/// <summary>
/// Supports a custom context menu.
/// </summary>
public override void PopulateContextMenu(PopulateItemContextMenuEventArgs <IModelItem> args)
{
var graph = args.Context.GetGraph();
var contextMenu = args.Menu;
var graphComponent = (GraphControl)args.Context.CanvasControl;
var item = args.Item as INode;
if (algorithmType == PathsMode.ShortestPaths)
{
if (item != null)
{
UpdateSelection(item, graphComponent);
}
var selectedNodes = graphComponent.Selection.SelectedNodes;
if (selectedNodes.Count > 0)
{
var markAsSource = new MenuItem {
Header = "Mark as Source"
};
markAsSource.Click += (sender, eventArgs) => {
markedSources = selectedNodes.ToList();
RunAlgorithm(graph);
};
contextMenu.Items.Add(markAsSource);
var markAsTarget = new MenuItem {
Header = "Mark as Target"
};
markAsTarget.Click += (sender, eventArgs) => {
markedTargets = selectedNodes.ToList();
RunAlgorithm(graph);
};
contextMenu.Items.Add(markAsTarget);
}
}
else if (algorithmType != PathsMode.AllChains)
{
if (item != null)
{
var markAsSource = new MenuItem {
Header = "Mark as Source"
};
markAsSource.Click += (sender, eventArgs) => {
markedSources = new [] { item }.ToList();
RunAlgorithm(graph);
};
contextMenu.Items.Add(markAsSource);
if (algorithmType != PathsMode.SingleSource)
{
var markAsTarget = new MenuItem {
Header = "Mark as Target"
};
markAsTarget.Click += (sender, eventArgs) => {
markedTargets = new[] { item }.ToList();
RunAlgorithm(graph);
};
contextMenu.Items.Add(markAsTarget);
}
}
}
}
/// <summary>
/// Fills the context menu with menu items based on the clicked node.
/// </summary>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> e)
{
// first update the selection
INode node = e.Item as INode;
// if the cursor is over a node select it, else clear selection
UpdateSelection(node);
// Create the context menu items
if (graphControl.Selection.SelectedNodes.Count > 0)
{
// at least one node is selected
e.Menu.Items.Add(Commands.Cut, graphControl);
e.Menu.Items.Add(Commands.Copy, graphControl);
e.Menu.Items.Add(Commands.Paste, e.QueryLocation, graphControl);
e.Menu.Items.Add(Commands.Delete, graphControl);
}
else
{
// no node has been hit
var selectAllItem = new ToolStripMenuItem("Select all");
selectAllItem.Click += (o, args) => { graphEditorInputMode.SelectAll(); };
e.Menu.Items.Add(selectAllItem);
e.Menu.Items.Add(Commands.Paste, e.QueryLocation, graphControl);
}
// open the menu
e.ShowMenu = true;
// mark the event as handled
e.Handled = true;
}
private void ContextMenuInputModePopulateContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> e)
{
var node = e.Item as INode;
// create a menu item to toggle the assistant status
bool assistant = assistants[node];
var menuItem = new MenuItem {
Header = "Set as " + (assistant ? "normal" : "assistant")
};
menuItem.Click += async delegate {
//Toggle the value in the map and set the style to indicate an assistant node
assistants[node] = !assistant;
var shinyPlateNodeStyle = node.Style.Clone() as ShinyPlateNodeStyle;
if (shinyPlateNodeStyle != null)
{
shinyPlateNodeStyle.Pen = !assistant
? new Pen(Brushes.Black, 2)
{
DashStyle = DashStyles.Dash
}
: null;
graphControl.Graph.SetStyle(node, shinyPlateNodeStyle);
}
await ApplyLayout();
};
e.Menu.Items.Add(menuItem);
e.ShowMenu = true;
e.Handled = true;
}
/// <summary>
/// Event handler for the context menu for stripe header
/// </summary>
/// <remarks>We show only a simple context menu that demonstrates the <see cref="TableEditorInputMode.InsertChild"/> convenience method.</remarks>
private void graphEditorInputMode_PopulateItemContextMenu(object sender,
PopulateItemContextMenuEventArgs <IModelItem> e)
{
if (!e.Handled)
{
var stripe = GetStripe(e.QueryLocation);
if (stripe != null)
{
var deleteItem = new ToolStripMenuItem {
Text = "Delete " + stripe.Stripe
};
deleteItem.SetCommand(Commands.Delete, stripe.Stripe, graphControl);
e.Menu.Items.Add(deleteItem);
var insertBeforeItem = new ToolStripMenuItem {
Text = "Insert new stripe before " + stripe.Stripe
};
insertBeforeItem.Click += delegate {
IStripe parent = stripe.Stripe.GetParentStripe();
int index = stripe.Stripe.GetIndex();
tableEditorInputMode.InsertChild(parent, index);
};
e.Menu.Items.Add(insertBeforeItem);
var insertAfterItem = new ToolStripMenuItem {
Text = "Insert new stripe after " + stripe.Stripe
};
insertAfterItem.Click += delegate {
IStripe parent = stripe.Stripe.GetParentStripe();
int index = stripe.Stripe.GetIndex();
tableEditorInputMode.InsertChild(parent, index + 1);
};
e.Menu.Items.Add(insertAfterItem);
e.Handled = true;
}
}
}
/// <summary>
/// Opens a context menu to change the type of a node.
