private void deleteCurrentlySelectedNode()
{
if (treeViewScene.SelectedNode == null)
{
return;
}
TreeNode current = treeViewScene.SelectedNode;
TreeNode parrent = current.Parent;
if (parrent == null)
{
//tried to delete the _root node, yell at the user
string msg = "You can not delete the Root node!";
MessageBox.Show(msg, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (!checkUserConfirmsFirstDelete())
{
return; //check if we are allowed to delete
}
//green light, lets find the parent and delete it :)
ScenegraphNode currentNode = (ScenegraphNode)current.Tag;
ScenegraphNode parrentNode = (ScenegraphNode)parrent.Tag;
Separator parrentSeparator = parrentNode.ToSeparator();
parrentSeparator.removeChild(currentNode);
//remove node from scene graph and make its parrent selected
parrent.Nodes.Remove(current);
treeViewScene.SelectedNode = parrent;
}
private TreeNode buildTree(ScenegraphNode node, Separator initiallySelectedNodeToFind)
{
TreeNode tNode = new TreeNode();
tNode.Tag = node;
//check for this being the currently selected node...
if (node.isEqualSeparator(initiallySelectedNodeToFind))
{
_initiallySelected = tNode;
}
string formatedName = node.Name.Length == 0 ? node.TypeName : String.Format("{0} ({1})", node.TypeName, node.Name);
tNode.Text = formatedName;
ScenegraphNode[] children = node.getChildren();
foreach (ScenegraphNode child in children)
{
tNode.Nodes.Add(buildTree(child, initiallySelectedNodeToFind));
}
return(tNode);
}
private TreeNode findTreeNodeContainingCoinNodeHelper(Separator nodeToSearchFor, TreeNode searchBase)
{
ScenegraphNode baseNode = (ScenegraphNode)searchBase.Tag;
if (baseNode.isEqualSeparator(nodeToSearchFor))
{
return(searchBase);
}
foreach (TreeNode child in searchBase.Nodes)
{
TreeNode subSearchResult = findTreeNodeContainingCoinNodeHelper(nodeToSearchFor, child);
if (subSearchResult != null)
{
return(subSearchResult);
}
}
//no luck
return(null);
}
private bool _makingChanges = false; //prevents looping on ourselves
public ScenegraphTreeViewer(ExaminerViewer viewer, Separator root)
{
InitializeComponent();
this.Text = Application.ProductName;
_viewer = viewer;
_root = root;
_rootScenegraph = new ScenegraphNode(_root);
//get the currently selected node.
Separator initiallySelectedSeparator = _viewer.getSeparatorForSelection();
treeViewScene.Nodes.Add(buildTree(_rootScenegraph, initiallySelectedSeparator));
if (_initiallySelected != null)
{
treeViewScene.SelectedNode = _initiallySelected;
}
//setup listener
_viewer.OnNewSceneGraphLoaded += new NewSceneGraphLoadedHandler(_viewer_OnNewSceneGraphLoaded);
_viewer.OnObjectSelected += new ObjectSelectedHandler(_viewer_OnObjectSelected);
}
