Context Menu

28 May 201916 minutes to read

Context menu is used to improve user action with Kanban using popup menu. It can be shown by defining ContextMenuSettings.Enable as true. Context menu has option to add default items in ContextMenuSettings.MenuItems and customized items in ContextMenuSettings.CustomMenuItems.

Default Context Menu items

Please find the below table for default context menu items and its actions.

Section	Context menu items	Action
Header	Hide Column	Hide the current column
	Visible Columns	Show the column if already hidden
Content	Add Card	Start Add new card
Card	Edit Card	Start Edit in current card
	Delete Card	Delete the current card
	Top of Row	Move the card to Top of Row
	Bottom of Row	Move the card to Bottom of Row
	Move Up	Move the card in Up direction
	Move Down	Move the card in Down direction
	Move Left	Move the card in Left direction
	Move Right	Move the card in Right direction
	Move to Swimlane	Move the card to Swim lane which is chosen from given list
	Print Card	Print the specific card

The following code example describes the above behavior.

RAZOR

@(Html.EJ().Kanban("Kanban")
        .DataSource((IEnumerable<object>)ViewBag.datasource)
        .Columns(col =>
        {
            col.HeaderText("Backlog").Key("Open").Add();
            col.HeaderText("In Progress").Key("InProgress").Add();
            col.HeaderText("Done").Key("Close").Add();
        })
        .KeyField("Status")
        .Fields(field =>
        {
            field.Content("Summary")
                .Tag("Tags")
                .PrimaryKey("Id");
        })
        .ContextMenuSettings(menu => menu.Enable(true))   
    )

C#

namespace MVCSampleBrowser
    {
        public partial class KanbanController : Controller
        {
            //
            // GET: /Kanban/
            public ActionResult KanbanFeatures()
            {
                var DataSource = new NorthwindDataContext().Tasks.Take(30).ToList();
                ViewBag.datasource = DataSource;
                return View();
            }
        }
    }

The following output is displayed as a result of the above code example.

Custom Context Menu

Custom context menu is used to create your own menu item and its action. To add customized context menu items, you need to use ContextMenuSettings.CustomMenuItems property and to bind required actions for this, use ContextClick event.

The following code example describes the above behavior.

RAZOR

@(Html.EJ().Kanban("Kanban")
        .DataSource((IEnumerable<object>)ViewBag.datasource)
        .Columns(col =>
        {
            col.HeaderText("Backlog").Key("Open").Add();
            col.HeaderText("In Progress").Key("InProgress").Add();
            col.HeaderText("Done").Key("Close").Add();
        })
        .KeyField("Status")
        .Fields(field =>
        {
            field.Content("Summary")
                .Tag("Tags")
                .SwimlaneKey("Assignee")
                .PrimaryKey("Id");
        })
        .ContextMenuSettings(menu => menu.Enable(true) .MenuItems(item=> item.Reset()).CustomMenuItems(custom => custom.Text("Clear Selection").Target(ContextTarget.All).Add()))
    )

C#

namespace MVCSampleBrowser
    {
        public partial class KanbanController : Controller
        {
            //
            // GET: /Kanban/
            public ActionResult KanbanFeatures()
            {
                var DataSource = new NorthwindDataContext().Tasks.Take(30).ToList();
                ViewBag.datasource = DataSource;
                return View();
            }
        }
    }

The following output is displayed as a result of the above code example.

Sub Context Menu

Sub context menu is used to add customized sub menu to the custom context menu item. To add a sub context menu, you need to use ContextMenuSettings.subMenu property and to bind required actions for this, use ContextClick event.

The following code example describes the above behavior.

RAZOR

@(Html.EJ().Kanban("Kanban")
        .DataSource((IEnumerable<object>)ViewBag.datasource)
        .ClientSideEvents(eve => eve.ContextClick("click"))
        .Columns(col =>
        {
            col.HeaderText("Backlog").Key("Open").Add();
            col.HeaderText("In Progress").Key("InProgress").Add();
            col.HeaderText("Done").Key("Close").Add();
        })
        .KeyField("Status")
        .Fields(field =>
        {
            field.Content("Summary")
                .Tag("Tags")
                .SwimlaneKey("Assignee")
                .PrimaryKey("Id");
        })
        .ContextMenuSettings(menu => menu.Enable(true).MenuItems(item=>item.Add()).CustomMenuItems(custom =>
                {
            custom.Text("Clear Selection").Target(ContextTarget.All).Add();         
            custom.Text("Move to Column").Target(ContextTarget.All).Template("#template").Add();
                }
            ))
    )

C#

namespace MVCSampleBrowser
    {
        public partial class KanbanController : Controller
        {
            //
            // GET: /Kanban/
            public ActionResult KanbanFeatures()
            {
                var DataSource = new NorthwindDataContext().Tasks.Take(30).ToList();
                ViewBag.datasource = DataSource;
                return View();
            }
        }
    }

HTML

<ul id="template">
    <li><a>Open</a></li>
    <li><a>InProgress</a></li>
    <li><a>Close</a></li>
    </ul>

JAVASCRIPT

function click(args)
    {
        if (args.text == "Clear Selection")
            this.clearSelection();
    }

The following output is displayed as a result of the above code example.