/// </summary>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> args)
{
if (args.Item is INode)
{
// Select node if not already selected
if (!graphControl.Selection.IsSelected(args.Item))
{
graphControl.Selection.Clear();
graphControl.Selection.SetSelected(args.Item, true);
}
for (int type = 0; type < nodeStyles.Length; type++)
{
var nodeStyle = nodeStyles[type];
var menuItem = new ToolStripMenuItem
{
Image = CreateColoredRectangle(nodeStyle.Brush, nodeStyle.Pen),
};
var type1 = type;
menuItem.Click += async(o, eventArgs) => {
foreach (var node in graphControl.Selection.SelectedNodes)
{
node.Tag = type1;
GraphControl.Graph.SetStyle(node, nodeStyle);
}
await ApplyLayout(true);
};
args.Menu.Items.Add(menuItem);
}
}
}
/// <summary>
/// Populates the context menu for nodes.
/// </summary>
private void PopulateNodeContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> e)
{
var node = e.Item as INode;
var selection = graphControl.Selection.SelectedNodes;
if (node != null)
{
if (!selection.IsSelected(node))
{
selection.Clear();
selection.SetSelected(node, true);
graphControl.CurrentItem = node;
}
}
if (selection.Count > 0)
{
var markAsSourceItem = new MenuItem {
Header = "Mark as Source"
};
markAsSourceItem.Click += async(o, args) => await MarkAsSource(selection.ToList());
e.Menu.Items.Add(markAsSourceItem);
var markAsTargetItem = new MenuItem {
Header = "Mark as Target"
};
markAsTargetItem.Click += async(o, args) => await MarkAsTarget(selection.ToList());
e.Menu.Items.Add(markAsTargetItem);
// check if one or more of the selected nodes are already marked as source or target
bool marked = false;
foreach (INode n in selection)
{
if (sourceNodes.Contains(n) || targetNodes.Contains(n))
{
marked = true;
break;
}
}
if (marked)
{
// add the 'Remove Mark' item
var removeMarkItem = new MenuItem {
Header = "Remove Mark"
};
removeMarkItem.Click += async delegate {
List <INode> sn = sourceNodes.ToList();
sn.RemoveAll((node1 => selection.IsSelected(node1)));
await MarkAsSource(sn);
List <INode> tn = targetNodes.ToList();
tn.RemoveAll((node1 => selection.IsSelected(node1)));
await MarkAsTarget(tn);
};
e.Menu.Items.Add(removeMarkItem);
}
}
e.Handled = true;
}
/// <summary>
/// Called when the context menu should be populated for a given item.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="populateItemContextMenuEventArgs">The event argument instance containing the event data.</param>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> populateItemContextMenuEventArgs)
{
// see if it's a node but not a not empty group node
INode node = populateItemContextMenuEventArgs.Item as INode;
if (node != null && graphControl.Graph.GetChildren(node).Count == 0)
{
// see if it's already selected
var selectedNodes = graphControl.Selection.SelectedNodes;
if (!selectedNodes.IsSelected(node))
{
// no - make it the only selected node
selectedNodes.Clear();
}
// make sure the node is selected
selectedNodes.SetSelected(node, true);
graphControl.CurrentItem = node;
// mark all selected nodes for incremental layout
var item = new MenuItem {
Header = "Reinsert Incrementally"
};
item.Click += delegate(object o, RoutedEventArgs args) {
incrementalNodes.AddRange(selectedNodes);
UpdateLayout(o, args);
};
populateItemContextMenuEventArgs.Menu.Items.Add(item);
populateItemContextMenuEventArgs.Handled = true;
}
// if it's an edge...
