoundLabel);
foreach (var childLabel in pulledChildLabels)
{
NavigationTreeNodes.LabelTreeNode labelTreeNode = null;
if (parentNode.Nodes.ContainsKey(Convert.ToString(childLabel.ID)))
{
labelTreeNode = parentNode.Nodes[Convert.ToString(childLabel.ID)] as NavigationTreeNodes.LabelTreeNode;
}
else
{
labelTreeNode = new NavigationTreeNodes.LabelTreeNode(childLabel);
parentNode.Nodes.Add(labelTreeNode);
}
//Testing this out, doing a very explicit pull of the secondary label level
var secondLevelChildLabels = _labelManagementService.GetChildLabels(labelTreeNode.BoundLabel);
foreach (var secondChildLevel in secondLevelChildLabels)
{
if (!labelTreeNode.Nodes.ContainsKey(Convert.ToString(secondChildLevel.ID)))
{
var secondLevelTreeNode = new NavigationTreeNodes.LabelTreeNode(secondChildLevel);
labelTreeNode.Nodes.Add(secondLevelTreeNode);
}
}
}
TreeView.ResumeLayout();
//TODO: Implement Label to Macro Join Table, and supporting service interfaces
//TODO: OK, we need to create a macro list view for the right side pane. Then we can trigger an event or something to have that know to fill.
}
catch (Exception caught)
{
logger.Error("Unexpected Error Prefetching Child TreeNodes", caught);
throw;
}
}
/// <summary>
/// Attach Child Label to TreeNode
/// </summary>
/// <param name="parentNode">The Parent TreeNode</param>
/// <param name="label">The Child Label</param>
private void AttachChildLabelToNode(TreeNode parentNode, DataContract.Metadata.Label label)
{
try
{
if (parentNode == null)
{
throw new ArgumentNullException("parentNode");
}
if (label == null)
{
throw new ArgumentNullException("label");
}
var newChildLabelNode = new NavigationTreeNodes.LabelTreeNode(label);
parentNode.Nodes.Add(newChildLabelNode);
TreeView.SelectedNode = newChildLabelNode;
}
catch (Exception caught)
{
logger.Error("Unexpected Error Attaching Child Label to TreeNode", caught);
throw;
}
}
/// <summary>
/// Refresh Root LabelNode
/// </summary>
private void RefreshRootLabelNode()
{
try
{
TreeView.SuspendLayout();
_rootLabelsTreeNode.Nodes.Clear();
var topLevelLabels = _labelManagementService.GetTopLevelLabels();
foreach (var label in topLevelLabels)
{
var labelTreeNode = new NavigationTreeNodes.LabelTreeNode(label);
_rootLabelsTreeNode.Nodes.Add(labelTreeNode);
PrefetchChildTreeNodes(labelTreeNode);
}
_rootLabelsTreeNode.Expand();
TreeView.ResumeLayout();
}
catch (Exception caught)
{
logger.Error("Unexpected Error Refreshing Root LabelNode", caught);
throw;
}
}