public void update(NodeUI sender, RoutingTable table)
{
foreach (RoutingTuple offeredTuple in table.routingTable.Values)
{
if (offeredTuple.Destination == sender)
continue;
int distanceOffered = routingTable[sender].Distance + offeredTuple.Distance;
if (routingTable.ContainsKey(offeredTuple.Destination))
{
if (routingTable[offeredTuple.Destination].Distance > distanceOffered)
{
routingTable[offeredTuple.Destination].Distance = distanceOffered;
routingTable[offeredTuple.Destination].Link = routingTable[sender].Link;
}
}
else
{
routingTable.Add(offeredTuple.Destination, new RoutingTuple(
offeredTuple.Destination,
distanceOffered,
routingTable[sender].Link
)
);
}
}
}
public LinkUI(NodeUI ep1, NodeUI ep2, int c)
{
endPoint1 = ep1;
endPoint2 = ep2;
InitializeComponent();
Cost = c;
updateLink();
}
// Triggered when a node is clicked, highlight the node and capture the mouse
private void node_MouseLeftButtonDown(object sender, MouseEventArgs e)
{
NodeUI node = (NodeUI)sender;
//
dataGrid1.ItemsSource = node.RoutingTable.displayRoutingTable();
//
if (!selectedNodes.Contains(node))
{
node.CaptureMouse();
Mouse.OverrideCursor = System.Windows.Input.Cursors.Cross;
ForceCursor = true;
selectedNodes.Add(node);
node.Selected = true;
}
}
// Triggered when the mouse is moved and the node is selected, used to update the GUI
private void node_MouseMove(object sender, MouseEventArgs e)
{
NodeUI node = (NodeUI)sender;
if (Mouse.LeftButton == MouseButtonState.Pressed && node.Selected)
{
Point pos = e.GetPosition(canvas1);
Canvas.SetLeft(node, pos.X - node.RenderSize.Width / 2);
Canvas.SetTop(node, pos.Y - node.RenderSize.Height / 2);
if (links.ContainsKey(node))
{
foreach (LinkUI l in links[node])
{
l.updateLink();
}
}
}
}
//
private void Button_Click(object sender, RoutedEventArgs e)
{
//
if (!(String.IsNullOrWhiteSpace(textBox1.Text) || nodes.ContainsKey(textBox1.Text)))
{
NodeUI nui = new NodeUI();
Canvas.SetLeft(nui, 50);
Canvas.SetTop(nui, 50);
nui.Label = textBox1.Text;
nui.MouseLeftButtonDown += new MouseButtonEventHandler(node_MouseLeftButtonDown);
nui.MouseLeftButtonUp += new MouseButtonEventHandler(node_MouseLeftButtonUp);
nui.MouseMove += new MouseEventHandler(node_MouseMove);
nodes.Add(nui.Label, nui);
canvas1.Children.Add(nui);
textBox1.Text = String.Empty;
}
else
listBox1.Items.Add("The node name specified is incorrect.");
}
//
private void Button_Click(object sender, RoutedEventArgs e)
{
//
if (!(String.IsNullOrWhiteSpace(textBox1.Text) || nodes.ContainsKey(textBox1.Text)))
{
NodeUI nui = new NodeUI();
Canvas.SetLeft(nui, 50);
Canvas.SetTop(nui, 50);
nui.Label = textBox1.Text;
nui.MouseLeftButtonDown += new MouseButtonEventHandler(node_MouseLeftButtonDown);
nui.MouseLeftButtonUp += new MouseButtonEventHandler(node_MouseLeftButtonUp);
nui.MouseMove += new MouseEventHandler(node_MouseMove);
nodes.Add(nui.Label, nui);
canvas1.Children.Add(nui);
textBox1.Text = String.Empty;
}
else
{
listBox1.Items.Add("The node name specified is incorrect.");
}
}
public void addRoutingEntry(NodeUI dest, int distance, LinkUI link)
{
routingTable.Add(dest, new RoutingTuple(dest, distance, link));
}
public RoutingTuple(NodeUI dest, int dist, LinkUI l)
{
Destination = dest;
Distance = dist;
Link = l;
}
public RoutingTuple(NodeUI dest, int dist, LinkUI l)
{
Destination = dest;
Distance = dist;
Link = l;
}
public void addRoutingEntry(NodeUI dest, int distance, LinkUI link)
{
routingTable.Add(dest, new RoutingTuple(dest, distance, link));
}
