protected override void RecursivelyCreatChildren(Dictionary <string, BTEditorSprite> _sprites)
{
if (m_node != null)
{
BTConditionNode node = m_node as BTConditionNode;
if (node.Child != null)
{
// create link
string lineKey = BTEditorLine.GetKey(m_node, node.Child);
if (!_sprites.ContainsKey(lineKey))
{
BTEditorLine line = new BTEditorLine(m_treeViewer);
line.ParentNode = m_node;
line.ChildNode = node.Child;
_sprites.Add(line.GetKey(), line);
}
// do for children
RecursivelyCreateSprites(_sprites, node.Child, m_treeViewer);
}
}
}
/**
* @brief Set child's parent to _newParent. the function do the following things
* 1. check whether the child and parent exist
* 2. check whether there would be cycle structure: if the _child is _newParent's ancestor
* 3. if the _newParent is ConditionNode, check if it has child. If it does, the action is illege
* 4. break the old edge
* 5. make new connection
**/
internal bool SetParent(string _child, string _newParent)
{
if (!m_sprites.ContainsKey(_child) || !m_sprites.ContainsKey(_newParent))
{
return(false);
}
BTEditorRectangle child = m_sprites[_child] as BTEditorRectangle;
BTEditorRectangle newParent = m_sprites[_newParent] as BTEditorRectangle;
// check cycle
if (child.Node.FindParent(newParent.Node) != null)
{
System.Windows.Forms.MessageBox.Show("Cycle structor is illegal.");
return(false);
}
// check newParent
if (newParent.Node.GetType().IsSubclassOf(typeof(BTConditionNode)))
{
BTNode otherChild = (newParent.Node as BTConditionNode).Child;
if (otherChild != null)
{
System.Windows.Forms.MessageBox.Show("Condition node cannot have more than one child.");
return(false);
}
}
// destroy old edge
BTNode oldBTParent = m_btTree.FindParent(child.Node);
if (oldBTParent != null)
{
string oldEdgeKey = BTEditorLine.GetKey(oldBTParent, child.Node);
if (m_sprites.ContainsKey(oldEdgeKey))
{
m_sprites.Remove(oldEdgeKey);
}
if (oldBTParent.GetType().IsSubclassOf(typeof(BTCompositeNode)))
{
(oldBTParent as BTCompositeNode).RemoveChild(child.Node);
}
else if (oldBTParent.GetType().IsSubclassOf(typeof(BTConditionNode)))
{
(oldBTParent as BTConditionNode).Child = null;
}
}
// create new link
// destroy other edge if necessary
if (newParent.Node.GetType().IsSubclassOf(typeof(BTConditionNode)))
{
(newParent.Node as BTConditionNode).Child = child.Node;
}
else if (newParent.Node.GetType().IsSubclassOf(typeof(BTCompositeNode)))
{
(newParent.Node as BTCompositeNode).AddChild(child.Node);
}
else
{
Debug.Assert(false, "Cannot add key to node with type: " + newParent.Node.GetType().Name);
return(false);
}
BTEditorLine newLine = new BTEditorLine(this);
newLine.ParentNode = newParent.Node;
newLine.ChildNode = child.Node;
m_sprites.Add(newLine.GetKey(), newLine);
AutoLayoutChart();
Refresh();
return(true);
}