IEdge edge = populateItemContextMenuEventArgs.Item as IEdge;
if (edge != null)
{
// update selection state
var selectedEdges = graphControl.Selection.SelectedEdges;
if (!selectedEdges.IsSelected(edge))
{
selectedEdges.Clear();
}
selectedEdges.SetSelected(edge, true);
graphControl.CurrentItem = edge;
// and offer option to reroute selected edges
var item = new MenuItem {
Header = "Reroute"
};
item.Click += delegate(object o, RoutedEventArgs args) {
incrementalEdges.AddRange(selectedEdges);
UpdateLayout(o, args);
};
populateItemContextMenuEventArgs.Menu.Items.Add(item);
populateItemContextMenuEventArgs.Handled = true;
}
}
/// <summary>
/// Adds a context menu to mark the source node for the reachability algorithm.
/// </summary>
public override void PopulateContextMenu(PopulateItemContextMenuEventArgs <IModelItem> args)
{
var item = args.Item as INode;
if (item != null)
{
var menuItem = new ToolStripMenuItem("Mark as Source");
menuItem.Click += (o, e) => {
markedSource = item;
var graph = args.Context.GetGraph();
ResetGraph(graph);
RunAlgorithm(graph);
};
args.Menu.Items.Add(menuItem);
}
}
/// <summary>
/// Event handler for the context menu other hits on a node.
/// </summary>
/// <remarks>We show only a dummy context menu to demonstrate the basic principle.</remarks>
private void graphEditorInputMode_PopulateNodeContextMenu(object sender,
PopulateItemContextMenuEventArgs <IModelItem> e)
{
if (!e.Handled)
{
IModelItem tableNode =
graphEditorInputMode.FindItems(e.QueryLocation, new[] { GraphItemTypes.Node }, (item) => item.Lookup <ITable>() != null).FirstOrDefault();
if (tableNode != null)
{
var cutItem = new ToolStripMenuItem
{
Text = "ContextMenu for " + tableNode
};
e.Menu.Items.Add(cutItem);
e.Handled = true;
}
}
}
/// <summary>
/// Fills the context menu with menu items based on the clicked node.
/// </summary>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> e)
{
// first update the selection
INode node = e.Item as INode;
// if the cursor is over a node select it, else clear selection
UpdateSelection(node);
// Create the context menu items
if (graphControl.Selection.SelectedNodes.Count > 0)
{
// at least one node is selected
var cutItem = new MenuItem {
Command = ApplicationCommands.Cut
};
e.Menu.Items.Add(cutItem);
var copyItem = new MenuItem {
Command = ApplicationCommands.Copy
};
e.Menu.Items.Add(copyItem);
var deleteItem = new MenuItem {
Command = ApplicationCommands.Delete
};
e.Menu.Items.Add(deleteItem);
}
else
{
// no node has been hit
var selectAllItem = new MenuItem {
Header = "Select all"
};
selectAllItem.Click += (o, args) => { graphEditorInputMode.SelectAll(); };
e.Menu.Items.Add(selectAllItem);
var pasteItem = new MenuItem {
Command = ApplicationCommands.Paste, CommandParameter = e.QueryLocation
};
e.Menu.Items.Add(pasteItem);
}
// open the menu
e.ShowMenu = true;
// mark the event as handled
e.Handled = true;
}
/// <summary>
/// Opens a context menu to change the type of a node.
