public void RemoveFromParent()
{
if (Parent == null)
return;
Parent.Children.Remove(this);
this.Parent = null;
}
static void Main(string[] args)
{
#region Start building tree out of TestTreeNodes objects
TestTreeNode topNode = new TestTreeNode { NodeInfo = "TopNode" };
TestTreeNode level2Node1 = topNode.AddChild("Level2Node_1");
TestTreeNode level2Node2 = topNode.AddChild("Level2Node_2");
TestTreeNode level3Node1 = level2Node1.AddChild("Level3Node_1");
TestTreeNode level3Node2 = level2Node1.AddChild("Level3Node_2");
TestTreeNode level3Node3 = level2Node2.AddChild("Level3Node_3");
TestTreeNode level3Node4 = level2Node2.AddChild("Level3Node_4");
#endregion End tree building
// to parent function
Func<TestTreeNode, TestTreeNode> toParentFn =
(treeNode) => treeNode.Parent;
// to children function
Func<TestTreeNode, IEnumerable<TestTreeNode>> toChildrenFn =
(treeNode) => treeNode.Children;
Console.WriteLine("Print ancestors of node level3Node3");
foreach (var treeNode in level3Node3.Ancestors(toParentFn))
Console.WriteLine("\t" + treeNode.NodeInfo);
Console.WriteLine("\n");
Console.WriteLine("Print self and ancestors of node level3Node3");
foreach (var treeNode in level3Node3.SelfAndAncestors(toParentFn))
Console.WriteLine("\t" + treeNode.NodeInfo);
Console.WriteLine("\nPrint whole tree");
foreach (var treeNodeInfo in topNode.SelfAndDescendantsWithLevelInfo(toChildrenFn))
{
// shift the string by the level number plus 1 tabs
string tabs = new string('\t', treeNodeInfo.Level + 1);
Console.WriteLine(tabs + treeNodeInfo.TheNode.NodeInfo);
}
}
static void Main(string[] args)
{
#region Start building tree out of TestTreeNodes objects
TestTreeNode topNode = new TestTreeNode { NodeInfo = "TopNode" };
TestTreeNode level2Node1 = topNode.AddChild("Level2Node_1");
TestTreeNode level2Node2 = topNode.AddChild("Level2Node_2");
TestTreeNode level3Node1 = level2Node1.AddChild("Level3Node_1");
TestTreeNode level3Node2 = level2Node1.AddChild("Level3Node_2");
TestTreeNode level3Node3 = level2Node2.AddChild("Level3Node_3");
TestTreeNode level3Node4 = level2Node2.AddChild("Level3Node_4");
#endregion End tree building
Func<TestTreeNode, TestTreeNode> toParentTreeFunction = (node) => node.Parent;
Func<TestTreeNode, IEnumerable<TestTreeNode>> toChildrenTreeFunction = (node) => node.Children;
IEnumerable<TreeNodeInfo<TestTreeNode>> allTreeNodes =
topNode.SelfAndDescendantsWithLevelInfo(toChildrenTreeFunction);
// print all the tree nodes
Console.WriteLine("\nPrint all nodes");
foreach (TreeNodeInfo<TestTreeNode> treeNodeWithLevelInfo in allTreeNodes)
{
string shiftToRight = new string('\t', treeNodeWithLevelInfo.Level + 1);
Console.WriteLine(shiftToRight + treeNodeWithLevelInfo.TheNode.NodeInfo);
}
// create REvent
REvent<TestTreeNode, string> aTestEvent = new REvent<TestTreeNode, string>();
// assign handlers for each of the
foreach (TreeNodeInfo<TestTreeNode> treeNodeWithLevelInfo in allTreeNodes)
{
TestTreeNode currentNode = treeNodeWithLevelInfo.TheNode;
aTestEvent.AddHander
(
currentNode,
(str) =>
{
Console.WriteLine("Target Node: " + currentNode.NodeInfo + "\t\t\tSource Node: " + str);
}
);
}
Console.WriteLine("\nTesting event bubbling:");
aTestEvent.RaiseBubbleEvent(level3Node3, toParentTreeFunction, level3Node3.NodeInfo);
Console.WriteLine("\nTesting event tunneling:");
aTestEvent.RaiseTunnelEvent(level3Node3, toParentTreeFunction, level3Node3.NodeInfo);
Console.WriteLine("\nTesting event Direct Event (without bubbling and tunneling):");
aTestEvent.RaiseEvent(level3Node3, level3Node3.NodeInfo);
Console.WriteLine("\nTesting event propagation to descendents:");
aTestEvent.RaiseEventPropagateToDescendents(level2Node1, toChildrenTreeFunction, level2Node1.NodeInfo);
// stopping propagation by returning false from a handler
aTestEvent.RemoveAllHandlers(level2Node2);
aTestEvent.AddHander
(
level2Node2,
(eventInfo) =>
{
Console.WriteLine("Terminating event propagation at node " + level2Node2.NodeInfo);
eventInfo.IsCanceled = true;
}); // terminate event propagation at this node
Console.WriteLine("\nTesting event bubbling with event propagation termination:");
aTestEvent.RaiseBubbleEvent(level3Node3, toParentTreeFunction, level3Node3.NodeInfo);
Console.WriteLine("\nTesting event tunneling with event propagation termination:");
aTestEvent.RaiseTunnelEvent(level3Node3, toParentTreeFunction, level3Node3.NodeInfo);
Console.WriteLine("\nTesting event propagation from the TopNode to its descendents with event propagation termination:");
aTestEvent.RaiseEventPropagateToDescendents(topNode, toChildrenTreeFunction, topNode.NodeInfo);
}
