using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using WebApiExplorer.Models;

namespace WebApiExplorer.Controllers
{
    public partial class Wijmo5FlexGridController : Controller
    {
        private readonly GridExportImportOptions _flexGridGroupingModel = new GridExportImportOptions
        {
            NeedExport = true,
            NeedImport = false,
            IncludeColumnHeaders = true
        };
        public ActionResult Grouping()
        {
            ViewBag.Options = _flexGridGroupingModel;
            return View();
        }
    }
}

@using WebApiExplorer.Models
@{
    GridExportImportOptions optionsModel = ViewBag.Options;
    ViewBag.DemoSettings = true;
}

<div id="@(optionsModel.ControlId)" style="height:300px"></div>
<select id="gMenu">
    <option value="" selected>@Html.Raw(Resources.Wijmo5FlexGrid.Grouping_Groupint_None)</option>
    <option value="country">Country</option>
    <option value="sales">Sales</option>
    <option value="date">Date</option>
    <option value="country,date">Country and Date</option>
    <option value="country,sales">Country and Sales</option>
    <option value="country,date,sales">Country, Date, and Sales</option>
</select>
@section Settings{
    @Html.Partial("_FlexGridOptions", optionsModel)
}
<script>
    var grid = new wijmo.grid.FlexGrid('#@(optionsModel.ControlId)'), filter, menu = new wijmo.input.Menu('#gMenu'), cv;
    initializeFlexGrid(grid);
    cv = grid.collectionView;
    updateMenuHeader();
    menu.itemClicked.addHandler(function (sender) {
        var groupBy = sender.selectedValue;
        cv.groupDescriptions.clear();
        if (groupBy) {
            var groupNames = groupBy.split(',');
            for (var i = 0; i < groupNames.length; i++) {
                var groupName = groupNames[i];
                if (groupName == 'date') { // group dates by year
                    var groupDesc = new wijmo.collections.PropertyGroupDescription(groupName, function (item, prop) {
                        return item.date.getFullYear();
                    });
                    cv.groupDescriptions.push(groupDesc);
                }
                else if (groupName == 'sales') { // group amounts in ranges
                    var groupDesc = new wijmo.collections.PropertyGroupDescription(groupName, function (item, prop) {
                        return item.amount >= 5000 ? '> 5,000' : item.amount >= 500 ? '500 to 5,000' : '< 500';
                    });
                    cv.groupDescriptions.push(groupDesc);
                }
                else { // group everything else by value
                    var groupDesc = new wijmo.collections.PropertyGroupDescription(groupName);
                    cv.groupDescriptions.push(groupDesc);
                }
            }
        }
        updateMenuHeader();
    });

    function updateMenuHeader() {
        menu.header = '<b>@(Resources.Wijmo5FlexGrid.Grouping_GroupBy)</b> ' + menu.text;
    }
</script>
@section Description{
    @Html.Raw(Resources.Wijmo5FlexGrid.Grouping_Text0)
}