public async Task GoDeleteActiveEdges()
{
await DeleteActive.InvokeAsync("edge");
}
public async Task OnKeyUp(KeyboardEventArgs e)
{
string value = e.Key.ToLower();
if (value == "delete" || value == "backspace")
{
await DeleteActive.InvokeAsync("all");
}
if (e.CtrlKey)
{
if (e.ShiftKey)
{
if (value == "i")
{
await Activate("nodes");
}
else if (value == "e")
{
await Activate("edges");
}
else if (value == "s")
{
await SaveAsSVG();
}
}
else
{
if (value == "c")
{
Copy();
}
else if (value == "a")
{
await Activate("all");
}
}
}
else
{
if (value == "f")
{
await ChangeMenu.InvokeAsync(NavChoice.File);
}
else if (value == "h")
{
await ChangeMenu.InvokeAsync(NavChoice.Home);
}
else if (value == "i")
{
await ChangeMenu.InvokeAsync(NavChoice.Insert);
}
else if (value == "v")
{
await ChangeMenu.InvokeAsync(NavChoice.View);
}
else if (value == "d")
{
await ChangeMenu.InvokeAsync(NavChoice.Design);
}
else if (value == "?")
{
await ChangeMenu.InvokeAsync(NavChoice.About);
}
else if (value == "x")
{
await ChangeMenu.InvokeAsync(null);
}
else if (ActiveGraph.Nodes.Count == 2 && !ActiveGraph.Edges.Any() && value == "c")
{
NewEdge.Tail = ActiveGraph.Nodes[0];
NewEdge.Head = ActiveGraph.Nodes[1];
NewEdge.MultiEdges = EdgeService.MultiGraphEdges(Graph.Edges, NewEdge.Head, NewEdge.Tail, Graph.Directed);
if (Graph.Weighted)
{
NewEdge.GetEdgeWeight = true;
}
else if (!NewEdge.MultiEdges.Any())
{
await AddNewEdge(true);
}
}
}
}
public async Task GoDeleteActiveNodes()
{
await DeleteActive.InvokeAsync("node");
}
public async Task Select(MenuEventArgs <MenuItem> e)
{
switch (e.Item.Text)
{
case "Copy":
Copy();
break;
case "Paste":
await Paste();
break;
case "Left":
case "Center":
case "Right":
case "Top":
case "Middle":
case "Bottom":
NodeService.Align(ActiveGraph.Nodes, e.Item.Text);
break;
case "Delete":
await DeleteActive.InvokeAsync("all");
break;
case "Edit":
case "Nodes":
case "Edges":
await ChangeMenu.InvokeAsync(NavChoice.Design);
break;
case "All Nodes":
await Activate("nodes");
break;
case "All Edges":
await Activate("edges");
break;
case "Everything":
await Activate("all");
break;
case "Insert Edge":
await InsertEdge();
break;
case "Insert Node":
NodeService.AddNode(Graph.Nodes, Options.Default, origin[0] * SVGControl.Scale + SVGControl.Xaxis, origin[1] * SVGControl.Scale + SVGControl.Yaxis);
await GraphChanged.InvokeAsync(Graph);
break;
case "Stop Algorithm":
if (StartAlgorithm.Done)
{
StartAlgorithm.Clear = true;
}
else
{
await Reset();
}
break;
case "Zoom In":
if (ZoomService.ZoomIn(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
break;
case "Zoom Out":
if (ZoomService.ZoomOut(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
break;
}
}
