Class DiagramMenuOpeningEventArgs

Notifies before opening context menu

Inheritance

System.Object

DiagramMenuOpeningEventArgs

Namespace: Syncfusion.Blazor.Diagram

Assembly: Syncfusion.Blazor.dll

Syntax

public class DiagramMenuOpeningEventArgs : Object

Examples

<SfDiagramComponent @ref="diagram" Height="600px" Width="90%">
<ContextMenuSettings @bind-Show="@show"
                    @bind-ShowCustomMenuOnly="customMenuOnly" 
                    @bind-Items="@Items" 
                    ContextMenuOpening="@BeforeOpen" 
                    ContextMenuItemClicked="@ItemClicked"> 
</ContextMenuSettings>
</SfDiagramComponent>
@code {
SfDiagramComponent diagram;
ContextMenuSettings ContextMenuSettings;
List<ContextMenuItem> Items;
bool customMenuOnly = false;
bool show = true;

protected override void OnInitialized()
{
   nodes = new DiagramObjectCollection<Node>();
   connectors = new DiagramObjectCollection<Connector>();

   Items = new List<ContextMenuItem>()
   {
           new ContextMenuItem()
           {
               Text = "Save As...",
               Id = "save",
               //IconCss = "glyphicon glyphicon-pencil",
           },
           new ContextMenuItem()
           {
               Text = "Group",
               Id = "load",
               //IconCss = "e-save"
           }
   };
}
private void BeforeOpen(DiagramBeforeMenuOpenEventArgs args)
{
   foreach (ContextMenuItem Item in args.Items)
   {
       if (Item.Text == "Groups")
       {
           args.HiddenItems.Add(Item.Id);
       }
   }
}
private void ItemClicked(DiagramMenuEventArgs args)
{
   if (args.Item.Text == "Group")
   {
       diagram.SelectAll();
       diagram.Group();
   }
}

Constructors

DiagramMenuOpeningEventArgs()

Declaration

public DiagramMenuOpeningEventArgs()

Properties

Cancel

Gets or sets the value indicates whether the user can prevent a menu from opening.

Declaration

public bool Cancel { get; set; }

Property Value

Type
System.Boolean

HiddenItems

Gets or sets a value indicating the collection of hidden items associated with context menu.

Declaration

public List<string> HiddenItems { get; }

Property Value

Type
System.Collections.Generic.List<System.String>

Items

Gets or sets the value indicates the collection of menu items.

Declaration

public List<ContextMenuItem> Items { get; }

Property Value

Type
System.Collections.Generic.List<ContextMenuItem>