/// </summary>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> args)
{
if (args.Item is INode)
{
// Select node if not already selected
if (!graphControl.Selection.IsSelected(args.Item))
{
graphControl.Selection.Clear();
graphControl.Selection.SetSelected(args.Item, true);
}
for (int type = 0; type < nodeStyles.Length; type++)
{
var nodeStyle = nodeStyles[type];
var menuItem = new MenuItem
{
Header = new Rectangle
{
Fill = nodeStyle.Brush,
Width = 50,
Height = 20,
Stroke = nodeStyle.Pen.Brush,
Margin = new Thickness(5)
}
};
var type1 = type;
menuItem.Click += async(o, eventArgs) => {
foreach (var node in graphControl.Selection.SelectedNodes)
{
node.Tag = type1;
GraphControl.Graph.SetStyle(node, nodeStyle);
}
await ApplyLayout(true);
};
args.Menu.Items.Add(menuItem);
}
}
}
/// <summary>
/// Fills the context menu with menu items based on the clicked node.
/// </summary>
private void OnPopulateItemContextMenu(object sender, PopulateItemContextMenuEventArgs <IModelItem> e)
{
// first update the selection
INode node = e.Item as INode;
// if the cursor is over a node select it, else clear selection
UpdateSelection(node);
// Create the context menu items
var selectedNodes = graphControl.Selection.SelectedNodes;
if (selectedNodes.Count > 0)
{
// only allow aggregation operations on nodes that are not aggregation nodes already
var aggregateAllowed = selectedNodes.Any(n => !AggregateGraph.IsAggregationItem(n));
var aggregateByShape =
new ToolStripMenuItem("Aggregate Nodes with Same Shape")
{
Enabled = aggregateAllowed
};
aggregateByShape.Click += (o, args) => AggregateSame(selectedNodes.ToList(), ShapeSelector,
ShapeStyle);
e.Menu.Items.Add(aggregateByShape);
var aggregateByColor =
new ToolStripMenuItem("Aggregate Nodes with Same Color")
{
Enabled = aggregateAllowed
};
aggregateByColor.Click += (o, args) => AggregateSame(selectedNodes.ToList(), ColorSelector, ColorStyle);
e.Menu.Items.Add(aggregateByColor);
var aggregateByShapeAndColor =
new ToolStripMenuItem("Aggregate Nodes with Same Shape and Color")
{
Enabled = aggregateAllowed
};
aggregateByShapeAndColor.Click += (o, args) =>
AggregateSame(selectedNodes.ToList(), ShapeAndColorSelector, ShapeAndColorStyle);
e.Menu.Items.Add(aggregateByShapeAndColor);
var separateAllowed = selectedNodes.Any(n => AggregateGraph.IsAggregationItem(n));
var separate = new ToolStripMenuItem("Separate")
{
Enabled = separateAllowed
};
separate.Click += (o, args) => Separate(selectedNodes.ToList());
e.Menu.Items.Add(separate);
}
else
{
var aggregateByShape = new ToolStripMenuItem("Aggregate All Nodes by Shape");
aggregateByShape.Click += (o, args) => AggregateAll(ShapeSelector, ShapeStyle);
e.Menu.Items.Add(aggregateByShape);
var aggregateByColor = new ToolStripMenuItem("Aggregate All Nodes by Color");
aggregateByColor.Click += (o, args) => AggregateAll(ColorSelector, ColorStyle);
e.Menu.Items.Add(aggregateByColor);
var aggregateByShapeAndColor = new ToolStripMenuItem("Aggregate All Nodes by Shape and Color");
aggregateByShapeAndColor.Click += (o, args) => AggregateAll(ShapeAndColorSelector, ShapeAndColorStyle);
e.Menu.Items.Add(aggregateByShapeAndColor);
var separateAllowed = Graph.Nodes.Any(n => AggregateGraph.IsAggregationItem(n));
var separateAll = new ToolStripMenuItem("Separate All")
{
Enabled = separateAllowed
};
separateAll.Click += (o, args) => {
AggregateGraph.SeparateAll();
RunLayout();
};
e.Menu.Items.Add(separateAll);
}
e.ShowMenu = true;
e.Handled = true;
}
/// <summary>
/// Populate the context menu specifically for the current algorithm.
/// </summary>
public virtual void PopulateContextMenu(PopulateItemContextMenuEventArgs <IModelItem> args)
{
}